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Home >> Nissan-Datsun >> 2010 >> Altima SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Engine Control System - Introduction (VQ35DE)) >> System Description >> Cooling Fan Control >> System Description >> Input/Output Signal Chart

Input/Output Signal Chart

WARNING: This page is about a different car, the 2011 Nissan Altima. 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)
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
Engine coolant temperature sensor Engine coolant temperature
Refrigerant pressure sensor Refrigerant pressure
Battery Battery voltage(1)
Unified meter and A/C amp. Air conditioner ON signal(2)
Vehicle speed(2)
(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.