806201 Volvo.Penta Gear

Engine Functions
Electronic Governing
An electronic governor with a full speed range is used. The electronic governor is isochronous at Low Idle through High Idle or the programmed top engine limit.Fuel to Air Ratio Control (FARC)
The electronic control system has full control of the fuel delivery to the engine. The mechanical Fuel Ratio Control is eliminated. Electronic control of the fuel to air ratio provides optimum performance while limiting emissions.Fuel Injection Timing
Fuel injection timing varies as a function of engine operating conditions to optimize the engine performance. Engine performance is determined by the following conditions:* Cylinder pressure* Emissions* Exhaust temperature* Fuel consumptionShaping of Torque Rise
Electronic controls provide increased flexibility to customize the torque curve over a wide range of engine speeds.Engine Monitoring Feature
The engine monitoring mode determines the level of action that is taken by the Electronic Control Module (ECM) in response to a condition that can damage the engine. These conditions are identified by the ECM from the signals that are produced by the following sensors:* Coolant level sensor* Engine coolant temperature sensor* Engine oil pressure sensor* Inlet air temperature sensor* Transmission pressure sensor* Transmission temperature sensorEngine Monitoring Mode
The engine monitoring mode can be programmed to the following settings:* * DERATE is the factor default setting.ECM Engine Monitoring Programmed to
When the engine monitoring is programmed to , the following parameters are monitored:* Engine coolant level (if enabled)* Engine coolant temperature* Engine oil pressure* Inlet air temperature* Transmission oil pressure* Transmission oil temperatureWhen is selected, the engine will not derate.When an event code is active, the following lamps will be activated:* The diagnostic lamp will flash the flash code.* The alarm for the sensor will come on (if equipped).* The warning lamp will turn on (warning) or flash (derate). Table 1 provides the following information:* The diagnostic event code (EID)* The description of the event code* The status of warning lamp when the diagnostic code is active* The effect of derateTable 1: Engine Monitoring Programmed to ECM Engine Monitoring Programmed to DERATE
If the normal operating conditions are exceeded and the engine monitoring is programmed to DERATE, the ECM will alter the engine performance in steps. The process that reduces the performance of the engine is called "derate."When the engine is derated, the ECM reduces the engine performance in steps until the excessive operating condition is returned to the normal range. The following parameters control the derate process:* The coolant temperature is excessive.* The oil pressure is too low.When the engine monitoring is programmed to DERATE, the following parameters will derate the engine:* Engine coolant level (if enabled)* Engine coolant temperature* Engine oil pressure* Inlet air temperatureWhen the engine is derated, power is derated. Table 2 provides the following information:* the diagnostic event code (EID)* the description of the event code* the condition of the warning lamp when the diagnostic code is active* the effect of derate on the engineTable 2: Engine Monitoring Programmed to DERATE Required Tools
Installation Tools
Basic electrical installation tools required are listed below. Additional sensors, lamps, connectors, etc, may be required.Table 3: Basic Electrical Installation Tools Caterpillar Electronic Technician (Cat ET) Electronic Service Tool
Cat ET can display the following information:* Parameters* Logged event codes* Active diagnostic codes and logged diagnostic codes* Engine configuration* Current totals* Job historyCat ET can be used by the technician to perform the following functions:* Diagnostic tests* Calibrate the engine speed/timing sensors* Flash programming* Select and/or program parameters* Data logging* Customize the Programmable Monitoring System* Customize the maintenance schedule* Establish the security of parametersTable 4: Required Tools for Cat ET Connecting Cat ET and the Communication Adapter
Figure 1 - Connecting Cat ET Use the following procedure to connect Cat ET and the Communication Adapter to the engine.1. Turn off all switched power to the ECM. If the switched power is not shut off, the engine may start.2. Connect the 160-0141 Adapter Cable between the communication adapter and the PC.3. Connect the 207-6845 Adapter Cable between the communication adapter and the service tool connector.4. Turn on the switched power to the ECM. The ECM must be powered in order for Cat ET to operate. Cat ET will operate while the engine is running or stopped.Sensors and Electrical Connectors
Component Diagram
Figure 2 - 12 Cylinder Marine Engine Components Sensor and Wiring Harness Connector Locations
Figure 3 - Sensor Locations and Wiring Harness Connectors on Top of the Engine Component and Wiring Harness Connector Locations
Figure 4 - Component and Wiring Harness Connector Locations Right and Left Hand Service Options
Figure 5 - Right and Left Hand Service Options Switch Requirements and Considerations
Switch Specifications
All OEM provided switches connected to the electronic control system must be a two wire design and externally connected to the Negative Battery Bus Bar. Internally grounded or case grounded switches must not be used.Voltages supplied to switches by the electronic control system will normally not exceed 24 VDC. Normal current through the switches will not exceed 5.0 milliampere.Contact chatter and momentary opening or closing of the switches should not exceed 100 milliseconds in duration. The switches should not open or close due to vibration or shock normally found in the application.Contact plating should not corrode or oxidize. Gold plated switch contacts are recommended.When a switch contact is opened or the wiring harness has an open circuit, the internal pull up voltages of the ECM force the respective input to the positive battery. The closure of a switch that is installed by the OEM must short circuit the switch input to the Negative Battery Bus Bar connection of the ECM connector P1.All switches are supplied by the OEM. If a problem occurs that has an undertermined cause, install an Electronic Service Tool. Observe the display status screen of the Electronic Service Tool to determine the status of the switch.Voltage Thresholds Measured At The ECM
When any of the switch contact