Diagnostic Notes

DESCRIPTION
Code 11 is caused by the stoplight switch always being closed prior to the vehicle moving. If the stoplight switch remains closed when the vehicle begins to move, the REAR ABS warning light will turn on at approximately 16 mph. Code 11 will not be latched in the control antilock electronic control module's memory until the speed of the vehicle exceeds 37 mph for at least 10 seconds. If the vehicle does not exceed 37 mph for at least 10 seconds, then the REAR ABS warning light will turn on but the antilock electronic control module will not latch a code. Code 11 can be caused by a driver resting his foot on the brake pedal with just enough pressure to close the stoplight switch, while driving at least 37 mph for a minimum of ten seconds. When this occurs, a Code 11 will be latched by the antilock electronic control module.

POSSIBLE CONTRIBUTING BASE BRAKE COMPONENT/VEHICLE WIRING CONCERNS
- Terminal backout in the antilock electronic control module harness connector at Pin 11
- Missing (burned-out) stoplamps. All stoplamps must be missing or burned out to cause a Code 11
- An intermittent/continuous open in Circuit 511 (LG). This open would be between antilock electronic control module connector Pin 11 and the stoplight switch
- Worn or damaged stoplight switch