0209560 OWNERS MANUAL JOHNSON
J25ECTD
OWNERS
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Number on catalog scheme: 20956
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J25ECTD
JOHNSON
BRP JOHNSON entire parts catalog list:
Information:
Harness for the Left Rail
Illustration 1 g01618547
Connectors that are on the harness for the left rail
(1) Sensor for the left turbocharger turbine inlet temperature
(2) Connectors for the injectors that are on the left bank of the engine
(3) Left rail connector (70-pin connector)
(4) Left intake manifold air temperature sensor
(5) Left intake manifold pressure sensor
(6) Machine interface connector
(7) Connector for the tertiary speed/timing sensor (LH)
(8) Temperature sensor at the outlet of the coolant pump
(9) Connector for the fuel rail pressure sensor
(10) Sensor for the machine tachometer
(11) Harness for the prelubrication pump
(12) Fast fill oil level switch
(13) Oil level switch for low oil level
(14) Engine ground stud
(15) Connector for the primary speed/timing sensor The harness for the left rail contains the wiring for the electrical components that are on the left side of the engine.Harness for the Right Rail
Illustration 2 g01618712
(16) Connector for the secondary speed/timing sensor (RH)
(17) Connectors for the injectors that are on the right bank of the engine
(18) Sensor connector for the right turbocharger turbine inlet temperature
(19) Coolant temperature sensor for the outlet of the engine block
(20) Pressure sensor for the outlet of the coolant pump
(21) Right rail connector (70-pin connector)
(22) Right intake manifold pressure sensor
(23) Right intake manifold air temperature sensor
(24) Filtered oil pressure sensor
(25) Filtered oil temperature sensor
(26) Unfiltered oil pressure sensor
(27) Crankcase pressure sensor
(28) Connector for the oil renewal solenoid
(29) Connector for the fuel control valve controller
(30) Connector for the power module that is for the fuel control valve controller
(31) Connector for the temperature sensor that is for the high-pressure fuel system
(32) Connectors for the machine air conditioning system
(33) Filtered fuel pressure sensor
(34) Temperature sensor for the low-pressure fuel system
(35) Pressure sensor at the inlet of the fuel transfer pump
(36) Manual switch for the electric fuel priming pump
(37) Unfiltered fuel pressure sensor
(38) Power connector for the electric fuel priming pump
(39) Connector for the ground level shutdown switch The harness for the right rail contains the wiring for the electrical components that are on the right side of the engine.Engine Control Systems
Engine Controllers
Illustration 3 g01647393
Diagram of the electronic controllers that are for the engine
(40) Engine ECM
(41) Local CAN data link
(42) Global CAN data link
(43) Controller for the fuel control valve
(44) Machine interface connector (70-pin connector)
(45) Caterpillar Electronic Technician (ET)
(46) Temperature control module (TCM) This engine is designed for electronic control of most engine operating functions. A network of electronic controllers will communicate through the data links in order to share information that is related to the operation of the engine. Refer to Illustration 3 for an overview of the control modules for this engine application. The control modules that are on the data links share information in order to provide optimum operation of the engine and of the machine. Refer to Troubleshooting, "Data Link Features" for further information that is related to the data links for this application.Electronic Control Module (ECM)
Illustration 4 g01496913
Engine ECM
The engine ECM consists of two main components, the control computer (hardware) and the flash file (software). The control computer consists of a microprocessor and electronic circuitry. The flash file contains the operational characteristics of the engine. The operating maps that influence engine performance also contained in the flash file.The engine ECM provides engine control by altering the signal that is sent to the fuel injector solenoids. By controlling the timing and duration of the injector signals, the engine ECM controls the engine speed and the engine power.The engine ECM provides control for various subsystem components. The following subsystem components are controlled by the engine ECM:
Engine prelube system
Ether system
Fuel system
System for engine cranking
Various other componentsThe engine ECM also collects data in order to provide information via the data links on various aspects of engine operation.Controller for the Fuel Control Valve
Illustration 5 g01647415
Location of the fuel system components
(47) Power module
(48) Controller for the FCV The controller for the FCV receives throttle commands from the engine ECM. The controller translates the command to a valve position for the FCV. The ECM provides a PWM output in order to drive the throttle signal for the controller. Messages are communicated over the local CAN data link in order to provide a backup signal for the throttle control.A power module is used to supply electrical power to the controller for the fuel control valve. The power module is used to convert battery voltage (24 VDC) to 14.0 1.5 VDC that is used by the controller. This power is available while the battery disconnect switch is in the run position.A keyswitch input is provided in order to bring the controller out of sleep mode.Temperature Control Module (TCM)
Illustration 6 g01647416
Components of the electronic fluid temperature control
(49) TCM
(50) Electric motor
(51) Three-way valve The electronic fluid temperature control provides accurate control for the engine cooling system. The system provides self-diagnostic functions and increased service reliability. These advances help to reduce the repair times and warranty claims that are associated with the cooling system.The electronic fluid temperature control consists of a three-way valve that directs coolant flow th
Illustration 1 g01618547
Connectors that are on the harness for the left rail
(1) Sensor for the left turbocharger turbine inlet temperature
(2) Connectors for the injectors that are on the left bank of the engine
(3) Left rail connector (70-pin connector)
(4) Left intake manifold air temperature sensor
(5) Left intake manifold pressure sensor
(6) Machine interface connector
(7) Connector for the tertiary speed/timing sensor (LH)
(8) Temperature sensor at the outlet of the coolant pump
(9) Connector for the fuel rail pressure sensor
(10) Sensor for the machine tachometer
(11) Harness for the prelubrication pump
(12) Fast fill oil level switch
(13) Oil level switch for low oil level
(14) Engine ground stud
(15) Connector for the primary speed/timing sensor The harness for the left rail contains the wiring for the electrical components that are on the left side of the engine.Harness for the Right Rail
Illustration 2 g01618712
(16) Connector for the secondary speed/timing sensor (RH)
(17) Connectors for the injectors that are on the right bank of the engine
(18) Sensor connector for the right turbocharger turbine inlet temperature
(19) Coolant temperature sensor for the outlet of the engine block
(20) Pressure sensor for the outlet of the coolant pump
(21) Right rail connector (70-pin connector)
(22) Right intake manifold pressure sensor
(23) Right intake manifold air temperature sensor
(24) Filtered oil pressure sensor
(25) Filtered oil temperature sensor
(26) Unfiltered oil pressure sensor
(27) Crankcase pressure sensor
(28) Connector for the oil renewal solenoid
(29) Connector for the fuel control valve controller
(30) Connector for the power module that is for the fuel control valve controller
(31) Connector for the temperature sensor that is for the high-pressure fuel system
(32) Connectors for the machine air conditioning system
(33) Filtered fuel pressure sensor
(34) Temperature sensor for the low-pressure fuel system
(35) Pressure sensor at the inlet of the fuel transfer pump
(36) Manual switch for the electric fuel priming pump
(37) Unfiltered fuel pressure sensor
(38) Power connector for the electric fuel priming pump
(39) Connector for the ground level shutdown switch The harness for the right rail contains the wiring for the electrical components that are on the right side of the engine.Engine Control Systems
Engine Controllers
Illustration 3 g01647393
Diagram of the electronic controllers that are for the engine
(40) Engine ECM
(41) Local CAN data link
(42) Global CAN data link
(43) Controller for the fuel control valve
(44) Machine interface connector (70-pin connector)
(45) Caterpillar Electronic Technician (ET)
(46) Temperature control module (TCM) This engine is designed for electronic control of most engine operating functions. A network of electronic controllers will communicate through the data links in order to share information that is related to the operation of the engine. Refer to Illustration 3 for an overview of the control modules for this engine application. The control modules that are on the data links share information in order to provide optimum operation of the engine and of the machine. Refer to Troubleshooting, "Data Link Features" for further information that is related to the data links for this application.Electronic Control Module (ECM)
Illustration 4 g01496913
Engine ECM
The engine ECM consists of two main components, the control computer (hardware) and the flash file (software). The control computer consists of a microprocessor and electronic circuitry. The flash file contains the operational characteristics of the engine. The operating maps that influence engine performance also contained in the flash file.The engine ECM provides engine control by altering the signal that is sent to the fuel injector solenoids. By controlling the timing and duration of the injector signals, the engine ECM controls the engine speed and the engine power.The engine ECM provides control for various subsystem components. The following subsystem components are controlled by the engine ECM:
Engine prelube system
Ether system
Fuel system
System for engine cranking
Various other componentsThe engine ECM also collects data in order to provide information via the data links on various aspects of engine operation.Controller for the Fuel Control Valve
Illustration 5 g01647415
Location of the fuel system components
(47) Power module
(48) Controller for the FCV The controller for the FCV receives throttle commands from the engine ECM. The controller translates the command to a valve position for the FCV. The ECM provides a PWM output in order to drive the throttle signal for the controller. Messages are communicated over the local CAN data link in order to provide a backup signal for the throttle control.A power module is used to supply electrical power to the controller for the fuel control valve. The power module is used to convert battery voltage (24 VDC) to 14.0 1.5 VDC that is used by the controller. This power is available while the battery disconnect switch is in the run position.A keyswitch input is provided in order to bring the controller out of sleep mode.Temperature Control Module (TCM)
Illustration 6 g01647416
Components of the electronic fluid temperature control
(49) TCM
(50) Electric motor
(51) Three-way valve The electronic fluid temperature control provides accurate control for the engine cooling system. The system provides self-diagnostic functions and increased service reliability. These advances help to reduce the repair times and warranty claims that are associated with the cooling system.The electronic fluid temperature control consists of a three-way valve that directs coolant flow th
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