Diagnostic Test

CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. Using 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. Turn the Radio on and set the volume to 25.
5. Adjust the speakers to the rear and center.
6. Using the scan tool, read the active Amplifier DTCs.
  Does the scan tool display active: B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?
  
  Yes
  - Go To 2
  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 STANDARD PROCEDURE .
CHECK THE OPERATION OF THE LEFT REAR SPEAKER

Fig 1: Left Rear Speaker Harness Connector End View
Courtesy of CHRYSLER GROUP, LLC
1. Using the scan tool, erase the DTCs.
2. Turn the ignition off.
3. Disconnect the Left Rear Speaker harness connector from the Left Rear Speaker.
4. Turn the ignition on.
5. Turn the radio on and set the volume to 25.
6. Using the scan tool, read the active Amplifier DTCs.
  Does the scan tool display active: B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?
  
  No
  - Replace the Left Rear Speaker in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  Yes
  - Go To 3
CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT AND THE (X295) LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TOGETHER

Fig 2: Checking Left Rear Speaker (+) Circuit For Short To Left Rear Speaker (-) Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance between the (X205) Left Rear Speaker (+) circuit and the (X295) Left Rear Speaker (-) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X205) Left Rear Speaker (+) circuit for a short to the (X295) Left Rear Speaker (-) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Amplifier in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .