2004 Infiniti QX56 AWDFACTORY OEM SERVICE PROCEDURE

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

    OK: GO TO  3.

    NG: GO TO 2.

    Fig 1: DTC P1217 Checking Voltage Between IPDM E/R Terminal 22 & Ground
    G02691651Courtesy 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 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 20, cooling fan motor terminal 2 and body ground

      Refer to wiring diagram.

      Continuity should exist. 

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

    OK or NG

    OK: GO TO 4.

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

    Fig 2: DTC P1217 Locating Cooling Fan Motor Harness Connector
    G02691652Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK COOLING FAN MOTOR 

    Refer to COMPONENT INSPECTION .

    OK or NG

    OK: GO TO 5.

    NG: Replace cooling fan motor

  5. CHECK INTERMITTENT INCIDENT 

    Perform TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    OK or NG

    OK: Replace IPDM E/R. Refer to FUSES & CIRCUIT BREAKERS .

    NG: Repair or replace harness connectors.

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.