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 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 the active DTCs.
  Does the scan tool display; B1F05-12-ELECTROCHROMATIC MIRROR CONTROL CIRCUIT - CIRCUIT SHORT TO BATTERY 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 .
(P137) PASSENGER AUTO DAY/NIGHT MIRROR SIGNAL CIRCUIT SHORTED TO BATTERY

Fig 1: Checking Passenger Auto Day/Night Mirror Signal Circuit For Short To Battery
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Passenger Outside Rearview Mirror (C1) harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (P137) Passenger Auto Day/Night Mirror Signal circuit.
  Is the voltage above 0.8 volts?
  
  Yes
  - Repair the short to voltage in the (P137) Passenger Auto Day/Night Mirror Signal circuit. If the harness appears good, replace the 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 .
  No
  - Go To 3
(P138) PASSENGER AUTO DAY/NIGHT MIRROR RETURN CIRCUIT OPEN

Fig 2: Checking Passenger Auto Day/Night Mirror Return Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance between the (P137) Passenger Auto Day/Night Mirror Signal circuit and the (P138) Passenger Auto Day/Night Mirror Return circuit.
  Is the resistance above 100.0 Ohms?
  
  Yes
  - Repair the open in the (P137) Passenger Auto Day/Night Mirror Return circuit. If the harness appears good, replace the 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 .
  No
  - Go To 4
(P137) PASSENGER AUTO DAY/NIGHT MIRROR SIGNAL CIRCUIT SHORTED TO ANOTHER SIGNAL OR DRIVER CIRCUIT

Fig 3: Checking Passenger Auto Day/Night Mirror Signal Circuit For Short To Another Signal Or Driver Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between the (P137) Passenger Auto Day/Night Mirror Signal circuit (C1-4) and all designated Signal and Driver circuits.
  Is the resistance below 20K Ohms in any measurement?
  
  Yes
  - Repair the short between the (P137) Passenger Auto Day/Night Mirror Signal circuit and the Signal or Driver circuit. If the harness appears good, replace the 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 .
  No
  - Replace the Passenger Door Module in accordance with the Service Information. Refer to MODULE, DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .