1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 358Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 358

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DIAGNOSTICS
CIRCUIT DESCRIPTION:
In the Distributor Ignition (Dl) system and the fuel injector circuit, the supply voltage comes from the EFI system relayFrom the EFI system relay, CKT 902

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