2012 Nissan-Datsun Cube BaseFACTORY OEM SERVICE PROCEDURE

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection E21. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES >> GO TO 2.

      NO >> Repair or replace ground connection.

  2. 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.
      IPDM E/R Cooling fan motor Continuity
      Connector Terminal Connector Terminal
      E10 5 E62 1 Existed
      7 2
      E11 10 3
    3. Check the continuity between cooling fan motor harness connector and ground.
      Cooling fan motor Ground Continuity
      Connector Terminal
      E62 4 Ground Existed
    4. Also check harness for short to ground and short to power.

      OK or NG 

      OK >> GO TO  4.

      NG >> GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness for open or short between cooling fan motor and IPDM E/R
    • Harness for open or short between cooling fan motor and ground

      >> Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK COOLING FAN MOTOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK >> GO TO 5.

    NG >> Replace cooling fan motor. Refer to "EXPLODED VIEW ".

  5. CHECK INTERMITTENT INCIDENT

    Perform "INTERMITTENT INCIDENT ".

    OK or NG 

    OK >> Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION " (With I-Key) or "REMOVAL AND INSTALLATION " (Without I-Key).

    NG >> Repair or replace harness or connector.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.