Negative Pressure Check/Traction Control [Vehicles With TCL]

1. Disconnect the vacuum hose (green stripe) from the vacuum actuator, connect a hand vacuum pump between the actuator nipple and the vacuum hose via a T-joint. Set the hand vacuum pump near the driver's seat so that the negative pressure check can be carried out at the driver's seat.

Normal Condition:

2. Check the negative pressure during traction control operation.
Inspection service points are the same as for the traction control operation inspection.
(Refer to On-vehicle Service.)

NOTE: The traction control system function will stop 20 seconds after the accelerator pedal has been depressed, and negative pressure will gradually drop.