Toyota 1993 MR2 Wiring Diagrams page 156

7. AUTO CANCEL FUNCTION
A) IF ANY OF THE FOLLOWING OPERATE CONDITIONS OCCURS DURING CRUISE CONTROL OPERATION, THE SET SPEED IS
ERASED, CURRENT FLOW TO THE MAGNETIC CLUTCH IS STOPPED AND THE CRUISE CONTROL IS RELEASED. (MAIN SWITCH
TURNS OFF).
WHEN THIS OCCURS, THE IGNITION SWITCH MUST BE TURNED OFF ONCE BEFORE THE MAIN SWITCH WILL TURN ON.
∗ OVER CURRENT TO TRANSISTOR DRIVING MOTOR AND/OR MAGNETIC CLUTCH.
∗ WHEN THE CURRENT CONTINUES TO FLOW TO THE MOTOR IN SIDE THE ACTUATOR, IN THE THROTTLE VALVE "OPEN"
DIRECTION
∗ OPEN CIRCUIT IN MAGNETIC CLUTCH.
∗ MOMENTARY INTERRUPTION OF VEHICLE SPEED SIGNAL.
∗ THE RESUME SWITCH IS ALREADY ON WHEN THE MAIN SWITCH IS TURNED ON.
∗ SHORT CIRCUIT IN CRUISE CONTROL SWITCH.
∗ MOTOR DOES NOT OPERATE DESPITE THE MOTOR DRIVE SIGNAL BEING OUTPUT.
B) IF ANY OF THE FOLLOWING CONDITIONS OCCURS DURING CRUISE CONTROL OPERATION, THE SET SPEED IS ERASED AND
THE CRUISE CONTROL IS RELEASED. (THE POWER OF MAGNETIC CLUTCH IS CUT OFF UNTIL THE SET SWITCH IS "ON" AGAIN.)
∗ WHEN THE VEHICLE SPEED FAIIS BELOW THE MINIMUM LIMIT, APPROX. 40KM/H (25MPH)
∗ WHEN THE VEHICLE SPEED FALLS MORE THAN 16KM/H (10MPH) BELOW THE SET SPEED, E.G. ON AN UPWARD SLOPE.
∗ 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.
∗ OPEN CIRCUIT FOR TERMINAL 16 OF CRUISE CONTROL ECU.
SERVICE HINTS
CRUISE CONTROL ACTUATOR
C 5
1–3 : APPROX. 2 KK
5–4 : APPROX. 38.5 K
CRUISE CONTROL SW [COMB. SW]
C14
15–19 : CONTINUITY WITH MAIN SW ON
: APPROX. 418 K WITH CANCEL SW ON
5–19
APPROX. 68 K WITH RESUME/ACCEL SW ON
APPROX. 198 K WITH SET/COAST SW ON
CRUISE CONTROL ECU
C17
14–GROUND: APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
1–GROUND : ALWAYS APPROX. 12 VOLTS
3–GROUND : CONTINUITY WITH PARKING BRAKE LEVER PULLED UP (ONE OF THE CANCEL SW) OR BRAKE FLUID LEVEL SW ON
20–GROUND: PULSE EACH 40 CM (DRIVER VEHICLE SLOWLY)
18–GROUND: APPROX. 418 K WITH CANCEL SW ON IN CONTROL SW
APPROX. 68 K WITH RES/ACC SW ON IN CONTROL SW
APPROX. 198 K WITH SET/COAST SW ON IN CONTROL SW
13–GROUND: ALWAYS CONTINUITY
2–GROUND : CONTINUITY WITH CLUTCH PEDAL DEPRESSED (M/T)
CONTINUITY WITH SHIFT LEVER AT "P" OR "N" RANGE (A/T)
4–GROUND : CONTINUITY WITH CRUISE CONTROL MAIN SW ON
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