VSC OFF Indicator Light does not Come ON

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): VSC OFF Indicator Light does not Come ON

VSC OFF Indicator Light does not Come ON

DESCRIPTION

Operation of the VSC OFF switch changes the vehicle from normal mode to TRAC OFF mode (AUTO LSD mode) to VSC OFF mode. During normal mode, pressing the VSC OFF switch for a short amount of time changes vehicle to TRAC OFF mode. When the vehicle is stopped, pressing the VSC OFF switch for 3 seconds or more changes the vehicle to VSC OFF mode. During VSC OFF mode, the combination meter's VSC OFF indicator light illuminate, and VSC, TRAC and AUTO LSD operation is disabled.

WIRING DIAGRAM






INSPECTION PROCEDURE
NOTICE: When replacing the master cylinder solenoid, perform zero point calibration Vehicle Stability Control System (for Hydraulic Brake Booster).

PROCEDURE

1. CHECK VSC OFF INDICATOR LIGHT




(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Ground terminal VSCW of the skid control ECU.
(d) Check the VSC OFF indicator light.
OK:





(e) Turn the ignition switch to OFF.
(f) Reconnect the skid control ECU connector.
OK -- REPLACE MASTER CYLINDER SOLENOID
NG -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)




(a) Disconnect the skid control ECU connector.
(b) Disconnect the combination meter connector.
(c) Measure the resistance.
Standard:





(d) Reconnect the combination meter connector.
(e) Reconnect the skid control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT COMBINATION METER ASSEMBLY
(a) Check the combination meter system Problem Symptoms Table.
OK:
Combination meter is normal.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Continue to next step.

4. INSPECT SKID CONTROL ECU




(a) Disconnect the skid control ECU connector.
(b) Ground terminal CSW of the skid control ECU.
Standard:





(c) Reconnect the skid control ECU connector.
OK -- REPLACE MASTER CYLINDER SOLENOID
NG -- Continue to next step.

5. INSPECT VSC OFF SWITCH




(a) Remove the VSC OFF switch.
(b) Disconnect the VSC OFF switch connector.
(c) Measure the resistance.
Standard:





(d) Reconnect the VSC OFF switch connector.
(e) Reinstall the VSC OFF switch.
NG -- REPLACE VSC OFF SWITCH
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (VSC OFF SWITCH CIRCUIT)




(a) Disconnect the skid control ECU connector and the VSC OFF switch connector.
(b) Measure the resistance.
Standard:





(c) Reconnect the skid control ECU connector and the VSC OFF switch connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MASTER CYLINDER SOLENOID