Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Start the inspection from step 1 in case of using the TOYOTA hand-held tester and start from step 2) in case of not using the TOYOTA hand-held tester.

Check Operation Of The VSC OFF (TRAC OFF) Indicator Light .
Preparation :
1. Connect the TOYOTA hand-held tester to the DLC3.
2. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on the TOYOTA hand-held tester.
CHECK : that "ON" and "OFF" of the VSC OFF (TRAC OFF) indicator light can be shown on the combination meter with the TOYOTA hand-held tester.
1. NG : Go to step 4.
2. OK : Go to step 2.
Check VSC OFF (TRAC OFF) Switch.
Preparation : Remove COMBINATION METER .

Check : measure the resistance between terminals CSW and GND of the VSC OFF (TRAC OFF) switch when the VSC OFF (TRAC OFF) switch is ON and OFF.

OK : For specifications see Fig 1.

Fig 1: VSC & TRAC OFF Continuity Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Locating VSC & TRAC OFF Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG : Replace VSC OFF (TRAC OFF) switch.
2. OK : Go to step 3.
Check For Open And Short Circuit In Harness And Connector Between Terminal CSW Of Skid Control ECU And VSC OFF (TRAC OFF) Switch And Body Ground. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .
1. NG : Repair or replace harness or connector.
2. OK , go to step 4.
Check VSC OFF (TRAC OFF) Indicator Light.
PROBLEM SYMPTOMS .
1. NG : Repair or replace combination meter.
2. OK : Go to next step.
Check For Open And Short Circuit In Harness And Connector Between Terminal WT Of Skid Control ECU And VSC Off (Trac Off) Indicator Light. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .
1. NG : Repair or replace harness or connector.
2. OK : Check and replace skid control ECU.