Vehicle Stability Control System (W/O Vdim) - How To Proceed With Troubleshooting

Lexus IS250 IS220d GSE20 ALE20 - BRAKE CONTROL


VEHICLE STABILITY CONTROL SYSTEM (w/o VDIM) - HOW TO PROCEED WITH TROUBLESHOOTING

  • HINT:
The vehicle stability control system troubleshooting procedures are based on the premise that the multiplex communication system is operating normally. Check the multiplex communication system first before troubleshooting the vehicle stability control system.
The intelligent tester can be used at steps 3, 7, and 10.

1.VEHICLE BROUGHT TO WORKSHOP
NEXT
2.CUSTOMER PROBLEM ANALYSIS

Interview and confirm the trouble .

NEXT
3.CHECK DTC AND FREEZE FRAME DATA

Check and record a DTC and Freeze Frame Data.

Clear the DTC and Freeze Frame Data .

Reconfirm the DTC.


Reconfirm the DTC based on the recorded DTC and Freeze Frame Data .

  • HINT:
  • If any of the DTC U0100/65, U0123/62, U0124/95, and U0126/63 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit .
  • Result:
  • ConditionProceed to
    DTC is outputA
    DTC is not output (Problem symptom does not occur)B
    DTC is not output (Problem symptom occurs)C
B.
GO TO STEP 5
C.
GO TO STEP 6
A
4.DIAGNOSTIC TROUBLE CODE CHART
NEXT
GO TO STEP 7
5.SYMPTOM SIMULATION
NEXT
6.PROBLEM SYMPTOMS TABLE
NEXT
7.CIRCUIT INSPECTION
NEXT
8.IDENTIFICATION OF PROBLEM
NEXT
9.REPAIR OR REPLACEMENT
NEXT
10.CONFIRMATION TEST
NEXT
END