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Home >> Nissan-Datsun >> 2008 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 (Qr25DE) >> DTC P1217 Engine Over Temperature >> Diagnostic Procedure >> Procedure A
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Procedure A

  1. CHECK IPDM E/R POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector E44.
    3. Check voltage between IPDM E/R terminal 22 and ground with CONSULT-III or tester.

      Voltage: Battery voltage 

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

    Fig 1: Checking Voltage Between IPDM E/R Terminal 22 And Ground
    G04897202Courtesy 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

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

  3. CHECK COOLING FAN RELAYS POWER SUPPLY CIRCUIT 
    1. Disconnect cooling fan relays-4 (2) and -5 (1).
      • <= : Vehicle front
        Fig 2: Identifying Cooling Fan Relays
        G04925516Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Check voltage between cooling fan relays-4, -5 terminal 1 and ground with CONSULT-III or tester.

      Voltage: Battery voltage 

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

    Fig 3: Checking Voltage Between Cooling Fan Relays-4, -5 Terminal 1 And Ground
    G04925517Courtesy of NISSAN MOTOR CO., U.S.A.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • 40A fusible link
    • Harness for open or short between cooling fan relays-4, -5 and battery

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

  5. CHECK COOLING FAN MOTORS POWER SUPPLY CIRCUIT 
    1. Disconnect cooling fan motor-2 (2) harness connector.
      • <= : Vehicle front
      • Cooling fan motor-1 (1)
        Fig 4: Identifying Cooling Fan Motor
        G04926142Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Check voltage between cooling fan motor-2 terminal 2, 4 and ground with CONSULT-III or tester.

      Voltage: Battery voltage 

    OK or NG 

    OK: GO TO  7.

    NG: GO TO 6.

    Fig 5: Checking Voltage Between Cooling Fan Motor-2 Terminal 2, 4 And Ground
    G04925519Courtesy of NISSAN MOTOR CO., U.S.A.
  6. DETECT MALFUNCTIONING PART 

    Check the following.

    • 40A fusible link
    • Harness for open or short between cooling fan motor-2 and battery

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

  7. CHECK COOLING FAN MOTORS CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connectors E43, E44 and E46.
    3. Disconnect cooling fan motor-1 (1) harness connector.
      • <= : Vehicle front
      • Cooling fan motor-2 (2)
    4. Check harness continuity between the following;

      cooling fan relay-4 terminal 2 and IPDM E/R terminal 45,

      cooling fan relay-4 terminal 5 and IPDM E/R terminal 23,

      cooling fan relay-5 terminal 2 and IPDM E/R terminal 6,

      cooling fan relay-5 terminal 5 and ground,

      cooling fan relay-4 terminal 3 and cooling fan motor-1 terminal 2,

      cooling fan motor-1 terminal 2 and IPDM E/R terminal 24,

      cooling fan motor-1 terminal 4 and IPDM E/R terminal 20,

      cooling fan motor-1 terminal 1, 3 and ground.

      IPDM E/R terminal 39, 59 and ground.

      Fig 6: Identifying Cooling Fan Motor
      G04926142Courtesy of NISSAN MOTOR CO., U.S.A.

      Continuity should exist. 

      cooling fan relay-4 terminal 5 and cooling fan motor-2 terminal 1,

      cooling fan relay-5 terminal 3 and cooling fan motor-2 terminal 3,

      Refer to WIRING DIAGRAM .

      Continuity should exist. 

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

    OK or NG 

    OK: GO TO  9.

    NG: GO TO 8.

  8. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness for open or short between cooling fan relay-4 and IPDM E/R
    • Harness for open or short between cooling fan relay-5 and IPDM E/R
    • Harness for open or short between cooling fan relay-4 and cooling fan motor-1
    • Harness for open or short between cooling fan relay-4 and cooling fan motor-2
    • Harness for open or short between cooling fan relay-5 and cooling fan motor-2
    • Harness for open or short between cooling fan relay-5 and ground
    • Harness for open or short between cooling fan motor-1 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 or connectors.

  9. CHECK GROUND CONNECTIONS 

    Loosen and retighten ground screw on the body.

    Refer to "GROUND INSPECTION ".

    Fig 7: Identifying Body Ground Connections
    G04926018Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 10.

    NG: Repair or replace ground connections.

  10. CHECK COOLING FAN RELAYS-4 AND -5 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 11.

    NG: Replace malfunctioning cooling fan relay.

  11. CHECK COOLING FAN MOTORS-1 AND -2 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 12.

    NG: Replace malfunctioning cooling fan motor.

  12. CHECK INTERMITTENT INCIDENT 

    Perform "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    OK or NG 

    OK: Replace IPDM E/R. Refer to "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) ".

    NG: Repair or replace harness or connector.

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