Inspection Procedure

CHECK AUTO LSD INDICATOR LIGHT

Disconnect the skid control ECU connector.
Turn the ignition switch to the ON position.
Ground terminal INFR of the skid control ECU.

Check the AUTO LSD indicator light.

AUTO LSD INDICATOR LIGHT CONDITION CHART

INFR - GND Condition	Illumination Condition
Connecting	ON
Disconnecting	OFF

Turn the ignition switch to OFF.
Reconnect the skid control ECU connector.

OK: REPLACE MASTER CYLINDER SOLENOID

Fig 1: Identifying Skid Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to Next Step

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)

Disconnect the skid control ECU connector.
Disconnect the combination meter connector.

Measure the resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
S1-15 (INFR) - C9-35	Below 1 Ω
S1-15 (INFR) - Body ground	10 kΩ or higher

Reconnect the combination meter connector.
Reconnect the skid control ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying Combination Meter & Skid Control ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

INSPECT COMBINATION METER ASSEMBLY
1. Check the combination meter system. (see COMBINATION METER ).
  OK: Combination meter is normal.
NG: REPLACE COMBINATION METER ASSEMBLY

OK: Go to Next Step

INSPECT SKID CONTROL ECU (CSW TERMINAL)

Disconnect the skid control ECU connector.

Ground terminal CSW of the skid control ECU.

Standard

RESISTANCE SPECIFICATION

Tester connection	Condition	Specified Condition
S1-43 (CSW) - Body ground	VSC OFF switch not pushed in	10 kΩ or higher

Reconnect the skid control ECU connector.

OK: REPLACE MASTER CYLINDER SOLENOID

Fig 3: Identifying Skid Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to Next Step

INSPECT VSC OFF SWITCH

Remove the VSC OFF switch.
Disconnect the VSC OFF switch connector.

Measure resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
T17-3-T17-4	Released	10 kΩ or higher
T17-3-T17-4	Pushed in	Below 1 Ω

Reconnect the VSC OFF switch connector.
Reinstall the VSC OFF switch.

Fig 4: Inspecting VSC Off Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE VSC OFF SWITCH

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (VSC OFF SWITCH CIRCUIT)

Disconnect the skid control ECU connector and the VSC OFF switch connector.

Measure the resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
S1-43 (CSW) - T17-3	Below 1 Ω
S1-43 (CSW) - Body ground	10 kΩ or higher
T17-4 - Body ground	Below 1 Ω

Reconnect the skid control ECU connector and the VSC OFF switch connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 5: Identifying Skid Control ECU & VSC Off Switch Connector

OK: REPLACE MASTER CYLINDER SOLENOID

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)

Disconnect the skid control ECU connector.
Disconnect the combination meter connector.

Measure the resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
S1-15 (INFR) - C9-35	Below 1 Ω
S1-15 (INFR) - Body ground	10 kΩ or higher

Reconnect the combination meter connector.
Reconnect the skid control ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 6: Identifying Combination Meter & Skid Control ECU Connectors

OK: Go to Next Step

INSPECT COMBINATION METER ASSEMBLY
1. Check the combination meter system. (See COMBINATION METER ).
  OK: Combination meter is normal.
NG: REPLACE COMBINATION METER ASSEMBLY

OK: CHECK FOR INTERMITTENT PROBLEMS