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Home >> Ford >> 1985 >> Ranger 2.0 C >> Repair and Diagnosis >> Engine Performance >> System >> Idle Speed Control System >> Diagnosis & Testing >> Test 4: Code 12 >> Verifying DC Motor Movement
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Verifying DC Motor Movement

Bring vehicle to operating temperature. Initialize self-test. Visually verify DC motor movement during self-test. If there is movement, go to Test 2 step 4). If not, set idle adjustment.