Stop Light Switch Circuit

VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE PROXIMITY NOTIFICATION SYSTEM: Stop Light Switch Circuit
- Stop Light Switch Circuit

DESCRIPTION

The vehicle approaching speaker controller detects brake operation by monitoring the signal from the stop light control ECU assembly. Vehicle approaching speaker operation is enabled when the vehicle approaching speaker controller receives a signal from the stop light control ECU assembly indicating that the brakes are not applied.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK STOP LIGHT (OPERATION)

(a) Confirm that the stop lights illuminate correctly.

OK:

Stop light operation is normal

NG -- GO TO LIGHTING SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - STOP LIGHT CONTROL ECU ASSEMBLY)

(a) Disconnect the H138 vehicle approaching speaker controller connector.

(b) Disconnect the A27 stop light control ECU assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures