Product

2.7 Electronic Control Unit (ECU)

2.7.1 ECU for 6M33CR

The WISE15 ECU has two wire harness slots, in which the gray stands for the engine side and
the black stands for the gen-set control panel, each with 76 pins.
The engine wire harness includes engine sensors, fuel injectors and electrically controlled fan
pins, which have been installed before delivery.
The gen-set wire harness includes the functional pins of the gen-set, and OEM fabricat es the
wire harness according to the functional needs of the gen-set.
Terminal diagram
WISE15-P160 Powerkit Terminal Diagram

BAT - BAT + Battery

X1-02 X1-01
Battery - BAT - BAT + 25A +
X1-04 X1-03
BAT - BAT +
X1-06 X1-05 T15
CAN0H Key switch
Controller Area Network 0 X1-42 I_S_T15 Key switch 5A
X1-59
Communication & diagnose CAN0L
X1-43 I_S_T50 Start switch
120 in ECU X1-58
X1-44
Controller Area Network 1 CAN1H X1-68 I_S_SPAPOS
X1-45 Speed Adjustment + Low power relay of ECU Do
Flash & calibration CAN1L X1-46
X1-51 I_S_SPANEG Speed Adjustment - not share with other loads
120 in ECU
5V_SAK I_S_GrCoS
X1-24 X1-64 Parallel Connect Switch
I_A_SAK
Speed Adjustment Knob X1-09 I_S_FrqSwt
G_R_SAK X1-55 Dual Frequency Switch
X1-25

X1-60 Diagnosis Request Switch

5V_SGRK
X1-28
I_A_SGRK Starter Relay
Speed Governing Rate Knob X1-10
G_R_SGRK X1-22
X1-27

X1-37

X1-40 Preheat Lamp

Engine Speed Output Signal (PWM) X1-19 Water in Fuel Lamp No need to
X1-23 connect lamps if
controlled by CAN
X1-35 Diagnostic Lamp
Water in Fuel Sensor I_A_WFS
S 2 X1-12
+
1 G_R_WFS
Q 3 X1-32
X1-48 Idle to Rated Switch

5V_FSS
n X2-51
I_F_FSS O_V_24V The Max Current is 3A
Fan speed sensor X2-43 X2-24 1 1
G_R_FSS X2-30 O_V_24V
X2-74 2 2 The Max Current is 4A
5V_BPTS
P X2-64
& I_A_BPS X2-68 The sum of x2-56 and x2-74 shall less than 6A
Intake press-temp sensor I_A_BTS X2-26
t G_R_BPTS X2-34
U
O_V_24V
t I_A_CTS X2-56
X2-27 Fan control Output
Coolant temperature sensor G_R_CTS X2-33 X2-40 O_T_FAN (Electromagnetic/Silicone fan)
U
P 5V_RAILPS
X2-52 O_S_FAN2 Fan Relay 2 (Electromagnetic fan)
Rail pressure sensor I_A_RAILPS X2-66 X2-76
G_R_RAILPS X2-55
U
5V_OPTS X2-03 O_V_24V
P X2-63 X2-06 O_T_MEUN Metering Unit
& I_A_OPS X2-67
Oil press-temp sensor I_A_OTS X2-25
t G_R_OPTS 6-cylider 4-cylinder
U X2-47 H
X2-12
n I_F_CRSPOS X2-13 L Injector 1 Injector 1
Crankshaft speed sensor X2-59 H
I_F_CRSENG X2-14
(Magneto electric) U X2-60 X2-15 L Injector 2
G_C_CRS X2-73 H
X2-16 Injector 3 Injector 4
X2-17 L

X2-18 H
L Injector 4
X2-19
n 5V_CAS X2-53 X2-20 H
L Injector 5 Injector 3
Camshaft speed sensor I_F_CAS X2-41 X2-21
X2-22 H
(Hall) G_R_CAS X2-35 L Injector 6 Injector 2
U X2-23

Figure2.7.1A-Terminal diagram for 6M33CR ECU

To prevent any damage to ECU, it is forbidden to carry out hot plugging operation on ECU.
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Electrical connection to the ECU

ECU power line
Pin No.: X1-01, X1-03, X1-05 (positive), X1-02, X1-04, X1-06 (negative)
Functional description: ECU main power (24V DC)
Operating voltage range: 9-32V
A 25 Ampere fuse is to be included in the positive line to the ECU

Wire diameter: 10mm2

Wire length
(recommended): <6m
Wire diameter: 2.5mm2
Wire length
Battery switch
Fuse (25A) (recommended): <2m
+ -
Negative Positive Generator
terminal terminal
ECU
Battery
+ -
Starter

Wire diameter: 2.5mm2 Engine

Wire length
(recommended): <1m

Body

Figure 2.7.1B-ECUand battery connection diagram

Ignition switch (T15)

Pin No.: X1-59
Functional description:
The switch is ECU power switch. A fter the s witch is on, ECU will be in t he
working condition, and after the switch is off, the engine will be stopped.
Any interference on the T15 switch from other electrical devices should be
avoided, otherwise the switch may be off, but the engine cannot be stopped.
When the T15 switch is opened in order to shut off the engine, the main battery shall
continue supplying power to the ECU for 120 seconds via the main battery switch in order
to ensure all engine data is written to memory.

T15 switch 1 T15 switch 1 load

30 switch 1

Fuse

Fuse T15 X1-59

ECU T15 dedicated relay

T15 switch 2
30 switch 2
Normal voltage
terminal load Other loads
Normal
voltage

Figure 2.7.1C-Key Sw itch T15

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Starter switch (T50)

Pin No.:X1-58
Functional description: The engine starter is controlled by ECU, the switch will be
onto control the start relay output. Benefits of the ECU-controlled start are as fol-
lowing:
With the help of the second
start protec tion, the starter will
not respond after the start
switch is pressed again when
the engine has been started
For example, the engine is
started, but the key is seized
in the state in which T50 is on.
At this time, the starter relay
will not respond.
Cont rols start time and pre- Figure 2.7.1D-Starter

vent battery damage. In case

of difficult start, start circuit will
be powered off when the en-
gine is not started after a cer-
tain time (12s by default).
Prevent blind meshing. When
the starter fails to drive the
crankshaft to a certain speed
within a certain period of time,
ECU will think that the starter
and the flywheel are not en-
gaged, and the relay will be
disconnected. At present, the
calibrated value is 12 s and 52
r/min.
Cont rol preheating. If the en-
gine is started before the in-
take air heating is not com-
pleted, the intake air heating
will be terminated, otherwise
the battery cannot withstand.

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Speed adjustment knob

Pin No.: X1-24, X1-09, X1-25
Functional description: It is used to adjust the engine speed, and cannot be used
together with the speed fine-tuning switch.

Speed governing rate knob

Pin No.: X1-28, X1-10, X1-27
Functional description: It is used to set the engine steady speed.

Speed adjustment (+)

Pin No.: X1-68
Functional description: It is used to increase the engine speed slightly or contin u-
ously. Press it to increase the speed by a fixed amount (optional), press and hold it to
increase the speed by N fixed amounts continuously.

Speed adjustment (-)

Pin No.: X1-51
Functional description: It is used to decrease t he engine speed slightly or contin u-
ously. Press it to decrease the speed by a fixed amount (optional), press and hold it
to decrease the speed by N fixed amounts continuously.

Parallel connection switch

Pin No.: X1-64
Functional description: It is the conversion switch bet ween stand -alone power gen-
eration state and two or more grid-connected power generation state.

Dual frequency switch

Pin No.: X1-55
Functional description: It is a changeover s witch bet ween 50 Hz power generation
mode and 60 Hz power generation mode.

Idle to rated switch

Pin No.: X1-48
Functional description: The engine switches from the idle running state to the power
generation state at the rated speed.

Fault Diagnosis
Diagnostic request switch Pin No.: X1-60
Diagnostic lamp Pin No.: X1-35 Figure 2.7.1E-Fault Diagnosis
Functional description: Once the diagnostic request switch is pressed, ECU will flash
and the read number of lights will be the flash code. The switch is required to be
self-resetting.
Note:
When the diagnosis switch is off, the diagnostic lamp will stay on. If the switch fails to

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reset automatically, the diagnostic lamp may stay on due to the diagnostic switch off.
Each flash code consists of 3 bits, for example: 3-2-1, the flashing diagram is as follows:

Figure 2.7.1F-Flash Diagram

Engine speed output

Pin No.: X1-19
Functional description: This pin outputs the Pulse Width Modulation (PWM) square
wave signal to provide the engine speed information for the ordinary instruments,
and t he speed is 4 pulses per revolution by default. If the instr ument used is a Con-
troller Area Network (CAN) instrument, it is not necessary to connect this pin.
Note: When matching the instrument, it is necessary to inform the engine manufacturer of
the receiving pulse number of the instrument. 1 pulse/revolution, 2 pulses/revolution and
4 pulses/revolution are recommended.

Intake air heating function

Grid heater relay Pin No.: X1-37,
X2-24
Preheat lamp Pin No.: X1-40,
X2-74 Figure 2.7.1G-Intake Air Heating
Functional description: ECU senses the ambi ent temperature based on the temper-
ature sensor on the engine and automatically controls the operation of the intake
grille via the intake air heating relay to facilitate cold start. When the intake air heat-
ing is working, the light will stay on. After the air intake heat ing is completed, the light
will flash 3 times and then go out.

Water in fuel alarm function

Water in fuel sensor Pin No.: X1-12,
X1-32, X2-24 Figure 2.7.1H-Water in Fuel Alarm

Water in fuel lamp Pin No.: X1-23,

X2-74
Functional description: It is used to detect the water accumulated in the water cup of
the fuel coarse filter. When the water level exceeds the MAX scale, the water level
sensor (switch signal) will input the signal to ECU, and ECU will light up the water in
fuel lamp to prompt the operat or to drain the water as soon as possible and to
maintain the coarse filter.

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CAN communication
Pin No.: X1-42, X1-43
Functional description: It is used for information exchange bet ween engine ECU and
other CAN nodes on the gen-set control card.
Note:
The twisted- n-
side ECU;
If the CAN wire is shielded, the shielded wire must be grounded at one end only and t he
other end is left unconnected. Two-end grounding is forbidden. In order to prevent the i n-
fluence on ECU as a result that the current int erferenc e from the ground voltage differ-
ence is coupled to CAN wire.

CAN flashing
Pin No.: X1-45, X1-46
Functional description: It is used for data transmission bet ween external e quipment
and ECU and is mainly used for data flashing and reading of engine fault codes.

2P connector
Pin No.: X2-24, X2-74
Functional description: It is used as 24V power supply for relays/lamps of PowerKit
plug, the sum voltage of X2-56 and X2-74 shall less than 6A.

Diagnostic interface
Diagnostic interface connector has a standard OBD II 16-pin interface: square
Part number: AMP 179631-1/2 Terminal: 776001-1.

Figure 2.7.1I-Diagnostic interface

Diagnostic interface number ECU terminal number Description

1 X1-45 CAN H_1
4 GND Ground
6 X1-42 CAN H_0
7 None K line
9 X1-46 CAN L_1
14 X1-43 CAN L_0
16 BAT+ +24V

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2.7.2 ECU for 16M33CR

WISEC10B supports 6 cylinder or 8 cylinder diesel engine, for more than 8 cylinder diesel
engine (16M33 has 16 cylinders), 2 pieces of WISE C10B controller with master -slave are
needed.
The WISE C10B electric control unit (ECU) has eight wire socket slots, which are inscribed on
the side of the ECU socket. Before the engine leaves the factory, 8 wiring harness slots have
been inserted, and 31P integrated interfac e and 47P connector are reserved, and the pin
definition is shown below. In order to facilitate the customer connection, all slots have been
connected to the customer. The customer only needs to define t he connec ted switches and
relays according to the 31P integration interface and the 47P connector.

Terminal diagram

1
2 30A

3
4
5

9 Term. 30 (BAT+)
10
11
12 Ignition switch
13 10A
14
15

16
17 30A
18
19 Term. 31 (BAT-)
20

21

22
23
24
25
26
27
28

29

30

Notice:
For each supply power pins, the respective distance from 31P integrated connector to V1 or V2 is the same, and the respective total
length should not exceed 0.5m.

Figure2.7.2A-Terminal diagram for 16M33CR ECU 1/2

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G_G_DBS1
11

Speed governing rate knob

1
2
3
4
5
6
Dual frequency switch 7
8
31 9
10
32 11
12
Idle to rated speed switch 13
14
15
16

1
2
3
4
5
6
41 7
8
9
10
11
120
12
13
14
15
16

Figure2.7.2B-Terminal diagram for 16M33CR ECU 2/2

To prevent any damage to ECU, it is forbidden to carry out hot plugging operation on ECU.

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Plugs

Figure2.7.2C-Plugs for 16M33CR ECU

The naming rules of the pin of the controller: the pin of plug1 is 1.01 to 1.36, the pin of plug 2 is
2.01 to 2.48, the pin of plug 3 is 3.01-3.48, and the pin of plug 4 is 4.01-4.36.

Plug1 Plug2 Plug3 Plug4

Plug5 Plug 6 Plug 7 Plug 8

Figure2.7.2D-Sequence of Plugs for 16M33CR ECU

When Connecting connectors, please follow the sequence of 4 3 2 1,then 8 7 6

5.Before connecting, make sure that the plug(harness connectors) is properly oriented, posi-
tioned and in connector's cavity(When design the wire harness, make sure the connectors can
be plugged in the cavity following the sequence of (4 3 2 1, 8 7 6 5) to avoid any
bend pin.

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Electrical connection to the ECU

ECU power line
Pin No.:

Master ECU Slave ECU

Power
ECU pin 31P connector ECU pin 31P connector

4.01/4.04/4.05/ 4.01/4.04/4.05/ 16#/17#/18#/19

Battery + 1#/2#/3#/4#/5#
4.07/4.08 4.07/4.08 #/20#

4.06/4.10/4.13/ 4.06/4.10/4.13/
9#/10#/11#/12 22#/23#/24#/25
Battery - 4.11/4.16/4.09/ 4.11/4.16/4.09/
#/13#/14#/15# #/26#/27#/28#
4.12 4.12
Functional description: ECU main power (24V DC)
Operating voltage range: 9-32V
A 30A fuse is required for the main power supply (both for power and T15, see
the attachment of pin definition)
Positive pole of the ECU power shall be connected to positive pole of the battery
via battery switch, and the power line of E CU shall be connected separately, DO
NOT share with other actuators. The purpose of battery switch installed in pos i-
tive pole is to ensure the power supply will be completely cut off when the switch
is disconnected, but if the s witch is connected to the negative pole, when t he
negative switch is disconnected, ECU and other electric devices will have a
constant current and cause battery loss if any of the lines on the PowerKit is
grounded.
Negative pole of ECU shall be c onnected with negative pole of t he battery only,
in order to prevent voltage difference from being caused between ECU ground
and battery ground by the conductor impedance when large current flows
through t he PowerKit, and prevent ECU ground drifting, or even bias on c ollec-
tion of sensor signals.
The distance between ECU power supply pin and V1/V2 should be same, and
the length shall no longer than 0.5m. Wiring sections please refer to terminal
diagram.

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Battery switch

30A 30A

+
4.01

-
4.01
4.04
4.04
4.07
4.07

BAT- BAT+ 4.05 4.05

4.08 alternator
4.08
2.28Master Slave

Battery 4.06 ECU 4.06 ECU

4.10 4.10
4.13 4.13

+
4.11

-
4.11
4.16 4.16
4.09
4.09
4.12 4.12
2.28
Starter

Chassis
Figure 2.7.2E-ECUand battery connection diagram

Ignition switch (T15)

Pin No.: 4.36(Master & Slave ECU), 7# (31P connector)
Before leave the Engine manufactory, Pin 4.36 of both ECU have been connected to
7# of 31P connector.
Functional description:
The switch is ECU power switch. After the switch is on, ECU will be in the working
condition, and after the switch is off, the engine will be stopped.
Remark:
When the T15 switch is off to stop the engine, the main switch of the battery shall be
maintained for at least 2 min, so that the relevant data of the driving cycle (fuel consum p-
tion and other information) is written into the memory of ECU;
The T15 terminal of ECU should be separated from other loads so as to avoid any dam-
age to the capacitance when the load is off. It is recommended to connect T15 to the
terminal with control side of freewheeling diode, and series connection with a 10A re-
sistance, to avoid any impact to the signal circuit of T15. Details please refer to terminal
diagram.

Other loads of Powekit

controlled by T15 switch
4.36

7 7
Fuse 10A

Fuse
T15 switch 31P Integrated
ECU T15 Special relay connector
4.36

Loads need constant electric

Figure 2.7.2F-Pow er supply sw itch of double ECU

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Starter switch (T50)

Pin No.:4.31 (Master ECU), 8# (31PConnector)
Before leave the Engine manufactory, Pin 4.31 of both ECU have been connected to
8# of 31P connector.
Benefits from ECU-controlled start are as following:
With the help of the second
start protec tion, the starter will
not respond after the start
switch is pressed again when
the engine has been started
For example, the engine is
started, but the key is seized
in the state in whichT50 is on.
At this time, the starter relay
will not respond. Figure 2.7.2G-Starter
Cont rols start time. In the
case of diffi cult start, the relay
will be powered off when the
engine is not started after a
certain time (12 s by default).
Prevent blind meshing. When the start er fails to drive the crankshaft to a certain
speed within a certain period of time, ECU will think that the starter and the
flywheel are not engaged, and the re lay will be disconnected. At present, the
calibrated value is 12 s and 52r/min.
Cont rol preheating. If the engine is started before the intake air heating is not
completed, the intake air heating will be terminated, otherwise the battery can-
not withstand.
Speed adjustment knob
Pin No.: 3.11/3.13/3.21 (Master ECU), 19#/20#/21# (47P connector)
Functional description: It is used to adjust the engine speed, and cannot be used
together with the speed fine-tuning switch.

Speed governing rate knob

Pin No.: 3.04/3.14/3.22 (Master ECU), 22#/23#/24# (47P connector)
Functional description: It is used to set the engine steady speed.

Speed adjustment (+)

Pin No.: X1-68
Pin No.: 3.34/3.46 (Master ECU), 25#/31# (47P connector)
Functional description: It is used to increase the engine speed slightly or contin u-
ously. Press it to increase the speed by a fixed amount (optional), press and hold it to
increase the speed by N fixed amounts continuously.

Speed adjustment (-)

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Pin No.: 3.33/3.46 (Master ECU), 26#/31# (47P connector)

Functional description: It is used to decrease t he engine speed slightly or contin u-
ously. Press it to decrease the speed by a fixed amount (optional), press and hold it
to decrease the speed by N fixed amounts continuously.

Parallel connection switch

Pin No.: 3.28/3.46 (Master ECU), 27#/31# (47P connector)
Functional description: It is the conversion switch bet ween stand -alone power gen-
eration state and two or more grid-connected power generation state.

Dual frequency switch

Pin No.: 3.38/3.46 (Master ECU), 30#/31# (47P connector)
Functional description: It is a changeover s witch bet ween 50 Hz power generation
mode and 60 Hz power generation mode.

Idle to rated switch

Pin No.: 3.27/3.32 (Master ECU), 32#/33# (47P connector)
Functional description: The engine switches from the idle running state to the power
generation state at the rated speed.

Fault Diagnosis
Diagnostic request switch Pin No.:
28#/31# (47Pconnector) Figure 2.7.2H-Fault Diagnosis
Diagnostic lamp Pin No.: 11#/12# (47Pconnector)
Functional description: Once the diagnostic request switch is pressed, ECU will flash
and the read number of lights will be the flash code. The switch is required to be
self-resetting.
Note:
When the diagnosis switch is off, the diagnostic lamp will stay on. If the switch fails to
reset automatically, the diagnostic lamp may stay on due to the diagnostic switch off.
Each flash code consists of 3 bits, for example: 1-1-2-1, the flashing diagram is as fol-
lows:

Figure 2.7.1I-Flash Diagram

CAN message:
Fault diagnostic lamp can be cont rolled by DM1 message, it will be controlled by

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DM1Single message when there s one fault, and by DM1Multi when there re multiple
faults.
If the lamp is controlled by CAN message, the pins don t need to be connected.

Name ID Cycle time Type Byte Bit Parameter CAN Resolution

SVS
DM1 00:lampoff
0x18FECA00 1000ms Tx Byte1 2-1 Lamp
Single 01:lamp on
Status
SVS
DM1 00:lamp off
0x18EBFF00 50 Tx Byte2 2-1 Lamp
Multi 01:lamp on
Status

Engine speed output

Pin No.: 3.15(Master ECU), 35#(47P connector)
Functional description: This pin outputs the Pulse Width Modulation (PWM) square
wave signal to provide the engine speed information for the ordinary instruments,
and t he speed is 4 pulses per revolution by default. If the instrument used is a Con-
troller Area Network (CAN) instrument, it is not necessary to connect this pin.
Note:
When matching the instrument, it is necessary to inform the engine manufacturer of the
receiving pulse number of the instrument. 1 pulse/revolution, 2 pulses/revolution and 4
pulses/revolution are recommended.
CAN message:
If the engine speed is from CAN message, the pins don t need to be connected.

Name ID Cycle time Type Byte Bit Parameter CAN Resolution

Byte Engine Scale:0.125rpm/bit

EEC1 0x0CF00400 10ms Tx 8-1
4-5 speed Offset: 0

Intake air heating function

Grid heater relay Pin No.:
2.15/2.19 (Master and slave ECU)
Preheat lamp Pin No.: 3.24/3.45
(Master ECU), 6#/10# (47P con- Figure 2.7.1J-Intake Air Heating
nector)
Functional description:
ECU senses the ambi ent temperature based on the temperature sensor on the en-
gine and aut omatically controls the operation of the intake grille via the intak e air
heating relay to facilitate cold start. When the intake air heating is working, the light
will stay on. After the air intake heat ing is completed, the light will flash 3 times and
then go out.
CAN message:
Preheat lamp can be controlled by SHUTDN message. If the lamp is controlled by CAN

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message, the pins don t need to be connected.

Cycle
Name ID Type Byte Bit Parameter CAN Resolution
time
Pre-heating 00: Lamp off
SHUTDN 0x18FEE400 1000ms Tx Byte 4 2-1
Lamp 01: Lamp on
Water in fuel alarm function
Water in fuel sensor Pin No.:
2.16/2.42/2.04 (Master ECU), 3#
(47P connector)
Water in fuel lamp is controlled by Figure 2.7.1K-Water in Fuel Alarm

CAN message below

Name ID Cycle time Type Byte Bit Parameter CAN Resolution

00:No water pre-

sent in the fuel
Water In
Byte 01:water present
WFI 0x18FEFF00 50ms Tx 2-1 Fuel Indi-
1 in the fuel
cator
10:Error Value
11:Not available
Functional description: It is used to detect the water accumulated in the water cup of
the fuel coarse filter. When the water le vel exceeds the MA X scale, the water level
sensor (switch signal) will input the signal to ECU, and ECU will light up the water in
fuel lamp to prompt the operat or to drain the water as soon as possible and to
maintain the coarse filter.

CAN communication
CAN1: Connect diagnostic device such as DiagSmart, flash, calibrate, etc.
Master ECU: 4.29/4.28/4.15, 47P connector: 36#/37#
Slave ECU: 4.29/4.28/4.15, 47P connector: 40#/41#
CAN2: Communication between ECU and meter, etc.
CAN3: Communication between master ECU and slave ECU.
Connection requirements:

If the shielded wire is used for the CAN line, make sure that the shielded line is
grounded only at one end and left open at the other end. Do not connect the two
ends to ground. This prevents interference caused by the current to ECU.
Before delivery, CAN bus related pins of master and slave ECU have already
been connected to 47P connector, customer only need to connect CAN met er to
38#&39# of 47P connector.
In order to ensure data transmission of dual ECU, and meet the requirements of
diagnostic software such as DiagSmart, it is necessary to connect the flash pins
of master ECU to OBD connector.

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Fuel pre-supply pump

Pin No.: 29#/30# (31P connector)
Functional description: Fuel
pre-supply pump is controlled by
T15 switch, not by ECU. When turn
on T15, the Fuel pre-supply pump
will work for 3min to vent the air in
the low pressure line. The pump
can work for 3min again when turn
off and then turn on the T15 switch.
Connection requirements: The
OEM needs to connect 31P con- Figure 2.7.1L-Fuel pre-supply pump
nector according to terminal dia-
gram.

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Diagnostic interface
Diagnostic interface connector has a standard OBD II 16-pin interface: square
Part number: AMP 179631-1/2 Terminal: 776001-1

Figure 2.7.1M-Diagnostic interface

OBD1 (White) OBD2 (Black)

OBD 47P 47P
Description OBD No. Description
No. connector connector
1 Not used 1 36# CANH1
4 GND/Shielded GND( Battery -) 4 GND/Shielded GND( Battery -)
6 38# CANH2 6 40# CANH2
9 Not used 9 37# CANL1
14 39# CANL2 14 41# CANL2
16 +24V +24V( Battery +) 16 +24V +24V( Battery +)

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2.8 Electronic Governor System for Mechanical Pump Engine

2.8.1 The Principle of the Electronic Governor System

Its system type is all-electronic single pulse speed and clos e loop position structure, provided
with functions of non-corres ponding or corresponding control, speed and rated speed during
running maximum fuel supply control, emergency stop and etc.

e-
quirements.

Figure2.8.1A-Principle of the Electronic Governor System

2.8.2 Speed Controller

The basic electronic characteristics

Supply voltage : DC 24V Scope 18V 32V or DC12V Scope9V 16V

Supply consumption: < 0.1A (static state)

Speed fluctuation ratio

Steady state speed droop: 0~5% Adjustable

Ambient temp. : -40°C ~ +85°C

Relative humidity: <95%

2.8.3 The Electromagnetic Actuator

The Electromagnetic Actuator is the executive element of the electronic governor. C2002
speed Controller that is single-loop control mode can matching all kinds of electromagnetic
actuator, such as A800C-W, A900C-W, A1000C-W-d1, A2000C-W-d1, A08A-W, A1AWL,
A1AWT, A3A-W, A3B, CA2-W.

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2.8.4 Speed Pick-up

The Speed Pick-up of the Electromagnetic Governor is Speed Pick -up of magnetoelectricity,
inner structure of which are made of sensor, loop, alnico and plug. Its structure ref ers to Figure
2.8.4A. The gap bet ween the magnetic speed sensor and the ring gear teeth should not be any
smaller than 0.02 in. (0.45 mm). Usually, backing out the speed sensor 3/4 turn after touching
the ring gear tooth will achieve a satisfactory air gap.

Figure2.8.4A-Speed Pick-up Structure

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2.9 Air Intake and Exhaust System

2.9.1 Air Intake and Exhaust System of 6M33

1-Air Filter
2-Turbocharger
3-Air Inlet Pipe before Intercooler
4-Intercooler
5- Air Inlet Pipe After Intercooler

Figure2.9.1A-Overall Layout of Air Intake System

1-Exhaust Port
2-Exhaust Manifold
3-Turbocharger
4-Exhaust Pipe

Figure2.9.1B-Overall Layout of Exhaust System

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