Nissan Sentra Service Manual: Cooling fan control
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pressure, air conditioner ON signal. Then control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
Cooling Fan Relay Operation
When IPDM E/R recieves a cooling fan speed request signal, IPDM E/R controls the cooling fan ralay 1, 2 and 3.
Air conditioning cut control
AIR CONDITIONING CUT CONTROL : System Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor ( ...
Starter motor drive control
STARTER MOTOR DRIVE CONTROL : System Description
SYSTEN DIAGRAM
*1: CVT models
*2: M/T models
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
...
Other materials:
Moonroof switch
Removal and installation
REMOVAL
Remove the map lamp. Refer to INL-52, "Removal and Installation".
Release the pawls and remove the moonroof switch finisher (1).
: Pawl
Release the pawls and remove the moonroof switch (2).
: Pawl
INSTALLATION
Installation is in the ...
Main line between dlc and hvac circuit
Diagnosis Procedure
1.Check harness continuity (open circuit)
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Disconnect the following harness connectors.
Ecm
A/c auto amp.
Check the continuity between the data link connector and the a/c ...
Auto operation does not operate but manual operate normally (driver side)
Diagnosis Procedure
1.PERFORM INITIALIZATION PROCEDURE
Initialization procedure is executed and operation is confirmed.
Refer to PWC-29, "Work Procedure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK ENCODER CIRCUIT
Check encoder cir ...
