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Home >> Infiniti >> 2006 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0455 To P1217 >> DTC P1217 Engine Over Temperature >> Diagnostic Procedure >> Procedure A

Procedure A

  1. CHECK POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector E120.
    3. Check voltage between IPDM E/R terminal 22 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

    OK or NG 

    1. OK : GO TO  3.
    2. NG : GO TO 2.
      Fig 1: Identifying Voltage Between IPDM E/R Terminal 22 And Ground
      G04133085Courtesy of NISSAN MOTOR CO., U.S.A.
  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • 40A fusible link
    • Harness for open or short between IPDM E/R and battery
      1. : Repair open circuit or short to ground or short to power in harness or connectors.
  3. CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN OR SHORT 
    1. Disconnect cooling fan motor harness connector.
    2. Check harness continuity between cooling fan motor terminal 1 and IPDM E/R terminal 24, cooling fan motor terminal 2 and ground.

      Refer to WIRING DIAGRAM .

      Continuity should exist. 

    3. Also check harness for short to ground and short to power.

    OK or NG 

    1. OK : GO TO 4.
    2. NG : Repair open circuit or short to ground or short to power in harness or connectors.
      Fig 2: Identifying Cooling Fan Motor Connector Location
      G04133086Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK COOLING FAN MOTOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    1. OK : GO TO 5.
    2. NG : Replace cooling fan motor.
  5. CHECK INTERMITTENT INCIDENT 

    Perform "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    OK or NG 

    1. OK : Replace IPDM E/R. Refer to "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) ".
    2. NG : Repair or replace harness connectors.