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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2265 (Engine Control System - Introduction) >> Engine Control System >> Electronic Ignition (EI) System >> Input/Output Signal Chart
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Input/Output Signal Chart

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
INPUT/OUTPUT SIGNAL CHART

Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed(2)
Piston position
Ignition timing control Power transistor
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery Battery voltage(2)
Wheel sensor(1) Vehicle speed
(1) This signal is sent to the ECM through CAN communication line.
(2) ECM determines the start signal status by the signals of engine speed and battery voltage.