Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read Amplifier (AMP) DTCs and record on the repair order.
3. With the scan tool, erase DTCs.
4. Turn the Radio on.
5. With the scan tool, read 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 FOR BCM DTCS
1. With the scan tool, read DTCs.
2. Check for any BCM configuration DTCs.
  Were there any BCM configuration DTCs?
  
  Yes
  - Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
  No
  - Go To 3
CHECK THE BCM
Has the BCM been reprogrammed or replaced without being programed?

Yes
- Program the BCM if not programmed. With the scan tool, perform the Restore vehicle configuration.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 4
CHECK THE AMPLIFIER DTCS
Is the DTC active?

Yes
- Replace the Amplifier in accordance with the service information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .