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Home >> Isuzu >> 1985 >> I-Mark 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Testing >> Diagnostic Procedure >> Entering Diagnostic Mode
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Entering Diagnostic Mode

  1. Turn ignition "ON". "CHECK ENGINE" lamp should glow. Locate diagnostic test leads taped to wire harness: To right and above steering column.
  2. Connect terminals together and note "CHECK ENGINE" lamp. If any trouble codes are stored in ECM memory, the "CHECK ENGINE" lamp will flash 2-digit codes. Trouble codes will be displayed from lowest to highest numbered code (3 times each) and be repeated as long as the diagnostic terminals are connected.
NOTE: Trouble codes 12 through 15 may be indicated even when all systems are functioning normally.
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