Checking Components and Wiring

Checking Components And Wiring







- Ignition on

Activate readout of brake pedal position (via CAN) and position of the brake light switch.

Check that the value for brake pedal position at unaffected brake pedal is approx. 0 % and when the pedal is fully pressed down approx. 55 % when the engine is running.

Also check that the brake light switch is activated when the pedal is pressed down.

Check the connector for the brake pedal position sensor and the brake light switch for contact resistance, loose connections and oxidation.

Check the ground cable between brake light switch and engine control module (ECM) #B41 (#C41) for short-circuit to ground, as well as open circuit.

HINT: The brake pedal position sensor's signal is sent to engine control module (ECM) from brake control module (BCM) via CAN.

Remedy as necessary.

Other Information
- Connecting the breakout box
- Signal specification, engine control module (ECM)
- Pedal position sensor, replacing
- Stop lamp switch, replacing
- Checking wiring and terminals

Continue: Refer to Verification. Verification