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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 15 >> All Other Engines

All Other Engines

Measure voltage between test pin No. 50 at the breakout box and battery negative post. If voltage is between .2 and 1.5 volts replace ECA, remove breakout box, reconnect components and repeat QUICK TEST. If voltage is not between .2 and 1.5 volts, replace MAF sensor, remove breakout box, reconnect components and repeat QUICK TEST.

NOTE: There is a break in the step numbering sequence at this point, skipping from step 15) to step 20). Break is due to previous chart references to these testing procedures. No test procedures have been omitted.