Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. 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.
2. With 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 20.
5. Adjust the speakers to the front and center.
6. With the scan tool, read the active Amplifier DTCs.
  Is this DTC active?
  
  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. Repair as necessary. If no problems are found, test complete.
  - Perform BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE RIGHT FRONT DOOR SPEAKER
1. With the scan tool, erase the DTCs.
2. Turn the ignition off.
3. Disconnect the Right Front Door Speaker harness connector.
4. Turn the ignition on.
5. Turn the radio on and set the volume to 25.
6. With the scan tool, read the active Amplifier DTCs.
  Does the scan tool display active: B146F-11-CHANNEL 4 AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO GROUND?
  
  Yes
  - Go To 3
  No
  - Replace the Right Front Door Speaker.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance between ground and the (X202) Right Front Door Speaker (+) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X202) Right Front Door Speaker (+) circuit for a short to ground.
  - Perform BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (X292) Right Front Door Speaker (-) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X292) Right Front Door Speaker (-) for a short to ground.
  - Perform 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 .