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

1. Check operation of the VSC warning 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 VSC TRAC warning light can be shown on the combination meter with the TOYOTA hand-held tester.

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

OK: Check and replace skid control ECU. NG: GO TO NEXT STEP

2. Is DTC output?

YES: Repair circuit indicated by the output code. NO: GO TO NEXT STEP

3. Check for open and short circuit in harness and connector between SKID CONTROL ECU AND VSC TRAC WARNING LIGHT .

NG: Repair or replace harness or connector.

OK: GO TO NEXT STEP

4. Check VSC TRAC warning light.

See COMBINATION METER TROUBLESHOOTING .

NG: Repair bulb or combination meter assembly (See COMBINATION METER ). OK: Check and replace skid control ECU.

BRAKE WARNING LIGHT CIRCUIT

CIRCUIT DESCRIPTION

The BRAKE warning light lights up when the brake fluid is insufficient, the parking brake is applied or the EBD is defective.

WIRING DIAGRAM

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

2002 Sequoia Lights Diagram
Fig. 103: BRAKE Warning Light Circuit Diagram INSPECTION PROCEDURE

1. Check parking brake switch circuit (See HIGHLANDER & SEQUOIA ).

NG: Repair or replace parking brake switch circuit. OK: GO TO NEXT STEP

2. Check BRAKE FLUID LEVEL SWITCH .

NG: Repair or replace brake fluid level warning switch circuit. OK: GO TO NEXT STEP

3. Is DTC output?

Check DTC on PRE-CHECK .

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

YES: Repair circuit indicated by the output code. NO: GO TO NEXT STEP 4. Check BRAKE warning light.

See combination meter troubleshooting on BRAKE WARNING LIGHT

NG: Repair or replace combination meter. OK: Check and replace skid control ECU.

SLIP INDICATOR LIGHT CIRCUIT

CIRCUIT DESCRIPTION

The SLIP indicator light blinks during VSC & TRAC operation. WIRING DIAGRAM

Toyota Trac Brake
Fig. 104: SLIP Indicator Light Circuit Diagram INSPECTION PROCEDURE

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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Responses

  • ester
    What does the vsc warning light look like on highlander hybrid?
    6 years ago
  • heikki
    Where do i find the brake fluid container in a toyota highlander 2004 model engine?
    5 years ago

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