Group 30 Electrical system Marine Diesel engines D9A2A MP • D9A2A MH D12D-B MP
Contents Safety information. ............................................... Introduction ......................................................... Important ............................................................
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General information. ............................................ 7 About this Workshop Manual .............................. 7 Spare parts ......................................................... 7 Certified engines ................................................. 7 Repair instructions ............................................... 8 Our common responsibility .................................. 8 Torque ................................................................ 8 Special tools ........................................................
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Design and function ............................................. 10 System Description EMS2 ..................................... 10 EVC system .......................................................... 11 Component location ............................................... 13 Location of monitors and sensors ....................... 14 Component description ........................................... 15 PCU .................................................................... 15 HCU .................................................................... 15 Identification of PCUs and HCUs ........................ 15 Controls .............................................................. 16 AUX stop button ................................................. 16 Solenoid valves, forwardsm – reverse .................. 17 Solenoid valve, low speed ................................... 17 Sensor, oil pressuree /oil temperature, reversing gear ..................................................... 17 Starter motor ....................................................... 18 Alternator ............................................................ 18 Unit injector ......................................................... 19 Piston cooling monitor (D12-800) ........................ 19
Sensor, fuel pressure .......................................... 19 Sensor, coolant temperature ............................... 20 Sensor, air pressuree/charge air temperature ..... 20 Sensor, oil pressurek/oil temperature, engine ..... 21 Sensor, camshaft position .................................. 21 Sensor, engine speed (flywheel) .......................... 21 Engine control unit .............................................. 22 Sensor, crankcase pressure ............................... 22 Monitor, lubrication oil level ................................. 23 Monitor, coolant level .......................................... 23 Water monitor, secondary fuel filter ..................... 23 Repair instructions. ............................................. 24 General advice on working with EVC engines ........ 24 Electric welding ...................................................... 24 Fault tracing of cables and connectors ................... 25 Joining electrical cables for connectors .................. 26 Fault tracing of the starter motor and windings ....... 27 When you change a control unit: ............................ 28 Programming the control unit ................................. 28 Programming an empty control unit ........................ 29 Malfunctions ......................................................... 30 Fault code information ......................................... 30 FMI table ............................................................ 30 General advice .................................................... 31 System introduction, EVC ................................... 32 Starting sequence ............................................... 32 Network............................................................... 33 Manual fault tracing in bus cables ....................... 33 Fault tracing the EVC system ............................ 34 Checking the instruments ................................... 35
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