Group 30 Electrical system
Industrial Engines
TAD734GE, TAD650VE, TAD660VE, TAD750VE,
TAD760VE
Contents
Safety rules ............................................................
3
General information ..............................................
4
About this Workshop Manual ............................... 4
Spare parts .......................................................... 4
Certified engines .................................................. 4
Repair instructions ................................................
5
Our common responsibility ................................... 6
Tightening torques ............................................... 6
Special tools .........................................................
7
EMS 2 - “Engine Management System” ..............
8
General information .............................................. 8
CAN - Controller Area Network ............................. 8
CIU - Control Interface Unit .................................. 9
DCU - Display Control Unit ................................... 9
Fuel control ........................................................ 10
Calculation of fuel quantity ................................. 10
Altitude correction .............................................. 10
Diagnostic function ............................................ 10
Component location ...........................................
11
TAD 650, 660, 750, 760 VE ............................... 11
TAD 734 GE ...................................................... 12
Component description ......................................
13
Starter motor ...................................................... 13
Alternator ........................................................... 13
Injectors ............................................................. 14
Speed sensor, crankshaft .................................. 14
Speed sensor, camshaft .................................... 14
Sensor, boost pressure/
boost temperature .............................................. 15
Sensor, oil pressure, engine ............................... 15
EGR ................................................................... 15
Coolant temperature sensor ............................... 16
Sensor, common rail pressure (fuel) ................... 16
Sensor, fuel pressure ......................................... 16
Magnetically controlled proportional valve
(MPROP) ........................................................... 17
Water in fuel switch, secondary fuel filter .......... 17
Switch, coolant level .......................................... 17
Preheater ........................................................... 18
Engine control unit, EMS 2 ................................ 18
Repair instructions ..............................................
19
General advice on working with EMS engines .... 19
Electric welding .................................................. 20
Changing the engine control unit ........................ 21
Reprogramming a control unit ............................. 22
Programming an empty control unit .................... 23
Fault tracing of cables and connectors ............... 24
Checking the starter motor voltage ..................... 26
Checking the charging system ........................... 27
Rail pressure measurement ................................ 28
Malfunctions ........................................................
29
Fault code information ........................................ 29
FMI table / SAE standard .................................. 30
Manual fault tracing in bus cables ...................... 33
Diagnostic Trouble Codes ..................................
34
MID 128, PID 45
Inlet air heater status ......................................... 34
MID 128, PID 94
Fuel pressure ..................................................... 37
MID 128, PID 97
Water in fuel ....................................................... 43
MID 128, PID 100
Oil pressure ....................................................... 46
MID 128, PID 105
Boost temperature ............................................. 52
MID 128, PID 106
Boost pressure ................................................... 58
7747632 English 03–
2007
