Civic Direccion Asistida

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS) (If steering maintenance is required)

The Civic Hybrid SRS includes a driver’s airbag in the steering wheel hub, a passenger’s airbag in the dashboardabove the glove box, seat belt tensioners in the front seat belt retractors, seat belt buckle tensioners in the front seatbelt buckles, side curtain airbags in the sides of the roof, and side airbags in the front seat-backs. Informationnecessary to safely service the SRS is included in this Service Manual. Items marked with an asterisk ( ) on thecontents page include or are located near SRS components. Servicing, disassembling, or replacing these itemsrequires special precautions and tools, and should be done only by an authorized Honda dealer.

• To avoid rendering the SRS inoperative, which could lead to personal injury or death in the event of a severe frontalor side collision, all SRS service work should be done by an authorized Honda dealer.

• Improper service procedures, including incorrect removal and installation of the SRS, could lead to personal injurycaused by unintentional deployment of the airbags and/or side airbags.

• Do not bump or impact the SRS unit, front impact sensors, or side impact sensors when the ignition switch is ON (II),or for at least 3 minutes after the ignition switch is turned OFF; otherwise, the system may fail in a collision, or theairbags may deploy.

• SRS electrical connectors are identified by yellow color coding. Related components are located in the steeringcolumn, front console, dashboard, dashboard lower panel, in the dashboard above the glove box, in the front seats,in the roof side, and around the floor. Do not use electrical test equipment on these circuits.

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Steering

Steering

..................................................................................................EPS (Electrical Power Steering)

Components . 17-15

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Special Tools . 17-2Component Location Index . 17-3Steering Wheel Rotational Play Check . 17-4Power Assist Check . 17-4Steering Linkage and Gearbox Inspection . 17-5Steering Wheel Removal . 17-6Steering Wheel Disassembly/Reassembly . 17-7Steering Wheel Installation . 17-8Column Cover Removal and Installation . 17-9Steering Column Removal and Installation . 17-10Steering Column/Tilt/Telescopic Inspection . 17-13Steering Lock Replacement . 17-13Rack Guide Adjustment . 17-14

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Ref. No. Tool Number Description Qty

17-2

Steering

Special Tools

07AAK-SNAA120 Universal Eyelet 107JAF-SH20330 Bushing Base 107MAA-SL0020A Locknut Wrench, 43 mm 107MAC-SL0A202 Ball Joint Remover, 28 mm 1

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17-3

Component Location Index

POWER STEERING GEARBOX

DRIVER’S AIRBAG

STEERING WHEEL

STEERING COLUMN

Rack Guide Adjustment, page 17-14EPS Component Location Index, page 17-16

Replacement, page 24-160

Removal, page 17-6Disassembly/Reassembly, page 17-7Installation, page 17-8

Column Cover Removal and Installation,page 17-9Removal and Installation,page 17-10Streering Column/Tilt/Telescopic Inspection,page 17-13Steering Lock Replacement,page 17-13

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０１

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－－Rotational play: 0 10 mm (0 0.39 in.)

17-417-4

Steering

Steering Wheel Rotational PlayCheck

Power Assist Check

1. Turn the front wheels to the straight ahead position.

2. Measure how far you can turn the steering wheelleft and right without moving the front wheels.

• If the play is within the limit, the gearbox andlinkage are OK.

• If the play exceeds the limit, adjust the rack guide(see page 17-14). If the play is still excessive afterrack guide adjustment, inspect the steeringlinkage and gearbox (see page 17-5).

NOTE: This test should be done with original equipmenttires and wheels at the correct tire pressure.

1. Start the engine, and let it idle.

2. Attach a commercially available spring scale to thesteering wheel. With the engine idling and thevehicle on a clean, dry floor, pull the scale asshown, and read it as soon as the tires begin to turn.

3. If the scale reads no more than 34 N (3.5 kgf, 7.7 lbf),the power assist is OK. If it reads more, check theseitems:

• Steering linkage (see page 17-5)• Rack guide adjustment (see page 17-14)• EPS system (see page 17-17)

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17-5

Steering Linkage and Gearbox Inspection

STEERING COLUMN

BALL JOINT BOOT

TIE-ROD LOCKNUT

BOOT

STEERING GEARBOX

TIE-ROD END BALL JOINT

STEERING JOINTS

GEARBOX MOUNT CUSHIONS

Inspect for loosemounting hardware.

Inspect for damageand deterioration.

Check for loose locknut.

Inspect for damage and deterioration.

Inspect for loose mounting hardware.

Inspect for faulty movementand damage.

Check for a loose joint bolt, orfaulty movement.

Inspect for deterioration.

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17-6

Steering

Steering Wheel Removal

A

B

A

B

C

D

SRS components are located in this area. Review theSRS component locations (see page 24-11) and theprecautions and procedures (see page 24-13) beforeDoing repairs or service.

1. Make sure you have the anti-theft codes for theaudio or navigation system, then write down theaudio presets.

2. Make sure the ignition switch is OFF, thendisconnect the negative cable from the battery.

3. Align the front wheels straight ahead, then removethe driver’s airbag from the steering wheel(see page 24-160).

4. Disconnect the cable reel subharness connector (A).

5. Loosen the steering wheel bolt (B).

6. Install a commercially available steering wheelpuller (A) on the steering wheel (B). Free thesteering wheel from the steering column shaft byturning the pressure bolt (C) of the puller.

Note these items when removing the steeringwheel:• Do not tap on the steering wheel or the steering

column shaft when removing the steering wheel.• If you thread the puller bolts (D) into the wheel

hub more than five threads, the bolts will hit thecable reel and damage it. To prevent this, installa pair of jam nuts five threads up on each pullerbolt.

7. Remove the steering wheel puller, then remove thesteering wheel bolt and steering wheel from thesteering column.

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17-7

Steering Wheel Disassembly/Reassembly

STEERING WHEEL

STEERING WHEELREAR COVER

ACCESS PANELCORD GUIDE

CRUISE CONTROLCOMBINATION SWITCH

STEERING WHEEL TRIM

AUDIO REMOTESWITCH

VOICE CONTROLSWITCH(With Navigation)

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17-8

Steering

Steering Wheel Installation

B A

A

B

CD

A39 N·m (4.0 kgf·m,29 lbf·ft)

B

1. Before installing the steering wheel, make sure thefront wheels are aligned straight ahead, then centerthe cable reel (A). Do this by first rotating the cablereel clockwise until it stops. Then rotate itcounterclockwise about three full turns. The arrowmark (B) on the cable reel label point should pointstraight up.

2. Position the two tabs (A) of the turn signalcancelling sleeve (B) as shown. Install the steeringwheel on to the steering column shaft, making surethe steering wheel hub (C) engages the pins (D) ofthe cable reel and the tabs of the turn signalcanceling sleeve. Do not tap on the steering wheelor steering column shaft when installing thesteering wheel.

3. Install the steering wheel bolt (A), and tighten it tothe specified torque. Connect the cable reelsubharness connector (B). Make sure the wireharness is routed and fastened properly.

4. Install the driver’s airbag (see page 24-160).

5. Reconnect the negative cable to the battery, and dothe following items:

NOTE: If the IMA battery level gauge (BAT) displaysno segments, start the engine, and hold it between3,500 rpm and 4,000 rpm without load (in Park orneutral) until the BAT displays at least threesegments.

• Turn the ignition swtich ON (II); the SRS indicatorshould come on for about 6 seconds and then gooff.

• Enter the anti-theft code for the audio ornavigation system, then enter the audio presets.

• Set the clock.• Check the horn and turn signal switches work

properly.• Make sure the steering wheel switches work

properly.• Make sure the steering wheel is centered.

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17-9

Column Cover Removal and Installation

I

K

A

BC

D

EF

G

H

K

J

B

A

NOTE:• Take care not to scratch or damage the column

covers.• Do not pry the cover surface with any tools.

1. Release the lock lever (A), and adjust the steeringcolumn to full tilt down position and to the fulltelescopic pull position.

2. Insert a suitable sized screwdriver or equivalenttool (B) along the guide rib (C) into the lever hole(D) in the lower column cover (E).

3. Release the hook (F) located on the left side of theupper column cover (G).

NOTE: The right side hook (H) of the upper columncover can’t be released from the inside.

4. Turn the steering wheel to the left, and release theleft pawl (I) of the upper column cover whilepushing the lower column cover from the front side.

5. Turn the steering wheel to the right, and release theright pawl (J) of the upper column cover whilepushing the lower column cover from the front side.

6. Remove the cover by lightly pulling it up byreleasing the right side hook (H) of the uppercolumn cover.

Carefully release the pawls, note the hooks(K) may break when upper column cover ispulled up too hard.

7. Remove the three screws, then remove the lowercolumn cover (A).

8. Install the upper and lower column cover in thereverse order of removal, and push the hooks intoplace securely.

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０４

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Removal

17-10

Steering

Steering Column Removal and Installation

Normal position

A

Out of position

A

A

A

B

C

D

SRS components are located in this area. Review theSRS component locations (see page 24-11) and theprecautions and procedures (see page 24-13) beforeDoing repairs or service.

Be careful not to pull the bracket (A) on the frontside of the steering column out of its normalposition. If the bracket accidentally comes out,replace the steering column as an assembly.

1. Make sure you have the anti-theft code for theaudio or navigation system, then write down theaudio presets.


3. Remove the driver’s airbag assembly and thesteering wheel (see page 17-6).

4. Remove the driver’s dashboard undercover(see page 20-89).

5. Remove the column covers (see page 17-9).

6. Remove the steering joint cover (A).

7. Release the lock lever, and adjust the steeringcolumn to the full tilt up position, and to the fulltelescopic in position.

8. Tighten the lock lever.

9. Hold the lower slide shaft (A) on the column with apiece of wire (B) between the joint yoke (C) of thelower slide shaft and joint yoke (D) of the uppershaft to prevent the slider shaft from pulling out.

10. Release the lock lever, and adjust the steeringcolumn to the full telescopic out position, thentighten the lock lever.

NOTE: Do not release lock lever when removing thesteering column from the frame.

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０５

17-11

C8 x 1.25 mm28 N·m(2.9 kgf·m, 21 lbf·ft)

D H

GF

F

E

B

A

8 x 1.25 mm22 N·m(2.2 kgf·m,16 lbf·ft)

8 x 1.25 mm13 N·m(1.3 kgf·m,9.4 lbf·ft)

B

I

11. Disconnect the wire harness connectors from the combination switch assembly and cable reel (A).

12. Remove the combination switch assembly from the steering column shaft by removing the three screws (B).

13. Disconnect the connectors from the ignition switch, and release the wire harness clips from the steering column.

14. Remove the steering joint bolt (C), then disconnect the steering joint (D) from the pinion shaft.

15. Remove the steering column (E) by removing the attaching nuts and bolts. If the lower slide shaft (F) is removed,slip it into the upper shaft (G) by aligning the paint or stamped marks (H).

16. Remove the center guide (I) (if equipped), and discard it. The center guide is for factory assembly only.

(cont’d)

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０６

０７

０８

±

Installation

17-12

Steering

Steering Column Removal and Installation (cont’d)

73 ° 20 °

B

A

FRONT


A

B

A

1. Install the steering column in the reverse order ofremoval, and note these items:

• Make sure the wires are not caught or pinched byany parts.

• Take care not to let the sliding capsules fall out ofposition during column installation.

2. Center the steering rack within its stroke in thesteering joint connection.

3. With the rack in the straight ahead driving position,cut the wire (A) and slip the lower end of thesteering joint onto the pinion shaft (B) in the rangeshown.

4. Align the bolt hole (A) on the steering joint with thegroove (B) around the pinion shaft, and looselyinstall the joint bolt (C). Be sure that the joint bolt issecurely in the groove in the pinion shaft. Pull onthe steering joint to make sure that the steeringjoint is fully seated. Tighten the steering joint boltto the specified torque.

5. Install the steering joint cover (A).

6. Install the steering wheel (see page 17-8).

7. Install the column covers.

8. Install the driver’s dashboard undercover (see page20-89).

9. Reconnect the negative cable to the battery, and dothe following items:

• Turn the ignition switch ON (II); the SRS indicatorshould come on for about 6 seconds and then gooff.


• Set the clock.• Check the horn and turn signal switches work

properly.• Make sure the steering wheel switches work

properly.• Make sure the steering wheel is centered.

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０１

０２

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17-1317-13

Steering Column/Tilt/TelescopicInspection

Steering Lock Replacement

A

B

C

DE

F

B

A

B

• Check the steering column ball bearing (A) and thesteering joint bearings (B) for play and propermovement. If any bearing is noisy or has excessiveplay, replace the steering column as an assembly.

• Check the lower slide shaft (C) for smooth movementin and out. If the lower slide shaft is removed, slip itinto the upper shaft by aligning the paint or stampedmarks (D). If it sticks or binds, replace the steeringcolumn as an assembly.

• Check the sliding capsules (E) for distortion orbreakage. If there is distortion or breakage, replacethe steering column as an assembly.

• Check the tilt mechanism and telescopic mechanismfor movement and damage.

• Check the absorbing plates (F) for distortion orbreakage. If there is distortion or breakage, replacethe steering column as an assembly.

1. Remove the steering column (see page 17-10).

2. Center-punch each of the two shear bolts, and drillthe heads of the bolts off with a 5 mm (3/16 in.) drillbit. Be careful not to damage the switch body whenremoving the shear bolts.

3. Remove the shear bolts from the switch body.

4. Install the switch body without the key inserted.

5. Loosely tighten the new shear bolts.

6. Insert the ignition key, and check for properoperation of the steering wheel lock and that theignition key turns freely.

7. Tighten the shear bolts (A) until the hex heads (B)twist off.

8. Rewrite the new immobilizer control unit receiver(see page 22-279), and make sure the immobilizersystem works properly.

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±

±

Special Tools Required

Specified return angle: 7 ° 3 °

17-14

Steering

Rack Guide Adjustment

A

B

07MAA-SL0020A

A

B

A

7 ° 3 °

B44 N·m(4.5 kgf·m, 33 lbf·ft)

Locknut wrench, 43 mm 07MAA-SL0020A

1. Set the wheels in the straight ahead position.

2. Loosen the rack guide screw locknut (A) with thelocknut wrench, then remove the rack guide screw(B).

3. Remove the old sealant from the rack guide screw(A), and apply new sealant (Three Bond 1215 orLoctite 5699) to the middle of the threads (B).Loosely install the rack guide screw on the steeringgearbox.

4. Tighten the rack guide screw (A) to 25 N·m(2.5 kgf·m, 18 lbf·ft), then loosen it.

5. Retighten the rack guide screw to 3.9 N·m(0.4 kgf·m, 2.9 lbf·ft), then back it off to the specifiedangle.

6. Hold the rack guide screw stationary with a wrench,and install the locknut (B) by hand until it’s fullyseated.

7. Install the locknut wrench on the locknut, and holdthe rack guide screw stationary with a wrench.Tighten the locknut to the specified torque.

8. Check for unusual steering effort through thecomplete turning travel.

9. Check the steering wheel rotational play (see page17-4), and the power assist (see page 17-4).

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........................................................................................................................Steering . 17-1

EPS (Electrical Power Steering) Components

Steering

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Component Location Index . 17-16General Troubleshooting Information . 17-17Memorizing the Torque Sensor Neutral Position . 17-20DTC Troubleshooting Index . 17-21Symptom Troubleshooting Index . 17-23System Description . 17-24Circuit Diagram . 17-26DTC Troubleshooting . 17-29Symptom Troubleshooting . 17-57Motor Removal and Installation . 17-60Steering Gearbox Removal and Installation . 17-62Rack End Removal and Installation . 17-74Rack Guide Removal/Installation . 17-78EPS Control Unit Removal/Installation . 17-79Tie-rod Ball Joint Boot Replacement . 17-80Gearbox Mount Cushion Replacement . 17-81

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17-16

EPS Components

Component Location Index

EPS CONTROL UNIT

BATTERY

DATA LINKCONNECTOR (DLC)

MOTOR

UNDER-HOOD FUSE/RELAY BOX

GAUGE CONTROLMODULE (TACH)

UNDER-DASHFUSE/RELAY BOX

STEERING GEARBOX

EPS INDICATOR

Removal/Installation,page 17-79 Removal and Installation,

page 17-60

Removal and Installation, page 17-62Rack End Removal and Installation, page 17-74Rack Guide Removal/Installation, page 17-78Tie-rod Ball Joint Boot Replacement, page 17-80Gearbox Mount Cushion Replacement, page 17-81

06/09/19 11:30:23 61SNC010_170_0017

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EPS Indicator Diagnostic Trouble Code (DTC)

Self-diagnosis

17-17

General Troubleshooting Information

Under normal conditions, the EPS indicator comes onwhen the ignition switch is turned to the ON (II) position,then goes off after the engine is started. This indicatesthat the LED and its circuit are operating correctly.If there is a failure in the system after the engine isstarted, the EPS indicator will stay on, and the powerassist is turned off.

When the EPS indicator comes on, the control unitmemorizes the DTC. In this case, the control unit willnot activate the EPS system after the engine startsagain, but it keeps the EPS indicator on.

When DTC 51-01, 51-02 or 51-06 is stored in the controlunit, the EPS indicator will stay on until the DTC iserased. When a problem is detected and the EPSindicator comes on, there are cases when the indicatorstays on until the ignition switch is turned OFF, andcases when the indicator goes off automatically whenthe system returns to normal. Even though the systemis operating normally, the EPS indicator will come onunder the following conditions:

• The vehicle speed decreases abruptly from 12 mph(20 km/h) or more (by applying brake), and it is lessthan 1 mph (1 km/h) and engine speed is 2,000 rpm orabove for 5 seconds (continuously) after the abruptdeceleration.

• While turning the steering wheel with the vehiclespeed of 1 mph (1 km/h) or less for 20 seconds, andthe engine speed is 2,000 rpm or above for at least10 seconds.

• When the engine speed is 500 rpm or less, and thevehicle is traveling at a speed of 6 mph (10 km/h) ormore for about 3 seconds.

To determine the actual cause of the problem, questionthe customer about the conditions during which theproblem occurred, taking the above conditions intoconsideration.

• If the CPU cannot be activated, or it fails, the EPSindicator comes on, but the DTC is not memorized.

• The memory can hold any number of DTCs. However,when the same DTC is detected more than once, themost recent DTC is written over the prior DTC,therefore only one occurrance is memorized.

• The lowest DTC is indicated first. The DTCs areindicated in ascending order, not in the order thatthey occurred.

• The DTCs are memorized in the EEPROM (non-volatile memory) therefore the memorized DTCscannot be erased by disconnecting the battery.Perform the specified procedures to clear the DTCs.

Self-diagnosis can be classified into three categories:

• Initial diagnosis: Done right after the engine startsand until the EPS indicator goes off.

• Regular diagnosis: Done right after the initialdiagnosis until the ignition switch is turned OFF.

• Steering diagnosis: Done during regular diagnosiswhile turning the steering wheel.

The EPS control unit performs the following functionswhen a problem is detected by self-diagnosis:

1. Turns on the EPS indicator.

2. Memorizes the DTC.

3. Stops power assist and manual steering operationresumes.

NOTE: For DTCs 11-01, 11-02, 12-01, 21-01, 21-02,22-01 and 35-04 the EPS indicator will go offautomatically, and the system returns to normal.

(cont’d)

06/09/19 11:30:23 61SNC010_170_0018

Restriction on Power Assist Operation

Torque Sensor Neutral Position

How to Troubleshoot DTCs

17-18

EPS Components

General Troubleshooting Information (cont’d)

Repeated extreme steering force, such as turning thesteering wheel continuously back-and-forth with thevehicle stopped, causes an increase of powerconsumption in the EPS motor. The increase of electriccurrent causes the motor to heat up. Because this heatadversely affects the system, the control unit monitorsthe electric current of the motor.

When the control unit detects heat build-up in the motor,it reduces the electric current to the motor gradually toprotect the system, and it restricts the power assistoperation. The EPS indicator does not come on duringthis function.

When steering torque is not applied to the steeringwheel, or when the ignition is turned off and the motorcools, the control unit will restore the power assistgradually until it’s fully restored (after about 8 minutes).

The EPS control unit stores the torque sensor neutralposition in the EEPROM. The torque sensor neutralposition must be memorized whenever the gearbox, themotor, or the EPS control unit is replaced.

NOTE: The torque sensor neutral position is noteffected when erasing the DTCs.

The troubleshooting procedures assume that the causeof the problem is still present and the EPS indicator isstill on. Following the procedure when the EPSindicator does not come on can result in incorrectdiagnosis.

1. Question the customer about the conditions whenthe problem occurred, and try to reproduce thesame conditions for troubleshooting. Find outwhen the EPS indicator came on, such as duringEPS control, after EPS control, when the vehiclewas at a certain speed, etc.

2. When the EPS indicator does not come on duringthe test-drive, but troubleshooting is done based onthe DTC, check for loose connectors, poor terminalcontact, etc., in the affected circuit before you starttroubleshooting.

3. After troubleshooting, clear the DTC and test-drivethe vehicle. Be sure the EPS indicator does notcome on.

06/09/19 11:30:24 61SNC010_170_0019

０１０２

How to Retrieve DTCs How to Clear DTCs

17-19

A

A

1. With the ignition switch OFF, connect the HDS(Honda diagnostic system) to the DLC (data linkconnector) (A) located under the driver’s side of thedashboard.

2. Turn the ignition switch ON (II).

3. Make sure the HDS communicates with the vehicleand the EPS control unit. If it doesn’t, troubleshootthe DLC circuit (see page 11-218).

4. Follow the prompts on the HDS to display theDTC(s) on the screen. After determining the DTC,refer to the DTC Troubleshooting.

NOTE: See the HDS Help menu for specificinstructions.

5. Turn the ignition switch OFF.

1. With the ignition switch OFF, connect the HDS tothe DLC (data link connector) (A) located under thedriver’s side of the dashboard.



4. Clear the DTC(s) by following the screen promptson the HDS.



06/09/19 11:30:24 61SNC010_170_0020

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17-20

EPS Components

Memorizing the Torque Sensor Neutral Position

A

The torque sensor neutral position must be memorizedwhenever the gearbox, the motor, or the EPS controlunit is replaced. Note that the torque sensor neutralposition is not affected when erasing the DTC.

NOTE: The torque sensor is temperature sensitive.When memorizing the torque sensor neutral position,the ambient temperature must be above 68 °F (20 °C).

1. With the ignition switch OFF, connect the HDS tothe DLC (data link connector) (A) located under thedriver’s side of the dashboard.



4. From the EPS MENU, select MISCELLANEOUSTEST then TORQUE SENSOR LEARN and followthe screen prompts on the HDS.



06/09/19 11:30:46 61SNC010_170_0021

ＳＮＣ７Ａ００Ｆ１８１００００００００ＧＡＡＴ００

DTC Detection Item Note

17-21

DTC Troubleshooting Index

11-01 Low/high IG1-terminal voltage (Initial diagnosis) (see page 17-29)11-02 Low/high IG1-terminal voltage (Regular diagnosis) (see page 17-30)12-01 Low/high VBU voltage (Regular diagnosis) (see page 17-31)21-01 Excessive change of the vehicle speed signal (Regular diagnosis) (see page 17-32)21-02 Comparison between the vehicle speed and the engine speed signal

(Regular diagnosis)(see page 17-32)

22-01 Engine speed signal (Initial diagnosis) (see page 17-34)31-01 No writing the torque sensor neutral position (Initial diagnosis) (see page 17-20)32-01 EPS control unit internal circuit (current sensor) (Initial diagnosis) (see page 17-36)32-02 EPS control unit internal circuit (current sensor) (Regular diagnosis) (see page 17-36)32-07 EPS control unit internal circuit (current sensor) (Steering diagnosis) (see page 17-36)32-08 Current sensor (Regular diagnosis) (see page 17-37)32-09 Current sensor (Initial diagnosis) (see page 17-37)33-01 Lower FET stuck ON (Initial diagnosis) (see page 17-38)33-02 Upper FET stuck ON (Initial diagnosis) (see page 17-40)33-06 Lower FET stuck ON (Regular diagnosis) (see page 17-38)33-07 Upper FET stuck ON (Regular diagnosis) (see page 17-40)34-01 Power relay stuck ON (IG switch is OFF) (see page 17-42)34-02 Fail-safe relay stuck ON (Initial diagnosis) (see page 17-42)35-01 EPS control unit internal circuit (CPU) (Initial diagnosis/Regular

diagnosis)(see page 17-36)

35-02 EPS control unit internal circuit (EEPROM) (Initial diagnosis) (see page 17-36)35-03 EPS control unit internal circuit (EPS CPU) (Initial diagnosis) (see page 17-43)35-04 EPS control unit internal circuit (CPU communication) (Regular


35-05 EPS control unit internal circuit (motor/EPS CPU) (Initial diagnosis) (see page 17-43)35-06 EPS control unit internal circuit (ITN communication) (Regular diagnosis) (see page 17-36)35-07 EPS control unit internal circuit (INHL/INHR ports) (Initial diagnosis/

Regular diagnosis)(see page 17-36)

NOTE:• Initial diagnosis: Done right after the engine starts and until the EPS indicator goes off.• Regular diagnosis: Done right after the initial diagnosis unitl the ignition switch is turned off.• Steering diagnosis: Done in during regular diagnosis while turning steering wheel.

(cont’d)

06/09/19 11:30:46 61SNC010_170_0022

DTC Detection Item Note

17-22

EPS Components

DTC Troubleshooting Index (cont’d)

36-02 EPS control unit internal circuit (INH output circuit) (Initial diagnosis) (see page 17-36)37-01 EPS control unit internal circuit (step-up circuit) (Initial diagnosis) (see page 17-36)51-01 Low/high voltage for the torque sensor (VT1 and VT2) (Regular


51-02 Torque sensor (VT3 differential-amplification Function) (Regulardiagnosis)

(see page 17-47)

51-03 Torque sensor (VT1, VT2 rapid change) (Regular diagnosis) (see page 17-47)51-06 Torque sensor (VT1, VT2 average) (Regular diagnosis) (see page 17-47)51-07 Torque sensor (VT1, VT2 initial check) (Initial diagnosis) (see page 17-47)61-04 Open/short in the motor harness (Steering diagnosis) (see page 17-50)71-01 Motor angle sensor (SIN/COS signals) (Steering diagnosis) (see page 17-52)71-02 Motor angle sensor (neutral position learning of SIN/COS) (Initial


71-03 Motor angle sensor (SIN/COS signals) (Steering diagnosis) (see page 17-52)71-04 Motor angle sensor (check signal) (Regular diagnosis) (see page 17-55)71-05 Motor angle sensor (SIN/COS signals changing amount) (Steering


71-06 Motor angle sensor (neutral position of SIN/COS) (Initial diagnosis) (see page 17-52)

NOTE:• Initial diagnosis: Done right after the engine starts and until the EPS indicator goes off.• Regular diagnosis: Done right after the initial diagnosis until the ignition switch is turned off.• Steering diagnosis: Done during regular diagnosis while turning steering wheel.

06/09/19 11:30:46 61SNC010_170_0023

ＳＮＣ７Ａ００Ｆ１８１００００００００ＨＢＡＴ０１

Symptom Diagnostic procedure

17-23

Symptom Troubleshooting Index

EPS indicator does not come on Symptom Troubleshooting (see page 17-57)EPS indicator does not go off, and noDTCs are stored

Symptom Troubleshooting (see page 17-58)

EPS indicator is not on, no DTCs arestored, but there is no power assist orpower assist is down

1.

2.

3.

Check the motor power wires between the EPS control unit andthe motor for a short to ground. Repair as needed.If the motor power wires are OK, replace the motor (short in themotor) (see page 17-60).Check the power and ground connections at the EPS control unit.

HDS does not communicate with theEPS control unit or the vehicle

Troubleshoot the DLC circuit (see page 11-218)

06/09/19 11:30:46 61SNC010_170_0024

――― ――― ―――

＋－

――― ――― ―――

――― ――― ―――――― ――― ―――

＊０１

＊０２

＊０３

ＳＮＣ７Ａ００Ｆ１８１００００００００ＣＡＡＴ００

EPS Control Unit Inputs and Outputs for Connector A (2P)

EPS Control Unit Inputs and Outputs for Connector B (2P)

EPS Control Unit Inputs and Outputs for Connector C (2P)

Terminalnumber

Wire color Terminal sign(Terminal name)

Description SignalTerminals Conditions Results

Terminalnumber



Terminalnumber



17-24

EPS Components

System Description

1 BLK PG(Power ground)

Ground for the actuatormotor

2 WHT B(Plus battery)

Power source for theactuator motor

2 GND At all times Battery voltage

1 GRN H-W Drives the actuator motor

1 RED H-U Drives the actuator motor2 BLU H-V Drives the actuator motor

Wire side of female terminals



06/09/19 11:30:46 61SNC010_170_0025

――― ――― ―――

－

－

――― ――― ―――

――― ――― ―――

――― ――― ―――

――― ――― ―――

――― ――― ―――

――― ――― ―――

――― ――― ―――

－

－

――― ――― ―――

――― ――― ―――

――― ――― ―――

＊０４EPS Control Unit Inputs and Outputs for Connector D (28P)

Terminalnumber



17-25

1 WHT CAN-H(CAN-HI)

CAN communication circuit

3 BLU NEP(Engine pulse)

Detects tachometer signal 3 GND With engine running Pulses

7 BRN SCS(Service check signal)

Detects service checkconnector signal

7 GND SCS not grounded Battery voltage

8 LT GRN VS2(Voltage sensor 2)

Detects torque sensorsignal

9 BRN PVF(Voltage fade)

Drives the torque sensor

10 GRN VS1(Voltage sensor 1)

Detects torque sensorsignal

12 PNK S1(Signal 1)

Detects motor angle sensorsignal

13 BLU R1(Motor angle sensor 1)


14 BRN S2(Signal 2)


15 RED CAN-L(CAN-LO)

CAN communication circuit

16 YELGRY

IG 1(Ignition 1)

Power source for activatingthe systrem

16 GND Ignition switch ON (II) Battery voltageIgnition switch OFF 0 V

17 LT BLU K-LINE(Data link connector)

Communicates with HDS 17 GND HDS not connected About 5 V

26 BRN S3(Signal 3)


27 PNK R2(Motor angle sensor 2)


28 BLU S4(Signal 4)


1: ’06 model2: ’07 model

1

2


06/09/19 11:30:47 61SNC010_170_0026

＊９０

ＳＮＣ７Ａ００Ｆ１８１００００００００ＥＡＡＴ００

17-26

EPS Components

Circuit Diagram

BATTERY

GAUGE CONTROLMODULE (TACH)

IGNITIONSWITCH

WHT

UNDER-HOODFUSE/RELAY BOX

BRN

BLU

UNDER-DASHFUSE/RELAY BOX

DATA LINKCONNECTOR (DLC)

EPSINDICATOR

BRN

WHT

RED BLU

WHT

RED

WHT

RED

ORN

LT BLU

WHT

PCM

BRN

3 6 F16

Q9IG1 HOT in ON (II)and START (III)

D2

B1

H1YEL*GRY*

No. 10 (7.5 A)

No. 2 (50 A) No. 4 (7.5 A)

CAN-H

17

1

19

CAN-L

IG1

CAN-H

A28

A36

A37

CAN-L

NEP

CAN-L

6

14

9

SCS

CAN-H

7

K-LINE

No. 1 (70 A)

No. 1 (100 A)

IG1 1

2

06/09/19 11:30:47 61SNC010_170_0027

＊９０

＋

17-27

EPS CONTROL UNIT

WHT

BLU

WHT

RED

BRN

STEERING GEARBOX

PNK

PNK

BLU

BRN

GRN

YEL

BLU

MOTOR ANGLESENSOR

BRN

BLU

BLK

BRN

RED

MOTOR

BLU

RED

GRN

WHT

BLK

RED

BLK

GRN

BRN

LT GRN

TORQUESENSOR

PNK

BLU/RED

WHT/GRN

LT BLU

YEL*GRY*

5 VREGULATOR

FAIL-SAFERELAY

POWER RELAY

FAIL-SAFERELAY

IG1 VCC

B

A2

IG1

D16

D3

NEP

D1

D15

D7

D17

SCS

CAN-L

CAN-H

K-LINE

D13

R2

R1

S3

S1

5

2

4

1

S4

S2

6

3

H-V

H-U

H-W

2

1

1

PG

D12

D27

D26

D14

D28

B1

C1

C2

A1

VS1

D10

PVF

D9

VS2

D8

CANCONTROLLER

R2

R1

S3

S1

S4

S2

H-V

H-U

H-W

VS1

PVF

VS2

1

2

3

G402

G403

: 12 V

: 5 V

*1: ’06 model*2: ’07 model

1

2

(cont’d)

06/09/19 11:30:47 61SNC010_170_0028

＊０２

17-28

EPS Components

Circuit Diagram (cont’d)

EPS CONTROL UNITCONNECTOR A (2P)

EPS CONTROL UNITCONNECTOR B (2P)

MOTOR ANGLE SENSOR6P CONNECTOR

MOTOR 2PCONNECTOR

MOTOR 1PCONNECTOR

DATA LINK CONNECTOR (DLC)

GAUGE CONTROL MODULE (TACH) 36P CONNECTOR

UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)

EPS CONTROL UNITCONNECTOR D (28P)

EPS CONTROL UNITCONNECTOR C (2P)

TORQUE SENSOR3P CONNECTOR

PCM CONNECTOR A (44P)

UNDER-DASH FUSE/RELAY BOXCONNECTOR Q (16P)

UNDER-HOOD FUSE/RELAY BOXCONNECTOR B (1P)



Terminal side of male terminals

Terminal side of female terminals



06/09/19 11:30:47 61SNC010_170_0029

－

＊０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ１１０１ＦＡＡＴ０１

－

－

－

－

DTC 11-01:

YES

NO

YES

NO

17-29

DTC Troubleshooting

EPS CONTROL UNIT CONNECTOR D (28P)

IG1 (YEL)* (GRY)*

*1 : ’06 model*2 : ’07 model

1 2

Low/High IG1-terminal Voltage(Initial diagnosis)

1. Clear the DTC with the HDS.


3. Start the engine.

4. Wait at least 60 seconds.

Go to step 5.

Check for loose wires or poor connections. Ifthe connections are good, the system is OK at thistime.


6. Disconnect EPS control connector D (28P).



9. Measure voltage between EPS control unitconnector D (28P) terminals No. 16 and bodyground.

Check for loose terminals in the EPS controlunit connectors, and repair if necessary. If no poorconnections are found, replace the EPS control unit(see page 17-79).

Check for a poor connection at the 12 Vbattery (see page 22-58). If they are good, go to thecharging system indicator circuit Troubleshooting(see page 12-174).


Does the EPS indicator come on?

Is the voltage between 9.63 16.6 V?

06/09/19 11:30:47 61SNC010_170_0030

－

＊０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ１１０２ＦＡＡＴ０１

－

－

－

－

DTC 11-02:

YES

NO

YES

NO

17-30

EPS Components

DTC Troubleshooting (cont’d)


IG1 (YEL)* (GRY)*

*1 : ’06 model*2 : ’07 model

1 2

Low/High IG1-terminal Voltage(Regular diagnosis)





Go to step 5.



6. Disconnect EPS control connector D (28P).



9. Measure voltage between EPS control unitconnector D (28P) terminals No. 16 and bodyground.


Check for a poor connection at the 12 Vbattery (see page 22-58). If they are good, go to thecharging system indicator circuit Troubleshooting(see page 12-174).



Is the voltage between 9.20 17.4 V?

06/09/19 11:30:48 61SNC010_170_0031

－

＊０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ１２０１ＦＡＡＴ００

＋

－

－

－

－

－

－

DTC 12-01:

YES

NO

YES

NO

YES

NO

17-31

B (WHT)

EPS CONTROL UNIT CONNECTOR A (2P)

Low-High VBU Voltage (Regulardiagnosis)


2. Connect the HDS to the data link connector (DLC).


4. Check the BATTERY in the DATA LIST with the HDS.


Go to step 5.


6. Check the No.1 (70 A) fuse in the under-hood fuse/relay box.

Reinstall the fuse, and go to step 7.

Replace the fuse, and recheck. If the fuse isblown, check for a short to body ground in this fusecircuit.

7. Disconnect EPS control unit connector A (2P) andconnector D (28P).

8. Measure voltage between EPS control unitconnector A (2P) terminal No. 2 and body ground.


Repair open in the wire between the EPScontrol unit and No. 1 (70 A) fuse in the under-hoodfuse/relay box.


Is the voltage at 9.2 17.4 V?

Is the fuse OK ?

Is there battery voltage?

06/09/19 11:30:48 61SNC010_170_0032

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ２１０１ＦＡＡＴ０１

－

－

－

－

－

－

DTC 21-01:

DTC 21-02:

YES

NO

YES

NO

YES

NO

17-32

EPS Components


Excessive Change of the VehicleSpeed Signal (Regular diagnosis)

Comparison between the VehicleSpeed and the Engine Speed Signal (Regulardiagnosis)

NOTE:• If the MIL indicator is on, troubleshoot the fuel and

emissions systems first.• Even though the system is operating normally, the

EPS indicator will come on caused by the detectingcondition of DTC 21-01 or DTC 21-02.


2. Raise the vehicle, and support it with safety standsin the proper locations (see page 1-8), and allow allwheels to rotate freely.


4. Start the engine, test the vehicle in the D position.

5. Check the VEHICLE SPEED in the DATA LIST withthe HDS.

The system is OK at this time.

Go to step 6.

6. Check for DTCs in the A/T system with the HDS.

Troubleshoot the indicated DTC.

Go to step 7.

7. Start the engine and check the tachometer.

Go to step 8.

Troubleshoot the gauge control module (tach)(see page 22-209).


9. Short the SCS line with the HDS.

10. Disconnect PCM connector A (44P) and EPS controlunit connector D (28P).

Is the vehicle speed indicated?

Is DTC P0721, or P0722 indicated?

Is the tachometer working correctly?

06/09/19 11:30:48 61SNC010_170_0033

０１０２

－

－

－

－

YES

NO

YES

NO

17-33


CAN-H (WHT)

CAN-H (WHT)



CAN-L (RED)

CAN-L (RED)


11. Check for continuity between EPS control unitconnector D (28P) terminals No. 1 and PCMconnector A (44P) terminals No. 36.

Go to step 12.

Repair open in the wire between the EPScontrol unit and the PCM.








Is there continuity? Is there continuity?

06/09/19 11:30:48 61SNC010_170_0034

＊０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ２２０１ＦＡＡＴ００

－

－－

－

DTC 22-01:

YES

NO YES

NO

17-34

EPS Components


NEP (BLU)


Engine Speed Signal (Initialdiagnosis)

NOTE: If the MIL indicator is on, troubleshoot the fueland emissions systems first.




4. Check the ENGINE SPEED in the DATA LIST withthe HDS.

Go to step 5.



6. Disconnect EPS control unit connector D (28P).


8. Measure voltage between EPS control unitconnector D (28P) terminal No. 3 and body ground.


Go to step 9.

Wire side of female terminalsIs there 0 rpm at idle?

Is there any voltage?

06/09/19 11:30:48 61SNC010_170_0035

＊０２＊０３

－

－－

－

YES

NO YES

NO

17-35

NEP (BLU)




NEP (BLU)

NEP (BLU)


10. Check for continuity between EPS control unitconnector D (28P) terminal No. 3 and body ground.

Repair short to body ground in the wirebetween the EPS control unit and the PCM.

Go to step 11.

11. Short the SCS line with the HDS.

12. Disconnect PCM connector A (44P).


Check for loose terminals in the PCMconnector A (44P), and repair if necessary. If nopoor connections are found replace the PCM(see page 11-241).





Is there continuity?


06/09/19 11:30:49 61SNC010_170_0036

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３２０１ＦＡＡＴ００ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３２０７ＦＡＡＴ０２

－

－

－

－

－

－

－

－

DTC 32-01:

DTC 32-02:

DTC 35-01:

DTC 35-02:

DTC 35-04:

DTC 35-06:

DTC 35-07:

DTC 36-02:

DTC 37-01:

DTC 32-07:

YES

NO

YES

NO

YES

NO

YES

NO

17-3617-36

EPS Components


EPS Control Unit Internal Circuit(Current Sensor) (Initial diagnosis)

EPS Control Unit Internal Circuit(Current Sensor) (Regular diagnosis)

EPS Control Unit Internal Circuit(CPU) (Initial diagnosis/Regular diagnosis)

EPS Control Unit Internal Circuit(EEPROM) (Initial diagnosis)

EPS Control Unit Internal Circuit(CPU Communication) (Regular diagnosis)

EPS Control Unit Internal Circuit(ITN Communication) (Regular diagnosis)

EPS Control Unit Internal Circuit(INHL/INHR Ports) (Initial diagnosis/Regulardiagnosis)

EPS Control Unit Internal Circuit(INH Output Circuit) (Initial diagnosis)

EPS Control Unit Internal Circuit(Step-up Circuit) (Initial diagnosis)

EPS Control Unit Internal Circuit(Current Sensor) (Diagnosis when steeringwheel turning)




Go to step 4.

Check for loose terminals or poor connections.If the connections are good, the system is OK atthis time.

4. Check for DTCs with the HDS.


Troubleshoot the indicated DTC. If there areno DTCs, the system is OK at this time.




4. Turn the steering wheel to the right or left, and wait10 seconds or more.

Go to step 5.






Is DTC 32-01, 32-02, 35-01, 35-02, 35-04, 35-06,35-07, 36-02, or 37-01?


Is DTC 32-07 indicated?

06/09/19 11:30:49 61SNC010_170_0037

０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３２０８ＦＡＡＴ００

－

－

－

－－

－

DTC 32-08:

DTC 32-09:

YES

NO

YES

NO

YES

NO

17-37

EPS CONTROL UNITCONNECTOR B

EPS CONTROL UNITCONNECTOR C

No. 1

No. 2

No. 1

No. 2

No. 1

No. 1

EPS CONTROL UNIT CONNECTOR B (2P)

H-V(BLU)

H-U(RED)

H-W(GRN)

EPS CONTROL UNIT CONNECTOR C (2P)

Current Sensor (Regulardiagnosis)

Current Sensor (Initial diagnosis)





Go to step 5.



Go to step 6.



7. Disconnect EPS control unit connector B (2P) andconnector C (2P).

8. Check for continuity between the followingterminals of the EPS control unit connector B (2P)and connector C (2P).

Check for loose terminals in the EPS controlunit connectors and motor connectors, and repair ifnecessary. If no poor connections are found,replace the EPS control unit (see page 17-79).

Go to step 9.

(cont’d)




Is DTC 32-08 or DTC 32-09 indicated?


06/09/19 11:30:49 61SNC010_170_0038

０２

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３３０１ＦＡＡＴ００

－

－

－

－

－

－

YES

NO

YES

NO

YES

NO

DTC 33-01:

DTC 33-06:

17-3817-38

EPS Components


No. 1

No. 2

No. 1

No. 2

H-W(RED)

H-U (BLK)

H-V (WHT)

MOTOR1P CONNECTOR

MOTOR2P CONNECTOR

No. 1

No. 1

MOTOR 1P CONNECTOR

MOTOR 2P CONNECTOR

9. Disconnect the motor 1P connector and motor 2Pconnector.

10. On the motor side, check for continuity between thefollowing terminals of the motor 1P and motor 2Pconnector.

Repair open in the wire harness between theEPS control unit and motor.

Open in the motor wire harness, or motorinternal circuit, replace the motor (see page 17-60).




Go to step 4.



Go to step 5.




Lower FET Stuck ON (Initialdiagnosis)

Lower FET Stuck ON (Regulardiagnosis)






06/09/19 11:30:49 61SNC010_170_0039

＊０１

＊０２

＊０３

＊０４

－

－－

－

YES

NO

YES

NO

17-39


H-W (GRN)


H-U (RED)

H-V (BLU)


H-W (GRN)


H-U (RED)

H-V (BLU)

7. Check for continuity between body ground and EPScontrol unit connector B (2P) No. 1 terminal,connector C (2P) No. 1 terminal, connector C (2P)No. 2 terminal individually.

Go to step 8.



9. Check for continuity between body ground and EPScontrol unit connector B (2P) No. 1 terminal,connector C (2P) No. 1 terminal, connector C (2P)No. 2 terminal individually.

Repair short to body ground in the wirebetween the EPS control unit and motor.

Short in the motor wire harness, or the motorinternal circuit, replace the motor (see page 17-60).




Wire side of female terminalsIs there continuity?


06/09/19 11:30:49 61SNC010_170_0040

＊０１

＊０２

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３３０２ＦＡＡＴ００

－

－

－

－

－

－

DTC 33-02:

DTC 33-07:

YES

NO

YES

NO

YES

NO

17-40

EPS Components



H-W (GRN)


H-U (RED)

H-V (BLU)

Upper FET Stuck ON (Initialdiagnosis)

Upper FET Stuck ON (Regulardiagnosis)




Go to step 4.



Go to step 5.





8. Measure voltage between body ground and EPScontrol unit connector B (2P) No. 1 terminal,connector C (2P) No. 1 terminal, connector C (2P)No. 2 terminal individually.

Go to step 9.

Check for loose terminals in the EPS controlunit connectors and motor connectors, and repair ifnecessary. If no poor connections are found,replace the EPS control unit (see page 17-79).







06/09/19 11:31:03 61SNC010_170_0041

＊０３

＊０４

－

－

YES

NO

17-41


H-W (GRN)


H-U (RED)

H-V (BLU)



12. Measure voltage between body ground and EPScontrol unit connector B (2P) No.1 terminal,connector C (2P) No. 1 terminal, and connector C(2P) No. 2 terminal individually.

Repair short to power in the wire betweenthe EPS control unit and motor.

Short to power in the motor wire harness, ormotor internal circuit, replace the motor (see page17-60).




06/09/19 11:31:04 61SNC010_170_0042

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３４０１ＦＡＡＴ００ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３４０２ＦＡＡＴ０２

－

－

－

－

－

－

－

－

DTC 34-01: DTC 34-02:

YES

NO

YES

NO

YES

NO

YES

NO

17-4217-42

EPS Components


Power Relay Stuck ON (Ignitionswitch is OFF)

Fail-safe Relay Stuck ON (Initialdiagnosis)




Go to step 4.








Go to step 4.



Go to step 5.









06/09/19 11:31:04 61SNC010_170_0043

＊０１

０２

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ３５０３ＦＡＡＴ００

－

－

－

－

－

－

YES

NO

YES

NO

YES

NO

DTC 35-03:

DTC 35-05:

17-4317-43


H-W (GRN)


H-U (RED)

H-V (BLU)

8. Measure voltage between body ground and EPScontrol unit connector B (2P) No. 1 terminal,connector C (2P) No. 1 terminal, and connector C(2P) No. 2 terminal individually.

Repair short to power in the wire harnessbetween the EPS control unit and the motor.

Replace the EPS control unit (see page 17-79).




Go to step 4.



5. Wait 10 seconds or more.




EPS Control Unit Internal Circuit(EPS CPU) (Initial diagnosis)

EPS Control Unit Internal Circuit(Motor/EPS CPU) (Initial diagnosis)






06/09/19 11:31:04 61SNC010_170_0044

－

－－

０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ５１０１ＦＡＡＴ００

－

－

－

－

－

－

DTC 51-01:

YES

NO

YES

NO

YES

NO

17-44

EPS Components



PVF (BRN)VS1 (GRN)

Low/High Voltage for the TorqueSensor (VT1 and VT2) (Regular diagnosis)




4. Check the ADVT1 in the DATA LIST with the HDS.

Go to step 5.

Go to step 6.

5. Check the ADVT2 in the DATA LIST with the HDS.


Go to step 6.



8. Measure resistance between EPS control unitconnector D (28P) terminals No. 9 and No. 10.

Go to step 9.

Go to step 13.


Is the voltage at 0.90 3.55 V?

Is the voltage at 1.02 3.73 V?Is the resistance between 12 15 ?

06/09/19 11:31:04 61SNC010_170_0045

－

０２

０３

＊０１

－

－

－

－

－

－

YES

NO

YES

NO

YES

NO

17-45


PVF (BRN)VS2 (LT GRN)


PVF (BRN)


PVF (BRN)


Go to step 10.

Go to step 15.


Go to step 11.


11. Disconnect the torque sensor 3P connector fromthe steering gearbox.


Repair short to ground in the wire betweenthe torque sensor and the EPS control unit.

Faulty torque sensor (short in the sensorinternal circuit), replace the steering gearbox(see page 17-62).

(cont’d)



Wire side of female terminalsIs the resistance between 12 15 ?



06/09/19 11:31:04 61SNC010_170_0046

－－

＊０２０６

－

－

－

－

YES

NO

YES

NO

17-46

EPS Components


VS1

PVF

TORQUE SENSOR 3P CONNECTOR

VS2

PVF



14. On the sensor side, measure resistance betweentorque sensor terminals No. 1 and No. 2.

Repair open or short between the PNK andBLU/RED wires in the torque sensor circuit betweenthe torque sensor and the EPS control unit.

Faulty torque sensor (short or open in theinternal circuit), replace the steering gearbox(see page 17-62).



Repair open or short between the WHT/GRNand BLU/RED wires in the torque sensor circuitbetween the torque sensor and the EPS controlunit.


Terminal side of male terminals Terminal side of male terminals

Is the resistance between 12 15 ? Is the resistance between 12 15 ?

06/09/19 11:31:05 61SNC010_170_0047

－

－

０１

０２

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ５１０２ＦＡＡＴ０１

－

－

－

－

－

－

－

－

DTC 51-02:

DTC 51-03:

DTC 51-06:

DTC 51-07:

YES

NO

YES

NO

YES

NO

YES

NO

17-47


PVF (BRN)VS1 (GRN)


PVF (BRN)VS2 (LT GRN)

Torque Sensor (VT3 Differential-amplification Function) (Regular diagnosis)

Torque Sensor (VT1, VT2 Rapid-change) (Regular diagnosis)

Torque Sensor (VT1, VT2Average) (Regular diagnosis)

Torque Sensor (VT1, VT2 InitialCheck) (Initial diagnosis)




Go to step 4.



Go to step 5.





Go to step 8.

Go to step 12.


Go to step 9.

Go to step 14.

(cont’d)




Is DTC 51-02, 51-03, 51-06 or DTC 51-07indicated?

Is the resistance between 12 15 ?


06/09/19 11:31:05 61SNC010_170_0048

０３＊０１

－

－

－

－

YES

NO

YES

NO

17-48

EPS Components



PVF (BRN)


PVF (BRN)


Go to step 10.




Repair short to ground in the wire betweenthe torque sensor and the EPS control unit.

Faulty torque sensor (short in the sensorinternal circuit), replace the steering gearbox(see page 17-62).

Wire side of female terminals Wire side of female terminals


06/09/19 11:31:05 61SNC010_170_0049

－－

＊０２０６

－

－

－

－

YES

NO

YES

NO

17-49

VS1

PVF


VS2

PVF




Repair open or short between the PNK andBLU/RED wires in the torque sensor circuit betweenthe torque sensor and the EPS control unit.




Repair open or short between the BLU/REDand WHT/GRN wires in the torque sensor circuitbetween the torque sensor and the EPS controlunit.


Terminal side of male terminals Terminal side of male terminals

Is the resistance between 12 15 ? Is the resistance between 12 15 ?

06/09/19 11:31:05 61SNC010_170_0050

０１

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ６１０４ＦＡＡＴ００

－

－

－

－－

－

DTC 61-04:

YES

NO

YES

NO YES

NO

17-50

EPS Components


EPS CONTROL UNITCONNECTOR B

EPS CONTROL UNITCONNECTOR C

No. 1

No. 2

No. 1

No. 2

No. 1

No. 1


H-V(BLU)

H-W(GRN)


H-U(RED)

Open/Short in the Motor Harness(Steering diagnosis)





Go to step 5.



Go to step 6.




8. Check for continuity between the followingterminals of the EPS control unit connector B (2P)and connector C (2P).

Go to step 9.

Go to step 12.






06/09/19 11:31:06 61SNC010_170_0051

＊０１

＊０２

＊０３

＊０４

－

－

－

－

YES

NO

YES

NO

17-51


H-W (GRN)


H-U (RED)

H-V (BLU)


H-W (GRN)


H-U (RED)

H-V (BLU)

9. Check for continuity between body ground and EPScontrol unit connector B (2P) No. 1 terminal,connector C (2P) No. 1 terminal, and connector C(2P) No. 2 terminal individually.

Go to step 10.


10. Disconnect the motor 1P connector and the motor2P connector.

11. Check for continuity between body ground and EPScontrol unit connector B (2P) No.1 terminal,connector C (2P) No. 1 terminal, and connector C(2P) No. 2 terminal individually.

Repair short to body ground in the wireharness between the EPS control unit and themotor.

Short to the body ground in the motor wireharness, or motor internal circuit, replace the motor(see page 17-60).

(cont’d)






06/09/19 11:31:06 61SNC010_170_0052

０７

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ７１０１ＦＡＡＴ００

－

－

－

－

－

－

YES

NO

YES

NO

YES

NO

DTC 71-01:

DTC 71-02:

DTC 71-03:

DTC 71-05:

DTC 71-06:

17-5217-52

EPS Components


No. 1

No. 2

No. 1

No. 2

H-W(RED)

H-U (BLK)

H-V (WHT)

MOTOR1P CONNECTOR

MOTOR2P CONNECTOR

No. 1

No. 1

MOTOR 1P CONNECTOR

MOTOR 2P CONNECTOR

12. Disconnect the motor 1P connector and the motor2P connector.

13. On the motor side, check for continuity between thefollowing terminals of the motor 1P and the motor2P connector.

Repair open in the wire harness between theEPS control unit and the motor.

Open in the motor wire harness, or motorinternal circuit, replace the motor (see page 17-60).





Go to step 5.



Go to step 6.



Motor Angle Sensor (SIN/COSSignals) (Steering diagnosis)

Motor Angle Sensor (NeutralPosition Learning of SIN/COS) (Initialdiagnosis)

Motor Angle Sensor (SIN/COSSignals) (Steering diagnosis)

Motor Angle Sensor (SIN/COSSignals Changing Amount) (Steeringdiagnosis)

Motor Angle Sensor (NeutralPosition of SIN/COS) (Initial diagnosis)



Is there continuity? Does the EPS indicator come on?

Is DTC 71-01, 71-02, 71-03, 71-05 or 71-06indicated?

06/09/19 11:31:06 61SNC010_170_0053

－－－－－－

＊０１＊０２

－

－

－

－YES

NO

YES

NO

17-53

No. 27 (R2)No. 13 (R1)

No. 12 (S1)

No. 14 (S2)

No. 26 (S3)

No. 28 (S4)



S1 (PNK)

S3 (BRN)S4(BLU)

S2(BRN)

R1 (BLU)

R2 (PNK)


S3 (BRN)

R2 (PNK)

S4 (BLU)

S2 (BRN)

R1 (BLU)

S1 (PNK)


8. Measure resistance between the followingterminals of EPS control unit connector D (28P).

Go to step 9.

Go to step 12.

9. Check for continuity between body ground and EPScontrol unit connector D (28P) No. 12 terminal,No. 13 terminal, No. 14 terminal, No. 26 terminal,No. 27 terminal, and No. 28 terminal individually.

Go to step 10.


10. Disconnect the motor angle sensor 6P connector.

(cont’d)

Wire side of female terminalsWire side of female terminals

Is the resistance between R1 R2 13 25 , S1S3 26 49 , and S2 S4 26 49 ?


06/09/19 11:31:06 61SNC010_170_0054

－－－－－－

＊０３＊０４

－

－－

－

YES

NO

YES

NO

17-54

EPS Components


MOTOR ANGLE SENSOR 6P CONNECTOR

S3(BLU)

R2(GRN)

S4 (RED)

S2 (BLK)

R1 (BRN)

S1 (YEL)

No. 5 (R2)No. 2 (R1)

No. 1 (S1)

No. 3 (S2)

No. 4 (S3)

No. 6 (S4)



S1 (YEL)

S3 (BLU)

R1 (BRN)

S2 (BLK)

S4 (RED)

R2 (GRN)

11. Check for continuity between body ground andmotor angle sensor 6P connector No. 1 terminal,No. 2 terminal, No. 3 terminal, No. 4 terminal, No. 5terminal, and No. 6 terminal individually.

Faulty motor angle sensor (Internal failure),or short to body ground in the wire (sensor side),replace the motor (see page 17-60).

Repair short to body ground in the wirebetween the motor angle sensor 6P connector andthe EPS control unit.


13. Measure resistance between the followingterminals of the motor angle sensor 6P connector.

Open or short to body ground in the wirebetween the motor angle sensor 6P connector andthe EPS control unit.

Faulty motor angle sensor (internal failure), orshort to body ground in the wire (sensor side),replace the motor (see page 17-60).




Is the resistance between R1 R2 13 25 , S1S3 26 49 , and S2 S4 26 49 ?

06/09/19 11:31:07 61SNC010_170_0055

－

０１

０２

ＳＮＣ７Ａ００Ｋ７２２０００Ｒ７１０４ＦＡＡＴ００

－

－

－

－

－

－

－

－

DTC 71-04:

YES

NO

YES

NO

YES

NO

YES

NO

17-55


R1 (BLU)

R2 (PNK)


R1 (BLU)

R2 (PNK)

Motor Angle Sensor (CheckSignals) (Regular diagnosis)





Go to step 5.



Go to step 6.



7. Disconnect the EPS control unit connector D (28P).

8. Measure resistance between the EPS control unitconnector D (28P) terminals No. 13 and No. 27.

Go to step 9.

Go to step 12.

9. Check for continuity between body ground and theEPS control unit connector D (28P) No. 13 terminaland the No. 27 terminal individually.

Go to step 10.


(cont’d)







06/09/19 11:31:07 61SNC010_170_0056

－

＊０１＊０２

－

－

－

－

YES

NO

YES

NO

17-56

EPS Components



R2 (GRN)

R1 (BRN)


R2 (GRN)

R1 (BRN)


11. Check for continuity between body ground andmotor angle sensor 6P connector No. 2 terminaland the No. 5 terminal individually.

Faulty motor angle sensor (internal failure),or short to body ground in the wire (sensor side),replace the motor (see page 17-60).

Repair short to body ground in the wireharness between the motor angle sensor 6Pconnector and the EPS control unit.


13. Measure resistance between the motor anglesensor 6P connector terminals No. 2 and No. 5.

Open, or short to body ground in the wireharness between the motor angle sensor 6Pconnector and EPS control unit.

Faulty motor angle sensor (internal failure), orshort to body ground in the wire (sensor side),replace the motor (see page 17-60).

Terminal side of male terminalsTerminal side of male terminals

Is there continuity?Is the resistance between 13 25 ?

06/09/19 11:31:07 61SNC010_170_0057

ＳＮＣ７Ａ００Ｆ１８１００００００００ＦＡＡＴ００

－

－

EPS indicator does not come on

YES

NO

17-57

Symptom Troubleshooting

1. Turn the ignition switch ON (II), and watch the EPSindicator.


Troubleshoot the gauge control module (tach)(see page 22-209).


06/09/19 11:31:07 61SNC010_170_0058

＊０１

＊０２

ＳＮＣ７Ａ００Ｆ１８１００００００００ＦＡＡＴ０１

＋

－

－

－

－

－

－

－

－

EPS indicator does not go off, and no DTCsare stored

YES

NO

YES

NO

YES

NO

YES

NO

17-58

EPS Components

Symptom Troubleshooting (cont’d)


B (WHT)


PG (BLK)





Troubleshoot the indicated DTC.

Go to step 5.


6. Check the No. 1 (70 A) fuse in the under-hood fuse/relay box.

Reinstall the fuse, and go to step 7.

Replace the fuse, and recheck. If the fuse isblown, check for a short to body ground in this fusecircuit.

7. Disconnect EPS control unit connector A (2P).

8. Measure voltage between EPS control unitconnector A (2P) terminal No. 2 and body ground.

Go to step 9.

Repair open in the wire between the EPScontrol unit and under-hood fuse/relay box.

9. Check for continuity between EPS control unitconnector A (2P) terminal No. 1 and body ground.

Go to step 10.

Repair open in the wire between the EPScontrol unit and body ground (G402).



Are any DTCs indicated?

Is the fuse OK ?



06/09/19 11:31:07 61SNC010_170_0059

＊０３

＊０４－

－

－

－

－

－

YES

NO

YES

NO

YES

NO

17-59



CAN-H (WHT)

CAN-H (WHT)


CAN-L (RED)

CAN-L (RED)


10. Check for DTCs in the gauge control module (tach)with the HDS.


Go to step 11.

11. Disconnect the gauge control module (tach) 36Pconnector and EPS control unit connector D (28P).

12. Check for continuity between EPS control unitconnector D (28P) terminal No. 1 and gauge controlmodule (tach) 36P connector terminal No. 1.

Go to step 13.

Repair open in the wire between the EPScontrol unit and the gauge control module (tach).

13. Check for continuity between EPS control unitconnector D (28P) terminal No. 15 and gaugecontrol module (tach) 36P connector terminalNo. 19.


Repair open in the wire between the EPScontrol unit and the gauge control module (tach).





Are any DTCs indicated?



06/09/19 11:31:08 61SNC010_170_0060

０１

０２

０３

ＳＮＣ７Ａ００Ｆ１８１０００２５１４５ＫＤＡＴ００

Removal Installation

17-60

EPS Components

Motor Removal and Installation

A

B

A B

AB

C

D

8 x 1.25 mm20 N·m(2.0 kgf·m, 14 lbf·ft)

NOTE: Do not allow dust, dirt, or other foreign materialsto enter the steering gearbox.

1. Remove the steering gearbox (see page 17-62).

2. Disconnect the torque sensor 3P connector (A) fromthe steering gearbox, then remove the harnessclamp bolts and the ground terminal (B).

3. Remove the motor (A) from the steering gearbox,then remove the O-ring (B) and discard it.

1. Clean the mating surface of the motor (A) and thesteering gearbox.

2. Apply a thin coat of silicone grease to the newO-ring (B), and carefully fit it on the motor.

3. Apply grease (Shell steering gear grease or Honda’sequivalent steering gear grease) into the motorshaft (C).

4. Install the motor on the steering gearbox byengaging the motor shaft and the worm shaft (D).

5. Before tightening the bolts, turn the motor two orthree times to the right and left about 45 degrees.Make sure the motor is evenly seated on thesteering gearbox, and that the O-ring is not pinchedbetween the mating surfaces.

06/09/19 11:31:22 61SNC010_170_0061

０４

17-61

A

B

6 x 1.0 mm9.8 N·m(1.0 kgf·m,7.2 lbf·ft)

6. Connect the torque sensor 3P connector (A) to thesteering gearbox, then install the harness clampbolts and the ground terminal (B).

7. Finish the installation, and note these items;

• Make sure the torque sensor 3P connector isproperly connected.

• Make sure the motor and the EPS wires are notcaught or pinched by any parts.

8. Install the steering gearbox (see page 17-68).

06/09/19 11:31:23 61SNC010_170_0062

０１

０２

ＳＮＣ７Ａ００Ｆ１８１０００５７１１１ＫＤＡＴ００


Removal

17-62

EPS Components

Steering Gearbox Removal and Installation

A

AB

C

D

E

• Universal eyelet 07AAK-SNAA120• Ball joint remover, 28 mm 07MAC-SL0A202• Front subframe adapter VSB02C000016• 2006 Civic engine hanger VSB02C000025• Engine support hanger, A and Reds AAR-T-12566

Available through the American Honda Tool andEquipment program, 1-888-424-6857

Note these items during removal:• Use solvent and a brush to wash any oil and dirt off

the end of the steering gearbox. Avoid any electricalparts. Blow dry with compressed air.

• Make sure to remove the steering wheel beforedisconnecting the steering joint to avoid damagingthe cable reel.


2. Remove the cowl cover and under-cowl panel(see page 20-135).


4. Raise the front of the vehicle, and support it withsafety stands in the proper locations (see page 1-8).

5. Remove the front wheels.

6. Remove the steering wheel (see page 17-6).

7. Remove the driver’s dashboard undercover(see page 20-89).

8. Remove the steering joint cover (A).

9. Remove the steering joint bolt (A), and disconnectthe steering joint by moving the steering joint (B)toward the column. Hold the lower slide shaft (C)on the column with a piece of wire (D) between thejoint yoke (E) on the lower slide shaft to the jointyoke on the upper shaft (see step 9 on page 17-10).

06/09/19 11:31:23 61SNC010_170_0063

０３

３９

４０

０５

17-63

A

A

B

07AAK-SNAA12007AAK-SNAA120

VSB02C000025

A

B

C

07MAC-SL0A202

A

B

10. Remove the center guide (A) (if equipped), anddiscard it. The center guide is for factory assemblyonly.

11. Install the support eyelet to the threaded hole (A)on the cylinder head with a 10 x 1.25 mm bolt (B).

12. Install the front leg assembly (A), hook (B), andwing nut (C) from an A and Reds engine supporthanger (AAR-T-12566) onto the engine hanger(VSB02C000025). Carefully position the enginehanger on the vehicle, and attach the hook to theslotted hole in the universal eyelet (07AAK-SNAA120). Tighten the wing nut by hand to lift andsupport the engine.

NOTE: Use care when working around thewindshield.

13. Remove the cotter pin (A) from the 12 mm nut (B),and loosen the nut.

14. Separate the tie-rod ball joint and the knuckle usingthe ball joint remover (see page 18-11).

(cont’d)

06/09/19 11:31:23 61SNC010_170_0064

０６

０７

０８

０９

17-64

EPS Components

Steering Gearbox Removal and Installation (cont’d)

A B

A

B

C

D

A B

A

B

15. Remove the front splash shield (A) (see page20-143), and the front undercover (B) (see page20-145).

16. Disconnect the torque sensor 4P connector (A),motor angle sensor 6P connector (B), motor 1Pconnector (C), and motor 2P connector (D) frompassenger’s side of the steering gearbox. Wrap theconnectors with vinyl tape to avoid thecontamination from grease or water.

17. Remove the lower ball joint mounting bolt (A) andthe flange nuts (B) from the lower arm.

18. Disconnect the lower arm from the lower ballhousing.

19. Remove the exhaust hanger (A) from the three waycatalytic converter (TWC) (B).

06/09/19 11:31:24 61SNC010_170_0065

１０

４１

１１

１２

17-65

AVSB02C000016

B

A

B

A

B

A

A

20. Attach the front subframe adaptor (A) to the frontsubframe (B) and the transmission jack (modelnumber LSL-W9371) or the powertrain lift (modelnumber OTC-1585), then tighten the front subframeadaptor screw.

21. Make sure the front subframe is securely supportedby the jack with the front subframe adaptor.

22. Note the reference marks (A) on both sides of thesubframe that line up with the body (B).

23. Remove the front subframe middle mount bolt (A)from the left side.

24. Remove the front subframe middle mount bolt (A)from the right side.

(cont’d)

06/09/19 11:31:24 61SNC010_170_0066

１３

１４

１５

１６

17-66

EPS Components


A

A

A

A

B

25. Remove the two 12 mm flange bolts (A) from thelower torque rod bracket.

26. Remove the front subframe front mounting bolts(A) from the right and left sides of the vehicle.

27. Remove the front subframe rear mounting bolts (A)from the right and left sides of the vehicle.

28. Lower the front subframe and steering gearbox asan assembly by lowering the jack slowly.

29. Remove the heat shield (A) from the front subframe,then remove the harness clips (B).

06/09/19 11:31:25 61SNC010_170_0067

１７

１８

１９

２０

17-67

A

B

C

D

E

A

A

B

A

B

30. Remove the torque sensor 4P connector (A), motorangle sensor 6P connector (B), motor 1P connector(C), and motor 2P connector (D) from thepassenger’s side of the gearbox mounting bracket(E).

31. Remove the pinion shaft grommet (A) from the topof the torque sensor.

32. Remove the two 10 mm bolts from the right side ofthe steering gearbox, then remove the gearboxmounting bracket (A) and the mounting cushion (B).

33. Remove the four 10 mm flange bolts from the leftside of the steering gearbox, then remove thestiffener plates (A).

34. Remove the steering gearbox (B) from the frontsubframe.

(cont’d)

06/09/19 11:31:25 61SNC010_170_0068

２１

２２

２３

２４

Installation

17-68

EPS Components


A

10 x 1.25 mm59 N·m(6.0 kgf·m, 43 lbf·ft)

10 x 1.25 mm54 N·m(5.5 kgf·m,40 lbf·ft)

10 x 1.25 mm54 N·m(5.5 kgf·m,40 lbf·ft)

A

B

C

B

C10 x 1.25 mm38 N·m(3.9 kgf·m,28 lbf·ft)

A

B

B

B

A

B

C

D

1. Place the steering gearbox in position on the frontsubframe.

2. Loosely install the stiffener plates (A), and thegearbox mounting bolts on the left side of thesteering gearbox.

3. Position the cutout (A) on the mounting cushion (B)as shown, and install it on the right side of thesteering gearbox securely.

4. Install the gearbox mounting bracket (C) over themounting cushion, and loosely install the two10 mm bolts.

5. Tighten the 10 mm bolts on both sides of thesteering gearbox to the specified torque alternatelyin two or more steps.

6. Install the pinion shaft grommet (A). Align the slotin the pinion shaft grommet with the lug portion (B)on the torque sensor. The grommet must not havea gap at the mating surface of the grommet and thetorque sensor.

7. Install the torque sensor 4P connector (A), motorangle sensor 6P connector (B), motor 1P connector(C), and motor 2P connector (D) on the right side ofthe gearbox mounting bracket.

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２５

４２

＊０１

＊０２

17-69

B

A

6 x 1.0 mm9.8 N·m(1.0 kgf·m,7.2 lbf·ft)

A

B

A

B

A14 x 1.5 mm103 N·m(10.5 kgf·m, 75.9 lbf·ft)

A14 x 1.5 mm103 N·m(10.5 kgf·m,75.9 lbf·ft)

8. Install the harness clips (A) to the heat shield (B),then install the heat shield to the front subframe.

9. Carefully raise the front subframe with the frontsubframe adapter and the transmission jack or thepowertrain lift until the subframe is in position,then loosely install the new subframe mountingbolts.

NOTE: Be sure that the pinion shaft grommet is inplace securely. Check whether the pinion shaftgrommet is not turning up. Incorrect installationcan cause leakage of water, mud, and noise.

10. Align the front subframe reference marks (A) to thebody (B), as noted during removal.

11. Tighten the new front subframe rear mountingbolts (A) to the specified torque.

12. Tighten the new front subframe front mountingbolts (A) to the specified torque.

(cont’d)

Replace.

Replace.

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２８

＊０３

＊０４

３１

17-70

EPS Components


A12 x 1.25 mm64 N·m(6.5 kgf·m, 47 lbf·ft)

A12 x 1.25 mm64 N·m(6.5 kgf·m,47 lbf·ft)

A12 x 1.25 mm64 N·m(6.5 kgf·m,47 lbf·ft)

A

B

13. Install the lower torque rod bracket bolts (A), andtighten them to the specified torque.

14. Install the new front subframe middle mount bolt(A) on the left side, and tighten it to the specifiedtorque.

15. Install the new front subframe middle mount bolt(A) on the right side, and tighten it to the specifiedtorque.

16. Install the exhaust hanger (A) to the three waycatalytic converter (TWC) (B).

Replace.

Replace.

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３３

３４

＊０６

17-71

D12 x 1.25 mm59 N·m(6.0 kgf·m, 43 lbf·ft)


B

A

A

B

C

D

A B

B12 x 1.25 mm54 N·m(5.5 kgf·m,40 lbf·ft)

A

C

C

17. Connect the lower arm (A) to the lower ball joint (B).

18. Install a new flange bolt (C) and the new flange nuts(D). After lightly tightening all there fasteners,tighten them to the specified torque in thefollowing order; the flange nut on the front, theflange nut on the rear, then the flange bolt.

19. Remove the vinyl tape, then connect the torquesensor 4P connector (A), motor angle sensor 6Pconnector (B), motor 1P connector (C), and motor2P connector (D) to the steering gearbox. Makesure to push these connectors until you hear a clickso that the connectors are secured.

20. Remove the engine hanger and universal eyelet.

21. Install the front splash shield (A) (see page 20-143),and the front undercover (B) (see page 20-145).

22. Wipe off any grease contamination from the balljoint tapered section and the threads. Reconnectthe tie-rod ends (A) to the steering knuckles. Installthe 12 mm nut (B), and tighten it.

23. Install the new cotter pin (C), and bend it as shown.

(cont’d)

Replace.Replace.

Replace.

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３７

３８

±

17-72

EPS Components


73 ° 20 °

B

A

FRONT


A

B

A

24. Center the steering rack within its stroke in thesteering joint connection.

25. With the rack in the straight ahead driving position,cut the wire (A) and slip the lower end of thesteering joint onto the pinion shaft (B) in the rangeshown.

26. Align the bolt hole (A) on the steering joint with thegroove (B) around the pinion shaft, and looselyinstall the joint bolt (C). Be sure that the joint bolt issecurely in the groove in the pinion shaft. Pull onthe steering joint to make sure that the steeringjoint is fully seated. Tighten the steering joint boltto the specified torque.

27. Install the steering joint cover (A).

28. Install the driver’s dashboard undercover (see page20-89).

29. Install the front wheel, then set the wheels in thestraight ahead position.

30. Install the under-cowl panel and cowl cover(see page 20-135).

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Symptom Probable cause

17-73

31. Install the steering wheel (see page 17-8).

32. Holding the tires raised off the ground (lifted up),check for the following symptoms by turning thesteering wheel fully to the right and left severaltimes.

Rubbing soundcoming from thelower steeringcolumn area.

Steering column jointis contacting the cover.

Grating sound fromthe lower steeringcolumn area, or arough feeling duringsteering.

Poor engagement ofthe pinion shaftserrations.

Noise from aroundthe steering wheelduring steering.

Poor engagement ofthe SRS cable reel withthe steering wheel, or adamaged cable reel.

33. Reconnect the negative cable to the battery and dothe following items:


• Turn the ignition switch ON (II); the SRS indicatorshould come on for about 6 seconds and then gooff.


• Set the clock.• Check the horn and turn signal switch operation.• Verify function of switches on the steering wheel.• Make sure the steering wheel is centered.• Do the memorizing for the torque sensor neutral

position (see page 17-20).

34. After installation, do the following checks:

• Start the engine, and let it idle. Turn the steeringwheel from lock-to-lock several times. Check thatthe EPS indicator does not come on.

• Check the steering wheel spoke angle. If steeringspoke angles to the right and left are not equal(steering wheel and rack are not centered),correct the engagement of the joint/pinion shaftserrations, then adjust the front toe by turningthe tie-rod ends, if necessary.

• Check the front toe inspection (see page 18-5).

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Exploded view

17-74

EPS Components

Rack End Removal and Installation

O-RING

TORQUE SENSOR3P CONNECTOR

6 x 1.0 mm9.8 N·m(1.0 kgf·m, 7.2 lbf·ft)

MOTOR

LOCKNUT

RACK GUIDE

DISC WASHER

O-RING

GEARBOX MOUNT CUSHION

GEARBOX HOUSING

MOUNT CUSHION

TIE-ROD CLIP

LOCKNUT14 x 1.5 mm44 N·m(4.5 kgf·m,33 lbf·ft)

BOOT

BOOT BANDRACK END93 N·m(9.5 kgf·m, 69 lbf·ft)

LOCK WASHER

RUBBER STOP

GROUNDTERMINAL

TORQUE SENSORASSEMBLY

8 x 1.25 mm20 N·m(2.0 kgf·m, 14 lbf·ft)

RACK GUIDE SCREW

SPRING

Replace.

If the motor is faulty,replace it.

Replace.




Replace.

Inspect for faultymovement and damage.

Replace.

Replace.

If the torque sensoris damaged or faulty,replace the gearboxas an assembly.

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０３

０４

Removal

17-75

A

B

A

A

BC

NOTE: Do not allow dust, dirt, or other foreign materialsto enter the steering gearbox.

1. Remove the boot bands (A) and discard them.Remove the tie-rod clips (B), and pull the bootsaway from the ends of the gearbox.

2. Unbend the lock washer (A).

3. Unscrew both rack ends (A) with a wrench. Becareful not to damage the rack shaft surface withthe wrench. Remove the rack end, lock washer (B)and rubber stop (C) and discard them.

NOTE: Hold the flat surfaces of the rack shaft on thepinion shaft side with another wrench.

(cont’d)

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０６

０７

０８

Installation

17-76

EPS Components

Rack End Removal and Installation (cont’d)

E93 N·m(9.5 kgf·m,69 lbf·ft)

BA D

C

A

B

A

B

(P/N 08798-9013)

A

B

C

D

1. Install the new rubber stop (A) and lock washer (B)on the rack shaft. Align the lock washer tabs (C)with the slots (D) in the rack shaft. Install the rackend (E) while holding the lock washer in place.Repeat this step for the other side of the rack shaft.

2. Tighten both rack ends. Be careful not to damagethe rack shaft surface with the wrench.

3. Bend the lock washer (A) back against the flat spots(B) on the rack end ball joint housing.

4. Apply multipurpose grease to the circumference ofthe rack end joint housing (A) and lock washer.

5. Apply a light coat of silicone grease (P/N08798-9013) to the boot fitting grooves (B) on therack ends.

6. Center the steering rack within its stroke.

7. Clean off any grease or contamination from theboot installation grooves (A) around the gearboxhousing. Install the boots (B) on the rack ends withthe tie-rod clips (C), and fit the boot end in theinstallation grooves in the housing properly.

8. After installing the boots, wipe the grease off thethread section (D) of the rack end.

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１０

17-77

A

B

C

B

A

4 mm(0.16 in.)

9. Install the new boot bands by aligning the tabs (A)with the holes (B) of the band.

10. Close the ear portion (A) of the band (B) withcommercially available pincers, Oetiker 1098 orequivalent (C).

11. Slide the rack shaft right and left to be certain thatthe boots are not deformed or twisted.

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17-78

EPS Components

Rack Guide Removal/Installation

AB

C

D

EF

NOTE: During removal/installation, do not allow dust,dirt, or other foreign materials to enter the steeringgearbox.


2. Loosen the locknut (A), then remove the rack guidescrew (B), spring (C), disc washer (D), and rackguide (E).

3. Replace the O-ring (F) from the rack guide. Wipethe grease off the sliding surface of the rack guide.

4. Apply multipurpose grease to the new O-ring, theninstall it to the rack guide.

5. Apply multipurpose grease to the sliding surfaceand the circumference of the rack guide, and installit onto the gearbox housing. Wipe the grease offthe threaded section of the housing.

6. Apply multipurpose grease to both ends of thespring and install it onto the gearbox housing.

7. Install the disc washer with its convex side facingthe rack guide.

8. Remove the old sealant from the rack guide screwand apply new sealant (Three Bond 1215 or Loctite5699) to the middle of the threads. Loosely installthe rack guide screw on the steering gearbox.

9. Loosely install the locknut.

10. Adjust the rack guide screw (see page 17-14).After adjusting, check that the rack movessmoothly by sliding the rack right and left.

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ＳＮＣ７Ａ００Ｆ１８１０００２５１２１ＫＤＡＴ００

17-79

EPS Control Unit Removal/Installation

A

B

C

D

E6 x 1.0 mm9.8 N·m(1.0 kgf·m,7.2 lbf·ft)

F



3. Remove the passenger’s dashboard undercover(see page 20-89).

4. Remove the passenger’s kick panel (see page20-54).

5. Disconnect EPS control unit connector A (2P),connector B (2P), connector C (2P), and connector D(28P).

6. Remove the nuts (E) from the EPS control unit (F).

7. Remove the EPS control unit.

8. Install the EPS control unit in the reverse order ofremoval.

9. Reconnect the negative cable to the battery and dothe following items:



• Set the clock.• If the EPS control unit is replaced, the EPS control

unit must memorize the torque sensor neutralposition (see page 17-20).

10. After installation, start the engine, and let it idle.Turn the steering wheel from lock-to-lock severaltimes. Check that the EPS indicator does not comeon.

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17-80

EPS Components

Tie-rod Ball Joint Boot Replacement

C

D

D

A

B

E

A

B

07JAF-SH20330

Bushing base 07JAF-SH20330

1. Remove the boot from the tie-rod end, and wipe theold grease off the ball pin.

2. Pack the lower area of the ball pin (A) with freshmultipurpose grease.

3. Pack the interior of the new boot (B) and lip (C) withfresh multipurpose grease.

Note these items when installing new grease:• Keep grease off the boot mounting area (D) and

the tapered section (E) of the ball pin.• Do not allow dust, dirt, or other foreign materials

to enter the boot.

4. Install the new boot (A) using the bushing base.The boot must not have a gap at the bootinstallation sections (B). After installing the boot,check the ball pin tapered section for greasecontamination, and wipe it if necessary.

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０３

ＳＮＣ７Ａ００Ｆ１８１０００５７１１８ＫＢＡＴ００

17-81

Gearbox Mount Cushion Replacement

A

B

C

D

E

A

B

A

A


2. Position the 34 mm socket wrench (A) on the flangepart of the gearbox housing with a washer (B),10 x 105 mm flange bolt (C), and a 10 mm nut (D) asshown.

3. Hold the 10 mm nut with a wrench, and tighten the10 x 105 mm flange bolt with another wrench.Remove the gearbox mount cushion (E).

4. Apply a mild soap and water solution to the newgearbox mount cushion surface (A), then place themount cushion on the gearbox mounting cushionhole.

5. Using a flat-tipped screwdriver, push the edge ofthe mount cushion (B) until it is about 1/3 of theway into the gearbox housing.

NOTE: Be careful not to damage the surface of themount cusion when pushing it with the flat-tippedscrewdriver.

6. Position the 34 mm socket wrench on the flangepart of the gearbox housing with a washer, flangebolt, and the nut as shown.

7. Install the gearbox mount cushion by tightening thenut until the mount cushion edges (A) properly fiton the gearbox flange surface.

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ＳＮＣ７Ａ０００００００００Ｊ１７０２ＺＡＡＴ００

06/09/19 11:31:36 61SNC010_170_0083

Civic Direccion Asistida

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