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Home >> Volvo >> 1991 >> 240 SE, AW70L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Computerized Engine Controls >> Notes
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Computerized Engine Controls: Notes

CAUTION: Ensure ignition switch is in OFF position before disconnecting or connecting ignition or fuel injection Electronic Control Unit (ECU). Otherwise, damage to ECU can result.
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