B1015-19

B1015-19-RIGHT STOP LAMP - OVER CURRENT

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

Theory of Operation

The Body Control Module (BCM) receives a hardwired brake signal from the Stop Lamp Switch indicating that the Brake Pedal is applied. When this signal is received, the BCM provides a voltage output through the rear stop signal control circuit. For additional information on the Brake Lamp operation, Exterior Lamps - Operation.

- When Monitored:
With the Brake Pedal applied.

- Set Condition:
When the Body Control Module (BCM) detects greater than expected current draw on the (L54) Right Stop Lamp Driver circuit.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Apply the Brake Pedal.
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. ATTEMPT TO SET THE OPPOSITE DTC
1. Turn the ignition off.
2. Disconnect the Right Tail Lamp Assembly C1 harness connector.
3. Turn the ignition on.
4. Apply the Brake Pedal.
5. With the scan tool, read DTCs.

Does the scan tool display DTC: B1015-13-RIGHT STOP LAMP - CIRCUIT OPEN?

Yes

- Replace the Right Stop Lamp Bulb. Tail Stop Turn Lamp - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (L54) RIGHT STOP LAMP DRIVER CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM C2 harness connector.
3. Measure the resistance between ground and the (L54) Right Stop Lamp Driver circuit.

Is the resistance above 10k Ohms?

Yes

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

No

- Repair the short to ground in the (L54) Right Stop Lamp Driver circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.