horn ACURA RL KA9 1996 Service Repair Manual

Cavity Wire
Test condition

Test: Desired result
Possible cause if result is not obtained

6

5

4

2

3

1

7
YEL/BLK

YEL

PNK/BLU

GRN

RED/WHT

BLK

WHT
Jump to ground

Ignition switch ON (II)

Jump to ground

Jump to ground

Jump to ground

Under all conditions

Under all conditions
The horn should sound.

Check for voltage to ground:

There should be battery voltage.

The trunk should open.

The doors should unlock.

If all doors are closed, the doors

should lock.

Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.
• Blown No. 44 (20 A) fuse in the

under-hood fuse/relay box

• Faulty multiplex control unit

(passenger's)

• Faulty horn

• An open in the wire

• Blown No. 13 (7.5 A) fuse in the

under-dash fuse/relay box

• An open in the wire

• Blown No. 44 (20 A) fuse in the

under-hood fuse/relay box

• Faulty multiplex control unit

(passenger's)

• Faulty trunk lid opener

• An open in the wire

• Blown No. 44 (20 A) fuse in the

under-hood fuse/relay box

• Faulty multiplex control unit

(passenger's)

• An open in the wire

• Blown No. 44 (20 A) fuse in the

under-hood fuse/relay box

• Faulty multiplex control unit

(passenger's)

• An open in the wire

• Poor ground (G602)

• An open in the wire

• Blown No. 44, (20 A) fuse in the

under-hood fuse/relay box

• An open in the wireProCarManuals.com

Description

Basic operation:

1. OnStar system is activated.

2. Data is transmitted to service provider.

GPS SATELLITES

Two-way cellular communication

with call center.

Dispatch

Rescue/Police

911 CALL

CENTER

3. Call center associate makes appropriate response:

— Accident/Emergency notification (Police, Fire and EMS, etc.)

— Airbag deployment (Accident)

— Roadside assistance

— Stolen vehicle tracking

— Remote door lock/unlock command

— Misplaced vehicle (Flashes parking lights/honks horn)

— Route guidance

— Ride Assist

— Concierge services/convenience

Buttons and indicator:

DOT BUTTON
ONSTAR INDICATOR

Solid Green Light: System OK

Flashing Green Light: Call in

progress

Solid Red Light: System

malfunction

Flashing Red Light: Call

in progress, but malfunction

in system exist.

ONSTAR BUTTON
EMERGENCY BUTTON

Activation and termination

of voice recognition

(VR) for virtual advisor and cellular phone.
Used to connect to call

center (voice based information

service).
Used for emergencies.

Emergency calls have priority

over all others.
ONSTAR CALL

CENTER

(Human Advisor)
Requests for

dispatchProCarManuals.com

OnStar System ('02 Model USA)

OnStar Control Unit Input Test (cont'd)

Disconnect the connectors from the unit

Cavity Wire Test condition
Test: Desired result
Possible cause if result is not obtained

B17

B22

A32

B6

B3

B2

B9

B18

B32
WHT/YEL

WHT

BLK

ORN

RED/GRN

BLK
Under all conditions

Ignition switch in ACC

(I)

Under all conditions

Under all conditions

Under all conditions

Under all conditions
Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for continuity to ground:

There should be continuity.

Connect to ground:

All horns should sound.

Connect to ground:

The taillights should come on.

Check for continuity to ground:

There should be continuity.
• Blown No. 56 (7.5 A) fuse in the

under-hood fuse/relay box

• An open in the wire

• Blown No. 4 (10 A) fuse in the

under-dash fuse/relay box

• An open in the wire

• Poor ground (G601)

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Either horn faulty

• Poor ground (G201)

• An open in the wire

• Blown No. 1 (15 A) fuse in the

under-dash fuse/relay box

• Faulty taillight relay

• Faulty taillight system

• An open in the wire

• An open in the wire

Reconnect the connectors to the unit

Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained

B20

B5

A8

A25

A10

A11

A23

A24
GRN/WHT

GRN/RED

GRY

BRN/YEL

WHT

BLU/RED

BLK

WHT
Front passenger's door

lock key cylinder in neu-

tral position

Front passenger's door

lock key cylinder in

locked position

Front passenger's door

lock key cylinder in neu-

tral position

Front passenger's door

lock key cylinder in

unlocked position

Under all conditions

Under all conditions

OnStar "DOT" button

pushed and human

advisor voice comes

on.

OnStar "DOT" button

pushed and human

advisor voice comes

on.

Under all conditions

Ignition switch in ACC

(I). OnStar "DOT" but-

ton pushed. Speak into

the microphone.
Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be less than 1 V.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be less than 1 V.

Check for continuity to ground:

There should be continuity.

Check for continuity to ground:

There should be continuity.

Check for voltage between the A10

terminal and audio unit C9 or B2

terminal:

There should be 1 V or less.

Check for voltage between the A11

terminal and audio unit C8 or B3

terminal:

There should be 1 V or less.

Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be about 4 V.
• Faulty front passenger's door lock

key cylinder switch

• Poor ground (G401, G402)

• An open in the wire

• Short to ground (if you don't have

5 V when you should)

• An open in the wire

• An open in the wire

• Faulty audio unit

• Faulty speaker

• An open in the wire

• Faulty audio unit

• Faulty speaker

• An open in the wire

• Faulty OnStar buttons and microphone

• An open in the wire

• Faulty OnStar buttons and micro-

phone

• An open in the wireProCarManuals.com

Cruise Control

Control Unit Input Test (cont'd)

Cavity Wire
Test condition
Test: Desired result

Possible cause if result is not obtained

3

13

7

6

14

12

2

5

10

9

11

1
BLK

LT GRN

LT GRN/BLK

LT GRN/RED

PNK

BLU/WHT

GRY

GRN/WHT

BLU/YEL

BRN

BRN/BLK

BRN/WHT
Under all conditions

Ignition switch ON (II) and

main switch ON

Resume button pushed

Cancel button pushed

Set button pushed

Cancel button pushed

Shift lever in , or

Ignition switch ON (II), and

main switch ON; raise the

front of the vehicle, and rotate

one wheel slowly while

holding the other wheel.

Ignition switch ON (II), main

switch ON; brake pedal

pressed, then released

Brake pedal pressed then

released

Ignition switch ON (II)

Under all conditions

Under all conditions

Under all conditions
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 7, there

should be no voltage on terminal No. 6.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 7, there

should be voltage on terminal No. 6.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 6, there

should be no voltage on terminal No. 7.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 6, there

should be voltage on terminal No. 7.

Check for continuity to ground:

There should be continuity.

NOTE: There should be no continuity

when the shift lever is in other positions.

Check for voltage between the

BLU/ WHT and BLK terminals:

There should be cycle 0 - 5 V or

battery voltage.

Check for voltage to ground:

There should be 0 V with the pedal

pressed, and battery voltage with

the pedal released.

Check for voltage to ground:

There should be battery voltage with

the pedal pressed, and 0 V with the

pedal released.

Attach to ground:

The cruise light in the gauge assembly

should come on.

Check for resistance to ground:

There should be 80 -120

Check for resistance to ground:

There should be 70 -110

Check for resistance to ground:

There should be 40 - 60
• Poor ground (G401, G402)

• An open in the wire

• Blown No. 20 (20 A) fuse in the

under-dash fuse/relay box

• Faulty main switch

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Short between LT GRN/BLK and

LT GRN/RED wires

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Short between LT GRN/BLK and

LT GRN/RED wires

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Faulty A/T gear position switch

• Poor ground (G401, G402)

• An open in the wire

• Faulty vehicle speed sensor (VSS)

• An open in the wire

• Short to ground

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty brake switch

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty brake switch

• An open in the wire

• Blown bulb

• Faulty gauge circuit

• An open in the wire

• Faulty actuator solenoid

• An open in the wireProCarManuals.com

3. Connec t th e cruis e contro l switche s connector , th e
radi o remot e switc h connector , an d th e hor n con -
nector .
4 . Instal l th e driver' s airba g assembly , an d confir m
prope r syste m operatio n (se e sectio n 24 ).
5 . Chec k th e horn , th e cruis e contro l switche s an d th e
radi o remot e switc h fo r prope r operation .
3
. Remov e th e steerin g whee l nut .
4 . Remov e th e steerin g whee l wit h a steerin g whee l
puller .
CAUTION :
• D o no t ta p o n th e steerin g whee l o r th e steerin g
colum n shaf t whe n removin g th e steerin g wheel .
• I f yo u threa d th e pulle r bolt s int o th e whee l hu b
mor e tha n fiv e threads , th e bolt s wil l hi t th e
steerin g whee l lowe r cove r an d damag e it . T o
preven t this , instal l a pai r o f ja m nut s fiv e
thread s u p o n eac h pulle r bolt . 2
. Instal l th e steerin g whee l wit h th e steerin g whee l
nut.
NOTE : B e sur e th e steerin g whee l shaf t engage s
wit h th e cabl e ree l an d cancelin g sleeve .
Remova l
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S (sectio n 24 ) befor e performin g repair s o r ser -
vice .
NOTE : Befor e removin g th e steerin g wheel , alig n th e
fron t wheel s straigh t ahead .
1 . Remov e th e driver' s airba g assembl y fro m th e steer -
in g whee l (se e sectio n 24 ).
2 . Disconnec t th e hor n connector , cruis e contro l
switche s connecto r an d radi o remot e switc h connec -
tor.
Installatio n
CAUTION : D o no t ta p o n th e steerin g whee l o r steerin g
colum n shaf t whe n installin g th e steerin g wheel .
NOTE : Befor e installin g th e steerin g wheel , alig n th e
fron t wheel s straigh t ahead .
1 . Befor e installin g th e steerin g wheel , cente r th e
cabl e reel . D o thi s b y firs t rotatin g th e cabl e ree l
clockwis e unti l i t stops . The n rotat e i t counterclock -
wis e abou t tw o turns . Th e arro w mar k o n th e cabl e
ree l labe l shoul d poin t straigh t up .
Steerin g Whee l
ProCarManuals.com

Disassembly/Reassembly
'96 - 9 8 models :
HORN SWITC H
Test , se e sectio n 2 3
CRUISE CONTRO L
SET/RESUME/CANCE L
SWITC H
Test , se e sectio n 2 3
RADI
O REMOT E SWITC H
Test , se e sectio n 2 3
RADI O REMOT E SWITC H
Test , se e sectio n 2 3
CRUIS E CONTRO L
SET/RESUME/CANCE LSWITCH
Test , se e sectio n 2 3
ProCarManuals.com

Component Locations

ABS CONTROL UNIT

MODULATOR UNIT
SERVICE CHECK CONNECTOR (2P)

ABS INSPECTION CONNECTOR (6P)

RIGHT-REAR WHEEL SENSOR

RIGHT-FRONT WHEEL

SENSOR CONNECTOR

RIGHT-FRONT

WHEEL SENSOR
LEFT-REAR WHEEL

SENSOR CONNECTOR

LEFT-REAR

WHEEL SENSOR

RIGHT-REAR WHEEL

SENSOR CONNECTOR

UNDER-HOOD

RELAY BOX B

UNDER-HOOD

FUSE/RELAY BOX
UNDER-DASH FUSE/RELAY BOX

LEFT-FRONT WHEEL SENSOR

LEFT-FRONT WHEEL

SENSOR CONNECTOR

GAUGE ASSEMBLY:

ABS INDICATOR LIGHT

UNDER-DASH FUSE/RELAY BOX:

METER

(7.5 A) FUSE
ABS B2

(15 A) FUSE

ABS B1

(20 A) FUSE

METER

(15 A) FUSE
BATTERY

(120 A) FUSE

ABS MOTOR (40 A) FUSE

IG SW (50 A) FUSE

UNDER-HOOD RELAY BOX C:

REAR FAIL-SAFE RELAY

METER RELAY

FRONT FAIL-SAFE RELAY
ABS
UNIT

(7.5 A) FUSE
STOP/HORN

(ISA) FUSE
ABS PUMP

MOTOR RELAY
UNDER-HOOD FUSE/RELAY BOX:

ECU

(20 A) FUSE

R/C MIRROR

(7.5 A) FUSEProCarManuals.com

Component Locations

SERVICE CHECK CONNECTOR (2P)

RIGHT-REAR WHEEL SENSOR

ABS CONTROL UNIT

MODULATOR UNIT

LEFT-REAR

WHEEL SENSOR

RIGHT-FRONT

WHEEL SENSOR

UNDER-HOOD RELAY BOX C
UNDER-DASH FUSE/RELAY BOX

LEFT-FRONT WHEEL SENSOR

GAUGE ASSEMBLY
UNDER-HOOD FUSE/RELAY BOX

ABS INDICATOR

UNDER-DASH FUSE/RELAY BOX

R/C MIRROR

(7.5 A) FUSE

METER

(7.5 A) FUSE
STOP/HORN

(15 A) FUSE

ABS
UNIT

(7.5 A) FUSE

ABS

(20 A) FUSE
ABS PUMP

MOTOR RELAY

METER

(15 A) FUSE
BATTERY

(120 A) FUSE

ABS MOTOR

(40 A) FUSE

IG SW (50 A) FUSE

UNDER-HOOD RELAY BOX C

GAUGE RELAY

FAIL-SAFE RELAY
UNDER-HOOD FUSE/RELAY BOXProCarManuals.com

Component Locations

SERVICE CHECK CONNECTOR (2P)

ABS CONTROL UNIT

ECT SENSOR

TCS CONTROL VALVE

SENSOR

RIGHT-FRONT

WHEEL SENSOR

TCS CONTROL

VALVE ACTUATOR
LEFT-REAR

WHEEL SENSOR

GAUGE ASSEMBLY

ECU (PCM) (20 A) FUSE

UNDER-HOOD FUSE/RELAY BOX

BATTERY (120 A) FUSE
UNDER-HOOD RELAY BOX C

FAIL-SAFE RELAY

IG SW (50 A) FUSE

METER (15 A) FUSE
METER RELAY
TCS (15 A) FUSE
STOP/HORN

'96 - 98 models: (15 A) FUSE

'99 model: (20 A) FUSE
UNDER-HOOD FUSE/RELAY BOX
UNDER-HOOD RELAY BOX C

LEFT-FRONT WHEEL SENSOR
POWERTRAIN

CONTROL MODULE (PCM)
STEERING ANGLE SENSOR

RIGHT-REAR WHEEL SENSOR

TCS CONTROL UNIT

TCS/CRUISE SWITCH

UNDER-DASH FUSE/RELAY BOX

UNDER-DASH FUSE/RELAY BOX

METER (7.5 A) FUSE

TCS INDICATOR LIGHTProCarManuals.com

Component Locations

SERVICE CHECK CONNECTOR (2P)

RIGHT-REAR WHEEL SENSOR

VSA CONVERTER UNIT

VSA MODULATOR

CONTROL UNIT

TCS CONTROL

VALVE SENSOR

RIGHT-FRONT

WHEEL SENSOR
PRECHARGE

PUMP MOTOR
STEERING

ANGLE SENSOR

YAW RATE/LATERAL

ACCELERATION SENSOR

TCS CONTROL VALVE

ACTUATOR

UNDER-HOOD

RELAY BOX C
UNDER-HOOD

FUSE/RELAY BOX
VSA OFF SWITCH

UNDER-DASH FUSE/RELAY BOX

LEFT-FRONT WHEEL SENSOR
LEFT-REAR

WHEEL SENSOR

GAUGE ASSEMBLY

ABS INDICATOR

VSA SYSTEM INDICATOR
UNDER-HOOD FUSE/RELAY BOX

STOP/HORN

(20 A) FUSE

BRAKE SYSTEM INDICATOR

VSA ACTIVATION INDICATOR

UNDER-DASH FUSE/RELAY BOX
TCS

(15 A) FUSE

VSA

(20 A) FUSE

METER

(15 A) FUSE

ECU

(20 A) FUSE

METER

(7.5 A) FUSE
BATTERY

(120 A) FUSE

VSA MOTOR (40 A) FUSE

IG SW (50 A) FUSE

UNDER-HOOD RELAY BOX C

FAIL-SAFE RELAY

GAUGE RELAY
PCM

R/C MIRROR

(7.5 A) FUSEProCarManuals.com