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 and open one of the front doors.
  NOTE:
  A front door must remain open whenever checking or erasing Radio DTCs.
2. Using the scan tool, record and erase the Radio DTCs.
3. Turn the Radio on.
4. Adjust the speakers to the rear and center.
5. Using the scan tool, read the active Radio DTCs.
  Does the scan tool read: B140B-REAR LEFT 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 LEFT REAR SPEAKER

Fig 1: Measuring Resistance Of Speaker Between Two Terminals
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Left Rear Speaker.
3. Measure the resistance of the speaker between the two terminals.
  NOTE:
  The graphic shows the connector for reference only. Measure between the speaker terminals.
  
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Replace the Left Rear Speaker in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN

Fig 2: Checking Left Rear Speaker (+) Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Radio C2 harness connector.
3. Measure the resistance of (X205) Left Rear Speaker (+) circuit between the Radio C2 connector, and the Left Rear Speaker harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair open in the (X205) Left Rear Speaker (+) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (X295) LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN

Fig 3: Checking Left Rear Speaker (-) Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of (X295) Left Rear Speaker (-) circuit between the Radio C2 connector, and the Left Rear Speaker harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Radio in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair open in the (X295) Left Rear Speaker (-) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .