Acura RL (1996-2004 year). Manual — part 288
OnStar System
OnStar System Interface Unit Input Test
'03 Model
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.
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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
B12
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
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OnStar System
OnStar Buttons and Microphone Input Test
'03 Model
1. Pry off the OnStar buttons and microphone/homelink buttons.
2. 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 switches and microphone must be faulty; replace it.
•: A3 and A4 terminals are microphone lines for navigation system.
ONSTAR BUTTONS AND MICROPHONE/
HOMELINK BUTTONS
Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
A1
A2
WHT
BLK
Ignition switch in ACC
(II) OnStar "DOT" button
pushed. Speak into the
microphone.
Under all conditions
Check for voltage to ground:
There should be 4V.
Check for continuity go ground:
There should be continuity.
• An open in the wire
• An open in the wire
B1
B2
B3
B4
B5
B6
RED/BLK
YEL/GRN
BLU/YEL
WHT/GRN
ORN
BLK
Under all conditions
Ignition switch in ACC
(II)
Ignition switch in ACC
(II)
Ignition switch in ACC
(II)
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.
Under all condition
Check for voltage to ground:
There should be battery voltage.
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 8 V.
Check for voltage to ground:
There should be about 8 V.
Check for voltage to ground:
There should be about 4 V.
Check for continuity go ground:
There should be continuity.
• 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
• Poor ground (G401)
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Cellular Phone Antenna Replacement
1. Remove the rear ceiling light.
2. Disconnect the connectors from the cellular phone
antenna and the XM antenna.
3. Remove the nuts from the cellular phone antenna
and the XM antenna.
4. Remove the cellular phone antenna and the XM
antenna.
NUT
5 N-m
(0.5 kgf-m, 4 Ibf-ft)
5. Remove from the cellular phone antenna from the
XM antenna.
XM ANTENNA
CELLULAR PHONE
ANTENNA
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