Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
3. With the scan tool, read the RADIO/ETM DTCs.
  Is the DTC active?
  
  Yes
  - Go To Step 2.
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK REAR CAMERA AND RADIO/ETM CONNECTIONS
1. Turn the ignition off.
2. Check for loose, damaged or corroded connections on the rear camera or the RADIO/ETM.
  Are there any loose or damaged connections?
  
  Yes
  - Repair the wiring connections as necessary.
  No
  - Go to Step 3.
CHECK THE (X970) (X971) AND (X972) CAMERA CIRCUITS FOR AN OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (X970) Camera Signal circuit between the Camera connector and the Radio harness connector.
2. Measure the resistance of the (X971) Camera Return circuit between the Camera connector and the Radio harness connector.
3. Measure the resistance of the (X972) Camera Shield circuit between the Camera connector and the Radio harness connector.
  Is the resistance above 3.0 ohms on each Camera circuit?
  
  Yes
  - Repair the Camera circuit(s) for an open or high resistance.
  No
  - Go to Step 4.
CHECK THE (X970) (X971) AND (X972) CAMERA CIRCUITS FOR A SHORT TO GROUND
1. Check for continuity between ground and the (X970) Camera Signal circuit at the Radio harness connector.
2. Check for continuity between ground and the (X971) Camera Return circuit at the Radio harness connector.
3. Check for continuity between ground and the (X972) Camera Shield circuit at the Radio harness connector.
  Is there continuity between ground and any Camera circuit?
  
  Yes
  - Repair the Camera circuit(s) for a short to ground.
  No
  - Go to Step 5.
CHECK REAR CAMERA OPERATION
1. Check that the rear camera is working properly.
  Is the Rear camera operating properly?
  
  Yes
  - Go To Step 6.
  No
  - Replace the rear camera in accordance with Service Information. Refer to CAMERA, REAR, REMOVAL AND INSTALLATION .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all RADIO/ETM Module harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all RADIO/ETM Module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read RADIO/ETM Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the RADIO/ETM in accordance with the Service information. Refer to DISPLAY, RADIO, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.