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Home >> Nissan-Datsun >> 2013 >> Altima Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 94 (Engine Control System (Introduction) (CALIFORNIA)) >> System Description >> Cooling Fan Control >> System Description >> Input/Output Signal Chart
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Input/Output Signal Chart

WARNING: This page is about a different car, the 2013 Nissan Cube. However, it is still accessible from the selected car via links, so may be relevant.
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed(1) Cooling fan control IPDM E/R
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Cooling fan relay
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Cooling fan motor
Battery Battery voltage(1)
ABS actuator and electric unit (control unit) Vehicle speed(2)
Engine coolant temperature sensor Engine coolant temperature
BCM Air conditioner ON signal(2)
Refrigerant pressure sensor Refrigerant pressure
(1) The ECM determines the start signal status by the signals of engine speed and battery voltage.
(2) This signal is sent to ECM via the CAN communication line.