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.
3. Check that "ON" and "OFF" of the VSC warning light are indicated on the combination meter when using the hand-held tester.
   VEHICLE CONDITION / TEST DETAILS CHART
   
   

   Item	Vehicle Condition/Test Details	Diagnostic Note
   VSC WARN LIGHT	Turns VSC warning light ON / OFF	Observe combination meter

   OK: Turn the VSC warning light 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.
2. Ground the terminal VSCW of skid control ECU.
3. Turn the ignition switch to the ON position.
4. Check that the VSC warning light.

   OK: Turn the light ON or OFF in accordance with the connecting condition of terminal VSCW and body ground. 

   Fig 1: Checking VSC Warning Light

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: CHECK AND REPAIR VSC WARNING LIGHT CIRCUIT (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
2. OK: GO TO NEXT STEP. 

1. Disconnect the skid control ECU connector and combination meter connector.
2. Measure the resistance according to the value (s) in the table below.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   C12-7-S27-36 (VSCW)	Below 1 Ω

3. Measure the resistance according to the value (s) in the table below.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   S27-36 (VSCW) - Body ground	10 kΩ or higher

   Fig 2: Disconnecting Skid Control ECU Connector And Combination Meter Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  )