Diagnostic Test

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 THE (L61) LEFT FRONT TURN SIGNAL DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Left Front Lamp Assembly C2 harness connector.
3. Disconnect the BCM C1 harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (L61) Left Front Turn Signal Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L61) Left Front Turn Signal Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (L63) LEFT REAR TURN SIGNAL DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Left Tail Lamp Assembly harness connector.
3. Disconnect the BCM C3 harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (L63) Left Rear Turn Signal Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L63) Left Rear Turn Signal Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the BCM in accordance with the service information. Refer to REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .