Nissan Sentra manuals

Nissan Sentra Service Manual: Cooling fan control

SYSTEM DIAGRAM

SYSTEM DESCRIPTION


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


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.

Starter motor drive control


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:

General Precautions
Always use a 12 volt battery as power source. Do not attempt to disconnect battery cables while engine is running. Before connecting or disconnecting the ECM harness connector, turn ignition switch OFF and disconnect negative battery cable. Failure to do so may damage the ECM because ...

Low tire pressure warning lamp does not turn oFF
Low Tire Pressure Warning Lamp Stays On When Ignition Switch Is Turned On DIAGNOSTIC PROCEDURE 1.INSPECT BCM CONNECTOR Turn ignition switch OFF. Disconnect BCM connectors. Check terminals for damage or loose connections. Is the inspection result normal? YES >> GO TO 2. NO > ...

P1564 ASCD Steering switch
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to EC-348, "DTC Logic". DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause ...

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