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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 ((Passenger Door Module (PDM) (DMFL/R) - Electrical Diagnostics)) >> DTC Troubleshooting >> B2860-15-Door Ambient Light Control - Circuit Short To Battery Or Open >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    It is recommended that a battery charger be connected and set on low during this test.

    NOTE:

    Be sure the thumb wheel on the Panel Dimmer Switch (also known as Dimmer Module) is turned fully on during this test.

    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 ignition on to off three times and leave in the On position.
    4. Turn the park lamps on.
    5. Wait one minute.
    6. With the scan tool, read the active 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. 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 BODY VERIFICATION TEST .
  2. CHECK (M35) PASSENGER DOOR AMBIENT LAMP DRIVER CIRCUIT SHORTED TO VOLTAGE 
    1. Turn the ignition off.
    2. Remove the inner door panel trim in accordance with the Service Information. Refer to PANEL, DOOR TRIM, REMOVAL .
    3. Leave the Passenger Door Map Pocket/Courtesy Lamp connector connected.
    4. Disconnect the Passenger Door Module C5 harness connector.
    5. Turn the ignition on.
    6. Measure the voltage between ground and the (M35) Passenger Door Ambient Lamp Driver circuit in the Passenger Door Module C5 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (M35) Passenger Door Ambient Lamp Driver circuit for a short to voltage.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK (M35) PASSENGER DOOR AMBIENT LAMP DRIVER CIRCUIT OPEN 
    1. Turn the ignition off.
    2. Be sure the Passenger Door Map Pocket/Courtesy Lamp connector is still connected.
    3. Turn the ignition on.
    4. Connect a fused jumper wire to the (M35) Passenger Door Ambient Lamp Driver circuit in the PDM C5 harness connector.
    5. Connect a jumper wire to the (M36) Passenger Door Lighting Return circuit in the PDM C5 harness connector.

      Does the Passenger Door Ambient Lamp illuminate brightly?

      Yes 

      No 

      • Go To  4
  4. CHECK (M36) PASSENGER DOOR LIGHTING RETURN CIRCUIT OPEN 
    1. Measure the resistance of the (M36) Passenger Door Lighting Return circuit between the PDM C5 harness connector and the Passenger Door Map Pocket/Courtesy Lamp harness connector.

      Is the resistance below 2.0 Ohms?

      Yes 

      • Replace the Passenger Door Ambient Lamp Assembly in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Repair the open in the (M36) Passenger Door Lighting Return circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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