Diagnostic Test

WARNING: This page is about a different car, the 2021 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Start the Engine.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC 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 appropriate SYSTEM 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 BODY VERIFICATION TEST .
(D412) LIN BUS CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Adaptive Front Lighting System (AFLS) Module harness connector.
3. Disconnect the Both Front Headlamp Assembly harness connectors.
4. Start the Engine.
5. Measure the voltage of the (D412) LIN Bus circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (D412) LIN Bus circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
(D412) LIN BUS CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Measure the resistance between ground and the (D412) LIN Bus circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (D412) LIN Bus circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
(D412) LIN BUS CIRCUIT OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (D412) LIN Bus circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Right Front Lamp Assembly in accordance with the Service Information. Refer to UNIT, FRONT LAMP, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (D412) LIN Bus circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .