ELECTRICAL—VEHICLE SYSTEMS GROUND Article No.LOCATIONS—INTERMITTENT FAULT DIAGNOSTIC 02-12-2TIPS

LINCOLN: 2000-2002 LS

Article 00-25-7 is being republished in its entirety toGROUND LOCATIONS AND DESCRIPTIONupdate the model year coverage.

Refer to Figure 1 for Vehicle Ground LocationISSUEoverview.

The Lincoln LS electrical system is of a multiplexdesign. Multiplexed electrical systems rely very NOTEheavily on the integrity of the component and circuit TO PROPERLY INSPECT A GROUND, FIRSTgrounds to function correctly. Intermittent electrical COMPLETELY REMOVE THE FASTENERfaults may be caused by a poor ground. RETAINING THE GROUND TO THE VEHICLE.

INSPECT EACH INDIVIDUAL GROUND EYELETACTION FOR DAMAGE TO THE TERMINAL AND WIRE.When diagnosing any intermittent electrical faults, REPAIR DAMAGE AS NEEDED TO RESTOREthe grounds for the affected system or component THE CONDUCTIVITY OF THE GROUND.should be inspected for proper connection and THROUGHLY CLEAN, REASSEMBLE ANDintegrity. Poor or high resistance grounds can affect TORQUE THE GROUND FASTENER TO THEthe operation of modules, relays and other RECOMMENDED VALUE FOUND IN THEcomponents, but may not generate trouble codes. APPROPRIATE WORKSHOP MANUAL.Refer to the following Ground Location Chart forground locations and descriptions of whichcomponents/systems are on each specified ground.

Copyright © 2002 Ford Motor Company PAGE 1

Article No. 02-12-2 Cont’d.

GROUND LOCATION TABLE

Ground Location Systems Grounded At This Location

G100 - Located behind the LH headlamp housing (Figure Brake fluid level switch2)

Windshield wiper motorHood ajar switchLH driving lampThermactor air pump relay (V6 only)Horn

G101 - Located behind the RH headlamp housing (Figure Air conditioning clutch3)

Powertrain Control Module (PCM) relayWasher reservoir level switchTraction Control System or Interactive VehicleDynamics (Advance Trac) moduleIgnition coil on plug relayAuxiliary coolant pump (V8 only)RH driving lampWiper motor

G102 - Located in the RH front wheelwell. Note: The Crankshaft position sensorwheelwell plastic liner must be removed to access G102(Figure 4)

Mass Air Flow (MAF) sensorPowertrain Control Module (PCM)

G103 - Located in the RH front wheelwell. Note: The Starter motor groundwheel well plastic liner must be removed to access G103(Figure 5)

G201 - Located in the instrument panel on the left radio Radiosupport bracket (Figure 6)

CD player (for in-glove compartment CD player)Tilt/Telescopic steering columnDual Automatic Temperature Control (DATC) modulePower mirror switchTrunk release switchGlove compartment lampPower front amplifier

G202 - LH A-pillar area, behind kick panel (Figure 7) Front Electronics Module (FEM)Anti-lock Brake System (ABS) test connector

G203 - LH A-pillar area, behind kick panel (Figure 7) Front Electronics Module (FEM) for the frontpassenger windowHeated wiper parkAuxiliary junction boxDriver’s Door Module (DDM)Driver door switchesDriver door latchPower mirror switchDeck lid release switchPassive Anti-Theft System (PATS)

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Article No. 02-12-2 Cont’d.

Ground Location Systems Grounded At This Location

G204 - RH A-pillar area, behind kick panel (Figure 8) Climate control blower motorPassenger door latchPassenger side heated mirrorDual Automatic Temperature Control (DATC) module

G300 - Located on the RH side of the rear package tray, Fuel pump relayunder the package tray trim cover. Note: The trim covermust be removed to access this ground (Figure 9)

Headliner lamps and switchesRH rear door latchRH rear window switchMoonroof motor/module (if equipped)Deck lid ajar switch

G301 - Located under the RH front seat, under the RH power seat control switchescarpeting (Figure 10)

RH heated seat module (if equipped)

G302 - Located under the LH front seat, under the Cigar lightercarpeting (Figure 11)

Traction Control System de-activation switchTransmission shift leverHeated seat switchesHeated seat moduleLH power seat switches

G324 - Located on the LH side of the rear package tray, Cellular Phone antennaunder the package tray trim cover. Note: The trim covermust be removed to access this ground (Figure 12)

G400 - LH rear trunk panel, under the plastic trim cover Subwoofer amplifier (if equipped)(Figure 13)

LH rear door latchLH rear power window switchCellular phone module (if equipped)Remote Emergency Satellite Cellular Unit (RESCU)module (if equipped)

G401 - RH rear trunk panel, under the plastic trim cover Rear Electronics Module (REM)(Figure 14)

Deck lid release solenoid

G403 - Near the battery inside the spare tire well (Figure This is the main battery ground for the vehicle15)

OTHER APPLICABLE ARTICLES: NONE OASIS CODES: 102000, 103000, 104000, 112000,SUPERSEDES: 00-25-7 201100, 201200, 202000, 203100,WARRANTY STATUS: INFORMATION ONLY 203200, 204100, 204200, 205000,

206000, 207000, 208000, 208300,303000, 501000, 502000, 504000,601300, 603300, 698298

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