Lexus IS250 IS220d GSE20 ALE20 - BRAKE CONTROL

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TS of DLC3)

CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)

CHECK HARNESS AND CONNECTOR (TS of DLC3 - BODY GROUND)

VEHICLE STABILITY CONTROL SYSTEM (w/ VDIM) - TS and CG Terminal Circuit

DESCRIPTION

In the Test Mode (signal check), a malfunction of the speed sensor that cannot be detected when the vehicle is stopped is detected while driving.


Transition to the sensor check mode can be performed by connecting terminals TS and CG of the DLC3 and turning the engine switch from off to on (IG).


WIRING DIAGRAM

Vehicle Stability Control System (W/ Vdim) - Ts And Cg Terminal Circuit. BRAKE CONTROL. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

  • NOTICE:
  • When replacing the skid control ECU, perform zero point calibration and store system information .
1.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TS of DLC3)
Vehicle Stability Control System (W/ Vdim) - Ts And Cg Terminal Circuit. BRAKE CONTROL. Lexus IS250 IS220d GSE20 ALE20

Disconnect the skid control ECU connector.

Measure the resistance according to the value(s) in the table below.

  • Standard resistance:
  • Tester ConnectionConditionSpecified Condition
    J77-13 (TS) - J21-12 (TS)AlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
2.CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)
Vehicle Stability Control System (W/ Vdim) - Ts And Cg Terminal Circuit. BRAKE CONTROL. Lexus IS250 IS220d GSE20 ALE20

Measure the resistance according to the value(s) in the table below.

  • Standard resistance:
  • Tester ConnectionConditionSpecified Condition
    J21-4 (CG) - Body groundAlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
3.CHECK HARNESS AND CONNECTOR (TS of DLC3 - BODY GROUND)
Vehicle Stability Control System (W/ Vdim) - Ts And Cg Terminal Circuit. BRAKE CONTROL. Lexus IS250 IS220d GSE20 ALE20

Measure the resistance according to the value(s) in the table below.

  • Standard resistance:
  • Tester ConnectionConditionSpecified Condition
    J21-12 (TS) - Body groundAlways10 kΩ or higher
  • 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 .
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE SKID CONTROL ECU