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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test DP - Vehicle Speed Sensor (VSS) >> Test DP - Introduction >> Preliminary Instructions (A/T Equipped Vehicles)
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Preliminary Instructions (A/T Equipped Vehicles)

Record and clear Continuous Memory Codes. Warm engine to normal operating temperature. In Low gear, accelerate hard to 25 MPH and coast down to a stop. Shut off engine. Perform KOEO Self-Test. Go to step 1).