NOTE:
1. Problem verification:
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, CAMERA BIT1 lines):
Audio unit connector C (24P)
Rearview camera 8P connector
.png)
Is there continuity?
YES
Repair a short to body ground in the wire (s) between the audio unit and the rearview camera.
NO
The CAMERA BIT0 wire and CAMERA BIT1 wire are not shorted. Go to step 3.
3. Shorted wire check (CAMERA BIT0 line to CAMERA BIT1 line).
Check for continuity between test points 1 and 2.
.png)
Is there continuity?
YES
Repair a short in the wires between the audio unit and the rearview camera.
NO
The CAMERA BIT0 wire to CAMERA BIT1 wire are not shorted. Go to step 4.
4. Open wire check (CAMERA BIT0, CAMERA BIT1 lines).
Check for continuity between test points 1 and 2.
.png)
Is there continuity?
YES
The CAMERA BIT0 wire and CAMERA BIT1 wire are OK. Go to step 5.
NO
Repair an open in the wire (s) between the audio unit and the rearview camera.
5. Audio unit check 1 (CAMERA BIT0 line):
Audio unit connector C (24P)
Rearview camera 8P connector
.png)
Is the voltage OK?
YES
Go to step 6.
NO
Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
6. Audio unit check 2 (CAMERA BIT1 line).
Measure the voltage between test points 1 and 2 as specified in the table.
.png)
Is the voltage OK?
YES
Replace the rearview camera.
NO
Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
Rearview Camera Image Does Not Come ON Or Work Properly (Without Navigation,
Color Audio Type (5-inch Screen) )
Rearview Camera Image Does Not Come ON Or Work Properly (Without Navigation,
Display Audio Type (7-inch Screen) )
USB Device Does Not Function (With Navigation)
DTC B0020-12
Door Key Cylinder Switch Test