Toyota COROLLA2004, Электрическая схема проводки

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2004 COROLLA (EWD533U)
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The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of engine
control is given here.
1. Input Signals
(1) Engine coolant temp. signal system
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which
varies according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINAL
THW of the engine control module.
(2) Intake air temp. signal system
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a
control signal to TERMINAL THA of the engine control module.
(3) Power steering oil pressure signal system
Power steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal to
TERMINAL PSW of the engine control module.
(4) RPM signal system
Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.
Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is input
into TERMINAL NE+.
(5) Throttle signal system
The throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINAL VTA
of the engine control module.
(6) Vehicle speed signal system
The vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine control
module via the comb. meter and the skid control ECU with actuator. (w/ ABS)
The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input to
TERMINAL SPD of the engine control module via the comb. meter. (w/o ABS)
(7) NSW signal system (A/T)
The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal to
TERMINAL NSW of the engine control module.
(8) A/C SW signal system
The operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL A/CS of the engine
control module.
(9) Battery signal system
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on,
voltage for engine control module operation is applied via the EFI relay to TEB of the engine control module.
(10) Intake air volume signal system
Intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the engine
control module.
(11) STA signal system
To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input as
a control signal to TERMINAL STA of the engine control module.
(12) Oxygen sensor signal system
The oxygen density in the exhaust gases is detected and is input as a control signal into TERMINALS OX1A and OX1B
of the engine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for
warming the sensor. The heater is also controlled by the engine control module (HT1A and HT1B).
(13) Engine knock signal system
Engine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine control
module.
(14) Electrical load signal system
When systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal is
input to TERMINALS ELS and ELS2 as a control signal.
(15) Vapor pressure signal system
Vapor pressure is detected by the vapor pressure sensor and is input as a control signal to TERMINAL PTNK of the
engine control module.
System Outline