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:
Connector symbols
Most of connector symbols in wiring diagrams are shown from the terminal
side.
Connector symbols shown from the terminal side are enclosed by
a single line and followed by the direction mark.
Connector symbols shown from the harness side are enclosed by
a double line and followed by the ...
Wiring diagram
Nvis (nissan vehicle immobilizer system-
nats)
Wiring Diagram
Vehicle security system
Wiring diagram
...
Engine maintenance
Drive belt
Drive belt : inspection
Alternator
Drive belt auto-tensioner
Crankshaft pulley
A/c compressor
Water pump
Drive belt
Possible use range
New drive belt range
Ndicator
Warning:
Perform this step when engine is stopped.
Check that the indicator of drive bel ...
