Diagnostic Test

READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, record and erase the Amplifier DTCs.
4. Cycle the ignition switch from on to off, wait five seconds and then back to on.
5. Turn the Amplifier on and set the volume to 25.
6. With the scan tool, read the active Amplifier DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the appropriate INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
PERFORM A RESTORE VEHICLE CONFIGURATION IN THE BCM
1. With the scan tool, perform the Restore Vehicle Configuration in the BCM.
2. With the scan tool, record and erase the Amplifier DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. With the scan tool, read the active Amplifier DTCs.
  Is the DTC active?
  
  Yes
  - Replace the Amplifier in accordance with the Service Information. Refer to AMPLIFIER (AMP), REMOVAL AND INSTALLATION .
  - 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.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .