Nissan Versa (N17): Cooling fan

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / Cooling fan

Component Function Check

1.CHECK COOLING FAN FUNCTION

With CONSULT

  1. Turn ignition switch ON.
  2. Perform "COOLING FAN" in "ACTIVE TEST" mode with CONSULT.
  3. Touch "LOW" and "Hi" on the CONSULT screen.
  4. Check that cooling fan operates.

NOTE: The cooling fan operates at high speeds even when "LOW" is selected in CONSULT "ACTIVE TEST". (For single connector cooling fan without A/C models)

Without CONSULT

  1. Perform IPDM E/R auto active test and check cooling fan motor operation. Refer to PCS, "Diagnosis Description".
  2. Check that cooling fan operates.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Refer to EC, "Diagnosis Procedure".

Diagnosis Procedure

FOR SINGLE CONNECTOR COOLING FAN WITHOUT A/C MODELS

1.CHECK COOLING FAN MOTOR CIRCUIT

  1. Disconnect cooling fan motor harness connector.
  2. Check the continuity between IPDM E/R harness connector and cooling fan motor harness connector.
  3. Check the continuity between cooling fan motor harness connector and ground. 
  4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

2.CHECK COOLING FAN MOTOR

Refer to EC, "Component Inspection (Cooling Fan Motor)".

Is the inspection result normal?

YES >> GO TO 3.

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

3.CHECK INTERMITTENT INCIDENT

Perform GI, "Intermittent Incident".

Is the inspection result normal?

YES >> Replace IPDM E/R. Refer to PCS, "Removal and Installation" (WITH I-KEY) or PCS, "Removal and Installation" (WITHOUT I-KEY).

NO >> Repair or replace harness or connector.

EXCEPT FOR SINGLE CONNECTOR COOLING FAN WITHOUT A/C MODELS

1.CHECK COOLING FAN MOTOR CIRCUIT

  1. Disconnect cooling fan motor harness connector.
  2. Check the continuity between IPDM E/R harness connector and cooling fan motor harness connector.
  3. Check the continuity between cooling fan relay harness connector and cooling fan motor harness connector.
  4. Check the continuity between cooling fan motor harness connector and ground. 
  5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

2.CHECK COOLING FAN RELAY CIRCUIT

  1. Disconnect cooling fan relay harness connector.
  2. Disconnect IPDM E/R harness connector.
  3. Check the continuity between IPDM E/R harness connector and cooling fan relay harness connector.
  4. Check the continuity between cooling fan relay harness connector and ground. 
  5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK COOLING FAN RELAY

Refer to EC, "Component Inspection (Cooling Fan Relay)".

YES or NO

YES >> GO TO 4.

NO >> Replace cooling fan relay.

4.CHECK COOLING FAN MOTOR

Refer to EC, "Component Inspection (Cooling Fan Motor)".

YES or NO

YES >> GO TO 5.

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

5.CHECK INTERMITTENT INCIDENT

Perform GI, "Intermittent Incident".

YES or NO

YES >> Replace IPDM E/R. Refer to PCS, "Removal and Installation" (WITH I-KEY) or PCS, "Removal and Installation" (WITHOUT I-KEY).

NO >> Repair or replace harness or connector.

Component Inspection (Cooling Fan Motor)

1.CHECK COOLING FAN MOTOR

  1. Turn ignition switch OFF.
  2. Disconnect cooling fan motor harness connector.
  3. Supply cooling fan motor terminals with battery voltage and check operation. 

Is the inspection result normal?

YES >> INSPECTION END

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

Component Inspection (Cooling Fan Relay)

1.CHECK COOLING FAN RELAY

  1. Turn ignition switch OFF.
  2. Remove cooling fan relay.
  3. Check continuity between cooling fan relay terminals under the following conditions.                                             

CHECK COOLING FAN RELAY

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace cooling fan relay.

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