Diagnostic Test

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 DTCs.
2. With the scan tool, erase the DTCs.
3. With the scan tool, reset the Amplifier.
4. Turn the radio on and set the volume at 25.
5. Adjust the speakers to the rear and center.
6. Adjust the Bass to mid level.
7. With the scan tool, read the active DTCs.
  Does the scan tool display: B1481-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
  
  Yes
  - Go to step 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the SYSTEM 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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE OPERATION OF THE SUBWOOFER SPEAKER

Fig 1: Checking Operation Of Subwoofer Speaker
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Subwoofer Speaker harness connector.
3. Turn the ignition on.
4. Turn the radio on with the same settings as in the previous step.
5. With a voltmeter set to read A/C voltage, measure the voltage of the Amplified Subwoofer 1 circuits in the Subwoofer Speaker harness connector.
  Is the voltage above 1 volt?
  
  Yes
  - Replace the Subwoofer Speaker in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 3
CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT FOR AN OPEN

Fig 2: Checking Amplified Subwoofer 1 (+) Circuit For An Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Radio Amplifier C2 harness connector.
3. Measure the resistance of the (X300) Amplified Subwoofer 1 (+) circuit between the Radio Amplifier C2 harness connector and the Subwoofer Speaker harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the (X300) Amplified Subwoofer 1 (+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT FOR AN OPEN

Fig 3: Checking Amplified Subwoofer 1 (-) Circuit For An Open
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (X390) Amplified Subwoofer 1 (-) circuit between the Radio Amplifier C2 harness connector and the Subwoofer Speaker harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Radio Amplifier in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the (X390) Amplified Subwoofer 1 (-) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .