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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.
  1. VERIFY OPERATION OF THE RADIO AND BACKUP LAMPS 
    1. Verify the operation of the Radio and Backup Lamps.

      Do the Radio and Backup Lamps operate correctly?

      Yes 

      • Go To  2.

      No 

      • Diagnose any problems with the Radio and Backup Lamps.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  2. CHECK THE (F71) FUSED RUN RELAY OUTPUT CIRCUIT 
    Fig 1: Measuring Voltage Of Backup Lamp Feed Circuit
    GC0091278Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Apply the parking brake.
    3. Disconnect the Rear Video Camera Assembly Harness Connector.
    4. Turn the ignition on.
    5. Measure the voltage between the (F71) Fused Run Relay Output circuit and ground.

      Is battery voltage present?

      Yes 

      • Go To  3.

      No 

      • Repair the (F71) Fused Run Relay Output circuit for an open or short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (Z914) GROUND CIRCUIT 
    Fig 2: Measuring Resistance Between Ground And Ground Circuit
    GC0091279Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (Z914) Ground Circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4.

      No 

      • Repair the (Z914) Ground circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (X970) CAMERA SIGNAL, THE (X971) RETURN, AND THE (X972) SHIELD CIRCUITS FOR AN OPEN CIRCUIT 
    Fig 3: Checking Camera Signal, The Return, And The Shield Circuits For An Open Circuit
    GC0091280Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Radio C3 harness connector.
    2. Measure the resistance of the (X970) (X971) and (X972) circuits between the Rear Camera harness connector and Radio C3 harness connectors.

      Is the resistance below 5.0 Ohms on the (X970) (X971) or (X972) circuits?

      Yes 

      • Go To  5.

      No 

      • Repair the appropriate circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. CHECK THE (X970) CAMERA SIGNAL, THE (X971) RETURN, AND THE (X972) SHIELD CIRCUITS SHORTED TO GROUND 
    Fig 4: Checking Camera Signal, The Return, And The Shield Circuits Shorted To Ground
    GC0091281Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (X970) (X971) and (X972) circuits.

      Is the resistance below 5.0 Ohms on the (X970) (X971) or (X972) circuits?

      Yes 

      • Repair the appropriate circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Rear Camera Assembly in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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