Sinoboom TB20J Plus - Electrical Schematic Diagram of; Engine

ELECTRICAL SYSTEM
TB20J Plus Maintenance Manual 131
© Feb. 2023
Electrical Schematic Diagram of
Engine
Fig 8 Electrical schematic of engine (WEICHAI WP3.2/China IV)
Start Relay
Glow Plug Relay
K2
K15
02
K04
16
17
*205
GND
02
07
Alarm&Shutdown Relay
BAT2
BAT1
12V
M
30
50
31
E
-
B+
D+
G
Starter
Alternator
B+
(70.0)
(16.0)
(1.0)
(10.0)
(70.0)
(Fuse Box)
(70.0)
S1
FU4 400A
17
B02
M
_
M4
M1
15
G1
Glow plug
K5
ECU Power Supply Relay
02
K01
14
15
*37
K21
30
FU5 150A
GND
B01
(6.0)
FU8 50A
250Ω/5W
07
Fuel Pump
K19
ECU13-12
I_A_TL B_D_CANL1 I_S_GNSW V_V_5VVSS
I_S_T15 V_V_BAT_D I_S_T50
K58
K12 K33
K30 K64 K48
K34
K27
I_S_RMTEN
K57
O_T_CTOS
K03
O_F_ENGE
K23
I_F_VSS
K06
G_R_VSS
K25
V_V_5VAPP1
K70
O_S_MPR
K21 K68 K10 K37 K49 K39 K22
K59 K32 K81 K80 K76
K44
K63
K45
V_V_BAT_C V_V_BAT_B V_V_BAT_A
G_R_TL B_D_CANH1 G_R_CAN1 B_D_CANL0 B_D_CANH0 G_R_CAN0 I_A_APP1
K51
G_R_APP1
K69 K50 K15 K14
V_V_5VAPP2 I_A_APP2 G_R_APP2
I_S_STP
K29
I_S_CRCPOS
K28
I_S_CRCNEG I_S_CRCOFF I_S_CRCRES I_S_CONV O_S_PREH O_S_WIFLP
K41
O_S_DIA
K62
O_T_FAN1
K43
O_S_FAN2
K05
O_T_ACR
K01
O_S_IMPH
K77 K36 K78
V_V_5VRMTAPP1 I_A_RMTAPP1 G_R_RMTAPP1
K60 K18 K79
V_V_5VRMTAPP2 I_A_RMTAPP2 G_R_RMTAPP2
K04
O_S_STRT
K35
I_S_WFS
K46
G_G_GAT-1
K47
G_G_BAT-2
*TCANL
*TCANH
F1
GND TCANL TCANH CANH2 CANL2
16
4 9 1 6
14
TOOL PORT T1
*CANH2
*CANL2
Turntable Control Box
A83
V_V_5VFSS
A108
I_F_FSS
A89
G_R_FSS
A106
I_F_CRSPOS
A98
I_F_CRSNEG
A90
G_R_CRS
A84
V_V_5VCAS
A91
I_F_CAS
A99
G_R_CAS
A87
V_V_5VBPS
A96
I_A_BPS
A97
G_R_BPS
A94
I_A_BTS
A85
V_V_5VOPS
A88
V_V_5VRAILPS
A110
I_A_RAILPS
A95
G_R_RAILPS
A93
I_A_CTS
A86
G_R_CTS
I_A_OPS G_R_OPS I_A_OTS
A101 A92 A111
O_T_MEU
A113
O_S_MEU
A112
O_P_SVH11
A117
O_P_SVL11
A121
O_P_SVH12
A120
O_P_SVL12
A118
O_P_SVH21
A114
O_P_SVL21
A115
O_P_SVH22
A119
O_P_SVL22
A116
07
WATER_IN_FUEL
COOLANT_TEMPERATURE
OIL_PRESS_SWITCH
VEHICLE_SPEED_SENSOR
AIR_INLET_TEMPERATURE&PRESSURE_SENSOR
RAIL_PRESSURE_SENSOR
CRANKSHAFT_SPEED_SENSOR
FAN_SPEED_SENSOR
OIL_METERING_UNIT OIL_ATOMIZER_CYL1 OIL_ATOMIZER_CYL2 OIL_ATOMIZER_CYL3 OIL_ATOMIZER_CYL4
1 2 1 2 1 2 1 2 1 2
(4.0)
(2.5)
(2.5)
(1.0)
18
*CANH2 *CANL2
*37
GND
B06
*B05
K25
FU9 10A
Control Power Switch
*05
K44
I_S_BRKMN I_S_DIAREQ I_S_ENGSA
K11 K31 K67 K65
G_G_BAT-3
K66
G_G_BAT-4
GND
(1.0)
GND GND GND GND
K30
05
120Ω
A83
A108 A89 A106 A98 A90 A84 A91 A99 A87 A96 A97 A94 A88 A110 A95 A93 A86
*TCAN-SH
*CAN2-SH
A92 A111 A113 A112 A117 A121 A120 A118 A114 A115 A119 A116
K21
K01 K04
*K44
K44 K44
K44
K44
(2.5)
K44
GND
FU10 5A
K35
A
B
n
n
P&t
U
p
U
t
U
FU7 25A
+
--
+
Power switch box