Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  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 (G74) PASSENGER DOOR AJAR SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the BCM F harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (G74) Passenger Door Ajar Switch Sense circuit.
  Is voltage present?
  
  Yes
  - Repair the (G74) Passenger Door Ajar Switch Sense circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (G74) PASSENGER DOOR AJAR SWITCH SENSE CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Passenger Door Latch harness connector.
3. Measure the resistance of the (G74) Passenger Door Ajar Switch Sense circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (G74) Passenger Door Ajar Switch Sense circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (P372) RIGHT DOOR AJAR SWITCH RETURN CIRCUIT FOR AN OPEN
1. Measure the resistance between of the (P372) Right Door Ajar Switch Return circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (P372) Right Door Ajar Switch Return circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE DOOR LATCH FOR CORRECT OPERATION
1. Connect a jumper wire across the Door Ajar Switch Sense circuit and Return in the Door Latch harness connector.
2. Turn the ignition on.
3. With the scan tool, read DTCs.
  Does the scan tool display DTC: B1812-11- PASSENGER DOOR AJAR - CIRCUIT SHORT TO GROUND?
  
  Yes
  - Replace the Door Latch in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .