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Home >> Infiniti >> 2013 >> M56 Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Introduction) >> System Description >> System >> Direct Injection Gasoline System >> DIRECT INJECTION GASOLINE SYSTEM: System Description >> Input/Output Signal Chart
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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
Mass air flow sensor Amount of intake air
Intake air temperature sensor Intake air temperature
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Fuel rail pressure sensor Fuel rail pressure
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
TCM Park/neutral position
Battery Battery voltage(2)
Knock sensor Engine knocking condition
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2(1) Density of oxygen in exhaust gas
ABS actuator and electric unit (control unit) VDC/TCS operation command
A/C auto amp. A/C ON signal Blower ON signal
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.
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