Nissan Sentra manuals

Nissan Sentra Service Manual: Cooling fan

Nissan Sentra Service Manual / Engine / Engine control system / Dtc/circuit diagnosis / Cooling fan

Component Function Check

1.CHECK COOLING FAN FUNCTION

With CONSULT


  1. Turn ignition switch ON.
  2. Perform “FAN” in “ACTIVE TEST” mode of “ENGINE” using CONSULT
  3. Check that cooling fan operates at low speed or high speed.

Without CONSULT


  1. Activate IPDM E/R auto active test and check cooling fan motors operation. Refer to PCS-9, "Diagnosis Description" (with intelligent key), or PCS-37, "Diagnosis Description" (without intelligent key).
  2. Check that cooling fan operates.

Is the inspection result normal? YES >> INSPECTION END

NO >> Proceed to EC-463, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK COOLING FAN MOTOR GROUND CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect cooling fan motor harness connector
  3. Check the continuity between cooling fan motor harness connector and ground.


  1. Also check harness for short to ground.

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace error-detected parts.

2.CHECK COOLING FAN MOTOR CIRCUIT-1

  1. Disconnect IPDM E/R harness connector.
  2. Check the continuity between IPDM E/R harness connector and cooling fan motor harness connector.


  1. Also check harness for short to ground.

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace error-detected parts.

3.CHECK COOLING FAN MOTOR

Check cooling fan motor. Refer to EC-464, "Component Inspection (Cooling Fan Motor)".

Is the inspection result normal? YES >> GO TO 4.

NO >> Replace cooling fan motor. Refer to CO-17, "Removal and Installation".

4.CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to GI-39, "Intermittent Incident".

Is the inspection result normal? YES >> Check IPDM E/R. Refer to PCS-10, "CONSULT Function (IPDM E/R)" (With intelligent key system) or PCS-38, "CONSULT Function (IPDM E/R)" (Without intelligent key system).

NO >> Repair or replace error-detected parts.

Component Inspection (Cooling Fan Motor)

1.CHECK COOLING FAN MOTOR

Supply cooling fan motor terminals with battery voltage and check operation.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace cooling fan motor. Refer to CO-17, "Removal and Installation".

Electrical load signal
Description The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred via the CAN communication line. Component Function Check 1.CHECK REAR WIN ...

Refrigerant pressure sensor
Component Function Check 1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION Start engine and warm it up to normal operating temperature. Turn A/C switch and blower fan switch ON. Check the ...

Other materials:

How to Check Terminal
CONNECTOR AND TERMINAL PIN KIT Use the connector and terminal pin kits listed below when replacing connectors or terminals. The connector and terminal pin kits contain some of the most commonly used NISSAN/INFINITI connectors and terminals. For detailed connector and terminal pin repla ...

Description
NOTICE: Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing. Before performing trouble diagnoses, read the “Work Flow” in each section. After repairs, re-check that the problem has been comp ...

Exhaust manifold
Exploded View CALIFORNIA Air fuel ratio sensor Exhaust manifold heat shield (upper) Exhaust manifold and three way catalyst Exhaust manifold heat shield (rear) Exhaust manifold heat shield (front) Exhaust manifold gasket Cylinder head EXCEPT CALIFORNIA Air fuel ratio ...

© 2014-2025 Copyright www.nisentra.com