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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio/Video - Non-DTC Based Diagnostics >> Diagnosis And Testing >> Rear Camera Inoperative >> Diagnostic Test

Diagnostic Test

  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 BODY VERIFICATION TEST .
  2. CHECK THE (F924) FUSED RUN RELAY OUTPUT CIRCUIT 
    1. Turn the ignition off.
    2. Apply the parking brake.
    3. Disconnect the Rear Camera Assembly Harness connector.
    4. Turn the ignition on.
    5. Measure the voltage between the (F924) Fused Run Relay Output circuit and ground.

      Is battery voltage present?

      Yes 

      • Go To  3

      No 

      • Repair the (F924) Fused Run Relay Output circuit for an open or short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK THE (Z918) GROUND CIRCUIT 
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (Z918) Ground Circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (Z918) Ground circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK THE (X970) CAMERA SIGNAL, THE (X971) RETURN, AND THE (X972) SHIELD CIRCUITS FOR AN OPEN CIRCUIT 
    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 BODY VERIFICATION TEST .
  5. CHECK THE (X970) CAMERA SIGNAL, THE (X971) RETURN, AND THE (X972) SHIELD CIRCUITS SHORTED TO GROUND 
    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 BODY VERIFICATION TEST .

      No 

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