1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 395Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 395

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DIAGNOSTICS
J1-10 J2-10 J1-24 J1-3

CIRCUIT DESCRIPTION:
When the system is running on the ignition module or in crank mode, there is no voltage on CKT 424, and the ignition mo