key battery ACURA RL KA9 1996 Service Repair Manual

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

8. Afte r reconnectin g th e battery , ente r th e anti-thef t
cod e fo r th e radi o an d th e navigatio n system , the n
ente r th e customer' s radi o statio n presets .
SWITCH
LOCK CYLINDE R
Electrical Switc h Replacemen t
SRS component s ar e locate d i n thi s area . Review the
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
service .
NOTE: Th e PC M memor y mus t b e rese t afte r reconnectin g
th e batter y (se e sectio n 11 ).
1 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e radi o
an d th e navigatio n system , the n writ e dow n th e fre -
quencie s fo r th e radio' s prese t buttons .
2 . Disconnec t th e batter y negativ e cable .
3 . Remov e th e dashboar d lowe r cove r (se e sectio n 20 ).
4 . Disconnec t th e 7 P connecto r fro m th e under-das h
fuse/rela y box .
5 . Remov e th e steerin g colum n cover s (se e sectio n 17 ).
6 . Inser t th e ignitio n key , an d tur n it t o "0" .
7 . Remov e th e tw o screw s an d th e electrica l switc h
fro m th e steerin g lock .
ProCarManuals.com

Confirming the Function

1. Shifting to the sleep mode:

1) Turn the ignition switch OFF.

2) Cancel the key-off operation timer in power window system by opening and closing one of the front doors.

3) Make sure that the trunk is closed, and exterior lights are off.

4) If you do not operate the switches related to the multiplex control units more than one minute after meeting the

above conditions, the system function shifts to the sleep mode.

(All of the switches must be turned OFF except door lock knob switches, ignition key switch, audio switch, and hood

switch.)

2. Confirming the sleep mode:

1) Check for voltage between the wake up line (PNK/BLU wire between driver's and passenger's control unit).

There should be no voltage with the sleep mode OFF.

There should be battery voltage with the sleep mode ON.

2) Check for voltage between each communication line and body ground while shifting to the sleep mode. There

should be no voltage.

3) Check the parasitic draw at the battery while shifting to the sleep mode. The ampere should change from 100 mA to

less than 100 mA.

3. Confirming the wake up mode:

After confirming the sleep mode, turn the related switch (see previous table) ON, and wake up each control unit. If all of

the operations works properly, the wake up mode is OK.

(If any of the control units are faulty and cannot wake up, several parts of the system will not work at the same time.)
Multiplex Control SystemProCarManuals.com