Audio System Symptom Troubleshooting - Rearview camera image does not change when selecting different views
Rearview camera image does not change when selecting different views
NOTE:
Check the vehicle 12 volt battery condition first.
You can select three different rearview camera angles for backing up. If there is no camera image on the display, go to Rearview camera image does not come on troubleshooting.
Check the connectors for poor connections or loose terminals.
1.
Problem verification:

Problem verification
?1.
Make sure the vehicle's parking brake is applied.

?2.
Turn the vehicle to the ON mode.

?3.
Shift the transmission to R position/mode.

?4.
Operate the audio unit to see if the rearview image changes between the wide view, the normal view, and the top down view.

Does the rearview camera image change properly?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
The failure is duplicated, go to step 2.
2.
Shorted wire check (CAMERA BIT0 line, CAMERA BIT1 line):

Shorted wire check (CAMERA BIT0 line, CAMERA BIT1 line)
?1.
Shift the transmission to P or N (Neutral) position/mode.

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

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

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector B (32P): disconnected
 
Rearview camera 8P connector: disconnected
Test point 1
Audio unit connector B (32P) No. 31
Test point 2
Body ground

Test point 1
Audio unit connector B (32P) No. 32
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to body ground in the wire(s).?
     
NO
     
     
     
The CAMERA BIT0 and the CAMERA BIT1 wires are not shorted to ground. Go to step 3.
3.
Shorted wire check (CAMERA BIT0 line to CAMERA BIT1 line):

Shorted wire check (CAMERA BIT0 line to CAMERA BIT1 line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector B (32P): disconnected
 
Rearview camera 8P connector: disconnected
Test point 1
Audio unit connector B (32P) No. 31
Test point 2
Audio unit connector B (32P) No. 32

Is there continuity?

     
YES
     
     
     
Repair a short in the wires.?
     
NO
     
     
     
The CAMERA BIT0 and the CAMERA BIT1 wires are not shorted. Go to step 4.
4.
Open wire check (CAMERA BIT0 line, CAMERA BIT1 line):

Open wire check (CAMERA BIT0 line, CAMERA BIT1 line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector B (32P): disconnected
 
Rearview camera 8P connector: disconnected
Test point 1
Audio unit connector B (32P) No. 31
Test point 2
Rearview camera 8P connector No. 2


Is there continuity?

     
YES
     
     
     
The CAMERA BIT0 and the CAMERA BIT1 wires are OK. Go to step 5.
     
NO
     
     
     
Repair an open in the wire(s).?
5.
Voltage check (CAMERA BIT0 line):

Voltage check (CAMERA BIT0 line)
?1.
Reconnect audio unit connector B (32P).

?2.
Reconnect the rearview camera 8P connector.

?3.
Turn the vehicle to the ON mode.

?4.
Shift the transmission to R position/mode.

?5.
Measure the voltage between test points 1 and 2 as specified in the table.
Test condition
Vehicle ON mode
Test point 1
Audio unit connector B (32P) No. 31
Test point 2
Body ground

Selected view mode
Voltage
Wide View
0 V
Normal View
About 4 V - 8 V
Top Down View
0 V

Is the voltage OK?

     
YES
     
     
     
Go to step 6.
     
NO
     
     
     
6.
Voltage check (CAMERA BIT1 line):

Voltage check (CAMERA BIT1 line)
?1.
Measure the voltage between test points 1 and 2 as specified in the table.
Test condition
Vehicle ON mode
Test point 1
Audio unit connector B (32P) No. 32
Test point 2
Body ground

Selected view mode
Voltage
Wide View
0 V
Normal View
0 V
Top Down View
About 4 V - 8 V

Is the voltage OK?

     
YES
     
     
     
     
NO