Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
3. With the scan tool, read DDM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the STORED LOST COMMUNICATION DTCs diagnostic procedure. Refer to DIAGNOSIS AND TESTING .
CHECK THE LIN BUS CIRCUIT
1. Turn the ignition off.
2. Disconnect the Driver Window/Door Lock Switch C1 harness connector.
3. Turn the ignition on.
4. Measure the voltage between the (D903) Driver Door LIN Bus circuit and the (D512) Driver Door LIN Bus Return circuit in the Driver Window Switch C1 connector.
  Is the voltage above 7.0 volts?
  
  Yes
  - Replace the Driver Window/Door Lock Switch.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (D903) DRIVER DOOR LIN BUS CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Driver Door Module C5 harness connector.
3. Check for.
  Is there continuity between Ground and the (D903) Driver Door LIN Bus circuit in the Door Module C5 harness connector?
  
  Yes
  - Repair the (D903) Driver Door LIN Bus circuit for a short to the ground.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
CHECK THE (D903) DRIVER DOOR LIN BUS CIRCUIT FOR A SHORT TO THE (D512) DRIVER DOOR LIN BUS RETURN CIRCUIT
1. Check for continuity between the (D903) Driver Door LIN Bus circuit and the (D512) Driver Door LIN Bus Return circuit in the Door Module C5 harness connector.
  Is there continuity between the (D903) Driver Door LIN Bus circuit and the (D512) Driver Door LIN Bus Return circuit in the Door Module C5 harness connector?
  
  Yes
  - Repair the (D903) Driver Door LIN Bus circuit for a short to the (D512) Driver Door LIN Bus Sense Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Driver Door Module in accordance with the Service Information. Refer to MODULE, DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .