Conditions for Setting the DTC
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
To set B2618, the following conditions must be present:
- Courtesy lamps ON.
- The courtesy lamp relay coil control circuit is open or shorted to ground.
- The above conditions must be met for 0.5 seconds.