Stop Lamp Switch

STOP LAMP SWITCH

Description

The stop lamp switch, through the stop lamp relay, transmits the stop lamp switch signal (ON/OFF) to the ABS actuator and electric unit (control unit).


Component Function Check


1. CHECK DATA MONITOR

On "DATA MONITOR", select "STOP LAMP SW" and check the stop lamp switch signal.





Is the inspection result normal?
YES- Inspection End.
NO- Go to diagnosis procedure. Refer to "Diagnosis Procedure".


Diagnosis Procedure

Regarding Wiring Diagram information, ABS.

1. CHECK STOP LAMP SWITCH

Perform the stop lamp switch component inspection. Refer to "Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES- GO TO 2
NO- Replace stop lamp switch.

2. CHECK STOP LAMP RELAY-1

Perform the stop lamp relay-1 component inspection. Refer to "Component Inspection (Stop Lamp Relay)".
Is the inspection result normal?
YES- GO TO 3
NO- Replace stop lamp relay-1.

3. CHECK STOP LAMP SWITCH SIGNAL CIRCUIT

1.Connect stop lamp switch and stop lamp relay-1 connectors.
2.Disconnect ABS actuator and electric unit (control unit) connector.
3.Check voltage between ABS actuator and electric unit (control unit) connector E26 terminal 20 and ground.





Is the inspection result normal?
YES- Replace ABS actuator and electric unit (control unit). ABS.
NO- GO TO 4

4. CHECK STOP LAMP RELAY-1 COIL CIRCUIT

1.Disconnect stop lamp relay-1 connector.
2.Check voltage between stop lamp relay-1 connector E57 terminal 1 and ground.





Is the inspection result normal?
YES- GO TO 5
NO- Repair circuit between stop lamp switch and stop lamp relay or circuit between fuse block J/B and stop lamp switch.

5. CHECK STOP LAMP RELAY-1 SWITCH INPUT CIRCUIT

Check voltage between stop lamp relay-1 connector E57 terminal 5 and ground.






Is the inspection result normal?
YES- GO TO 6
NO- Repair circuit between fuse block J/B and stop lamp relay.

6. CHECK STOP LAMP RELAY-1 GROUND CIRCUIT

Check continuity between stop lamp relay-1 connector E57 terminal 2 and ground.





Is the inspection result normal?
YES- Repair circuit between stop lamp relay and ABS actuator and electric unit (control unit).
NO- Repair stop lamp relay ground circuit.


Component Inspection (Stop Lamp Switch)


1. CHECK STOP LAMP SWITCH

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





Is the inspection result normal?
YES- Inspection End.
NO- Replace stop lamp switch.


Component Inspection (Stop Lamp Relay)


1. CHECK STOP LAMP RELAY

1.Turn ignition switch OFF.
2.Disconnect stop lamp relay connector.
3.Apply battery voltage to stop lamp relay terminal 1 and ground to terminal 2.
4.Check continuity between stop lamp relay terminals 3 and 5.





Is the inspection result normal?
YES- Inspection End.
NO- Replace stop lamp relay.