1. Check operation of the SLIP indicator light. PREPARATION:
c. Select the ACTIVE TEST mode on the TOYOTA hand-held tester.
Check that "ON" and "OFF" of the SLIP indicator light can be shown on the combination meter with the TOYOTA hand-held tester.
2. 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
3. Check SLIP indicator light.
See COMBINATION METER .
NG: Repair or replace combination meter. OK: GO TO NEXT STEP
4. Check for open and short circuit in harness and connector between SKID CONTROL ECU AND SLIP INDICATOR LIGHT .
NG: Repair or replace harness or connector.
OK: Check and replace skid control ECU.
VSC OFF*1 (TRAC OFF)*2 INDICATOR LIGHT, VSC OFF*1 (TRAC OFF)*2 SWITCH CIRCUIT
*1: Only for 4WD *2: Only for 2WD CIRCUIT DESCRIPTION
This is the VSC(TRAC) control main switch. When the VSC OFF (TRAC OFF) switch is pushed on, VSC (TRAC) control goes off and the VSC OFF (TRAC OFF) indicator lights up. Turn the ignition switch OFF,
2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia
VSC(TRAC) control surely comes on when the ignition switch turns ON next time.
Pressing the VSC OFF switch in 2WD setting does not deactivate VSC control. *1 WIRING DIAGRAM
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