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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 275 (Engine Control System (Introduction) (5.6L)) >> System Description >> System >> Cooling Fan Control >> System Description >> Input/Output Signal Chart

Input/Output Signal Chart

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD and 2018 Nissan NV2500 HD. 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

Engine speed* 1

Cooling fan speed request signal* 2

IPDM E/R

-

Fan clutch assembly

Camshaft position sensor

Camshaft position

Engine coolant temperature sensor 1

Engine coolant temperature

Refrigerant pressure sensor

Refrigerant pressure

Intake air temperature sensor

Intake air temperature

Battery

Battery voltage

Combination meter

Vehicle speed signal* 2

BCM

A/C switch signal* 2

Fan clutch assembly

Cooling fan speed

*1: The ECM determines the engine speed by the signals of crankshaft position and camshaft position.

*2: This signal is sent to ECM via the CAN communication line.