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 appropriate SYSTEM 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 THE OPERATION OF THE AMPLIFIED RIGHT REAR SPEAKER
1. Turn the ignition off.
2. Disconnect the Right Rear Speaker harness connector.
3. Measure the resistance between the (X304) Amplified Right Rear Speaker (+) circuit and the (X394) Amplified Right Rear Speaker (-) circuit at the Right Rear Speaker.
  Is the resistance of the speaker less than 1.0 Ohm?
  
  Yes
  - Replace the Right Rear Speaker in accordance with the Service Information. Refer to SPEAKER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go to 3
CHECK THE (X304) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT, AND THE (X394) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER
1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Check for continuity between the (X304) Amplified Right Rear Speaker (+) circuit and the (X394) Amplified Right Rear Speaker (-) circuit at the Amplifier C2 harness connector.
  Is there continuity between the (X304) Amplified Right Rear Speaker (+) circuit and the (X394) Amplified Right Rear Speaker (-) circuit?
  
  Yes
  - Repair the (X304) Amplified Right Rear Speaker (+) circuit and the (X394) Amplified Right Rear Speaker(-) circuit for a short together.
  - 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 .