37531 Mercruiser PLUG, OIL CHANNEL-CYLINDER BLOCK

Interface Harnesses
Illustration 1 g03322158
Components of the (right side engine view)
(1) Right rail connector
(2) Harness for the right rail
(3) Conduit Wiring Harnesses
Harness for the Left Rail
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The harness for the left rail contains the wiring for the electrical components that are on the left side of the engine.
(4) Connector for the left turbocharger turbine inlet temperature
(5) Connector for the turbocharger compressor inlet pressure sensor (No. 2 (left side))
(6) Connector for the turbocharger compressor inlet pressure sensor (No. 1 (left side))
(7) Connector for the inlet air temperature sensor
(8) Connector for the secondary camshaft/timing sensor
(9) Connectors for the injectors that are on the left bank of the engine
(10) Connector EL-C29 to CR-C1
(11) Connector turbo speed jumper
(12) Connector for the coolant temperature sensor at the engine block outlet
(13) Connector for the coolant pressure sensor at the engine block outlet
(14) Connector for the fuel rail pressure sensor
(15) Connector for the prelube relay jumper
(16) Connector for the starter relay jumper
(17) Connector for the crankshaft speed/timing sensor
(18) Connector for the magnetic pickup sensor
(19) Left rail connector at the control box (70-pin connector) Harness for the Right Rail
Illustration 3 g03322527
The harness for the right rail contains the wiring for the electrical components that are on the right side of the engine.
(20) Connector for the turbocharger compressor inlet pressure sensor (No. 4 (right side))
(21) Connector for the turbocharger compressor inlet pressure sensor (No. 3 (right side))
(22) Sensor connector for the right turbocharger turbine inlet temperature
(23) Connectors for the injectors that are on the right bank of the engine
(24) Connector for the primary camshaft/timing sensor (right side)
(25) Connector for the right turbocharger speed sensor
(26) Connector for the air intake manifold temperature sensor
(27) Connector for the air intake manifold pressure sensor
(28) Connector for the starting motor (right side)
(29) Connector for the temperature sensor at the water pump outlet for the separate circuit aftercooler system
(30) Connector for the pressure sensor at the water pump outlet for the separate circuit aftercooler system
(31) Connector for the electric fuel priming pump switch
(32) Connector for the crankcase pressure sensor
(33) Connector for the fuel transfer pressure sensor (unfiltered)
(34) Connector for the fuel transfer pressure sensor (filtered)
(35) Connector for the fuel secondary filter outlet temperature sensor
(36) Connector for the fuel control valve controller
(37) Connector for the HPC rail temperature sensor
(38) Connector for the fuel priming pump
(39) Right rail connector at the control box (70-pin connector) Front Harness
Illustration 4 g03322550
The engine front harness contains the wiring for the electrical components that are at the front of the engine.
(40) Connector for the temperature control module
(41) Connector for the engine oil filter inlet pressure sensor
(42) Connector for the engine oil block inlet pressure sensor
(43) Connector for the engine coolant block inlet pressure sensor
(44) Connector for the engine oil block inlet temperature
(45) Engine coolant pump outlet temperature sensor
(46) Connector at the control box for the front harness Crossover Harness in the Control Box
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The crossover harness that is in the control box contains the wiring for the electrical components that are in the control box.
(47) Connector for the CAN data link wiring
(48) Connector for the atmospheric pressure sensor
(49) Jumper connector for the CAN shield to ground circuit
(50) Tee connector for the termination resistor that is for the local CAN data link
(51) Relay for the electric fuel priming pump
(52) Relay for the prelube
(53) Relay for the manual override that is for the right starting motor (−)
(54) Relay for the manual override that is for the left starting motor (+)
(55) Tee connector for the termination resistor that is for the global CAN data link Control Panel
The main panel on the EMCP includes the operator display and the push-button switches that are for the engine control switch.The annunciator panels provide visual indications and audible indications of diagnostic codes and event codes that become active.The emergency stop button, the indicator that is for the ether system, and the speed potentiometer are located on the lower panel.Refer to Systems Operation/Testing and Adjusting, RENR7902, "EMCP3" for information that is related to the EMCP 3.Data Link Features
The data links that are for C175 engines provide communication among the various controllers that are on the engine. These data links also provide communications with engine supervisory systems that are not located on the engine.Cat Data Link
This data link is exclusively used for communications between the engine ECM and Cat ET. The functionality of the service tool will be limited if the Cat Data Link is not connected during communication with Cat ET.Global CAN Data Link (Engine)
The global CAN data link allows communication with the following control systems and engine supervisory systems that are not located on the engine:
Engine ECM
Exhaust temperature module
EMCP 3
Service tool connector that is located on the generator set packageNote: Some service tool connectors may not provide a global CAN data link for Cat ET. Functionality of the service tool will be limited if Cat ET is not using dual data link communication. Cat ET must be connected to a service tool connector that provides a connection to the global CAN data link for the engine.