3 ELECTRICAL SYSTEM

Batteries 90824 Electrical schematic A04 90962 A04B

ECU's 90846 Electrical schematic A05 90962 A05
Electric central foto 90881 Electrical schematic A06 90962 A06
Electric central 90882 Electrical schematic A07 90962 A07
Network signal transfer 90876 Electrical schematic A08 90962 A08A
Message package 90877 Electrical schematic A09 90962 A09
Data link wiring 90874 Electrical schematic A10 90962 A10A
Machine network 90873 Electrical schematic A11 90962 A11
Service connections 90979 Electrical schematic A12 90962 A12A
ECU Hardware 90875 Electrical schematic A13 90962 A13
Voltage supply of control units 90872 Electrical schematic A14 90962 A14A
Engine sensors 90885 Electrical schematic A15 90962 A15
Air temperature sensor/ pressure drop ind. 90971 Electrical schematic A16 90962 A16
Oil pressure/temp and fuel pressure sensor 90972 Electrical schematic A17 90962 A17
Engine coolant temp and level sensors 90973 Electrical schematic A18 90962 A18A
Engine speed sensors 90974 Electrical schematic A19 90962 A19
Torbo boost pressure/temp sensor 90975 Electrical schematic A20 90962 A20
Functions controlled by EECU 90976 Electrical schematic A21 90962 A21A
Unit injectors 90977 Electrical schematic A22 90962 A22
Right side of cab 90811 Electrical schematic A23 90962 A23
Electrical schematic explanation of symbols 90961 Electrical schematic A24 90962 A24A
Ground points 90980 Electrical schematic A25 90962 A25
Electrical schematic A01 90962 A01A Electrical schematic A26 90962 A26
Electrical schematic A02 90962 A02 Electrical schematic A27 90962 A27A
Electrical schematic A03 90962 A03A Electrical schematic A28 90962 A28

CLICK THE VOLVO-LOGO IN

MAIN THE LOWER RIGHT CORNER
MENU TO RETURN TO THIS MENU
Volvo Construction Equipment 90824
Customer Support AB
Volvo Construction Equipment 90846
Customer Support AB
Volvo Construction Equipment 90881
Customer Support AB
 A1397300

Volvo Construction Equipment 90882

Customer Support AB
 V J1939 V J1708
A4 A5
2.5

B1 J1708
B0 “1” “0”

“0” “1” “0” “1”

Volvo Construction Equipment 90876

Customer Support AB
 1 0 1 1 1 011 010 11011 00000000 0 0 0 1 0 11 0

187 091 000 022

128 + 64 + 32 + 16 + 8 + 4 + 2 + 1

187 1 0 1 1 1 0 1 1

091 0 1 0 1 1 0 1 1

000 0 0 0 0 0 0 0 0

022 0 0 0 1 0 1 1 0

Volvo Construction Equipment 90877

Customer Support AB
Volvo Construction Equipment 90874
Customer Support AB
 EECU DECU CECU VECU TECU
MID128 MID140 MID171 MID178 MID187 MID130
CM LM

CAN1/1939
CAN2/J1939
J1708/1587

IA PC

Volvo Construction Equipment 90873

Customer Support AB
Volvo Construction Equipment 90979
Customer Support AB
 EPROM/FLASH
SAE J 1939 INTERFACE
E 2 PROM

INTERFACE
CONTROLLER

INTERFACE
CONTROLLER

SAE J 1708
WITH
INTEGRATED
MICROPROCESSOR

Volvo Construction Equipment 90875

Customer Support AB
 FU23

LX9
EB14 EB14 EB14 LY22

EB42 EC14 EB28 EB42 EB28 EB42 EB28 EB9 EB11 EB42 LX30
EB10 EB12 LX10
CX4
GND
FU25 FU24 FU4 FU12 FU26

BAT+
RE3701
RE3703 RE3705
BAT-C

SW3301

RE3702

BAT+
BA3201/3202
GND SW3701

Volvo Construction Equipment 80872

Customer Support AB
Volvo Construction Equipment 90885
Customer Support AB
Volvo Construction Equipment 90971
Customer Support AB
Volvo Construction Equipment 90972
Customer Support AB
Volvo Construction Equipment 90973
Customer Support AB
Volvo Construction Equipment 90974
Customer Support AB
Volvo Construction Equipment 90975
Customer Support AB
 1 2 3 4
Volvo Construction Equipment 90976
Customer Support AB
Volvo Construction Equipment 90977
Customer Support AB
Volvo Construction Equipment 90811
Customer Support AB
 31
14

B C
A

D
15
AL3201
F SE3201

16

G H

J K J
17

18

L 19

Volvo Construction Equipment 90961

Customer Support AB
 GF3

GF1
GFSM

A1500800

Volvo Construction Equipment 90980

Customer Support AB
 2

BL/R
A19 56 15-22

SB B R Y C R/BL
3 15-22 23102

SB A GN C06.5 BN/SB
4 31C
31GC1
31

8
9

10
A21 55
11
12

A0819500

Volvo Construction Equipment 90962 A01A

Customer Support AB
Volvo Construction Equipment 90962 A02
Customer Support AB
 11

13

A0819700

Volvo Construction Equipment 90962 A03A

Customer Support AB
 31
14

15
AL3201
C55.1 C55.2 C56.1 C56.2 W SE3201
560 ohm

FC3
16 3702 30
25A
FC4
50A RE3302
30

R/W

17

18

19

A0819800

Volvo Construction Equipment 90962 A04B

Customer Support AB
 20
21

10

18

22

23

24

25

26

Volvo Construction Equipment 90962 A05

Customer Support AB
 27

28

29

30

Volvo Construction Equipment 90962 A06

Customer Support AB
 31

27

32

Volvo Construction Equipment 90962 A07

Customer Support AB
 33

34

Volvo Construction Equipment 90962 A08A

Customer Support AB
 35
32

36

37

Volvo Construction Equipment 90962 A09

Customer Support AB
 19
34
38
39
36

A0820400

Volvo Construction Equipment 90962 A10A

Customer Support AB
 17

35

C35.2

14

Volvo Construction Equipment 90962 A11

Customer Support AB
 40

C35.5
31CEA

C35.4 EB7
31CEA 38102 38102

15A

41 58 A14

42 57 A14

A0820600

Volvo Construction Equipment 90962 A12A

Customer Support AB
 43

LC9901

LC9902

LC9903

LC9904

22

Volvo Construction Equipment 90962 A13

Customer Support AB
 C50.1 C50.2
120 ohm
Y C07.20 Y 29 A06
A25 44 CAN L CAN L
GN/Y C07.23 GN/Y
A25 45 CAN H
30 A06
CAN H
GR C07.24 GR
A25 46 1708A 1708A
OR C07.27 OR D-ECU
A25 47

CAN H
1708B 1708B

1708B
CAN L

1708A
LX8

GN/Y
500

OR
GR
Y

Y
LC9101 CY13

D-ECU CX1
LX16
501
OR LY1 LA3808 LA3807 CX2 BL
506 LC4202 CY12
A13 43 OR CY6 LX11
506 LC2502 IM3801 IM3802 LX17 502
LX1 GN
CY10
R/W L Y15 LC4201
511 LC3201 IM3803 IM3804 LY2 LX18
R/W CY5 503
LY3 BN
511 CY1
LC3802 IM3805 IM3806 LC2503
LX19 504
GR
LC3803 IM3807 IM3808 LC2601 CY2

LX20 505
C51.1 C51.2
V-ECU EC17
W
LC2201 CY15
120 ohm
EC30 EC16 L Y9 508
Y/R
EC31 EB38 CY4
LC5501
EB11 L Y10 509
BN/GR
LC5202 CY9
CAN H
CAN L

BL/OR
BL

L Y11 510
T -ECU EC17 OR/W
LC3801 CY25
EC30 EC16
L Y8 507
EC31 EB38 GN/Y
LC5201 CY17
EB11
L Y16 512
GN/OR
LC9102 CY14

C-ECU EC17 L Y17 513

BL/W
EC30 EC16 LC2501 CY3

EC31 EB38

120 ohm EB11 OR VCAD.3

C54.1 C54.2
1708B
GR
1708A
VCAD.2
PC
A14 A0820800
R VCAD.1
A12 57 15-3
Y/SB VCAD.4 VCAD.8
A12 58 DM SB31
31GC1 A04

Volvo Construction Equipment 90962 A14A

Customer Support AB
 R GN

SB BN

Y/SB Y/SB Y/SB

Y/SB V

26

27

18

19

Volvo Construction Equipment 90962 A15

Customer Support AB
 48

40

Volvo Construction Equipment 90962 A16

Customer Support AB
 49

48

Volvo Construction Equipment 90962 A17

Customer Support AB
 49

50

BN/SB
46204 46204 31C

C11.6
BN/SB BN/SB
31C 31C 31GC1

BN/SB
31C

BN/SB
31C

C12.34
BN/SB BN/SB
31C 31C 31GC1

BN/SB
31C

A0821200

Volvo Construction Equipment 90962 A18A

Customer Support AB
 6

51

C04.18
56 52106 52106
C11.12

52 52108 52108

Volvo Construction Equipment 90962 A19

Customer Support AB
 52

Volvo Construction Equipment 90962 A20

Customer Support AB
 C11.6
BN/SB BN/SB BN/SB 31GC1
31C 31C 31C

BN/SB C11.6 BN/SB

31C 31C
31GC1

BN/SB C12.34 BN/SB

31C 31C
31GC1

SE5502
W/R C27.2 C27.1 W EA1
A01 55 55102

W/R
53

C24.10

31

A0821500

Volvo Construction Equipment 90962 A21A

Customer Support AB
 54

21

GR 2
28
4 1 40
42

33

C35.1
15-21 15-21 15-21
38
C35.3
37

Volvo Construction Equipment 90962 A22

Customer Support AB
 50

15-8

39

Volvo Construction Equipment 90962 A23

Customer Support AB
 W/R
53
W/R
12

MA9102
EC4 C01.2
GN GN 1 2 BN/SB
54 91302 91302 31C

C01.4

31C BN/SB

31GC1
BN/SB C05.16 BN/SB
31C 31C
31GC1

51

20
BN/SB C12.34 BN/SB
31C 31C 31GC1

A0821800

Volvo Construction Equipment 90962 A24A

Customer Support AB
 EB.24
41
EB.4
13
EB.25
46
EB.26
47
EB.1
45
EB.2
44
EB.31

25

15

CO7.29

EB.5

EB.35
26
3 EB.36
GN/Y

EA.33

EB.11 EB.9

EB.12 EB.10
24 23

Volvo Construction Equipment 90962 A25

Customer Support AB
 EA.11

EA.22

EA.23

EA.12

EA.34

EA.35

EA.36

EA.24

Volvo Construction Equipment 90962 A26

Customer Support AB
 EA.25

EA.5

EA.2

EA.3

EA.1

EA.14

EA.13

EA.27

EA.4

A0822100

Volvo Construction Equipment 90962 A27A

Customer Support AB
 EA30

EA31

EA18

EA7

EB7

EB13

EB3

EB17

EB8

Volvo Construction Equipment 90962 A28

Customer Support AB