AUTO LSD Indicator Light does not Come ON

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: AUTO LSD Indicator Light does not Come ON

AUTO LSD Indicator Light does not Come ON

DESCRIPTION

This is the AUTO LSD main switch circuit. When the AUTO LSD switch is pushed on, the AUTO LSD function is available and the AUTO LSD indicator light illuminates.
HINT: The AUTO LSD does not operate even if the AUTO LSD switch is pressed under the following conditions:
- TRAC or VSC system is faulty.
- Temperature inside the hydraulic brake booster increases and the AUTO LSD operation is suspended.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: When replacing the master cylinder solenoid, perform zero point calibration Programming and Relearning.

PROCEDURE

1. CHECK AUTO LSD INDICATOR LIGHT





(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to ON.
(c) Ground terminal INFR of the skid control ECU.
(d) Check the AUTO LSD indicator light.
OK:






NG -- CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)
OK -- REPLACE MASTER CYLINDER SOLENOID
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)





(a) Disconnect the skid control ECU connector.
(b) Disconnect the combination meter connector.
(c) Measure the resistance.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT COMBINATION METER ASSEMBLY
(a) Check the combination meter system Meter / Gauge System.
OK:
Combination meter is normal.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- CHECK FOR INTERMITTENT PROBLEMS