Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. 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. 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 front and center.
6. Using the scan tool, read the active Amplifier DTCs.
  Does the scan tool display active: B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
  
  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 FRONT SPEAKER

Fig 1: Measuring Voltage Between Left Front Speaker (+) & (-) Circuits
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Left Front Speaker harness connector.
3. Turn the ignition on.
4. Turn the radio on and turn the volume to 25.
5. With a Voltmeter set to read in A/C voltage, measure the voltage between the Left Front Speaker (+) and (-) circuits in the Left Front Speaker harness connector.
  Is the voltage present greater than 1 Volt?
  
  Yes
  - Replace the Left Front Speaker in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN

Fig 2: Measuring Resistance Of Left Front Speaker (+) Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance of the (X201) Left Front Speaker (+) circuit between the Amplifier C2 harness connector and the Left Front Speaker harness connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (X201) Left Front Speaker (+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN

Fig 3: Measuring Resistance Of Left Front Speaker (-) Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (X291) Left Front Speaker (-) circuit between the Amplifier C2 harness connector and the Left Front Speaker harness connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Replace the Amplifier in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (X291) Left Front Speaker (-) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .