Diagnostic Routine J

Diagnostic Routine J

Diagnostic Overview

Poor Image Quality

Refer to Wiring Diagram Set 131 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Image Display .

Pinpoint Test

1. CHECK AND CLEAN THE REAR VIDEO CAMERA LENS

1. Clean and make sure the rear video camera lens is clear of any debris.

2. Test the video camera system and verify the video camera image.

Is the video camera concern still present?








2. CHECK THE VIDEO CAMERA (+) AND (-) SIGNAL CIRCUITS INTEGRITY

1. Ignition OFF.

2. Disconnect: APIM (Accessory Protocol Interface Module).

3. Measure:





Is the resistance between 74 and 106 ohms?








3. CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN

1. Disconnect: Video Camera.

2. Measure:





Is the resistance less than 3 ohms?








4. CHECK THE VIDEO CAMERA (+) AND (-) SIGNAL CIRCUITS FOR A SHORT TO GROUND

1. Measure:





Are the resistances greater than 10,000 ohms?








5. CHECK THE VIDEO CAMERA (+) AND (-) SIGNAL CIRCUITS FOR A SHORT TO THE VIDEO SHIELD

1. Measure:





Are the resistances greater than 10,000 ohms?








6. CHECK THE VIDEO CAMERA (+) AND (-) SIGNAL CIRCUITS FOR AN OPEN

1. Connect a fused jumper wire:





2. Measure:





Is the resistance less than 3 ohms?








7. CHECK THE VIDEO CAMERA (+) SIGNAL CIRCUIT FOR AN OPEN

1. Measure:





Is the resistance less than 3 ohms?








8. CHECK THE SHIELD CIRCUIT FOR AN OPEN

1. Disconnect: In-line C211.

2. Measure:





Is the resistance less than 3 ohms?








9. CHECK FOR CORRECT VIDEO CAMERA OPERATION

1. Disconnect the video camera connector.

2. Check for:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

3. Reconnect the video camera connector. Make sure it seats and latches correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?