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EC-550
[QR (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM
System Chart BBS001LS
*1: This sensor is not used to control the engine system under normal conditions.
*2: This input signal is sent to the ECM through CAN communication line.
*3: This output signal is sent from the ECM through CAN communication line.
*4: With ESP models.
*5: Without ESP models.
*6: For QR25DE engine models
Input (Sensor) ECM function Output (Actuator)
● Camshaft position sensor (PHASE)
● Crankshaft position sensor (POS)
● Mass air flow sensor
● Engine coolant temperature sensor
● Heated oxygen sensor 1
● Throttle position sensor
● Accelerator pedal position sensor
● Park/neutral position (PNP) switch
● Intake air temperature sensor
● Power steering pressure sensor
● Ignition switch
● Battery voltage
● Knock sensor
● Refrigerant pressure sensor
● Stop lamp switch
● Heated oxygen sensor 2*
1
● TCM (Transmission control module)*
2
● ESP/TCS/ABS control unit*
2
*
4
● ABS actuator and electric unit
(control unit)*
2
*
5
● Air conditioner switch
● Wheel sensor*
2
● Electrical load signal
● ASCD steering switch*
6
● ASCD brake switch*
6
● ASCD clutch switch*
6
Fuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
On board diagnostic system
MI (On the instrument panel)*
3
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow control
EVAP canister purge volume control
solenoid valve
Air conditioning cut control Air conditioner relay
Power valve control*
6
VIAS control solenoid valve
ASCD vehicle speed control*
6
Electric throttle control actuator
Cooling fan control Cooling fan relay
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