Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on and open one of the front doors.
  NOTE:
  A front door must remain open whenever checking or erasing Amplifier DTC's.
2. Using the scan tool, record and erase the Amplifier DTC's.
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 20.
5. Adjust the speakers to the rear and center.
6. Using the scan tool, read the active Amplifier DTC's.
  Does the scan tool display active: B147F-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT LOW?
  
  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 BODY VERIFICATION TEST .
CHECK THE SUBWOOFER SPEAKER

Fig 1: Subwoofer Speaker Connector End View
Courtesy of CHRYSLER GROUP, LLC
1. Make sure one of the front doors is still open.
2. Using the scan tool, erase the DTC's.
3. Turn the ignition off.
4. Disconnect the Subwoofer Speaker harness connector.
5. Turn the ignition on.
6. Turn the radio on and set the volume to 25.
7. Using the scan tool, read the active Amplifier DTC's.
  Does the scan tool display active: B147F-CHANNEL 7 OUTPUT CIRCUIT LOW?
  
  Yes
  - Go To 3.
  No
  - Replace the Subwoofer Speaker.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Amplified Subwoofer 1 (+) Circuit For A Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Amplifier C2 harness connector.
2. Disconnect the Subwoofer Speaker harness connector.
3. Measure the resistance between ground and the (X300) Amplified Subwoofer 1 (+) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X300) Amplified Subwoofer 1 (+) circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4.
CHECK THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT FOR A SHORT TO GROUND

Fig 3: Checking Amplified Subwoofer 1 (-) Circuit For A Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between ground and the (X390) Amplified Subwoofer 1 (-) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X390) Amplified Subwoofer 1 (-) circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Amplifier in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .