Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 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, record and erase the DTCs.
3. Block the Light Sensor in the Interior Rearview Mirror.
4. Shift the transmission to Drive (engine not running)
5. Wait two minutes.
6. With the scan tool, read DDM DTCs.
  Is this DTC active?
  
  Yes
  - Go To 2
  No
  - 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 and repair as necessary. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (P135) DRIVER AUTO DAY/NIGHT MIRROR SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Driver Outside Rearview Mirror (C1) harness connector.
3. Check for continuity between ground and the (P135) Driver Auto Day/Night Mirror Signal at the Driver Outside Rearview Mirror (C1) harness connector.
  Is there continuity between ground and the (P135) Driver Auto Day/Night Mirror Signal?
  
  Yes
  - Repair the (P135) Driver Auto Day/Night Mirror Signal circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (P135) DRIVER AUTO DAY/NIGHT MIRROR SIGNAL CIRCUIT FOR A SHORT TO THE (P136) DRIVER AUTO DAY/NIGHT MIRROR RETURN CIRCUIT
1. Check for continuity between the (P135) Driver Auto Day/Night Mirror Signal circuit and the (P136) Driver Auto Day/Night Mirror Return circuit at the Driver Outside Rearview Mirror (C1) harness connector.
  Is there continuity between the (P135) Driver Auto Day/Night Mirror Signal circuit and the (P136) Driver Auto Day/Night Mirror Return circuit?
  
  Yes
  - Repair the (P135) Driver Auto Day/Night Mirror Signal circuit for a short to the (P136) Driver Auto Day/Night Mirror Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
CHECK THE (P135) DRIVER AUTO DAY/NIGHT MIRROR SIGNAL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT
1. Check for continuity between the (P135) Driver Auto Day/Night Mirror Signal circuit and any other circuit in the Driver Outside Rearview Mirror (C1) harness connector.
  Is there continuity between the (P135) Driver Auto Day/Night Mirror Signal circuit and any other circuit?
  
  Yes
  - Repair the (P135) Driver Auto Day/Night Mirror Signal circuit for a short to another 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 .