Stop Lamp Switch Signal Circuit

STOP LAMP SWITCH SIGNAL CIRCUIT

Description

The Stop lamp switch outputs the stop lamp switch signal to the VSP control unit.


Component Function Check


1. CHECK STOP LAMP SWITCH INPUT SIGNAL

1.Connect the CONSULT.
2.Select the "DATA MONITOR" for the "VSP" and check the "BRAKE SW" monitor value.





- INSPECTION END


Diagnosis Procedure


1. STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.Power switch OFF.
2.Disconnect stop lamp switch connector.
3.Power switch ON.
4.Check voltage between stop lamp switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Check harness between fuse and stop lamp switch.

2. CHECK STOP LAMP SWITCH SIGNAL CIRCUIT

1.Power switch OFF.
2.Disconnect VSP control unit connector.
3.Check continuity between VSP control unit harness connector and stop lamp switch harness connector.





4.Check continuity between VSP control unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair the harnesses or connector.

3. CHECK STOP LAMP SWITCH INPUT SIGNAL

1.Connect VSP control unit and stop lamp switch connector.
2.Power switch ON.
3.Check voltage between VSP control unit harness connector and ground.





Is the inspection result normal?
YES- Replace the VSP control unit. Refer to "Removal and Installation" Approaching Vehicle Sound For Pedestrians (VSP) Control Unit.
NO- Refer to "Component Inspection" .


Component Inspection


1. CHECK STOP LAMP SWITCH

1.Power switch OFF.
2.Disconnect stop lamp switch connector.
3.Check continuity between following terminals of the stop lamp switch.





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