CONTROL SYSTEM
01–40–15
01–40
Cruise control function
• The cruise control includes accelerating, coasting, resume, tap-down, tap-up and downshift functions (AT).
Function List
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DRIVE-BY-WIRE RELAY CONTROL OUTLINE [LF]
E5U014000000N61
• Supplies power to the drive-by-wire control.
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DRIVE-BY-WIRE RELAY CONTROL OPERATION [LF]
E5U014000000N62
• When the main relay is on, the drive-by-wire relay also turns on. (See 01–40–11 MAIN RELAY CONTROL
OPERATION [LF].)
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VARIABLE INTAKE AIR CONTROL OUTLINE [LF]
E5U014000000N16
• Energizes the variable intake air solenoid valve according to engine speed for enhanced inertia charging effect.
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VARIABLE INTAKE AIR CONTROL BLOCK DIAGRAM [LF]
E5U014000000N17
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Function Contents
Accelerating • When any of the following conditions are met while driving in cruise control and when the RES/+
switch is continuously pressed, the PCM gradually increases the set vehicle speed.
— Except during resume operation
— The RES/+ switch is on one time or more during resume operation.
Coasting • When the SET/- switch is continuously pressed, the PCM gradually decreases the set vehicle
speed.
Resume • When the RES/+ switch signal is input to the PCM during regular driving (cruise control is stopped)
and the previously set vehicle speed is stored in the PCM, the PCM sets the set vehicle speed to
the previously set vehicle speed and begins control.
Tap down • When all of the following conditions are met while driving in cruise control, the PCM decreases the
set vehicle speed by 1.6 km/h {1.0 mph} and controls the throttle valve actuator.
— During cruise control
— RES/+ switch off
— The RES/+ switch switches from off to on
— When actual vehicle speed is lower (set vehicle speed +2.0 km/h {+1.2 mph})
Ta p - up • When all of the following conditions are met, the PCM increases the set vehicle speed by 1.6 km/h
{1.0 mph} and controls the throttle valve actuator so that the vehicle speed is close to the set vehicle
speed.
— During cruise control
— The RES/+ switch switches from off to on
Downshift (AT) • When the following conditions are met, a downshift signal is sent to the TCM via CAN.
— RES/+ switch on
— Target vehicle acceleration is not reached
CKP SENSOR
PCM
VARIABLE INTAKE AIR
SOLENOID VALVE
TP SENSOR NO.1, NO.2
E5U140ZT5001
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