1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 348Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 348

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DIAGNOSTICS

J2-19 J2-27

ENGINE COOLANT TEMPERATURE (ECT)

814 BLK 410 YEL

ENGINE COOLANT TEMPERATURE (ECT) SENSOR SIGNAL KNOCK SENSOR 1

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