Circuit Description

Brakelight switch signal circuit is used to detect when brake pedal has been applied. Brakelight switch sends a signal to ECT ECU when brake pedal is applied. This prevents engine stalling while driving in lock-up condition when brakes are suddenly applied. DTC is set when brakelight switch signal does not turn off even once when vehicle is driven. Possible causes are:

• Short in brakelight switch signal circuit.
• Brakelight switch
• ECT ECU