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Toyota Sienna Service Manual: For vehicles equipped with traction control (trac) system

Toyota Sienna Service Manual / Introduction / Repair instruction / Precaution / For vehicles equipped with traction control (trac) system

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 cut ("TRAC OFF") switch and turn the TRAC system OFF.

FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TRAC) SYSTEM
FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TRAC) SYSTEM

(a) Confirm TRAC system is OFF

(1) Press the TRAC cut ("TRAC OFF") switch.

(2) Check that the TRAC OFF indicator light comes on when the TRAC system is turned OFF by the TRAC cut switch.

HINT:

The SLIP indicator light should always operate right after the engine is restarted.

(3) Begin measurements.

(4) Press the TRAC cut switch to turn the TRAC to the operative mode and check that the TRAC OFF indicator light goes off.

HINT: The SLIP indicator light blinks when the TRAC system in operating.

The SLIP indicator light should always operate right after the engine is restarted
The SLIP indicator light should always operate right after the engine is restarted.

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