Audio System Symptom Troubleshooting - Rearview camera image does not come on
Rearview camera image does not come on
NOTE:
Check the vehicle 12 volt battery condition first.
Check the connectors for poor connections or loose terminals.
1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Shift the transmission to R position/mode.

Does the audio display image change when the transmission is shifted to R position/mode?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
The failure is duplicated, go to step 2.
2.
In Line Diag check:

In Line Diag check
?1.
Shift the transmission to Neutral or P position/mode.

?2.
Go into the System Diagnostic Mode, and use the In Line Diag to check the rearview camera connection.

Does the Rear Camera indicate OK?

     
YES
     
     
     
Go to step 7.
     
NO
     
     
     
Go to step 3.
3.
Determine possible failure area (CAMERA ADPT line, others):

Determine possible failure area (CAMERA ADPT line, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Rearview camera 8P connector

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Rearview camera 8P connector: disconnected
   
Test point 1
Rearview camera 8P connector No. 1 (2-door)
Rearview camera 8P connector No. 6 (except 2-door)
Test point 2
Body ground

Is there about 5.0 V?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Go to step 4.
4.
Open wire check (CAMERA ADPT line):

Open wire check (CAMERA ADPT line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Rearview camera 8P connector: disconnected
Test point 1
Audio unit connector C (32P) No. 16
Test point 2
Body ground

Is there about 5.0 V?

     
YES
     
     
     
Repair an open in the wire between the audio unit and the rearview camera.?
     
NO
     
     
     
5.
Determine possible failure area (rearview camera, others):

Determine possible failure area (rearview camera, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Rearview camera 8P connector: disconnected
Test point 1
Rearview camera 8P connector No. 5
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Go to step 6.
6.
Open wire check (SH CAMERA line):

Open wire check (SH CAMERA line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Rearview camera 8P connector: disconnected
Test point 1
Audio unit connector C (32P) No. 28
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
There is an open in the wire(s) between the audio unit and the rearview camera. Replace the affected shielded harness.?
     
NO
     
     
     
7.
Determine possible failure area (BACK LT line, others):

Determine possible failure area (BACK LT line, others)
?1.
Go into the System Diagnostic Mode, and use the MICU_ICU in the Vehicle Information to check the BACK signal.

?2.
Shift the transmission to R position/mode.

Does the C_BACKLTSW signal change from [0] to [1] when the transmission is shifted from Neutral or P position/mode to R position/mode?

     
YES
     
     
     
Go to step 9.
     
NO
     
     
     
Go to step 8.
8.
Open wire check (B-CAN_H line, B-CAN_L line):

Open wire check (B-CAN_H line, B-CAN_L line)
?1.
Shift the transmission to Neutral or P position/mode.

?2.
Turn the vehicle to the OFF (LOCK) mode.

?3.
Disconnect the following connectors.
Body control module connector B (36P)
Audio unit connector A (24P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Body control module connector B (36P): disconnected
 
Audio unit connector A (24P): disconnected
Test point 1
Body control module connector B (36P) No. 20
Test point 2
Audio unit connector A (24P) No. 14


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Repair an open in the wire(s) between the audio unit and the body control module.?
9.
Shorted wire check (CAMERA VCC, CAMERA GND, CAMERA V lines):

Shorted wire check (CAMERA VCC, CAMERA GND, CAMERA V lines)
?1.
Shift the transmission to Neutral or P position/mode.

?2.
Turn the vehicle to the OFF (LOCK) mode.

?3.
Disconnect the following connectors.
Audio unit connector C (32P)
Rearview camera 8P connector

?4.
Check for continuity between the following test points and body ground individually.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector C (32P): disconnected
 
Rearview camera 8P connector: disconnected

Connector
Terminal
Audio unit connector C (32P)
No. 13
No. 14
No. 29

Is there continuity?

     
YES
     
     
     
There is a short to body ground in the wire(s) between the audio unit and the rearview camera. Replace the affected shielded harness.?
     
NO
     
     
     
The CAMERA VCC, CAMERA GND, and CAMERA V wires are not shorted to ground. Go to step 10.
10.
Shorted wire check (CAMERA lines):

Shorted wire check (CAMERA lines)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector C (32P): disconnected
 
Rearview camera 8P connector: disconnected

Test point 1:
Audio unit connector C (32P)
Test point 2:
Audio unit connector C (32P)
No. 13
No. 14, No. 28, No. 29
No. 14
No. 28, No. 29
No. 28
No. 29

Is there continuity between any of the terminals?

     
YES
     
     
     
There is a short in the wires between the audio unit and the rearview camera. Replace the affected shielded harness.?
     
NO
     
     
     
The CAMERA wires are not shorted in the wires. Go to step 11.
11.
Open wire check (CAMERA VCC, CAMERA GND, CAMERA V lines):

Open wire check (CAMERA VCC, CAMERA GND, CAMERA V lines)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector C (32P): disconnected
 
Rearview camera 8P connector: disconnected

Test point 1:
Audio unit connector C (32P)
Test point 2:
Rearview camera 8P connector
No. 13
No. 2
No. 14
No. 8
No. 29
No. 7

Is there continuity?

     
YES
     
     
     
The CAMERA VCC, CAMERA GND, and CAMERA V wires are OK. Go to step 12.
     
NO
     
     
     
There is an open in the wire(s) between the audio unit and the rearview camera. Replace the affected shielded harness.?
12.
Voltage check (CAMERA VCC line):

Voltage check (CAMERA VCC line)
?1.
Reconnect audio unit connector C (32P).

?2.
Reconnect the rearview camera 8P connector.

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
Test point 1
Audio unit connector C (32P) No. 13
Test point 2
Body ground

Is there about 8.0 V?

     
YES
     
     
     
Go to step 13.
     
NO
     
     
     
13.
Rearview camera check (substitution):

Rearview camera check (substitution)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Substitute a known-good rearview camera, and recheck.

Does the symptom go away?

     
YES
     
     
     
Replace the original rearview camera.?
     
NO