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Home >> Ford >> 1984 >> Ranger 2.0 C >> Repair and Diagnosis >> Engine Performance >> System >> 2.0/2.3L MCU Testing >> Testing >> Functional Test >> Notes

Functional Test: Notes

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NOTE: Service codes are shown by voltage pulses. The first digit is indicated by a series of pulses, then the needle drops to zero for 2 seconds, then the second digit of the code is displayed. After each service code is displayed, a 5 second pause will occur and then the next code will be displayed.