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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 11
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Test J: Step 11

11) Check Voltage at POWER-to-PUMP Circuit  Turn key off. Leave breakout box installed and ECA disconnected. Install a jumper wire between test pin No. 22 and test pins No. 40 or 60. Set DVOM on 20-volt scale. With KOEO, measure voltage between chassis ground and POWER-to-PUMP circuit at fuel pump relay. If reading is 10.5 volts or more, replace ECA and repeat QUICK TEST. If reading is less than 10.5 volts, replace fuel pump relay. Connect ECA and repeat QUICK TEST.

NOTE: There is a break in the step numbering sequence at this point, skipping from step 11) to step 20). Break is due to previous chart references to these testing procedures. No test procedures have been omitted.