NOTE Start the inspection from step in the case of using the Toyota handheld tester and start from step in the case of not using the Toyota handheld tester

1. Check operation of the SLIP indicator light. PREPARATION:

a. Connect the TOYOTA hand-held tester to the DLC3.

b. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON.

c. Select the ACTIVE TEST mode on the TOYOTA hand-held tester.

CHECK:

Check that "ON" and "OFF" of the SLIP indicator light can be shown on the combination meter with the TOYOTA hand-held tester.

Check that the SLIP indicator light is ON for 3 seconds immediately after ignition switch is turned ON.

OK: No problem. NG: Go to next step. Check SLIP indicator light.

See combination meter troubleshooting PROBLEM SYMPTOMS TABLE .

NG: Repair or replace combination meter. OK: Go to next step.

4. Check for open and short circuit in harness and connector between translate ECU and SLIP indicator light (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

NG: Repair or replace harness or connector.

OK: Check and replace translate ECU.

VSC OFF (TRAC OFF)*2 INDICATOR LIGHT, CENTER DIFF. LOCK ** (TRAC OFF)*2 SWITCH CIRCUIT

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia

CIRCUIT DESCRIPTION

This is the VSC (TRAC) control main switch. When the center diff. lock (TRAC OFF) switch is pushed on, VSC(TRAC) control goes off and the VSC OFF (TRAC OFF) indicator comes on. Turn the ignition switch OFF, and check that VSC (TRAC) control surely comes on for approximately 3 sec. when turn the ignition switch ON again.

Pressing the center diff. lock switch in 2WD setting does not deactivate VSC control. *1 WIRING DIAGRAM

Fig. 111: Wiring Diagram - VSC OFF*1 (TRAC Off)*2 Indicator Light, Center Diff. Lock*1 (TRAC OFF) Switch 6

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE

Fig. 111: Wiring Diagram - VSC OFF*1 (TRAC Off)*2 Indicator Light, Center Diff. Lock*1 (TRAC OFF) Switch 6

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE

Do It Yourself Car Diagnosis

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