B13AA-13

B13AA-13-LEFT/RIGHT SIDE MARKER LAMPS - CIRCUIT OPEN

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Body Control Module (BCM) receives the input from the Left Multi-function Switch requesting park lamp illumination. The BCM provides a voltage output through the side marker control circuit. The control circuit connects to the Park Lamps. A ground path for the lamps is present through the harness to the body sheet metal. For additional information on the Park Lamps operation, Exterior Lamps - Operation.

- When Monitored:
With the park lamps active.

- Set Condition:
When the Body Control Module (BCM) detects a high condition on the (L17) Park Lamps Driver circuit.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the Park Lamps on.
4. 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. Body Verification Test.

2. CHECK THE SIDE MARKER LAMPS AND BULBS

NOTE: This DTC will set if all the Side Marker Bulbs are disconnected or bunt out.

1. Inspect the harness connectors at the Side Marker Lamps for correct connection.
2. Inspect the Side Marker Lamps for burnt out or damaged bulbs.

Are any concerns present?

Yes

- Replace the Side Marker Bulbs or Lamps as necessary. Side Marker Lamp - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (L17) PARK LAMPS DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS
1. Turn the ignition off.
2. Disconnect the Left Right Side Marker Lamp harness connector.
3. Disconnect the BCM C2 harness connector.
4. Measure the resistance of the (L17) Park Lamps Driver circuit between the Left Right Side Marker Lamp harness connector and the BCM C2 harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Replace the BCM. Body Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open in the (L17) Park Lamps Driver circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.