Introduction and System Theory

Table of Contents Introduction and System Theory Section 1D - Glossary of Terms Glossary of Terms 1 D Glossary...1D-2 Abbreviations... 1D-5 General Reference Charts...1D-6 Manifold Vacuum and Pressure... 1D-6 Vacuum Gauge versus MAP Sensor...1D-7 Centigrade to Fahrenheit Conversion...1D-8 90-8M0086113 SEPTEMBER 2013 Page 1D-1

Glossary Ah CAN CAN Bus CAN H CAN P CAN V CAN X CCA Clean Power Closed Loop Fuel Control Command Module Cruise Control Data Harness DTS Power Harness Dual Dual Helm Amp hour. Battery rating method used in some international locations. Controller area network. A communications protocol developed for the automotive industry and adapted for use in the marine and other industries. The controller area network circuits anywhere in the system (engine harness, data harness, command module harness, junction box, etc.). CAN circuit used in joystick piloting applications to communicate between the multiple CAN X circuits. CAN circuit used to communicate engine data and propulsion information between the PCM, command module, and helm (blue and white wires). Previously referred to as CAN 1. CAN circuit used to communicate vessel data between various vessel accessories and the helm (orange and green wires). CAN circuit used to communicate throttle and shift data between the PCM, command module, and helm (yellow and brown wires). Previously referred to as CAN 2. Cold cranking amps, a rating method for batteries tested at 17.7 C (0 F). Powers up the DTS/SmartCraft system. Two wire harness that connects directly to the engine cranking battery. Also referred to as DTS power. Optional connection into a junction box when batteries are at the helm. When the emissions control system is working to adjust the air/fuel ratio to achieve an equivalency ratio of 1. Also known as PID (proportional integral derivative control strategy). Small computer that manages communication between the ERC and the PCM. Sets and controls the speed of the engine for cruising (Smart Tow tachometer only). The 14 pin harness that connects the engine to the command module harness and/or connects the command module harnesses between stations/helms. Powers up the DTS/SmartCraft system. Two wire harness that connects directly to the engine cranking battery. Also referred to as clean power. Optional connection into a junction box when batteries are at the helm. Used to describe an application of two: two engines or two controls installed on a boat. Two control/operating stations installed on a boat. EBOM Electronic bill of material. Used to identify engine and boat configuration in the G3. ECM ECT Engine Guardian System Equivalency Ratio ERC Error ESC ETC Fuel trim FWD G3 Engine control module, controls engine functions. Also referred to as PCM. Depending on context, engine coolant temperature or emission control technology. Monitors the critical sensors on the engine for any early indications of problems. The system will respond to a problem by reducing engine speed and alert the operator to a potentially damaging situation. The ratio of the actual air/fuel ratio to the ideal ratio (refer to stoichiometry). A ratio of 1 means that all of the oxygen is being used in the combustion process. If it is above or below 1.000, the system will add or subtract fuel to achieve 1.000. Electronic remote control, sends throttle and shift inputs electronically to the engine via the command module and PCM. The difference between where the system is and where we want the system to be. Also referred to as ITerm. Electronic shift control, sometimes referred to as the shift actuator. Uses a small electric motor to move a shaft that places the gearcase or transmission in forward, neutral, or reverse gear, based upon requests from the ERC (via the command module and PCM). Electronic throttle control, sometimes referred to as throttle body. Uses a small electric motor to move the position of the throttle plate, based upon requests from the ERC (via the command module and PCM). Measure by ITerm values, it is the amount of fuel above or below the expected value that the engine is adding to achieve stoichiometry or an equivalency ratio of 1. Forward gear position. Mercury's latest computer diagnostic system. Page 1D-2 90-8M0086113 SEPTEMBER 2013

IAC IAT ITerm J Box Lean Legacy Fuel Delivery Main Station MAPT MAT MCA Misfire OBD M OBD M 1 Fault OBD M 2 Fault OSC Oxidizing PCM Perturbation PID Port Post O2 Sensor Pot Pre O2 Sensor Primary Station Quad Reducing REV Rich Secondary Station Starboard Stoichiometry Idle air control valve. Used on mechanical engines only. Intake air temperature sensor, alternately known as a manifold air temperature (MAT) sensor. Engineering term, in this case describing the difference between the actual and ideal air/fuel ratio. ITermHigh, for instance indicates the bank fuel trim value is too rich. Measured in percentage. Junction box, available in 4, 6, and 8 way configurations. Air/fuel ratio greater than stoichiometric (less than 1.000 equivalency ratio). A predetermined table of air/fuel values. On boats with dual operating stations/helms, the station that normally has key switches is considered the main station, sometimes called the primary station, or helm 1. Manifold absolute pressure and temperature sensor Manifold air temperature sensor, alternately known as an intake air temperature sensor. Marine cranking amps, a rating method for batteries tested at 0 C (32 F). An unexpected change of speed in subsequent power strokes of the engine. Onboard diagnostics marine. A fault that is indicated when a critical component requires immediate action. It will likely initiate the Engine Guardian. A fault that is used mainly on emissions control components. It usually requires the fault to be present for two run cycles before it is set. Oxygen storage capacity. Measures the effectiveness of catalytic converters. Running lean to saturate the catalyst with oxygen. Propulsion control module, controls engine functions. Also referred to as an ECM. Having the fuel cycle between rich and lean in a very short period of time. Used to test the responsiveness of the emissions control system. Proportional integral derivative control strategy. Also known as closed loop fuel control. When the emissions control system is working to adjust the air/fuel ratio to achieve an equivalency ratio of 1. Refers to the left side of the boat as seen when facing forward. Shorthand for postcatalyst O2 sensor. It generates a voltage based on the difference in oxygen content of the exhaust gas and ambient air. Potentiometer used in ERC, ESC, and ETC. Shorthand for precatalyst O2 sensor. It generates a voltage based on the difference in oxygen content of the exhaust gas and ambient air. On boats with dual operating stations/helms, the station which normally has key switches is considered the primary station, sometimes called the main station or helm 1. Used to describe an application of four: four engines or controls installed on the boat. Running rich to remove all of the oxygen from the catalyst. Reverse gear position. Air/fuel ratio less than stoichiometric (greater than 1.000 equivalency ratio). On boats with dual operating stations/helms, the station which normally has only stop/start buttons and no key switches is considered the secondary station, sometimes called the auxiliary station or helm 2. Refers to the right side of the vessel as seen when facing forward. A branch of chemistry that deals with the relations among quantities in a chemical reaction. As it applies to gasoline engines, it is the ratio of air to gas in the fuel mixture that produces an exhaust gas that uses all of the oxygen in the process. The ratio is dependent upon the quality of the fuel. Gasoline with no ethanol typically has a stoichiometric ratio of 14.7 to 1. Gasoline with 10% ethanol may have a stoichiometric ratio of 14.1:1. Comparing the actual air/fuel ratio to the stoichiometric ratio, produces an equivalency ratio. Oxygen sensors measure the amount of oxygen in the exhaust gas and feed this information back to the PCM 09 to determine the equivalency ratio. If the equivalency ratio is equal to 1.000 the combustion is stoichiometric. If it is above or below 1.000, the system will add or subtract fuel to achieve 1.000. 90-8M0086113 SEPTEMBER 2013 Page 1D-3

Terminator Resistor Triple Troll Control Warning System Weather Cap The DTS terminator resistor is used as a CAN line signal conditioner. The resistor places a known load on the CAN line to ensure proper communication between the command module and the PCM. In a typical single station application, there is one terminator resistor at the engine end of the CAN line and one at the furthest end of the CAN line near the helm. Used to describe an application of three: three engines or three controls installed on the boat. Sets and controls the idle speed of the engine for trolling without using the throttle (System Tachometer and Speedometer). During an event that may damage the engine, the system sounds the warning horn and SmartCraft gauges display the warning message. Provides protection on unused connections. Page 1D-4 90-8M0086113 SEPTEMBER 2013

Abbreviations Glossary of Terms Abbreviation Definition Abbreviation Definition AD Analog to Digital IAC Idle Air Control ADC Analog to Digital Counts IAT Intake Air Temperature Adv Advance In. Hg. Inches of Mercury Amp Ampere INJ Injector BARO Barometric Pressure kpa Kilopascal B+ Battery Positive KS Knock Sensor Cal Calibration kv Kilovolt CAM Camshaft ma Milliamperes CAN Controller Area Network MAF Mass Air Flow Cat Catalyst MAP Manifold Absolute Pressure CATM Catalyst Monitor MAT Manifold Air Temperature CDS Computer Diagnostic System MIL Malfunction Indicator Lamp CKT Circuit MPI Multiport Fuel Injection CMP Camshaft Position (Sensor) MPR Main Power Relay CPS Crankshaft Position Sensor MY Model Year Crank Crankshaft O2 Oxygen Cyl Cylinder PCM Propulsion Control Module Diag Diagnostic PCV Positive Crankcase Ventilation DMM Digital Multimeter PWM Pulse Width Modulation DMT Digital Multimeter/Tachometer REF HI Reference High DTS Digital Throttle and Shift REF LO Reference Low DVOM Digital Volt Ohmmeter RPM Revolutions per Minute ECM Engine Control Module Rx Receiver ECT Emissions Control Technology SOH State of Health Engine Coolant Temperature SS Steady State EFI Electronic Fuel Injection Stbd Starboard EMCT Exhaust Manifold Coolant Temperature TACH Tachometer ERC Electronic Remote Control Tbl Table ESC Electronic Shift Control TDC Top Dead Center EST Electronic Spark Timing TPS Throttle Position Sensor ETC Electronic Throttle Control ux Micro Chi (DTS command module) EWMA Exponentially Weighted Moving Average V Volt GND Ground WOT Wide Open Throttle HVS High Voltage Switch XDRP Transducer Power (sensor power) 90-8M0086113 SEPTEMBER 2013 Page 1D-5

General Reference Charts Manifold Vacuum and Pressure Manifold Vacuum Absolute Pressure Manifold Vacuum Absolute Pressure psi psi kpa psi psi kpa 0 14.7 101.3 7 1/4 7.45 51.4 1/4 14.45 99.6 7 1/2 7.2 49.6 1/2 14.2 97.9 7 3/4 6.95 47.9 3/4 13.95 96.2 8 6.7 46.2 1 13.7 94.4 8 1/4 6.45 44.5 1 1/4 13.45 92.7 8 1/2 6.2 42.7 1 1/2 13.2 91.0 8 3/4 5.95 41.0 1 3/4 12.95 89.3 9 5.7 39.3 2 12.7 87.5 9 1/4 5.45 37.6 2 1/4 12.45 85.8 9 1/2 5.2 35.8 2 1/2 12.2 84.1 9 3/4 4.95 34.1 2 3/4 11.95 82.4 10 4.7 32.4 3 11.7 80.6 10 1/4 4.45 30.7 3 1/4 11.45 78.9 10 1/2 4.2 29.0 3 1/2 11.2 77.2 10 3/4 3.95 27.2 3 3/4 10.95 75.5 11 3.7 25.5 4 10.7 73.8 11 1/4 3.45 23.8 4 1/4 10.45 72.0 11 1/2 3.2 22.1 4 1/2 10.2 70.3 11 3/4 2.95 20.3 4 3/4 9.95 68.6 12 2.7 18.6 5 9.7 66.9 12 1/4 2.45 16.9 5 1/4 9.45 65.1 12 1/2 2.2 15.2 5 1/2 9.2 63.4 12 3/4 1.95 13.4 5 3/4 8.95 61.7 13 1.7 11.7 6 8.7 60.0 13 1/4 1.45 10.0 6 1/4 8.45 58.2 13 1/2 1.2 8.3 6 1/2 8.2 56.5 13 3/4 0.95 6.5 6 3/4 7.95 54.8 14 0.7 4.8 7 7.7 53.1 14 1/4 0.45 3.1 14 1/2 0.2 1.4 Page 1D-6 90-8M0086113 SEPTEMBER 2013

Vacuum Gauge versus MAP Sensor MAP Sensor (Volt) a MAP Sensor (kpa absolute) MAP Sensor (in-hg absolute) MAP Sensor (psi) d b c Hand Held Vacuum Gauge (in-hg) e 17123 This graph is correct at sea level only a - MAP Sensor (Volt) b - MAP Sensor (kpa absolute) c - Hand Held Vacuum Gauge (in.hg) d - MAP Sensor (in.hg absolute) e - MAP Sensor (psi) 90-8M0086113 SEPTEMBER 2013 Page 1D-7

Centigrade to Fahrenheit Conversion Centigrade Fahrenheit Centigrade Fahrenheit 55 67 85 185 50 58 90 194 45 49 95 203 40 40 100 212 35 31 105 221 30 22 110 230 25 13 115 239 20 4 120 248 15 5 125 257 10 14 130 266 5 23 135 275 0 32 140 284 5 41 145 293 10 50 150 302 15 59 155 311 20 68 160 320 25 77 165 329 30 86 170 338 35 95 175 347 40 104 180 356 45 113 185 365 50 122 190 374 55 131 195 383 60 140 200 392 65 149 205 401 70 158 210 410 75 167 215 419 80 176 220 428 Page 1D-8 90-8M0086113 SEPTEMBER 2013