Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. 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. Turn the Daytime Running Lamps (DRL) on.
3. With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
  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. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (L58) LEFT DRL LAMP DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS
1. Turn the ignition off.
2. Disconnect the BCM D harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (L58) Left DRL Lamp Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L58) Left DRL Lamp Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (L58) LEFT DRL LAMP DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS
1. Turn the ignition off.
2. Measure the resistance of the (L58) Left DRL Lamp Driver circuit between the Left Front Lamp Assembly harness connector and the BCM D harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the open in the (L58) Left DRL Lamp Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BCM FOR CORRECT OPERATION
1. Reconnect the BCM D harness connector.
2. Turn the ignition on.
3. Using a 12-volt test light connected to ground, check the (L58) Left DRL Lamp Driver circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Left Front Lamp Assembly in accordance with the Service information. Refer to UNIT, FRONT LAMP, STANDARD PROCEDURE .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .