Toyota ZZT230 series, Repair Manual

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DIAGNOSTICS
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CRUISE CONTROL SYSTEM
N17520
Nl7520
4.
PROBLEM SYMPTOM CHECK (ROAD TEsn
(a)
Inspect the SET switch.
(1) Push the main switch ON.
(2)
Drive at a desired speed (40 km/h (25 mph) or high­
er).
(3) Press the control switch to the SET/COAST.
(4) After releasing the switch, check that the vehicle
cruises at the desired speed.
(b) Inspect the ACCEL switch.
(c)
(1) Push the main switch ON.
(2)
Orive at a desired speed (40 km/h (25 mph) or high­
er).
(3)
Check that the vehicle speed increases while the
control switch is turned to RES/ACC, and that the
vehicle cruises at the set speed when the switch is
released.
(4} Momentarily raise the control switch upward to the
RES/ACC position and then immediately release it.
Check that the vehicle speed increases by approx.
1 .5 km/h (Tap-up function).
Inspect the COAST switch.
(1) Push the main switch ON.
(2)
Drive at a desired speed (40 km/h (25 mph) or high­
er).
(3) Check that the vehicle speed decreases while the
control switch is turned to SET/COAST, and the ve­
hicle cruises at the set speed when the switch is re­
leased.
(4) Momentarily pull the control switch down to SET/
COAST, and then immediately release it. Check
that the vehicle speed decreases by about 1 .5 km/h
(Tap-down function).