1996 ACURA RL KA9 Service Repair Manual

OnStar Control Unit Input Test

1. Remove the rear seat (Refer to the '96 - '01 3.5RL Service Manual, P/N 61SZ305, for the items not shown in this sec-

tion).

2. Disconnect the 32P connectors from the OnStar control unit.

3. Inspect the connector and socket terminals to be sure they are all making good contact.

• If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.

• If the terminals look OK, make the following input tests at the connector.

— If any test indicates a problem, find and correct the cause, then recheck the system.

— If all the input tests prove OK, the control unit must be faulty; replace it.

32P CONNECTOR A (red):

Wire side of female

terminals

32P CONNECTOR B (blue):

Wire side of female terminalsProCarManuals.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