Brake Light Switch: Testing and Inspection

STOP LAMP SWITCH

Description

The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the RAS control unit.


Component Function Check


1. CHECK STOP LAMP SWITCH OPERATION

Operate the brake pedal. Then check that the stop lamp in the rear combination lamp turns ON/OFF correctly.





Is the inspection result normal?
YES- INSPECTION END
NO- Proceed to diagnosis procedure. .


Diagnosis Procedure


1. CHECK CONNECTOR

1.Turn the ignition switch OFF.
2.Disconnect RAS control unit harness connector.
3.Disconnect stop lamp switch harness connector.
4.Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace or repair damaged parts.

2. CHECK STOP LAMP SWITCH

Check stop lamp switch. .
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace stop lamp switch.

3. CHECK STOP LAMP SWITCH CIRCUIT

1.Turn the ignition switch OFF.
2.Check the voltage between RAS control unit harness connector and ground.





Is the inspection result normal?
YES- INSPECTION END
NO- Repair or replace damaged parts.


Component Inspection


1. CHECK STOP LAMP SWITCH

1.Turn the ignition switch OFF.
2.Disconnect stop lamp switch connector.
3.Check the continuity between stop lamp switch connector terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace stop lamp switch. Exploded View.


Special Repair Requirement


BEFORE REPLACING RAS CONTROL UNIT

- Record the self-diagnosis results (history).

CAUTION:
- Never erase the memory (history) of self-diagnosis results when replacing RAS control unit after diagnosis.
- Erase the memory of the self-diagnosis results (record) after printing out or recording all the values of "DATA MONITOR".