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Home >> Ford >> 1989 >> Bronco 4.9 Y, Standard, M5OD-R2 >> Repair and Diagnosis >> Engine Performance >> System >> 4.9L CEC Tests W/Codes >> Circuit Test >> Notes
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Circuit Test: Notes

CAUTION: DO NOT disconnect ECA when checking DIS ignition systems unless directed to in circuit tests. NEVER connect ECA to breakout box when testing DIS circuits at breakout box in circuit test.
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