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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 J - Fuel Pump Circuit >> Test J: Step 26
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Test J: Step 26

26) Check Continuity Between FPM Circuit & Ground  Turn key off. Install breakout box and disconnect ECA. Disconnect fuel pump relay. Set DVOM on 200-ohm scale and measure resistance between test pin No. 8 (test pin No. 19 on 5.0L) at the breakout box and battery negative terminal. If resistance is less than 10 ohms, replace ECA, remove breakout box, reconnect fuel pump relay and repeat QUICK TEST. If resistance is more than 10 ohms, remove test set-up and check the following: open circuit in fuel pump, poor ground connection at fuel pump, or an open in POWER-to-PUMP circuit.

NOTE: There is a break in the step numbering sequence at this point, skipping from step 26) to step 30). Break is due to previous chart references to these testing procedures. No test procedures have been omitted.