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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 Dc - Mass Airflow (MAF) Sensor >> Test Dc: Step 14 >> All Other Engines

All Other Engines

Measure resistance between test pin No. 50 and test pins No. 9, 40, and 60 at the breakout box. If all resistances are less than 10 k/ohms, remove breakout box. Replace ECA, remove breakout box, reconnect components and repeat QUICK TEST. If resistances are greater than 10 k/ohms, go to next step.