Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID

DIAGNOSTICS

SERVICE MANUAL NUMBER 24

Discrete Input Circuit Check (4 of 5)

TESTING CIRCUITS FOR SHORT-TO-GROUND (–)

Step

Action

Yes

PROCEED TO

a. Disconnect BLU/TAN or BLU wire from oil pressure

switch.

b. Disconnect BLU/TAN or TAN/WHT wire from gear lube

monitor.

Step 2. Step 3.

c. Disconnect BLU/TAN wire from transmission tempera-

ture switch (if equipped).

d. Key ON, engine OFF.

Does audio warning buzzer sound?

a. Key OFF.

b. Disconnect ECM connectors.

c. Check for continuity between all wires disconnected in

Step 1. and engine ground (–).

Is there continuity on MEFI 1 or MEFI 2 BLU/TAN or

MEFI 3 BLU wire from oil pressure switch?

Step 4.

Step 3.

Is there continuity on MEFI 1 or MEFI 2 BLU/TAN or

MEFI 3 TAN/WHT wire from gear lube switch?

Is there continuity on BLU/TAN wire from transmis-

sion switch?

Circuit(s) is not shorted to ground (–). Check switches.

Repair short-to-ground (–) in affected circuit.

–

Index

Page 5G-50

90-861327--1 OCTOBER 1999

Product Specification

Categories	Mercury MerCruiser Manuals
Tags	Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID
Model Year	1998, 1999, 2000, 2001
Download File	Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step. - 895 pages
Document File Type	PDF
Copyright	Attribution Non-commercial

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Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID SKU UPC Model

Fernando Woll on Dec 09, 2014. Boat Engine

Great performance engine.
Class 1