Toyota 4RUNNER 2007 Electrical Wiring Diagram page 251

Cruise Control for 2UZ–FE
System Outline
The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makes
it possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal.
1. Set Operation
When the ON–OFF SW is turned on, the system starts preparations necessary for the cruise control and turns on the
indicator light in the combination meter.
2. Set Speed Control
When the – SET SW is operated with the cruise control main SW turned on during travelling, the constant vehicle speed is
controlled.
3. Coast Control
When the – SET SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve to
decelerate the vehicle. Every time the – SET SW is turned on instantaneously, the vehicle speed is decelerated
approximately 1.5 km/h.
4. Accel Control
When the + RES SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve to
accelerate the vehicle. Every time the + RES SW is turned on instantaneously, the vehicle speed is accelerated
approximately 1.5 km/h.
5. Resume Control
When the vehicle speed is above the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, use
of the + RES SW accelerates the vehicle to the speed level used before canceling the cruise control.
6. Manual Cancel Mechanism
If any of the following signals is input during cruise control travelling, the cruise control is cancelled.
∗ The stop light SW is turned on.
∗ The CANCEL SW is turned on.
∗ The ON–OFF SW is turned off.
∗ Gear is shifted from D position to other positions than D.
7. Auto Cancel Operation
∗ If any of the following conditions are detected, the set speed is erased and the control is canceled.
(1) Disconnection and/or short in the stop light SW
(2) Malfunction in the vehicle speed signal
(3) Malfunction in the electronic throttle parts
(4) Malfunction in the stop light SW input circuit
(5) Malfunction in the cancel circuit
(6) The actual vehicle speed becomes –16 km/h slower than the set speed
∗ If the following condition is detected, the set speed is kept and the control is canceled.
(1) The actual vehicle speed becomes slower than the minimum speed limit.
8. Overdrive Control Function
Overdrive is sometimes cut off on gradients during cruise control driving. When end of climbing gradient is determined by
throttle opening degree information after overdrive is canceled, control is reset to overdrive condition after overdrive resetting
timer operation. Also, when overdrive is cut off during accelerator resuming control, control is reset to overdrive condition
when accelerator resuming control is finished.
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4RUNNER (EM03M0U)