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For Vehicles Equipped With (TRAC) & (VSC) System

WARNING: This page is about a different car, the 2002 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • When replacing, the steering angle sensor or ECU, or when adjusting the front wheel alignment or steering wheel center point in accordance with the removing and installing or replacing the suspension, axle, or steering parts, make sure to perform the steering angle sensor ZERO POINT CALIBRATION .
  • Do not remove or install the VSC related parts unless necessary. Otherwise, there is a possibility that the setting of the VSC to be affected.
  • When working on the VSC related operation, make sure to check that the preparations before and after work are completed according to the following instruction.
  • When using a 2-wheel drum tester such as a speedometer tester or chassis dynamometer, etc., or jacking up the front wheels and driving the wheels, always push in the TRAC & VSC cut ("TRAC OFF") switch and turn the TRAC & VSC system OFF
NOTE:
  • The SLIP indicator light blinks when the TRAC system is operational.
  • The SLIP indicator light blinks and the VSC buzzer sounds when the VSC system is operational.
  1. Press the TRAC OFF switch.
    2. NOTE: The TRAC OFF indicator light should be always OFF when the engine is restarted.
    Fig 1: Locating TRAC OFF & SLIP Indicator Lights
    G00397537Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Check that the TRAC OFF indicator light comes ON.
  3. Begin measurements.
  4. Press the TRAC OFF switch again to change the TRAC & VSC system to operational condition and check that the TRAC OFF indicator light goes off.
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