1998 Infiniti QX4FACTORY OEM SERVICE PROCEDURE

Data Monitor

Data monitor function allows viewing of PCM input and output signals in real time. Turn ignition off. Ensure scan tool is properly connected. Program scan tool using the following steps:

  • Select vehicle and engine selection menu (optional).
  • Select year, engine, model and any additional information requested by scan tool (optional).
  • Select GENERIC OBD-II OPTIONS.
  • Select DATA MONITOR.
  • Turn ignition on or start engine and allow to idle.
  • Follow operating instructions from scan tool menu.
  • Select input or output signal desired.
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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