2002 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECTION START 

    Turn ignition switch to START.

    Is any cylinder ignited? 

    Yes or No

    • Yes (With CONSULT-II): GO TO 2.
    • Yes (without CONSULT-II): GO TO  3.
    • No: GO TO  6.
  2. CHECK OVERALL FUNCTION 

    With CONSULT-II 

    1. Start engine.
    2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
    3. Make sure that each circuit produces a momentary engine speed drop.
      Fig 1: Scan Tool Display "Active Test"
      G02402179Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: INSPECTION END 
    • NG: GO TO  6.
  3. CHECK FUNCTION OF INJECTOR-I 

    Without CONSULT-II 

    1. Turn ignition switch OFF.
    2. Disconnect harness connector F33, F221
    3. Turn ignition switch ON.
      Fig 2: Disconnecting Harness Connector F33, F221
      G02402180Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check voltage between harness connector F33 terminal 5 and ground with CONSULT-II or tester.
      • Voltage: Battery voltage 
    5. Turn ignition switch OFF.
    6. Disconnect ECM harness connector.
    7. Check harness continuity between harness connector F33 and ECM as follows.

      Refer to WIRING DIAGRAM .

      Fig 3: Harness Connector F33 Terminal 5 & Ground Voltage Test
      G02402181Courtesy of NISSAN MOTOR CO., U.S.A.
      TERMINAL F33 SPECIFICATION

      Cylinder Harness connector F33 terminal ECM terminal
      1 6 23
      2 4 42
      3 2 22
      4 3 41
      5 1 21
      6 7 40
      • Continuity should exist. 
    8. Also check harness for short to ground and short to power.

    OK or NG

    • OK: GO TO  5.
    • NG: GO TO 4.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors M72, F102
    • Harness connectors F33, F221
    • Fuse block (J/B) connector M4
    • 10A fuse
    • Harness for open or short between harness connector F33 and fuse
    • Harness for open or short between harness connector F33 and ECM
      • : Repair open circuit or short to ground or short to power in harness or connectors.
  5. CHECK FUNCTION OF INJECTOR-II 

    Provide battery voltage between harness connector F221 as follows and then interrupt it. Listen to each injector operating sound.

    Fig 4: Battery Voltage Between Harness Connector F221 Specifications Table
    G02402182Courtesy of NISSAN MOTOR CO., U.S.A.
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.

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