Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. 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.