DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
CHECK MULTIPLEX COMMUNICATION SYSTEM
CHECK VSC WARNING LIGHT
INSPECT COMBINATION METER ASSEMBLY
VEHICLE STABILITY CONTROL SYSTEM (w/o VDIM) - 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 a 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
- When replacing the brake actuator assembly, perform zero point calibration .
| 1.CHECK CAN COMMUNICATION SYSTEM |
Check if the CAN communication system DTC is output ( for LHD (gasoline), for RHD (gasoline), for LHD (diesel), or for RHD (diesel)).
- Result:
| Condition | Proceed to |
| DTC is not output | A |
| DTC is output | B |
| | INSPECT CAN COMMUNICATION SYSTEM |
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| 2.CHECK MULTIPLEX COMMUNICATION SYSTEM |
Check if the multiplex communication system DTC is output .
- Result:
| Condition | Proceed to |
| DTC is not output | A |
| DTC is output | B |
| | INSPECT MULTIPLEX COMMUNICATION SYSTEM |
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| 3.CHECK VSC WARNING LIGHT |
Connect the intelligent tester to the DLC3.
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 |
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.
- 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 .
| | REPLACE BRAKE ACTUATOR ASSEMBLY |
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| 4.INSPECT COMBINATION METER ASSEMBLY |
Turn the engine switch off.
Perform Active Test of the combination meter (meter CPU) 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.
- If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step .
| | REPLACE COMBINATION METER ASSEMBLY |
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| OK | |
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| REPLACE BRAKE ACTUATOR ASSEMBLY |
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LEXUS IS250, IS220d / GSE20 ALE20