Audio System Symptom Troubleshooting - Rearview camera image does not come on or work properly
Rearview camera image does not come on or work properly
NOTE:
Check the vehicle 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 multi-information display unit 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.
DTC check:

DTC check
?1.
Shift the transmission to P position/mode or N position/mode.

?2.
Check for hard error codes.

Are there any audio DTCs indicated?

     
YES
     
     
     
Go to indicated DTC's troubleshooting.?
     
NO
     
     
     
Go to step 3.
3.
Determine possible failure area (BACK LT line, others):

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

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

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

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Go to step 4.
4.
Open wire check (BACK LT line):

Open wire check (BACK LT line)
?1.
Shift the transmission to P position/mode or N position/mode.

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

?3.
Disconnect the following connector.
Audio unit connector C (24P)

?4.
Turn the vehicle to the ON mode.

?5.
Shift the transmission to R position/mode.

?6.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Audio unit connector C (24P): disconnected
Test point 1
Audio unit connector C (24P) No. 7
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
     
NO
     
     
     
Repair an open in the wire between the audio unit and the under-dash fuse/relay box.?
5.
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. 6
Test point 2
Body ground

Is there about 3.0 V?

     
YES
     
     
     
The CAMERA ADPT wire is OK. Go to step 7.
     
NO
     
     
     
Go to step 6.
6.
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 (24P) No. 19
Test point 2
Body ground

Is there about 3.0 V?

     
YES
     
     
     
Repair an open in the wire between the audio unit and the rearview camera.?
     
NO
     
     
     
7.
Open wire check (CAMERA lines):

Open wire check (CAMERA lines)
?1.
Shift the transmission to P position/mode or N position/mode.

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

?3.
Disconnect the following connector.
Audio unit connector C (24P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
   
 
Rearview camera 8P connector: disconnected
 
Audio unit connector C (24P): disconnected

2-door
Test point 1:
Audio unit connector C (24P)
Test point 2:
Rearview camera 8P connector
No. 16
No. 1
No. 3
No. 3
No. 15
No. 5
No. 4
No. 2
No. 2
No. 7

4-door
Test point 1:
Audio unit connector C (24P)
Test point 2:
Rearview camera 8P connector
No. 16
No. 2
No. 3
No. 8
No. 15
No. 7
No. 4
No. 1
No. 2
No. 5

Is there continuity?

     
YES
     
     
     
The CAMERA wires are not open. Go to step 8.
     
NO
     
     
     
There is an open in the wire(s) between the audio unit and the rearview camera. Replace affected shielded harness.?
8.
Shorted wire check (CAMERA lines) 1:

Shorted wire check (CAMERA lines) 1
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
   
 
Rearview camera 8P connector: disconnected
 
Audio unit connector C (24P): disconnected

Test point 1
Audio unit connector C (24P)
Test points 2
Audio unit connector C (24P)
No. 2
No. 3, No. 4, No. 15, No. 16
No. 3
No. 4, No. 15, No. 16
No. 4
No. 15, No. 16
No. 15
No. 16

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 9.
9.
Shorted wire check (CAMERA lines) 2:

Shorted wire check (CAMERA lines) 2
?1.
Check for continuity between these test points and body ground individually.
Test condition
Vehicle OFF (LOCK) mode
   
 
Rearview camera 8P connector: disconnected
 
Audio unit connector C (24P): disconnected

Connector
Terminal
Audio unit connector C (24P)
No. 3
No. 4
No. 15
No. 16

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 wires are OK. Go to step 10.
10.
Rearview camera check (substitution):

Rearview camera check (substitution)
?1.
Substitute a known-good rearview camera.

?2.
Reconnect all the connectors, and recheck.

Does the symptom go away?

     
YES
     
     
     
     
NO