VSC OFF Indicator Light Remains ON

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: VSC OFF Indicator Light Remains ON

VSC OFF Indicator Light Remains ON

DESCRIPTION

The skid control ECU is connected to the combination meter via CAN communication.
If the skid control ECU stores a DTC, the VSC OFF indicator light blinks in the combination meter.
Pressing the VSC OFF switch turns off traction control and pressing and holding this switch turns off traction and VSC controls. If VSC control turns off, the VSC OFF indicator light will come on.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: When replacing the brake actuator assembly, perform zero point calibration Programming and Relearning.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM
(a) Check if a CAN communication system DTC is output Diagnosis System.
Result:






B -- INSPECT CAN COMMUNICATION SYSTEM
A -- Continue to next step.

2. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED
(a) Check if the skid control ECU connector is securely connected.
OK:
The connector is securely connected.
NG -- CONNECT CONNECTOR TO ECU CORRECTLY
OK -- Continue to next step.

3. CHECK BATTERY
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
Result:






C -- CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2ZR-FE)
B -- CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2AZ-FE)
A -- Continue to next step.

4. INSPECT SKID CONTROL ECU (CSW TERMINAL)




(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- INSPECT VSC OFF SWITCH
OK -- Continue to next step.

5. INSPECT COMBINATION METER ASSEMBLY
(a) Reconnect the skid control ECU connector.
(b) Perform the Active Test of the combination meter (meter CPU) using the Techstream Meter / Gauge System.
(c) Check the combination meter.
OK:
The VSC OFF indicator light turns on or off in accordance with the Techstream operation.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Problem Symptoms Table.

NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY
6. INSPECT VSC OFF SWITCH




(a) Disconnect the VSC OFF switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE VSC OFF SWITCH
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH)




(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY