SWB a6 m18b Final
-
Upload
harshal161987 -
Category
Documents
-
view
231 -
download
0
Transcript of SWB a6 m18b Final
-
7/29/2019 SWB a6 m18b Final
1/16
ASE 6 - Electrical
Module 18B
Horn Systems
-
7/29/2019 SWB a6 m18b Final
2/16
Acknowledgements
General Motors, the IAGMASEP Association Board of Directors, and Raytheon Professional
Services, GM's training partner for GM's Service Technical College wish to thank all of the people
who contributed to the GM ASEP/BSEP curriculum development project 2002-3. This project
would not have been possible without the tireless efforts of many people. We acknowledge:
The IAGMASEP Association members for agreeing to tackle this large project to create
the curriculum for the GM ASEP/BSEP schools.
The IAGMASEP Curriculum team for leading the members to a single vision and
implementation.
Direct contributors within Raytheon Professional Services for their support of translating a
good idea into reality. Specifically, we thank:
Chris Mason and Vince Williams, for their leadership, guidance, and support. Media and Graphics department under Mary McClain and in particular, Cheryl
Squicciarini, Diana Pajewski, Lesley McCowey, Jeremy Pawelek, & Nancy DeSantis.
For his help on the Electrical curriculum volume, Subject Matter Expert, Ken Beish, Jr.,
for his wealth of knowledge.
Finally, we wish to recognize the individual instructors and staffs of the GM ASEP/BSEP Colleges
for their contribution for reformatting existing General Motors training material, adding critical
technical content and the sharing of their expertise in the GM product. Separate committeesworked on each of the eight curriculum areas. For the work on this volume, we thank the members
of the Electrical committee:
Jack Davis, Community College of Baltimore County - Catonsville
Jim Halderman, Sinclair Community College
Megan Kuehm, Community College of Allegheny County
Frank Longbottom, Camden County College
Jeff Rehkopf, Florida Community College at Jacksonville
Randy Peters, Des Moines Area Community College
David Rodriguez, College of Southern Idaho
Ed Schauffler, Longview Community College
Vince Williams, Raytheon
-
7/29/2019 SWB a6 m18b Final
3/16
Contents
Module 18B Horn Systems
Acknowledgements .........................................................................................2Introduction ...................................................................................................... 4
Objectives ........................................................................................................4
Horn System Description and Operation 2004 Cavalier ................................................... 6
Cavalier 2004 Horn .......................................................................................................... 7
Cavalier 2003 Behind Left Side of Instrument Panel ...................................................... 8
Horn Circuit ..................................................................................................................... 9
Horns System Description and Operation 2004 Cadillac................................................ 10
Circuit Operation ........................................................................................................... 11
Horns Component View ................................................................................................. 12
-
7/29/2019 SWB a6 m18b Final
4/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-4
Student WorkbooIntroduction
Objectives
NATEF Area VI. A.
1. Identify and interpret electrical/electronic system concern; determine
necessary action.2. Research all applicable vehicle and service information, such as
electrical/electronic system operation, vehicle service history, service
precautions, and technical service bulletins.
3. Locate and interpret vehicle and major component identification
numbers (VIN, vehicle certification labels, and calibration decals).
4. Diagnose electrical/electronic integrity for series, parallel and series-
parallel circuits using principles of electricity (Ohms Law).
5. Use wiring diagrams during diagnosis of electrical circuit problems.
6. Demonstrate the proper use of a digital multimeter (DMM) duringdiagnosis of electrical circuit problems.
7. Check electrical circuits with a test light; determine necessary action.
8. Measure source voltage and perform voltage drop tests in electrical/
electronic circuits using a voltmeter; determine necessary action.
9. Measure current flow in electrical/electronic circuits and components
using an ammeter; determine necessary action.
10.Check continuity and measure resistance in electrical/electronic
circuits and components using an ohmmeter; determine necessary
action.
11. Check electrical circuits using fused jumper wires; determine
necessary action.
12.Locate shorts, grounds, opens, and resistance problems in electrical/
electronic circuits; determine necessary action.
13.Measure and diagnose the cause(s) of excessive key-off battery drain
(parasitic draw); determine necessary action.
14.Inspect and test fusible links, circuit breakers, and fuses; determine
necessary action.
15.Inspect and test switches, connectors, relays, solid state devices, and
wires of electrical/electronic circuits; perform necessary action.
16.Repair wiring harnesses and connectors.
17.Perform solder repair of electrical wiring.
18.Diagnose incorrect wiper operation; diagnose wiper speed control and
park problems; perform necessary action. P-2
19.Diagnose incorrect washer operation; perform necessary action. P-2
-
7/29/2019 SWB a6 m18b Final
5/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-5
Student WorkbooSTC Tasks:
Identify causes of faults in automotive circuits
Select test procedures for locating faults in automotive circuits
Interpret the readings of a DMM display
-
7/29/2019 SWB a6 m18b Final
6/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-6
Student WorkbooHorn System Description and Operation 2004 Cavalier
System Description
The horn system consists of the following components:
HORN fuse
Horn relay
Horn slip ring
Horn
Body Control Module (BCM.)
System Operation
The vehicle horn is activated under the following conditions:
The horn switch is depressed.
The body control module (BCM) commands the horn on, if equipped withkeyless entry (AU0). The BCM commands the horn on under any of the
following conditions:
When the content theft deterrent system detects a vehicle intrusion. For
further information refer to Content Theft Deterrent (CTD) Description and
Operation in Theft Deterrent.
When the panic button is depressed on the remote control door lock
transmitter. For further information refer to Keyless Entry System
Description and Operation in Keyless Entry.
When the keyless entry system is used to lock the vehicle, a horn chirp
may sound to notify the driver that the vehicle has been locked. The
notification feature may be enabled or disabled through personalization.
For further information refer to Keyless Entry System Description and
Operation in Keyless Entry.
Circuit Operation
Battery positive voltage is applied at all times to the horn relay coil and the
horn relay switch. Pressing the horn switch applies ground to the horn relay
control circuit. The BCM may also apply ground to the horn relay control
circuit as described above. When the horn relay control circuit is grounded,the horn relay is energized and battery positive voltage is applied to the horn
through the horn control circuit. The horn sounds as long as ground is applied
to the horn relay control circuit.
-
7/29/2019 SWB a6 m18b Final
7/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-7
Student WorkbooCavalier 2004 Horn
(1) Front Impact Bar
(2) Horn
Figure 18B-1, Cavailer 2004 Horn
-
7/29/2019 SWB a6 m18b Final
8/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-8
Student WorkbooCavalier 2003 Behind Left Side of Instrument Panel
(1) Body Control Module (BCM)
(2) BCM Connectors
(3) G204(4) G201
(5) Fuse Block I/P
(6) Horn Relay
Figure 18B-2, Behind Left Side Instrument Panel Cavalier 2003
-
7/29/2019 SWB a6 m18b Final
9/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-9
Student Workboo
Figure 18B-3, Horn Circuit Early Production
Horn Circuit
-
7/29/2019 SWB a6 m18b Final
10/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-10
Student WorkbooHorns System Description and Operation 2004 Cadillac
System Description
The horn system consists of the following components:
The HORN fuse
The HORN SWITCH fuse
The Horn relay
The inflatable restraint steering wheel coil
The horn switch
The horns
The dash integration module (DIM)
System Operation
The vehicle horns are activated under the following conditions:
The horn switch is depressed.
The dash integration module commands the horns on. The DIM
commands the horns on under any of the following conditions:
When the content theft deterrent system detects a vehicle intrusion.
For further information refer to Content Theft Deterrent (CTD)
Description and Operation in Theft Deterrent.
When the keyless entry system is used to lock the vehicle, a horn chirp
may sound to notify the driver that the vehicle has been locked. The
notification feature may be enabled or disabled through
personalization. For further information refer to Keyless Entry System
Description and Operation in Keyless Entry.
When the panic button is depressed on the remote control door lock
transmitter. For further information refer to Content Theft Deterrent
(CTD) Description and Operation in Theft Deterrent.
When the OnStar system is used to sound the horn. For further
information refer to OnStar Description and Operation in Cellular
Communications.
-
7/29/2019 SWB a6 m18b Final
11/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-11
Student WorkbooCircuit Operation
Battery positive voltage is applied at all times to the horn relay coil and the
horn relay switch. Pressing the horn switch applies ground to the horn relay
control circuit. The DIM may also apply ground to the horn relay control circuit
as described above. When the horn relay control circuit is grounded, the horn
relay is energized and battery positive voltage is applied to the horns through
the horn control circuit. The horns sound as long as ground is applied to thehorn relay control circuit.
Figure 18B-4, Circuit Operation
-
7/29/2019 SWB a6 m18b Final
12/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-12
Student WorkbooHorns Component View
Figure 18B-5, Horns Component
-
7/29/2019 SWB a6 m18b Final
13/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-13
Student Workboo
CustomerNam
e
Date
VehicleNumber
A
6Electrical
StreetAddress
Tec
hnicianName
Module18Horns
CityandZip
Tec
hnicianName
W
orkstation#1
HomePhone
WorkPhone
Year/Make/Model
Tec
hnicianName
2003ChevroletCavalier
VehicleIdentif
icationNumber
Mileage
Engine
License
Color
Tec
hnicianName
Descriptions/Instructions
Complain
t:HornInoperative(RecordallanswerstothesequestionsonPag
e34)
UseSIto
provideinformationtodiagnoseconcern
Useappropriatetestequipmenttoinclude
multimeter,TechII,15ampFused
jumperwire,andtestlight.
1.ReadCircuitDescriptionandOperation
andrecordthedocumentID#
2.Review
wiringschematicsandrecordth
edocumentID#
3.Review
theDiagnosisChartsandchoos
ethecorrectcharttobeginyourdiagnosis.RecordthedocumentID#
4.WhatisthefirststepintheDiagnosisprocess?
5.Demonstratetoyourinstructorthestep
stakentodeterminethecauseof
thesymptom.
6.Summ
arizetheentireprocessanddesc
ribewhatyoulearned.
-
7/29/2019 SWB a6 m18b Final
14/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-14
Student Workboo
COMPONENTLOCATION
SERVICE
INFORMATIONDOCUMENT#S
Horn
HornRelay
HornFuse
G102
S103
TECH2DATA/DTC
SPECIALFUNCTIONS
SPECIALTOOLS
TESTPROCEDURES
Multimeter,TestLight,TechII
WHATISTHEROOTCAUSE?
INSTRUCTOR
INITIALS
-
7/29/2019 SWB a6 m18b Final
15/16
2002 General Motors Corporation
All Rights Reserved
ASE 6 - Electrica
Module 18B - H
Systems
18B-15
Student Workboo
Recordall
answerstotheQuestionsonPag
e1here.
1.
2.
3.
4.
5.
-
7/29/2019 SWB a6 m18b Final
16/16
2002 General Motors Corporation
ASE 6 - Electrica
Module 18B - H
Systems
18B-16
Student Workboo