VSC Off Indicator Light Does Not Come On

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: VSC OFF Indicator Light does not Come ON

VSC OFF Indicator Light does not Come ON

DESCRIPTION

The skid control ECU is connected to the combination meter via the CAN and multiplex communication systems.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE:
When replacing the skid control ECU, perform zero point calibration and store system information Testing and Inspection.

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 MULTIPLEX COMMUNICATION SYSTEM
(a) Check if a multiplex communication system DTC is output Multiplex Communication System.
Result:






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

3. READ VALUE USING TECHSTREAM (VSC OFF SWITCH)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Select the Data List mode on the Techstream Data List / Active Test.

ABS/VSC/TRAC





(d) Using the Techstream, check the switch condition on the Techstream changes according to VSC OFF switch operation.
OK:
The Techstream display changes according to VSC OFF switch operation.
NG -- INSPECT VSC OFF SWITCH
OK -- Continue to next step.

4. INSPECT COMBINATION METER ASSEMBLY
(a) Turn the engine switch off.
(b) Perform the Active Test of the combination meter (meter CPU) using the Techstream Scan Tool Testing and Procedures.
(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 Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE SKID CONTROL ECU
5. INSPECT VSC OFF SWITCH
(a) Turn the engine switch off.




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






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

6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH)
(a) Disconnect the skid control ECU connector.




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





HINT: If troubleshooting has been carried out according to 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 SKID CONTROL ECU