GS 300 L6-3.0L (2JZ-GE) (1993)
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When the vehicle speed falls below the minimum speed limit, Approx. 40 kph (25 mph)
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When the vehicle speed falls more than 16 kph (10 mph) below the set speed, E.G. ON an upward slope.
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When power to the cruise control system is momentarily cut off.
c. If any of the following conditions occurs during cruise control operation, the cruise control is released.
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Open circuit for TERMINAL 1 of cruise control ECU and TERMINAL 2 of stop light SW.
8. AUTOMATIC TRANSMISSION CONTROL FUNCTION
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In overdrive. If the vehicle speed becomes lower than the overdrive cut speed (Set speed minus Approx. 4 kph. 2.5 mph) during cruise control
operation, such as driving up a hill, the overdrive is released and the power increased to prevent a reduction in vehicle speed.
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After releasing the overdrive, vehicle speed becomes higher than the overdrive return speed (Set speed minus Approx.2 kph. 1.2 mph) and the
ECU judges by the signals from potentiometer of the actuator that the upward slope has finished, overdrive is resumed after approximately 6
seconds.
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During cruise control driving, the cruise control operation signal is output from the cruise control ECU to the Engine control module (Engine
and Transmission ECU). Upon receiving this signal, the Engine control module (Engine and Transmission ECU) changes the shift pattern to
normal.
To maintain smooth cruise control operation (ON a downward slope etc.), lock-up release of the transmission when the idling point of the
throttle position is "ON" is forbidden.