Input/Output Signal Chart
|
Sensor |
Input signal to ECM |
ECM function |
Actuator |
|
Crankshaft position sensor |
Engine speed* 2 |
Fuel injection & mixture ratio control |
Fuel injector |
|
Camshaft position sensor |
Camshaft position |
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|
Mass air flow sensor |
Amount of intake air |
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|
Intake air temperature sensor |
Intake air temperature |
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|
Engine coolant temperature sensor 1 |
Engine coolant temperature |
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|
Air fuel ratio (A/F) sensor 1 |
Density of oxygen in exhaust gas |
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|
Fuel rail pressure sensor |
Fuel rail pressure |
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|
Throttle position sensor |
Throttle position |
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|
Accelerator pedal position sensor |
Accelerator pedal position |
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|
TCM |
Gear position |
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|
Battery |
Battery voltage* 2 |
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|
Knock sensor |
Engine knocking condition |
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|
Power steering pressure sensor |
Power steering operation |
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|
Heated oxygen sensor 2* 1 |
Density of oxygen in exhaust gas |
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|
ABS actuator and electric unit (control unit) |
VDC/TCS operation command |
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|
A/C auto amp. |
A/C ON signal |
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|
Combination meter |
Vehicle speed |
*1: This sensor is not used to control the engine system under normal conditions.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.