Inspection Procedure

WHEN USING HAND-HELD TESTER: 

1. Connect the hand-held tester to the DLC3 and start the engine.
2. Select the item "VSC WARN LIGHT" in the ACTIVE TEST and operate the VSC warning light on the hand-held tester display.
   Fig 1: VSC Warning Light Condition Chart

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3. Check that "ON" and "OFF" of the VSC warning light are shown on the combination meter with the hand-held tester.

Standard: 

1. The VSC warning light is turned ON or OFF in accordance with the hand-held tester. 

WHEN NOT USING HAND-HELD TESTER: 

1. Turn the ignition switch off and disconnect the connector from the skid control ECU.
   Fig 2: Disconnecting Connector From Skid Control ECU Comtrol

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Ground terminal VSCW of skid control ECU.
3. Turn the ignition switch to the ON position.
4. Check that the VSC warning light goes off.

Standard: 

The light is turned ON or OFF in accordance with the connecting condition of terminals GND and VSCW. 

OK: REPAIR OR REPLACE COMBINATION METE ASSY 

NG: Go to next step. 

1. Disconnect the skid control ECU connector S1 and combination meter connector C8.
   Fig 3: Disconnecting Skid Control ECU & Combination Meter Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 4 .

   Standard 

   Fig 4: Measuring Resistance Between VSCW & Combination Meter Specifications Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 5 .

   Standard 

   Fig 5: Measuring Resistance Between VSCW & Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  )