2011 Infiniti M37 BaseFACTORY OEM SERVICE PROCEDURE

Component Inspection (Ignition Coil with Power Transistor)

  1. CHECK IGNITION COIL WITH POWER TRANSISTOR-I
    1. Turn ignition switch OFF.
    2. Disconnect ignition coil harness connector.
    3. Check resistance between ignition coil terminals as per the following.
      RESISTANCE REFERENCE

      Terminals Resistance (Ξ©) [at 25Β°C (77Β°F)]
      1 and 2 Except 0 or ∞
      1 and 3 Except 0
      2 and 3

      Is the inspection result normal?Β 

      YES: GO TO 2.

      NO: Replace malfunctioning ignition coil with power transistor.

  2. CHECK IGNITION COIL WITH POWER TRANSISTOR-II
    CAUTION: Perform the following procedure in a place where with no combustible objects and good ventilation.
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Remove fuel pump fuse (1) in IPDM E/R (2) to release fuel pressure.
      NOTE: Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following procedure.
    4. Start engine.
    5. After engine stalls, crank it two or three times to release all fuel pressure.
    6. Turn ignition switch OFF.
    7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.
      Fig 1: Identifying Fuel Pump Fuse And IPDM E/R
      G05207189Courtesy of NISSAN MOTOR CO., U.S.A.
    8. Remove ignition coil and spark plug of the cylinder to be checked.
    9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
    10. Connect spark plug and harness connector to ignition coil.
    11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 - 0.66 in) between the edge of the spark plug and grounded metal portion as shown in the figure.
    12. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal portion.

      Spark should be generated.Β 

      Fig 2: Checking For Spark
      G04886523Courtesy of NISSAN MOTOR CO., U.S.A.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.