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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 944 (Driver Door Module (DDM) (DMFL/R) - Electrical Diagnostics - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> B1DD0-15-Mirror Heater Control - Circuit Short To Battery Or Open >> Diagnostic Test

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.
  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
    3. Turn the turn signal on, if equipped with turn signal mirror.
    4. Open the driver door to turn the approach lamps on, if equipped. Leave the door open.
    5. Turn the rear defogger on.
    6. Press and release the Mirror Select switch to select the Driver Outside Rearview Mirror.
    7. Operate the Mirror Adjust switch in all directions several times while monitoring the scan tool for DTCs.
      NOTE:

      After adjusting the mirror in one direction wait at least two seconds before adjusting the mirror in the opposite direction, as this will allow time for an active fault to set if present.

    8. With the scan tool, read DDM DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

      • The condition or conditions that originally set this DTC are not present at this time. For vehicle's equipped with folding outside rearview mirrors, repeat test with mirror folded. If DTC is now active, Go To  1. Otherwise, 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 .
  2. CHECK THE (C16) DRIVER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Driver Outside Rearview Mirror C2 (Component Side) connector from the Door Module C2 harness connector.
    3. Turn the ignition on.
    4. Measure the voltage between ground and the (C16) Driver Mirror Heater Driver circuit in the Driver Outside Rearview Mirror C2 (Component Side) connector.

      Is there any voltage present?

      Yes 

      No 

      • Go To  3
  3. CHECK THE (C16) DRIVER MIRROR HEATER DRIVER CIRCUIT AND (C160) DRIVER MIRROR HEATER RETURN CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Check for continuity between the (C16) Driver Mirror Heater Driver circuit and the (C160) Driver Mirror Heater Return circuit at the Driver Outside Rearview Mirror C2 (Component Side) connector.

      Is there continuity between the (C16) Driver Mirror Heater Driver circuit and the (C160) Driver Mirror Heater Return circuit?

      Yes 

      • Go To  4

      No 

  4. CHECK THE (C16) DRIVER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO ANOTHER MIRROR DRIVER OR SIGNAL CIRCUIT 
    1. Check for continuity between the (C16) Driver Mirror Heater Driver circuit (C2-4) and each of the designated Mirror Driver and Signal circuits at the Driver Outside Rearview Mirror C1 and C2 (Component Side) connectors.

      Is there continuity between the (C16) Driver Mirror Heater Driver circuit (C2-4) and each of the designated Mirror Driver and Signal circuits?

      Yes 

      No 

      • Inspect the wiring and connectors for damage and repair as necessary. If the wiring and connectors are okay, replace the Door Module in accordance with the Service Information. Refer to MODULE, DOOR, REMOVAL .
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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