AUTO LSD Indicator Light Remains ON

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: AUTO LSD Indicator Light Remains ON

AUTO LSD Indicator Light Remains ON

DESCRIPTION

This is the auto LSD switch for 2WD. 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:
- The TRAC or VSC system is faulty.
- The temperature inside the hydraulic brake booster increases and the auto LSD operation is suspended.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM
(a) Check if the CAN communication system DTC is output Diagnosis System.

Result





OK:
The connector is securely connected.
B -- REPAIR CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. CHECK SKID CONTROL ECU CONNECTOR
(a) Check if the skid control ECU connector is securely connected.
OK:
The connector is securely connected.
NG -- CONNECTOR CORRECTLY
OK -- Continue to next step.
3. CHECK WIRE HARNESS (SKID CONTROL ECU - BODY GROUND)





(a) Disconnect the A19 ECU connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:






OK -- CHECK COMBINATION METER
NG -- Continue to next step.
4. INSPECT AUTO LSD SWITCH





(a) Remove the auto LSD switch.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE TRACTION CONTROL SWITCH
OK -- Continue to next step.
5. CHECK WIRE HARNESS (SKID CONTROL ECU - TRACTION CONTROL SWITCH)





(a) Disconnect the A19 ECU connector.
(b) Disconnect the E51 switch connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
6. CHECK COMBINATION METER
(a) Check the combination meter How To Proceed With Troubleshooting.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY