Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
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 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 .
CHECK FOR A INCORRECT LEFT FRONT TURN SIGNAL BULB
1. Turn the ignition off.
2. Disconnect the Left Front Lamp Assembly C2 harness connector.
3. Inspect the Left Front Turn Lamp Bulb part number for a correct part number.
  Is the Left Front Turn Lamp Bulb part number correct?
  
  Yes
  - Go To 3
  No
  - Replace the Left Front Turn Lamp Bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK FOR A INCORRECT LEFT REAR TURN SIGNAL BULB
1. Disconnect the Left Tail Lamp Assembly harness connector.
2. Inspect the Left Rear Turn Lamp Bulb part number for a correct part number.
  Is the Left Rear Turn Lamp Bulb part number correct?
  
  Yes
  - Go To 4
  No
  - Replace the Left Rear Turn Lamp Bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BCM FOR CORRECT OPERATION
1. Turn the ignition off.
2. Connect a 12-volt test light between ground and the (L61) Left Front Turn Lamp Driver circuit at the Left Front Lamp Assembly C2 harness connector.
3. Turn the ignition on.
4. Activate the Left Turn Signal.
5. Repeat these steps for the (L63) Left Rear Turn Lamp Driver circuit at the Left Tail Lamp Assembly harness connector.
  Does the test light illuminate brightly for both connections?
  
  Yes
  - Replace the faulty Left Turn Signal Bulb in accordance with the Service Information. Refer to UNIT, FRONT LAMP, LOWER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the BCM in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .