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.

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Turn the drivers side turn signal on.
4. Press and release the Mirror Select switch to select the Driver Outside Rearview Mirror.
5. With the scan tool, read the active DTCs.
  Does the scan tool display: B173D-13-MIRROR SIGNAL LAMP CONTROL - CIRCUIT OPEN?
  
  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 (P501) DRIVER MIRROR TURN SIGNAL DRIVER CIRCUIT FOR AN OPEN TO THE (P593) DRIVER MIRROR TURN SIGNAL RETURN CIRCUIT

Fig 1: Checking Driver Mirror Turn Signal Driver Circuit For Open To Driver Mirror Turn Signal Return Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between the (P501) Driver Mirror Turn Signal Driver circuit and the (P593) Driver Mirror Turn Signal Return circuit in the Driver Outside Rearview Mirror C2 (Component Side) harness connector.
  Is the resistance below 30.0 Ohms?
  
  Yes
  - Replace the Door Module in accordance with the Service Information. Refer to MODULE, DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the open in the (P501) Driver Mirror Turn Signal Driver circuit. If the wiring harness and harness connectors are okay, replace the Driver Outside Rearview Mirror in accordance with the Service Information. Refer to MIRROR, OUTSIDE REARVIEW, REMOVAL and MIRROR, OUTSIDE REARVIEW, GLASS, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .