Checking the Control Module's Sensor Input

Checking Control Module's Sensor Input












- Turn the ignition switch to the ON position.
- Connect BOB (Break Out Box) between CRUISE control module and CRUISE control module female connector.






















- Connect test lamp 86 11 857 to pin 7 of BOB and a good grounding point.







- Depress the brake pedal.







- The test lamp should light.

Checking the Wiring Harness
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO - Checking the Brake Lights Switch

YES - Final Check