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Home >> Infiniti >> 1999 >> QX4 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - Introduction >> Self-Diagnostic System >> Fail-Safe Modes >> Notes
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Fail-Safe Modes: Notes

PCM enters a fail-safe mode if certain malfunctions are detected due to an open or short circuit. When PCM enters fail-safe mode, MIL illuminates. Refer to all diagnostic tests that apply for description and testing of circuit affected.

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