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Home >> Geo >> 1991 >> Tracker Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Code Charts >> Chart A1, No Check Engine Light
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Chart A1, No Check Engine Light

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Substitutes known good ground for ECM-provided ground.
  2. Checks circuit for open.
  3. Checks bulb, instrument panel connector and printed circuit board.
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