Page 1
PUMPCONTROL
VALVE
OILFILTER
OILCOOLER
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULICTEMPERATURE
SENSORCOLD START
OILRESERVOIR OIL PRESSURE
SENSOR
HYDRAULICSUPPLY
PUMPGROUP
COOL DOWNCIRCUIT
FUEL TANK
FUELTEMPERATURE
SENSOR
PRESSUREREGULATING
VALVE
SECONDARYFUEL
FILTER
FUELTRANSFER
PUMP
PRIMARYFUEL FILTER
WATERSEPARATOR
LUBE OILPUMP
TO LUBESYSTEM
3408E/3412E HEUI FUEL SYSTEM
FLUID MANIFOLDHYDRAULIC PASSAGE
FLUID MANIFOLDHYDRAULIC PASSAGE
ECM
Page 14
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY
KEYSWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
INSTRUMENTPANEL
AUTO RETARDER CONTROL
EPTC II TRANSMISSION CONTROL
ELECTRONIC SERVICE TOOL
CAT DATA LINK
FAN
FAN SPEED SENSOR
FAN CONTROL VALVE
TURBO INLET PRESSURE SENSOR
THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,AND GROUND LEVEL SHUTDOWN (2) SWITCHES
THROTTLESENSOR ACCELERATOR
PEDAL
DISCONNECT SWITCH
3408E/3412E HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 15
ELECTRONIC CONTROL SYSTEM
Page 18
393229381812
732-PK996-GN998-BR999-WHF723-PKF724-PU
SECONDARY ENGINE SPEED+V TIMINGDIGITAL RETURNPRIMARY ENGINE SPEEDTIMING CAL +TIMING CAL -
ECM(3408E/3412 E)
P2 J2
ABC
ORBKWH
SECONDARYSPEED/TIMING
SENSOR
ABC
ORBKWH
PRIMARYSPEED/TIMING
SENSOR
TIMING CALIBRATIONCONNECTOR
12
SPEED/TIMING SENSORS
P44 J44
P20 J20
P26 P1 J1
Page 20
4
3
6
5
7
2
1
8
REF
REF
REF
REF
REF
REF
REF
REF
TDCTDC
TDC
TDCTDC
TDC
TDC
SINGLE50/50 TOOTH
TIMING WHEELROTATION
TDC CYLINDER No. 1
TIMINGCALIBRATIONRANGE ± 10°
PRIMARYSPEED/TIMING
SENSOR
SECONDARYSPEED/TIMING
SENSOR
TIMING WHEEL
Page 21
PUMPCONTROL
VALVE
OILFILTER
OILCOOLER
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULICTEMPERATURE
SENSORCOLD START
OILRESERVOIR OIL PRESSURE
SENSOR
ECM
HYDRAULICSUPPLY
PUMPGROUP
COOL DOWNCIRCUIT
FUEL TANK
FUELTEMPERATURE
SENSOR
PRESSUREREGULATING
VALVE
SECONDARYFUEL
FILTER
FUELTRANSFER
PUMP
PRIMARYFUEL FILTER
WATERSEPARATOR
LUBE OILPUMP
TO LUBESYSTEM
3408E/3412E HEUI FUEL SYSTEM
FLUID MANIFOLDHYDRAULIC PASSAGE
FLUID MANIFOLDHYDRAULIC PASSAGE
Page 23
TO LUBESYSTEM
FUELTRANSFER
PUMP
PUMPCONTROL
VALVE
OILFILTER
3408E/3412E HEUI FUEL SYSTEM
OILCOOLER
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULICTEMPERATURE
SENSOR
OIL PRESSURESENSOR
ECM
COOL DOWNCIRCUIT
LOW PRESSURE OIL (HYDRAULIC) SUPPLY
FUEL TANK
FUELTEMPERATURE
SENSOR
PRESSUREREGULATING
VALVE
SECONDARYFUEL
FILTERPRIMARY
FUEL FILTERWATER
SEPARATOR
LUBE OILPUMP
COLD STARTOIL
RESERVOIR
HYDRAULICSUPPLY
PUMPGROUP
FLUID MANIFOLDHYDRAULIC PASSAGE
FLUID MANIFOLDHYDRAULIC PASSAGE
Page 24
TO LUBESYSTEM
FUELTRANSFER
PUMP
PUMPCONTROL
VALVE
OILFILTER
3408E/3412E HEUI FUEL SYSTEM
OILCOOLER
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULICTEMPERATURE
SENSOR
OIL PRESSURESENSOR
HYDRAULICSUPPLY
PUMPGROUP
COOL DOWNCIRCUIT
HIGH PRESSURE HYDRAULICS
FUELTEMPERATURE
SENSOR
ECM
FUEL TANK
PRESSUREREGULATING
VALVE
SECONDARYFUEL
FILTERPRIMARY
FUEL FILTERWATER
SEPARATOR
LUBE OILPUMP
COLD STARTOIL
RESERVOIRFLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLDHYDRAULIC PASSAGE
Page 25
TO LUBESYSTEM
FUELTRANSFER
PUMP PRESSUREREGULATING
VALVE
PUMPCONTROL
VALVE
OILFILTER
3408E/3412E HEUI FUEL SYSTEM
OILCOOLER
LUBE OILPUMP
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULICTEMPERATURE
SENSOR
OIL PRESSURESENSOR
ECM
COOL DOWNCIRCUIT
LOW PRESSURE FUEL SUPPLY
FUELTEMPERATURE
SENSOR
FUEL TANK
SECONDARYFUEL FILTER(2 MICRON)
PRIMARYFUEL FILTER
WATERSEPARATOR
COLD STARTOIL
RESERVOIR
HYDRAULICSUPPLY
PUMPGROUP
FLUID MANIFOLDHYDRAULIC PASSAGE
FLUID MANIFOLDHYDRAULIC PASSAGE
Page 26
LOW PRESSUREFUEL SUPPLY
CYLINDER HEADINJECTOR SLEEVE
FLUID SUPPLYMANIFOLD
INJECTOR
INJECTOR OILADAPTER
JUMPER TUBE
INJECTOR CLAMP
HIGH PRESSUREHYDRAULIC PASSAGE
CYLINDER HEAD
ROCKER ARM BASE
LUBE OIL PASSAGE
CYLINDER BLOCKCOOLANT
METAL WASHER
INJECTOR FLUID FLOW HIGH PRESSURE HYDRAULIC OIL
Page 27
FLUID SUPPLYMANIFOLD
INJECTOR
CYLINDERHEAD
LOWER INJECTORO-RING SEAL
UPPER INJECTORO-RING SEAL
INJECTOR FUEL SUPPLY
METAL-TO- METALCONTACT
LOW PRESSUREFUEL SUPPLY
CYLINDER HEADINJECTOR SLEEVE
UPPER SLEEVEO-RING SEAL
LOWER SLEEVEO-RING SEAL
Page 29
LOW PRESSUREFUEL SUPPLY PASSAGE
CYLINDER HEADINJECTOR SLEEVE
HIGH PRESSUREHYDRAULIC PASSAGE
ROCKER ARMBASE
LUBRICATION OILPASSAGE
EXTRACTORSPLINES
FUEL SEALS
FLUID SUPPLY MANIFOLD
Page 31
INJECTION CURRENT WAVEFORM
0 1 2 3 4
CU
RR
EN
T F
LO
W
TIME (MILLISECONDS)
PULL-IN PEAK CURRENT
HOLD-IN PEAK CURRENT
ONE CYCLE
5
Page 32
WAVEFORM AND RESPONSE CHARACTERISTICS
0 1 2 3 4
CU
RR
EN
T F
LO
W
TIME (MILLISECONDS)
CURRENT
POPPETLIFT
INJECTIONRATE
START OFINJECTION
DURATION
5END OF
INJECTION
Page 34
HEUI UNIT INJECTOR
3 MAIN GROUPS
VALVE BODYGROUP
BARREL GROUP
NOZZLE GROUP
Page 35
HORIZONTALBOLTS
JUMPER TUBE
INJECTOR CLAMP
VERTICALBOLTS
INJECTOR INSTALLATIONALLEN
SCREWS
INJECTOR OILADAPTOR
Page 38
PRIMING PORT
ORIFICE
RESERVOIR
SWASHPLATE
TRANSFER PUMP
COMPENSATORVALVE
HEUI PUMP
VALVE BASE
DRAIN PASSAGE
Page 41
TO LUBESYSTEM
FUELTRANSFER
PUMP
PUMPCONTROL
VALVE
OILFILTER
OILCOOLER
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULICTEMPERATURE
SENSOR
OIL PRESSURESENSOR
ECM
COOL DOWNCIRCUIT
COOL DOWN BYPASS CIRCUIT
FUEL TANK
FUELTEMPERATURE
SENSOR
PRESSUREREGULATING
VALVE
SECONDARYFUEL
FILTER
LUBE OILPUMP
PRIMARYFUEL FILTER
WATERSEPARATOR
FLUID MANIFOLDHYDRAULIC PASSAGE
HYDRAULICSUPPLY
PUMPGROUP
COLD STARTOIL
RESERVOIRFLUID MANIFOLD
HYDRAULIC PASSAGE
DRAIN
.020 IN.ORIFICE
Page 43
CHECKFITTING SPRINGVALVE BLOCK SEAT
REVERSE FLOW CHECK VALVE
FROMPUMPTO
INJECTORS
SEAT(END VIEW)
Page 45
ADAPTER CAGE
RINGSHELLPIN
STATOR
SEAL SEATPOPPETVALVE
SOLENOIDARMATURE
STOP
TOCASE DRAIN
FROM LOADSENSING SPOOL
VALVE
VALVEBLOCK
NO CURRENT FLOW
COILASSEMBLY
PUMP CONTROL VALVE
EDGE FILTER
SPRINGRETAINER
Page 46
ADAPTER CAGE
RINGSHELLPIN
STATOR
SEAL SEATPOPPETVALVE
SOLENOIDARMATURE
STOP
COILASSEMBLY
EDGEFILTER
SPRINGRETAINER
FROM LOADSENSING SPOOL
VALVE
VALVEBLOCK
HIGH CURRENT FLOWPUMP CONTROL VALVE
TOCASE DRAIN
Page 47
HEUI SYSTEM POWER SUPPLIES
• ECM: 24 VOLTS
• INJECTORS: 105 VOLTS
• ANALOG SENSORS: 5 VOLTS
• SPEED/TIMING SENSORS: 12.5 VOLTS
• DIGITAL SENSORS: 8 VOLTS
• PUMP CONTROL VALVE: 0 to 24 VOLTS
Page 48
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY
KEYSWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
PUMPCONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
INSTRUMENTPANEL
AUTO RETARDER CONTROL
EPTC II TRANSMISSION CONTROL
ELECTRONIC SERVICE TOOL
CAT DATA LINK
FAN
FAN SPEED SENSOR
FAN CONTROL VALVE
TURBO INLET PRESSURE SENSOR
THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,AND GROUND LEVEL SHUTDOWN (2) SWITCHES
THROTTLESENSOR ACCELERATOR
PEDAL
DISCONNECT SWITCH
3408E/3412E HEUI SYSTEMECM POWER SUPPLY COMPONENTS
MACHINEHARNESS
Page 49
0511040623
ECM(3408E/3412E)
(-) BATTERY(-) BATTERY(+) BATTERY(+) BATTERYKEY SWITCH ON
229-BK-14229-BK-14150-RD-14150-RD-14113-OR
12
26
24 VOLTS DC
(+)
(-)
ENGINE BLOCKGROUND BOLT
CIRCUIT BREAKER
BATTERY
R
CSB ST
OFFON
308-YL
200-BK
105-RD
KEY SWITCH
112-PU
117-RD
113-OR
15 A
10 AMPP3 J3
P1 J1
ECM POWER SUPPLY CIRCUIT
DISCONNECTSWITCH
Page 50
393229381812
732-PK996-GN998-BR999-WHF723-PKF724-PU
SECONDARY ENGINE SPEED+V TIMINGDIGITAL RETURNPRIMARY ENGINE SPEEDTIMING CAL +TIMING CAL -
ECM(3408E/3412E)
P2 J2
ABC
ORBKWH
SECONDARYSPEED/TIMINGSENSOR (LH)
ABC
ORBKWH
PRIMARYSPEED/TIMINGSENSOR (RH)
SPEED/TIMING SENSOR POWER SUPPLY12.5 ± 1 VOLTS
P44 J44
P20 J20
P1 J1
Page 51
160532
A701-GYF726-YLA703-BRF726-YL
P2 J2
INJECTOR WIRING SCHEMATIC
SOLENOID 1 POWERSOLENOID 1/3 RETURNSOLENOID 3 POWER
ECM(3408/3412E)
401134
A702-PUF727-BUA704-GNF727-BU
SOLENOID 2 POWERSOLENOID 2/4 RETURNSOLENOID 4 POWER
321738
A705-BUF728-BRA707-PUF728-BR
SOLENOID 5 POWERSOLENOID 5/7 RETURNSOLENOID 7 POWER
282122
A706-GYF729-GNA708-BRF729-GN
SOLENOID 6 POWERSOLENOID 6/8 RETURNSOLENOID 8 POWER
372731
A709-ORF730-GYA711-PUF730-GY
SOLENOID 9 POWERSOLENOID 9/11 RETURNSOLENOID 11 POWER
183312
A710-GYF731-ORA712-BRF731-OR
SOLENOID 10 POWERSOLENOID 10/12 RETURNSOLENOID 12 POWER
1234
SOLENOID 1
SOLENOID 3
J52/P52
1234
SOLENOID 2
SOLENOID 4
J56/P56
1234
SOLENOID 5
SOLENOID 7
J53/P53
1234
SOLENOID 6
SOLENOID 8
J57/P57
1234
SOLENOID 9
SOLENOID 11
J54/P54
1234
SOLENOID 10
SOLENOID 12
J58/P58
Page 52
P22 J22
ENGINE COOLANTTEMPERATURE SENSOR
ENGINE OILPRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
+V ANALOGANALOG RETURNSIGNAL
P23 J23
TURBO OUTLETPRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
P25 J25
TURBO INLET PRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
P27 J27
ATMOSPHERICPRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
P45 J45
HYDRAULICPRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
3630
ANALOG SENSORPOWER SUPPLY
P1 J1
P43 J43
+V ANALOGANALOG RETURNSIGNAL
FUEL TEMPERATURE SENSOR
P51 J51
+V ANALOGANALOG RETURNSIGNAL
HYDRAULIC OILTEMPERATURE SENSOR
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
J21 P21
5 ± 0.2 VOLTS
ECM (3408E/3412E HEUI)+V ANALOG SUPPLYANALOG RETURN
Page 53
ECM (3408E/3412E HEUI)+ V DIGITAL SUPPLY- V DIGITAL RETURN
2935
DIGITAL SENSORPOWER SUPPLY
P1 J1
ABC
J35 P35
ABC
P84 J84+V DIGITAL
DIGITAL RETURNSIGNAL
FAN SPEED SENSOR
THROTTLEPOSITION SENSOR
+V DIGITALDIGITAL RETURN
SIGNAL
8 ± 0.5 VOLTS
Page 54
ECM (3408E/3412E HEUI)+ SUPPLY- RETURN
2935
P2 J2
AB
J46 P46
PUMP CONTROLVALVE
SUPPLY RETURN
PUMP CONTROL VALVEPOWER SUPPLY
0 to 24 VOLTS PWM0 to 800 mAmps
Page 55
ELECTRONIC SENSORS AND SYSTEMS
Page 56
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 57
ANALOG SENSORS
• Fuel temperature
• Hydraulic temperature
• Lubrication oi l pressure
• Turbocharger outlet pressure
• Turbocharger inlet pressure
• Atmospheric pressure
• Coolant temperature
• Hydraulic pressure
Page 58
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 59
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 60
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 61
100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
74%
77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53
8,210
8,920
9,630
10,340
11,050
11,760
12,470
13,890
14,600
15,310
16,020
16,730
17,440
13,180
7,500
72%
ENGINE POWER DERATING MAPACCORDING TO ATMOSPHERIC PRESSURE
ATMOSPHERIC PRESSURE IN kPa
PE
RC
EN
T O
F F
UL
L L
OA
D P
OW
ER
AL
TIT
UD
E IN
FE
ET
Page 62
CAT
AUTOMATIC AIR FILTER COMPENSATION
TURBOCHARGERINLET PRESSURE
SENSOR
ATMOSPHERICPRESSURE
SENSOR
Filter differential pressure calculated with formula:Atmospheric sensor pressure - Turbo sensor pressure = ∆PFuel limited 2% per 4 inches H20 to max 20%
Page 63
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 64
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 65
OIL
PR
ES
SU
RE
IN k
Pa
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 180060
80
100
120
140
160
180
200
220
240
260
280
300
ENGINE RPM
OIL PRESSURE MAP
1900
320
340
8.7
11.6
14.5
17.4
20.3
23.2
26.1
29
31.9
34.8
37.7
40.6
43.5
46.4
49.3
OIL
PR
ES
SU
RE
IN P
SI
kPa x 0.145 = PSI
2000
Page 66
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET (BOOST) PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 67
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
BACKUP CAMSPEED/TIMING SENSOR
PRIMARY CAMSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP SENSOR
FUEL TEMPERATURE SENSOR
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 68
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 69
• Throttle Position
• Pump Control Valve Signal
• Exhaust Temperature
DIGITAL SENSORS AND CIRCUITS
Page 70
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
THROTTLESENSOR
ACCELERATORPEDAL
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 71
90%
ON
OFF
ON
OFF
ON
OFF
10%
50%
DUTYCYCLE
DUTY CYCLE = PERCENT OF TIME ON VS PERCENT OF TIME OFF
1 CYCLE
= 90%
DUTYCYCLE
= 50%
DUTYCYCLE
= 10%
PULSE WIDTH MODULATED SIGNALS
Page 72
ADEM IIELECTRONIC
CONTROLMODULE
(ECM) GROUNDBOLT
15 AMPBREAKER
MAINPOWER RELAY KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARYSPEED/TIMING SENSOR
PRIMARYSPEED/TIMING SENSOR
HYDRAULICPRESSURE SENSOR
24 V
MACHINEINTERFACE
CONNECTOR
ENGINEHARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12INJECTORS
TDC SERVICEPROBE ACCESS
TURBO INLET PRESSURE SENSOR
THROTTLESENSOR
ACCELERATORPEDAL
DISCONNECT SWITCH
HEUI SYSTEMCOMPONENT DIAGRAM
MACHINEHARNESS
Page 73
VIMS DISPLAY MODULES
COMMUNICATION
ADAPTER
7X1701
CONTROL SERVICE TOOL
SERVICETOOL
CONNECTOR CAT DATA LINK
VIM
SM
AIN
MO
DU
LE
ADEM IIELECTRONIC
CONTROLMODULE
(ECM)
LAPTOPCOMPUTER
CATELECTRONIC TECHNICIAN
Page 74
D10R/988F/990 CAT DATA LINK CIRCUIT
89
POWERTRAIN CONTROLMODULE
Cat Data Link +Cat Data Link -
2324
CMS
Cat Data Link +Cat Data Link -
DEHJ
76
3132
9371
893-GN892-BRE794-YLE-793-BU
J42 P3 J3 P1 J1 ECM
Cat Data Link +Cat Data Link -ATA Data Link +ATA Data Link -
SERVICE TOOLCONNECTOR
MACHINE INTERFACECONNECTOR
Page 75
PUMPCONTROL
VALVEOIL
COOLER
HEUI
HEUI
OILSUMP
HYDRAULICPRESSURE
SENSOR
HYDRAULIC OILTEMPERATURE
SENSORCOLD START
OILRESERVOIR OIL PRESSURE
SENSOR
ECM
HYDRAULICSUPPLY
PUMPGROUP
COOL DOWNCIRCUIT
FUEL TANK
FUELTEMPERATURE
SENSOR
PRESSUREREGULATING
VALVE
SECONDARYFUEL
FILTER
FUELTRANSFER
PUMP
PRIMARYFUEL FILTER
WATERSEPARATOR
LUBE OILPUMP
TO LUBESYSTEM
FLUID MANIFOLD
FLUID MANIFOLD
3408E/3412E HEUI FUEL SYSTEM
OILFILTER