C1249

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1249/49: Open in Stop Light Switch Circuit

DTC C1249/49 - Open in Stop Light Switch Circuit

DESCRIPTION





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK STOP LIGHT SWITCH
(a) Check that the stop light turns on when the brake pedal is depressed and turns off when the brake pedal is released.
OK:






NG -- INSPECT STOP LIGHT SWITCH
OK -- Continue to next step.
2. CHECK WIRE HARNESS (SKID CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ECU)




(a) Disconnect the S7 and D4 ECU connectors.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






OK -- REPAIR OR REPLACE HARNESS AND CONNECTOR
NG -- REPLACE SKID CONTROL ECU
3. INSPECT STOP LIGHT SWITCH




(a) Disconnect the switch connector.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE STOP LIGHT SWITCH
OK -- Continue to next step.
4. CHECK WIRE HARNESS (STOP LIGHT SWITCH - DRIVER SIDE JUNCTION BLOCK ECU AND BATTERY)




(a) Disconnect the D2 ECU connector.
(b) Disconnect the S10 switch connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





(d) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
5. CHECK WIRE HARNESS (SKID CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ECU)




(a) Disconnect the S7 and D4 ECU connectors.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






OK -- REPAIR OR REPLACE HARNESS AND CONNECTOR
NG -- REPLACE SKID CONTROL ECU