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:
P0720 Output speed sensor
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
P0720
OUTPUT SPEED SENSOR
(Output Speed Sensor Circuit)
The output speed sensor value is less than
150 rpm continuously for 5 seconds ...
Rear drum brake
BRAKE LINING
BRAKE LINING : Inspection
INSPECTION
Brake Lining
Check brake lining wear thickness (A). Check using a scale if
necessary.
Lining wear thickness (A) : Refer to BR-55, "Rear
Drum Brake".
BRAKE DRUM
BRAKE DRUM : Inspection
INSPECTION
Appearance
Check surfac ...
The low washer fluid warning lamp does not turn on or off
Description
The low washer fluid warning lamp is still illuminated even after washer
fluid is added.
The low washer fluid warning lamp is not illuminated even though the
washer tank is empty.
Diagnosis procedure
1.Check washer fluid level switch signal circuit
Check the washer fluid ...
