2002 Infiniti Q45FACTORY OEM SERVICE PROCEDURE

Key Switch Check

  1. CHECK KEY SWITCHΒ 

    With CONSULT-II

    • Check ignition key cylinder switch "IGN KEY SW" in "DATA MONITOR" mode with CONSULT-II. When key is inserted in ignition key cylinder:

    IGN KEY SW ONΒ 

    When key is removed from ignition key cylinder:

    IGN KEY SW OFFΒ 

    With out CONSULT-II

    1. Disconnect BCM connector.
    2. Check voltage between harness connector M4 terminals 69 (PU/W) and body ground.
    Fig 1: Key Switch Check Voltage Table
    G02018095Courtesy 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:

  • 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.

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