Nissan Juke Service and Repair Manual : Cooling fan control

Cooling fan control : System Diagram

Cooling fan control : System Description


Cooling fan control : System Description

INPUT/OUTPUT SIGNAL CHART

*: The ECM determines the start signal status by the signals of engine speed


*: The ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, A/C ON signal and refrigerant pressure.

Cooling fan control signal is sent to IPDM E/R from ECM by CAN communication line. Then, IPDM E/R sends ON/OFF pulse duty signal to cooling fan control module. Corresponding to this ON/OFF pulse duty signal, cooling fan control module gives cooling fan motor operating voltage to cooling fan motors. Cooling fan speed is controlled by duty cycle of cooling fan motor operating voltage sent from cooling fan control module.

    Air conditioning cut control
    Air conditioning cut control : System Diagram Air conditioning cut control : System Description INPUT/OUTPUT SIGNAL CHART *: ECM determines the start signal status by the signals of engine spe ...

    Starter motor drive control
    Starter motor drive control : System Diagram Starter motor drive control : System DescriptionINPUT/OUTPUT SIGNAL CHART INPUT/OUTPUT SIGNAL CHART *: With Intelligent Key system SYSTEM DESCRIPT ...

    Other materials:

    Unbalance steering wheel turning force (torque variation)
    Description Unbalance steering wheel turning force (torque variation). Diagnosis Procedure 1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP Check the EPS warning lamp while engine is running. Does the EPS warning lamp turn OFF? YES >> GO TO 2. NO >> Refer to STC-28, "Diag ...

    P1777 step motor
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test. After the repair, p ...

    Refrigerant pressure sensor
    Exploded View Refer to HA-39, "Exploded View". (HR16DE) Refer to HA-94, "Exploded View". (MR16DDT) Removal and Installation REMOVAL Remove refrigerant pressure sensor. Refer to HA-42, "REFRIGERANT PRESSURE SENSOR : Removal and Installation". (HR16DE) Refer to ...