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Home >> Infiniti >> 2006 >> G35 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0643 To P2A03 (Sedan) >> 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 E6.
    3. Check voltage between IPDM E/R terminals 15, 16 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

      Fig 1: Identifying Voltage Between IPDM E/R Terminals 15, 16 And Ground
      G04120148Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  3.
    2. NG: GO TO 2.
  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • 40A fusible links
    • Harness for open or short between IPDM E/R and battery

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

  3. CHECK COOLING FAN MOTORS CIRCUIT 
    1. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
    2. Disconnect all IPDM E/R harness connectors.
    3. Check harness continuity between the following; cooling fan motor-1 terminal 2 and IPDM E/R terminal 11, cooling fan motor-1 terminal 3 and ground. IPDM E/R terminal 38, 60 and ground. Refer to WIRING DIAGRAM .
      Fig 2: Locating Cooling Fan Motor-1 And Cooling Fan Motor-2 Harness Connector
      G04120149Courtesy of NISSAN MOTOR CO., U.S.A.

      Continuity should exist. 

    4. Also check harness for short to ground and short to power.
    5. Check harness continuity between the following; cooling fan motor-2 terminal 2 and IPDM E/R terminal 10, cooling fan motor-2 terminal 3 and ground. Refer to WIRING DIAGRAM .

      Continuity should exist. 

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

    OK or NG 

    1. OK: GO TO  5.
    2. NG: GO TO 4.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness for open or short between cooling fan motors-1, 2 and IPDM E/R
    • Harness for open or short between cooling fan motors-1, 2 and ground
    • Harness for open or short between IPDM E/R and ground

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

  5. CHECK COOLING FAN MOTORS 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    1. OK: GO TO 6.
    2. NG: Replace cooling fan motors.
  6. 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 or connector.
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