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 IF THE DTC IS ACTIVE
1. Turn the ignition on, headlamps on.
2. With the scan tool, read Automatic Headlamp Leveling Module (AHLM) DTCs.
  Is this DTC active?
  
  Yes
  - Go To 2
  No
  - Go To 5
CHECK THE (L963) REAR HEADLAMP LEVELING SENSOR SIGNAL CIRCUIT
1. Turn the ignition off.
2. Disconnect the Rear Headlamp Level Sensor harness connector.
3. Turn the ignition on, headlamps on.
4. Measure the voltage of the (L963) Rear Headlamp Leveling Sensor Signal circuit in the Rear Headlamp Level Sensor harness connector.
  Is the voltage above 5.5 volts?
  
  Yes
  - Go To 3
  No
  - Go To 4
CHECK THE (L963) REAR HEADLAMP LEVELING SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the AHLM harness connector.
3. Turn the ignition on, headlamps on.
4. Measure the voltage of the (L963) Rear Headlamp Leveling Sensor Signal circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (L963) Rear Headlamp Leveling Sensor Signal circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE REAR HEADLAMP LEVELING SENSOR
1. Turn the ignition off.
2. Replace the Rear Headlamp Leveling Sensor in accordance with the Service Information.
3. Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  Does this DTC reset after performing the Body Verification Test?
  
  Yes
  - Replace the Automatic Headlamp Leveling Module (AHLM) in accordance with the Service Information. Refer to MODULE, AUTOMATIC HEADLAMP LEVELING, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test Complete
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this module. Wiggle the wiring and connectors while checking for shorted and open circuits.
3. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Check Service Bulletins for any possible causes that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test complete.