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Mercury V6 175 User Manual

Mercury V6 175
302 pages
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DIAGNOSTIC
MANUAL
V6 175
/
200
/
225 V8 200
/
225
/
250
/
300 FourStroke Outboard
www.brunswick-marine.com
Parc Industriel de Petit-Rechain
B-4800 Verviers, Belgium
90-8M0146617 JULY 2018
90-8M0146617
JULY 2018
www.mercurymarine.com.au
41-71 Bessemer Drive
Dandenong South, Victoria 3175 Australia
www.mercurymarine.com
P.O. Box 1939
Fond du Lac, WI 54936-1939 USA
© Mercury Marine. All rights reserved.
Printed in U.S.A.
DIAGNOSTIC MANUAL
V6 175
/
200
/
225
V8 200
/
225
/
250
/
300
FourStroke
Outboard
Starting serial number 2B529482

Table of Contents

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Mercury V6 175 Specifications

General IconGeneral
Engine TypeV6
Horsepower175 HP
Displacement2.6 L
Fuel SystemElectronic Fuel Injection (EFI)
Starting SystemElectric
Full Throttle RPM Range5000-5800 RPM
SteeringRemote
Gear Ratio1.85:1
Alternator Output60 amp / 756 watt
Shaft Length20 in / 25 in
Cooling SystemWater-cooled with thermostat
Weight475 lbs (215 kg)

Summary

Notice to Users of This Manual

Precautions

General safety guidelines to be followed while working on the product, including precautions for electrical systems.

Replacement Parts

States that using non-recommended parts voids warranty on damaged parts.

Cleanliness and Care of Product

Copyright and Trademark Information

Details Mercury Marine's copyright and registered trademarks.

Important Information

Section 1A - How to Use This Manual

Provides guidance on how to effectively use the diagnostic manual for service procedures.

Models Covered

Lists the Mercury outboard engines and serial number ranges covered by this diagnostic manual.

Manual Organization

Explains the structure and content of each section within the manual.

Section 1B - System Theory

Details the speed/density theory, O2 sensor function, and open/closed-loop operation.

Section 1C - Emissions

Covers exhaust emission standards, types of emissions, and control methods.

Section 1D - Glossary, Reference Charts, and Conversions

Provides definitions, abbreviations, charts, and conversion factors for technical terms.

PCM 112

Section 2A - PCM 112 Important Information and Pinouts

Details critical information, pinouts, and test equipment for the PCM 112 module.

General Troubleshooting and CDS G3

Section 3A - General Troubleshooting

Discusses audio warning systems, MFD faults, and general troubleshooting approaches.

Section 3B - Troubleshooting with the Computer Diagnostic System (CDS G3)

Guides on using CDS G3 for diagnostics, operation, and fault resolution.

Section 3C - CDS G3—Live Data

Explains how to use the Live Data screen in CDS G3 to monitor engine parameters.

Section 3D - CDS G3—PCM 112 Freeze Frame Data

Details how to access and interpret Freeze Frame data for fault diagnosis.

Section 3E - CDS G3—Diagnostics Screen

Outlines the various diagnostic tests and set-up screens available in CDS G3.

Section 3F - CDS G3—Module Reflash

Provides instructions on how to reflash PCMs and other vessel control modules using CDS G3.

Fault Codes

Section 4A - Fault Codes

Lists Mercury Universal Fault Codes (UFC) and their corresponding PCM fault names and descriptions.

Sensors, Actuators, Relays, and Accessories

Section 5A - Sensors

Details various sensors, their tests, removal, and installation procedures.

Sensors, Actuators, Relays, and Accessories

Section 5B - Actuators and Relays

Covers Electronic Throttle Control (ETC), Fuel Pump Relay, Start Relay, and Shift Actuator.

Sensors, Actuators, Relays, and Accessories

Section 5C - Accessories

Details Advanced Sound Control, Moving Propeller Alert, Power Steering, and Analog Gauges.

Electrical Systems

Section 6A - Ignition

Covers ignition system specifications, coils, tests, and wiring diagrams for V6 and V8 models.

Electrical Systems

Section 6B - Charging and Starting System

Details battery specifications, charging system components, and starting system checks.

Electrical Systems

Section 6C - Conventional Midsection (CMS) Power Trim

Covers electrical system troubleshooting for CMS power trim components and circuits.

Electrical Systems

Section 6D - Advanced Midsection (AMS) Power Trim

Details electrical system troubleshooting for AMS power trim components and circuits.

Fuel System

Section 7A - Fuel System

Covers fuel system specifications, overview, theory of operation, and components like pumps and filters.

Fuel System

Section 7B - Troubleshooting and Diagnostics

Provides guidance on troubleshooting fuel components like antisiphon valves, FSM, and injectors.

Color Diagrams

Section 8A - SmartCraft Circuit Diagrams

Provides wiring diagrams for SmartCraft components, including data harnesses and CAN circuits.

Color Diagrams

Section 8B - Engine Harness Diagrams

Includes wiring diagrams for 4.6L V8 DTS, 4.6L V8 Non-DTS, 3.4L V6 DTS, and 3.4L V6 Non-DTS.

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