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Home >> Cadillac >> 1989 >> Seville STS >> Repair and Diagnosis >> Engine Performance >> System >> DFI ECM Tests W/Codes >> Diagnostic Charts >> ECM Code EO21 - Shorted TPS Circuit >> Test Conditions

July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Test Conditions

Engine speed between 25-1000 RPM.

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