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 Amplifier DTCs.
2. With the scan tool, read Amplifier DTCs and record on the repair order.
3. With the scan tool, erase DTCs.
4. Cycle the ignition switch from on to off, wait five seconds and then back to on.
5. Turn the Radio on.
6. Adjust the speakers to the rear and center.
7. With the scan tool, read Amplifier DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - 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. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK FOR VOLTAGE ON THE (X304) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT
1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Disconnect the Right Rear Speaker harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (X304) Right Rear Speaker (+) circuit at the Amplifier C2 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (X304) Right Rear Speaker (+) circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK FOR VOLTAGE ON THE (X394) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT
1. Measure the voltage between ground and the (X394) Right Rear Speaker (-) circuit at the Amplifier C2 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (X394) Right Rear Speaker (-) circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Amplifier in accordance with the Service Information. Refer to AMPLIFIER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .