Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2001LANDCRUISER V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISCRUISE CONTROLDESCRIPTION AND OPERATION
2001 Toyota Landcruiser V8-4.7L (2UZ-FE)
Cruise Control: Description and Operation
2001 Toyota Landcruiser V8-4.7L (2UZ-FE)SECTION Description and Operation
SYSTEM OUTLINE
The cruise control system is a constant vehicle speed controller which controls the opening angle of the engine throttle valve by the SW, and allows driving at a constant speed without depressing the accelerator pedal.
SET OPERATION
When the CRUISE SW is turned on, the systems starts preparations for cruise control and turns on the indicator light in the combination meter.
SET SPEED CONTROL
When the SET/COAST SW is operated with the CRUISE SW turned on during driving, the speed is controlled at a constant speed.
COAST CONTROL
When the SET/COAST SW is kept turned on during cruise control driving, the engine control module controls the throttle valve to decelerate the vehicle speed.
Every time the SET/COAST SW is turned on instantaneously, the vehicle speed is decelerated approx. 1.5 km/h.
ACCEL CONTROL
When the RES/ACC SW is kept turned on during cruise control driving, the engine control module controls the throttle valve to accelerate the vehicle speed.
Every time the SET/COAST SW is turned on instantaneously, the vehicle speed is accelerated approx. 1.5 km/h.
RESUME CONTROL
If the vehicle speed is within the low speed limit (Approx. 40 km/h, 25 mph) when canceling the cruise control, operation of the RES/ACC SW accelerates the vehicle speed and resumes the level before canceling the cruise control.
MANUAL CANCEL MECHANISM
If any of the following signals are input during cruise control driving, the cruise control is canceled.
* The stop light SW is on
* The CANCEL SW is turned on
* The CRUISE SW is turned off
AUTO CANCEL FUNCTION
If any of the following conditions are detected, the cruise control is canceled:
* Failure in the stop light SW wiring
* Abnormality in the vehicle speed signal
* Malfunction in the electronically controlled throttle parts
OVERDRIVE FUNCTION
The overdrive may be canceled if the vehicle travels on a upward slope during cruise control driving. After the overdrive is canceled, if the vehicle speed exceeds the overdrive return speed (Set speed (2 km/h, 1.2 mph) ) and it is determined that the slope has finished, and the vehicle returns to overdrive mode again.
The cruise control system is a constant vehicle speed controller which controls the opening angle of the engine throttle valve by the SW, and allows driving at a constant speed without depressing the accelerator pedal.
SET OPERATION
When the CRUISE SW is turned on, the systems starts preparations for cruise control and turns on the indicator light in the combination meter.
SET SPEED CONTROL
When the SET/COAST SW is operated with the CRUISE SW turned on during driving, the speed is controlled at a constant speed.
COAST CONTROL
When the SET/COAST SW is kept turned on during cruise control driving, the engine control module controls the throttle valve to decelerate the vehicle speed.
Every time the SET/COAST SW is turned on instantaneously, the vehicle speed is decelerated approx. 1.5 km/h.
ACCEL CONTROL
When the RES/ACC SW is kept turned on during cruise control driving, the engine control module controls the throttle valve to accelerate the vehicle speed.
Every time the SET/COAST SW is turned on instantaneously, the vehicle speed is accelerated approx. 1.5 km/h.
RESUME CONTROL
If the vehicle speed is within the low speed limit (Approx. 40 km/h, 25 mph) when canceling the cruise control, operation of the RES/ACC SW accelerates the vehicle speed and resumes the level before canceling the cruise control.
MANUAL CANCEL MECHANISM
If any of the following signals are input during cruise control driving, the cruise control is canceled.
* The stop light SW is on
* The CANCEL SW is turned on
* The CRUISE SW is turned off
AUTO CANCEL FUNCTION
If any of the following conditions are detected, the cruise control is canceled:
* Failure in the stop light SW wiring
* Abnormality in the vehicle speed signal
* Malfunction in the electronically controlled throttle parts
OVERDRIVE FUNCTION
The overdrive may be canceled if the vehicle travels on a upward slope during cruise control driving. After the overdrive is canceled, if the vehicle speed exceeds the overdrive return speed (Set speed (2 km/h, 1.2 mph) ) and it is determined that the slope has finished, and the vehicle returns to overdrive mode again.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.