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Home >> Infiniti >> 2000 >> QX4 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - Introduction >> Self-Diagnostic System >> Fail-Safe Modes >> ECM (DTCs Not Accessible)
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ECM (DTCs Not Accessible)

Maximum engine speed is 3000 RPM. Fuel injection operates in simultaneous mode. Ignition timing is fixed. Fuel pump relay remains on when engine is running and off when engine stalls. IACV-AAC valve is fully open. Cooling fans remain on at high speed when engine is running and turn off when engine stalls (Maxima only).

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