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Home >> Nissan-Datsun >> 2015 >> Sentra SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) >> System Description >> Diagnosis System (ECM) >> On Board Diagnosis Function >> Malfunction Warning Mode >> Operation Procedure
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Operation Procedure

  1. Turn ignition switch ON.
  2. Check that MIL illuminates.

    If it remains OFF, check MIL circuit. Refer to SYSTEM READINESS TEST (SRT) CODE .

  3. Start engine and let it idle.
    • For two trip detection logic diagnoses, ECM turns on MIL when it detects the same malfunction twice in the two consecutive driving cycles.
    • For 1st trip detection logic diagnoses, ECM turns on MIL when it detects a malfunction in one driving cycle.
    • ECM blinks MIL when it detects a malfunction that may damage the three way catalyst (misfire).
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