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Home >> Isuzu >> 1989 >> I-Mark LS >> Repair and Diagnosis >> Engine Performance >> System >> System/Component Tests - CARBURETED >> Computerized Engine Controls >> Control Unit >> ECM Constant Power Circuits
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ECM Constant Power Circuits

ECM should always have battery power to retain memory. Check Red/White wire that is powered by fuse link B (Red) in main fuse box near battery.

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