Acura RL (1996-2004 year). Manual — part 245
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 wire
Main Menu
Table of Contents
Reconnect the connectors from the unit
Cavity Wire Test condition
Test: Desired result
Possible cause if result is not obtained
B21
B24
B25
B29
B7
B10
B11
B12
B13
A1
A18
A19
A7
A22
A3
A4
A21
A20
A6
A5
BLU
PUR
ORN
ORN
BLU
BLK
ORN
GRN
PUR
GRY
GRY
GRY
YEL
GRY
BRN
BRN
GRY
GRY
YEL
YEL
Ignition switch in ACC (I)
Ignition switch turned
OFF
It is made to move to the
malfunction mode of
onstar system
Ignition switch in ACC (I)
Under all conditions
Ignition switch in ACC (I)
Ignition switch in ACC (I)
OnStar "DOT" button
pushed
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Under all conditions
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Ignition switch in ACC (I)
OnStar "Emergency" but-
ton pushed
Check for voltage to ground:
There should be no voltage.
Check for voltage to ground:
There should be 10 V.
Check for voltage to ground:
There should be 4 V.
Check for voltage to ground:
There should be less than 1 V.
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be about 8 V.
Check for voltage to ground:
There should be about 8 V.
Check for voltage to ground:
There should be about 8 V.
Check for voltage to ground:
There should be about 8 V.
Check for voltage to ground:
"DOT" button pushed: 280 mV
"OnStar" button pushed: 1 V
"Emergency" button pushed: 1.7 V
Check for voltage to ground:
There should be about 10 V.
Check for voltage to ground:
There should be about 7 V.
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be about 0 V.
Check for voltage to ground:
There should be about 3.8 V.
Check for voltage to ground:
There should be about 6.6 V.
Check for voltage to ground:
There should be about 0 V.
Check for voltage to ground:
There should be 1 V or less.
Check for voltage to ground:
There should be 1 V or less.
Check for voltage to ground:
There should be about 3 V.
Check for voltage to ground:
There should be about 6 V.
• Faulty OnStar button system interface
unit
• An open in the wire
• Faulty OnStar button system interface
unit
• An open in the wire
• Faulty OnStar button system interface unit
• An open in the wire
• Faulty OnStar button system interface unit
• Poor ground (G401, G402)
• An open in the wire
• Faulty OnStar button system interface unit
• An open in the wire
• Faulty OnStar button system interface
unit
• An open in the wire
• Faulty OnStar button system interface unit
• An open in the wire
• Faulty OnStar button system interface unit
• An open in the wire
• Faulty OnStar button system interface
unit
• An open in the wire
• 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
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
• Faulty OnStar button and microphone
• An open in the wire
Main Menu
Table of Contents
OnStar System ('02 Model USA)
OnStar System Interface 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 12P connector from the OnStar system interface 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.
CONNECTOR B (16P)
Wire side of female
terminals
CONNECTOR A (12P)
Wire side of female
terminals
. ONSTAR SYSTEM INTERFACE UNIT
Main Menu
Table of Contents
Disconnect the connectors from the unit
Cavity Wire Test condition
Test: Desired result
Possible cause if result is not obtained
A1
A7
BLK
Under all conditions
Check for continuity to ground:
There should be continuity.
• An open in the wire
Reconnect the connectors from the unit
Cavity Wire Test condition
Test: Desired result
Possible cause if result is not obtained
B2
B3
B4
B5
A12
A3
A9
A6
A10
A8
A5
A2
A4
B13
B14
BLU/YEL
YEL/GRN
ORN
WHT/GRN
BLU
PUR
ORN
ORN
BLU
BLK
ORN
GRN
PUR
PNK
GRN
Ignition switch in ACC (I)
Ignition switch in ACC (I)
With the ignition switch
OFF, press and hold the
"DOT" button. Turn the
ignition switch from OFF
to ACC three times and
back to ACC, then release
the "DOT" button.
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Ignition switch turned
OFF
With the ignition switch
OFF, press and hold the
"DOT" button. Turn the
ignition switch from OFF
to ACC three times and
back to ACC, then release
the "DOT" button.
Ignition switch in ACC (I)
Under all conditions
Ignition switch in ACC (I)
Ignition switch in ACC (I)
OnStar "DOT" button
pushed
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Ignition switch in ACC (I)
Ignition switch in ACC (I) On-
Star "DOT" button pushed
Ignition switch in ACC (I)
Check for voltage to ground:
There should be approx 8V.
Check for voltage to ground:
"DOT" button pushed: 280mV
"OnStar" button pushed: 1V
"Emergency" button pushed: 1.7V
Check for voltage to ground:
There should be 4V.
Check for voltage to ground:
There should be about 8V.
Check for voltage to ground:
There should be no voltage.
Check for voltage to ground:
There should be 10V.
Check for voltage to ground:
There should be 4V.
Check for voltage to ground:
There should be less than 1V.
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be about 8V.
Check for voltage to ground:
There should be about 8V.
Check for voltage to ground:
There should be about 8V.
Check for voltage to ground:
There should be about 8V.
Check for voltage to ground:
"DOT" button pushed: 280mV
"OnStar" button pushed: 1V
"Emergency" button pushed: 1.7V
Check for voltage to ground:
There should be about 8V.
Check for voltage to ground:
There should be about 4V.
• Blown No. 56 (7.5 A) fuse in the
under-hood fuse/relay box
• An open in the wire
• Faulty OnStar button
• An open in the wire
• Faulty OnStar button
• An open in the wire
• Faulty OnStar button
• An open in the wire
• An open in the wire
• An open in the wire
• An open in the wire
• Poor ground (G401, G402)
• An open in the wire
• An open in the wire
• An open in the wire
• An open in the wire
• An open in the wire
• An open in the wire
• Faulty audio unit
• An open in the wire
• Faulty SRS unit
• An open in the wire
Main Menu
Table of Contents
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