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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 B - Vehicle Battery >> Test B: Step 2
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Test B: Step 2

2) Check Continuity of PWR GND Circuit  Turn key off and wait 10 seconds. Inspect ECA connector and pins. Install breakout box, leave ECA connected. Set DVOM on 200-ohm scale and measure resistance between test pins No. 40 and 60 at the breakout box and battery negative post. If readings are greater than 5 ohms, repair open in PWR GND circuit. Remove breakout box, reconnect components and repeat QUICK TEST. If both readings are less than 5 ohms, go to next step.