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:
The door open warning continues displaying, or does not display
Description
The door ajar warning is displayed even though all of the doors are
closed.
The door ajar warning is not displayed even though a door is ajar.
Diagnosis procedure
1.Check bcm input signal
Check the bcm input signal. Refer to dlk-102, "component function check"
( ...
Inspection and adjustment
Additional service when replacing control unit
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
WARNING:
Always perform zero point reset using CONSULT when removing and
installing the front passenger
seat or servicing the occupant classification system. If zero point reset is not ...
Precaution for Brake System
WARNING:
Clean any dust from the front brake and rear brake with a vacuum
dust collector. Do not blow with
compressed air.
Brake fluid: Refer to MA-11, "Fluids and Lubricants".
Do not reuse drained brake fluid.
Do not spill or splash brake fluid on painted surfaces. Brake fluid ...
