Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on and open one of the front doors.
  NOTE:
  A front door must remain open whenever checking or erasing Radio DTCs.
2. With the scan tool, record and erase the Radio DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. Turn the Radio on and set the volume to 25.
5. Adjust the speakers to the Rear and center.
6. With the scan tool, read Radio DTCs.
  Did the DTC return?
  
  Yes
  - Go to 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE OPERATION OF THE RIGHT REAR AUDIO
1. Turn the ignition off.
2. Disconnect the Amplifier C1 harness connector.
3. Connect a jumper wire between the (X308) Right Rear Audio (+) circuit and the (X398) Right Rear Audio (-) circuits at the Amplifier C1 harness connector.
4. Turn the ignition on.
5. Adjust the speakers to the rear and center.
6. With the scan tool, read Radio DTCs.
  Is the DTC active?
  
  Yes
  - Go to 3
  No
  - Replace the Amplifier in accordance with the Service Information. (Refer to AMPLIFIER .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X308) RIGHT REAR AUDIO (+) CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Radio C1 harness connector.
3. Measure the resistance of the (X308) Right Rear Audio (+) circuit between the Radio C1 harness connector and the Amplifier C1 harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go to 4
  No
  - Repair the (X308) Right Rear Audio (+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X398) RIGHT REAR AUDIO (-) CIRCUIT FOR AN OPEN
1. Measure the resistance of the (X398) Right Rear Audio (-) circuit between the Radio C1 harness connector and the Amplifier C1 harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go to 5
  No
  - Repair the (X398) Right Rear Audio (-) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all Radio 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 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 DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Radio in accordance with the Service information. (Refer to RADIO .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.