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Home >> Nissan-Datsun >> 2013 >> Juke S, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing, Periodic Maintenance And Removal And Installation >> Cooling Fan >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect cooling fan control nodule harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between cooling fan control nodule harness connector and ground.
      + - Voltage
      Cooling fan control module
      Connector Terminal
      E203 3 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO  5.

      NO: GO TO 2.

  2. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect cooling fan relay harness connector.
    3. Check the continuity between cooling fan control nodule harness connector and cooling fan relay harness connector.
      + - Continuity
      Cooling fan control module Cooling fan relay
      Connector Terminal Connector Terminal
      E203 3 E204 3 Existed
    4. 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 RELAY POWER SUPPLY CIRCUIT 
    1. Disconnect IPDM E/R harness connector.
    2. Check the continuity between cooling fan relay harness connector and IPDM E/R harness connector.
      + - Continuity
      Cooling fan relay IPDM E/R
      Connector Terminal Connector Terminal
      E204 1 E17 67 Existed
    3. Also check harness for short to ground.

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair or replace error-detected parts.

  4. CHECK COOLING FAN RELAY 

    Check cooling fan relay. Refer to "COMPONENT INSPECTION (COOLING FAN RELAY) ".

    Is the inspection result normal? 

    YES: Perform the trouble diagnosis for power supply circuit.

    NO: Replace cooling fan relay. Refer to "STANDARDIZED RELAY ".

  5. CHECK COOLING FAN CONTROL MODULE GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check the continuity between cooling fan control nodule harness connector and ground.
      + - Continuity
      Cooling fan control module
      Connector Terminal
      E203 1 Ground Existed
    3. Also check harness for short to power.

      Is the inspection result normal? 

      YES: GO TO 6.

      NO: Repair or replace error-detected parts.

  6. CHECK COOLING FAN CONTROL SIGNAL CIRCUIT 
    1. Disconnect IPDM E/R harness connector.
    2. Check the continuity between cooling fan control nodule harness connector and IPDM E/R harness connector.
      + - Continuity
      Cooling fan control module IPDM E/R
      Connector Terminal Connector Terminal
      E203 2 E17 72 Existed
    3. Also check harness for short to ground and to power.

      Is the inspection result normal? 

      YES: GO TO 7.

      NO: Repair or replace error-detected parts.

  7. CHECK COOLING FAN CONTROL MODULE OUTPUT SIGNAL CIRCUIT 
    1. Reconnect all harness connectors disconnected.
    2. Disconnect cooling fan control module harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between cooling fan control module terminals and ground.
      + - Voltage
      Cooling fan control module
      Connector Terminal
      E301 4 Ground Battery voltage
      E302 6

      Is the inspection result normal? 

      YES: GO TO 8.

      NO: Repair or replace error-detected parts.

  8. CHECK COOLING FAN MOTORS -1 AND -2 

    Check the cooling fan motor. Refer to "COMPONENT INSPECTION (COOLING FAN MOTOR) ".

    YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

    NO: Replace cooling motor. Refer to "EXPLODED VIEW ".

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