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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test H - Fuel Control >> Test H: Step 14 >> Notes
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Test H: Step 14: Notes

14) Check HEGO Sensor on Engines With MA Sensor  The purpose of this test is to verify HEGO sensor can generate a voltage signal of greater than 0.5 volt during KOER Self-Test. With key off and DVOM set on 20-volt scale and disconnect HEGO sensor from harness.