Navigation System Symptom Troubleshooting - Rearview camera image does not come on or work properly(With Display Audio)
NOTE:
- Check the vehicle 12 volt battery condition first .
- Check the connectors for poor connections or loose terminals.
- 1. Problem verification:
- 1. Turn the vehicle to the ON mode.
- 2. Shift the transmission to R position/mode.
Does the audio-navigation 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. DTC check:
- 1. Shift the transmission to P position/mode.
- 2. Check for hard error codes .
Are there any navigation DTCs indicated?
YES
Go to indicated DTC's troubleshooting.
NO
Go to step 3.
- 3. Determine possible failure area (BACK LT line, others):
- 1. Go into the System Diagnostic Mode, and use the Vehicle Status 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 position/mode to R position/mode?
YES
Go to step 5.
NO
Go to step 4.
- 4. Open wire check (BACK LT line):
- 1. Shift the transmission to P position/mode.
- 2. Turn the vehicle to the OFF (LOCK) mode.
- 3. Disconnect the following connector.
Audio-navigation unit connector G (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-navigation unit connector G (24P): disconnected Test point 1 Audio-navigation unit connector G (24P) No. 7 Test point 2 Body ground Is there battery voltage?
YES
Replace the audio-navigation unit .
NO
Repair an open in the wire between the audio-navigation unit and the under-dash fuse/relay box.
- 5. Shorted wire check (CAMERA lines, RC lines) 1:
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connectors.
Audio-navigation unit connector G (24P) Rearview camera 12P connector - 3. Check for continuity between the following test points and body ground individually.
Test condition Vehicle OFF (LOCK) mode Audio-navigation unit connector G (24P): disconnected Rearview camera 12P connector: disconnected Connector Terminal Audio-navigation unit connector G (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-navigation unit and the rearview camera. Replace the affected shielded harness.
NO
The CAMERA and the RC wires are not shorted to ground. Go to step 6.
- 6. Shorted wire check (CAMERA lines, RC lines) 2:
- 1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Audio-navigation unit connector G (24P): disconnected Rearview camera 12P connector: disconnected Test point 1:Audio-navigation unit connector G (24P) Test point 2:Audio-navigation unit connector G (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-navigation unit and the rearview camera. Replace the affected shielded harness.
NO
The CAMERA wires and the RC wires are not shorted in the wires. Go to step 7.
- 7. Open wire check (CAMERA lines, RC lines):
- 1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Audio-navigation unit connector G (24P): disconnected Rearview camera 12P connector: disconnected Test point 1:Audio-navigation unit connector G (24P) Test point 2:Rearview camera 12P connector No. 3 No. 7 No. 4 No. 6 No. 15 No. 9 No. 16 No. 4 Is there continuity?
YES
The CAMERA and the RC wires are OK. Go to step 8.
NO
There is an open in the wire(s) between the audio-navigation unit and the rearview camera. Replace the affected shielded harness.
- 8. Voltage check (CAMERA VCC line):
- 1. Reconnect audio-navigation unit connector G (24P).
- 2. Reconnect the rearview camera 12P 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-navigation unit connector G (24P) No. 16 Test point 2 Body ground Is there about 8.0 V?
YES
Go to step 9.
NO
- 9. 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