Diagnostic Test

WARNING: This page is about a different car, the 2012 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN INTERMITTENT CONDITION
NOTE:
A front door must remain open whenever checking or erasing TGW DTCs.
1. Using the scan tool, record and erase the TGW DTCs.
2. Cycle the ignition switch from on to off, wait five seconds and then back to on.
3. Turn the radio on and set the volume to 25.
4. Adjust the speakers to the Rear and center.
5. Using the scan tool, read the active TGW DTCs.
  Does the scan tool display active: B1408-12-REAR LEFT AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO BATTERY?
  
  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.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
CHECK FOR VOLTAGE ON THE (X303) LEFT REAR SPEAKER (+) CIRCUIT

Fig 1: Measuring For Voltage On Left Rear Speaker (+) Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the TGW harness connector.
3. Disconnect the Left Rear Speaker harness connector.
4. Turn the ignition on.
5. Measure for voltage between the (X303) Left Rear Speaker (+) circuit and ground.
  Is there any voltage present?
  
  Yes
  - Repair the (X303) Left Rear Speaker (+) circuit for a short to voltage.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
  No
  - Go To 3.
CHECK FOR VOLTAGE ON THE (X393) LEFT REAR SPEAKER (-) CIRCUIT

Fig 2: Measuring For Voltage On Left Rear Speaker (-) Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure for voltage between the (X393) Left Rear Speaker (-) circuit and ground.
  Is there any voltage present?
  
  Yes
  - Repair the (X393) Left Rear Speaker (-) circuit for a short to voltage.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
  No
  - Replace the TGW in accordance with the Service Information. Refer to MODULE, TELEMATICS GATEWAY, REMOVAL .
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.