Mercury MERCRUISER Service Manual

Electrical System
Section 4D - Instrumentation and Controls
Table of Contents
Precautions........................................................................4D-2
General Information........................................................... 4D-2
Configuring the PCM Tachometer Signal (Non‑DTS)........4D-3
Cleaning the Gauges......................................................... 4D-3
Analog Gauges.................................................................. 4D-3
Gauge Lighting Options..............................................4D-3
Removal..................................................................... 4D-3
Installation.................................................................. 4D-3
Analog Gauge Testing....................................................... 4D-4
Oil Pressure, Fuel Level, and Coolant Temperature
Gauges................................................................... 4D-4
Battery or Voltage Gauge........................................... 4D-5
Cruiselog (Engine Hour Meter)...................................4D-5
Tachometer................................................................ 4D-6
Speedometer.............................................................. 4D-6
SmartCraft Instrumentation................................................4D-6
CAN Bus Overview.....................................................4D-7
Termination Resistors.................................................4D-7
Boat Harnesses and Installation Connections................... 4D-7
Engine Harness and Accessory Power Supply.......... 4D-7
Boat Wiring................................................................. 4D-7
Boat Harness Installation Guidelines—MPI Sterndrive
................................................................................ 4D-8
System Link Gauges........................................................4D-14
System Link Gauge Connections............................. 4D-14
System Link Gauge Extension Harness Installation
.............................................................................. 4D-14
Warning System.............................................................. 4D-14
Service Engine Light and OBD‑M MIL Kit................ 4D-14
Audio Warning System............................................. 4D-15
Guardian Strategy.................................................... 4D-16
Wiring Diagrams.............................................................. 4D-16
Transom Harness—MPI .......................................... 4D-16
Helm Mechanical...................................................... 4D-20
Analog Gauge Harness............................................ 4D-22
MerCruiser Remote Control Only to the Harness
Assembly (Control Harness Assembly)................ 4D-23
Power Trim System with a MerCruiser Remote
Control.................................................................. 4D-24
Power Trim System with an Outboard Remote
Control.................................................................. 4D-25
14‑Pin Engine Harness Connector........................... 4D-26
Axius Helm Installation (if Equipped) .............................. 4D-26
DTS Information and Installation..................................... 4D-26
Special Tools ‑ DTS Installation............................... 4D-26
Configuring the PCM Using the CDS....................... 4D-26
Installation Guidelines for DTS System Components
.............................................................................. 4D-26
Weather Caps...........................................................4D-27
DTS Battery Specifications.......................................4D-27
Junction Box (If Equipped)....................................... 4D-28
Instrumentation and Controls
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 4D-1
4
D

Mercury MERCRUISER Specifications

General

Number of Cylinders	4, 6, 8
Engine Type	Inboard/Outboard (Sterndrive)
Fuel Type	Gasoline
Aspiration	Naturally Aspirated
Cooling System	Water Cooled
Weight	Varies by model
Cylinder Configuration	Inline
Displacement Range	3.0L-8.2L