2001 Mazda MPV DXFACTORY OEM SERVICE PROCEDURE

Fuel Cut Control System - Miata

  1. To check system operation, connect New Generation Star (49 T088 0A0) scan tool to DLC-2. DLC-2 is located under left side of instrument panel, behind fuse block cover. Ensure engine is at normal operating temperature. Allow engine to idle. Turn A/C switch off.
  2. Using scan tool, access DIAGNOSTIC DATA LINK menu, and select PCM. Highlight and select PID/DATA MONITOR AND RECORD. Select RPM and INJ. Scan tool will measure and display fuel injector pulse width. Increase engine speed to 2500 RPM, then quickly close throttle valve.
  3. Fuel injection pulse width should be zero milliseconds until engine speeds drops below 1000 RPM, then pulse width should be 2-5 milliseconds. If pulse width is as specified, Fuel cutoff system is functioning properly.
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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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