VSC Warning Light does not Come ON

DESCRIPTION

The skid control ECU is connected to the combination meter via CAN and multiplex communications.
If the ECU stores DTC, the master caution indicator light will come on and the DTC will be displayed on the multi information display in the combination meter.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

When replacing the brake actuator assembly, perform zero point calibration (Click here).

1. CHECK CAN COMMUNICATION SYSTEM

1. Check if the CAN communication system DTC is output (Click here for LHD, or Click here for RHD).
   

   Result:

   Condition	Proceed to
   DTC is not output	A
   DTC is output	B

B	INSPECT CAN COMMUNICATION SYSTEM

A

2. CHECK MULTIPLEX COMMUNICATION SYSTEM

1. Check if the multiplex communication system DTC is output (Click here).
   

   Result:

   Condition	Proceed to
   DTC is not output	A
   DTC is output	B

B	INSPECT MULTIPLEX COMMUNICATION SYSTEM

A

3. CHECK VSC WARNING LIGHT

1. Connect the intelligent tester to the DLC3.

2. Start the engine.

3. Select the "VSC Warning Lamp" in the Active Test and operate the VSC warning (multi information display and master caution indicator light) light by the intelligent tester.

   ABS / VSC: 

   Item (Display)	Vehicle Condition / Test Details	Diagnostic Note
   VSC Warning Lamp	Turn VSC warning (multi information display and master caution indicator light) light ON / OFF	Observe combination meter

4. Check that "ON" and "OFF" of the VSC warning (multi information display and master caution indicator light) light are indicated on the combination meter when using the intelligent tester.

   OK:

   The VSC warning (multi information display and master caution indicator light) light turns on or off in accordance with the intelligent tester.
   

   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 (Click here).

OK	REPLACE BRAKE ACTUATOR ASSEMBLY

NG

4. INSPECT COMBINATION METER ASSEMBLY

1. Turn the engine switch off.

2. Perform Active Test of the combination meter (meter CPU) using the intelligent tester (Click here).

   OK:

   The VSC warning (multi information display and master caution indicator light) light turns on or off in accordance with the intelligent tester.
   

   HINT:

   If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (Click here).

NG	REPLACE COMBINATION METER ASSEMBLY

OK
REPLACE BRAKE ACTUATOR ASSEMBLY