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HOMESERVICE MANUALSNISSAN-DATSUN2012370Z TOURING, 2D CONVERTIBLE, STANDARD TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - INTRODUCTIONDTC/CIRCUIT DIAGNOSISPOWER SUPPLY AND GROUND CIRCUIT (VVEL CONTROL MODULE)DIAGNOSIS PROCEDURE
2012 Nissan-Datsun 370Z Touring, 2D Convertible, Standard Trans

Diagnosis Procedure

2012 Nissan-Datsun 370Z Touring, 2D Convertible, Standard TransSECTION Diagnosis Procedure
  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection M95. Refer to Ground Inspection in CIRCUIT INSPECTION .

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. CHECK VVEL CONTROL MODULE GROUND CIRCUIT FOR OPEN AND SHORT
    1. Disconnect VVEL control module harness connector.
    2. Check the continuity between VVEL control module harness connector and ground.
      VVEL control module Ground Continuity
      Connector Terminal
      E15 14 Ground Existed
    3. Also check harness for short to power.

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair open circuit, short to power in harness connectors.

  3. CHECK VVEL CONTROL MODULE POWER SUPPLY CIRCUIT-I
    1. Reconnect VVEL control module harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between VVEL control module harness connector and ground.
      VVEL control module Voltage
      Connector + -
      Terminal Terminal
      E15 8 14 After turning ignition switch OFF, battery voltage will exist for a few seconds, then drop to approximately 0 V.

      Is the inspection result normal? 

      YES: GO TO  5.

      NO: GO TO 4.

  4. CHECK VVEL CONTROL MODULE POWER SUPPLY CIRCUIT-II
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Disconnect VVEL control module harness connector.
    3. Disconnect IPDM E/R harness connector.
    4. Check the continuity between VVEL control module harness connector and IPDM E/R harness connector.
      VVEL control module IPDM E/R Continuity
      Connector Terminal Connector Terminal
      E15 8 E7 49 Existed
    5. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: "DIAGNOSIS PROCEDURE "

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

  5. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    Is the inspection result normal? 

    YES: Replace IPDM E/R.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

RENDER: 1.0x

NO RELATED

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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.