Service Manual
Trucks
Group 37
Release 01
Wiring diagram
FM9, FM12, FH12, FH16, NH12 VERSION2
FM, FH CHID A610059–
FM, FH CHID B411901–
20037631
Foreword
The descriptions and service procedures contained in this manual are based on designs
and methods studies carried out up to September 05.
The products are under continuous development. Vehicles and components produced
after the above date may therefore have different specifications and repair methods.
When this is judged to have a significant bearing on this manual, supplementary service
bulletins will be issued to cover the changes.
The new edition of this manual will update the changes.
In service procedures where the title incorporates an operation number, this is a
reference to V.S.T. (Volvo Standard Times).
Service procedures which do not include an operation number in the title are for general
information and no reference is made to V.S.T.
The following levels of observations, cautions and warnings are used in this Service
Documentation:
Note: Indicates a procedure, practice, or condition that must be followed in order to have
the vehicle or component function in the manner intended.
Caution: Indicates an unsafe practice where damage to the product could occur.
Warning: Indicates an unsafe practice where personal injury or severe damage to the
product could occur.
Danger: Indicates an unsafepractice where serious personal injury or death could occur.
Volvo Truck Corporation
Göteborg, Sweden
Order number: 20037631
© 05 Volvo Truck Corporation, Göteborg, Sweden
All rights reserved. No part of this publication may be reproduced, stored in
retrieval system, or transmitted in any forms by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written
permission of Volvo Truck Corporation.
ENG18353
Contents
Example of wiring diagram ................................................................... 2
Component wiring diagram index ........................................................ 5
Component wiring diagrams ................................................................ 8
Illustrations index ................................................................................ 90
Illustrations ........................................................................................... 91
Fuses ................................................................................................... 171
Relays ................................................................................................. 173
Wiring harness illustration index ..................................................... 175
Earth connections ............................................................................. 178
List of earth connections .................................................................... 180
List of connectors .............................................................................. 181
List of components ............................................................................ 189
Abbreviations ..................................................................................... 195
Cable colour code .............................................................................. 197
Feedback
1
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Example of wiring diagram
Example of wiring diagram
Component wiring diagram title, variant/subtitle and
symbol.
Coordinates (B 1).
30 Voltage battery, kl.30.
15 Voltage with starter key in drive position, kl.15.
DR Voltage with starter key in drive position, preheat
position and start position, kl.DR.
61 Voltage when alternator charges, kl.61.
Splice.
Fuse.
Reference arrow, for diagram BA, coordinates 0 C,
component A17, connector PA pin 29.
2
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Example of wiring diagram
The maximum of variants are drawn, think about that all
wires and components are not standard for all markets or
vehicle models.
Switch.
Relay.
Conductor on circuit card.
Connector MB terminal 9.
Wire area and colour.
Thin lines, wires.
3
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Example of wiring diagram
Earth connection point 4, earth connection 1 and wire 2.
Earth connection to circuit card.
Earth connection without wire.
Same splice can be drawn on several diagrams. The wire
from the splice to the earth connection point will only be
drawn and coded on one diagram. On the other diagrams
will only the earth connection point be written besides the
splice.
4
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagram index
Component wiring diagram index
AA
AB
AC
AE
BA
BE
BI
BM
BN
BU
BX
BY
CM
CO
CP
CS
DB
DC
DE
DI
DM
DN
DQ
DU
EE
EI
EO
EP
FA
FG
FI
FK
FM
FO
FP
Power supply, starting system ........................................................................................
Remote main switch .......................................................................................................
Power distribution ...........................................................................................................
ADR, main switch ...........................................................................................................
Vehicle ECU ....................................................................................................................
ACC Adaptive cruise control ...........................................................................................
Instrument cluster ...........................................................................................................
Tachograph in dash ........................................................................................................ page 15
Tachograph in shelf ......................................................................................................... page 16
Dynafleet ........................................................................................................................
FMS Gateway .................................................................................................................
Volvo link (VERS-SAM) ..................................................................................................
Engine interface ..............................................................................................................
Engine D9 .......................................................................................................................
Engine D12 .....................................................................................................................
Engine D16 .....................................................................................................................
ISX functions, 12V trailer ABS converter (AUS only) ......................................................
Engine ISX (AUS only) ...................................................................................................
Gear selector ECU (GEARTRONIC) ..............................................................................
Gear selector ECU (I-SHIFT/POWERTRONIC) .............................................................
Geartronic automatic gearshift .......................................................................................
Powertronic .....................................................................................................................
Retarder manual gearshift ..............................................................................................
I-shift ...............................................................................................................................
Power take off .................................................................................................................
Diff-lock ...........................................................................................................................
ABS basic, D-version ......................................................................................................
ABS/ASR D-version ........................................................................................................
EBS ECU ........................................................................................................................
EBS modulators ..............................................................................................................
Air-suspension ...............................................................................................................
Load indikator .................................................................................................................
Bogie lift A-ride ...............................................................................................................
Bogie lift A-ride with axle load limiter ..............................................................................
Axle lock, self steered axle .............................................................................................
Electronic steered axle ...................................................................................................
Hydraulic steered axle ....................................................................................................
page 8
page 9
page 10
page 11
page 12
page 13
page 14
page 17
page 18
page 19
page 20
page 21
page 22
page 23
page 24
page 25
page 26
page 27
page 28
page 29
page 30
page 31
page 32
page 33
page 34
page 35
page 36
page 37
page 38
page 39
page 40
page 41
page 42
page 43
page 44
5
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagram index
FQ
FU
GA
GB
GC
GD
GE
GF
GG
GH
GI
GK
GM
GQ
GU
HG
HI
HM
HP
HY
HZ
IA
IE
IF
IH
IM
IQ
IR
IS
IU
IX
IZ
KA
KE
Air dryer ..........................................................................................................................
Central lubrication system ..............................................................................................
LCM head lights ..............................................................................................................
LCM trailer ......................................................................................................................
LCM rear lights ...............................................................................................................
HID lamps ......................................................................................................................
Rear lights overhang .......................................................................................................
Rear lights, India/Korea ..................................................................................................
Trailer connections, RIGID ..............................................................................................
Trailer connections, TRACTOR .......................................................................................
LCM head lights (VERS-SAM TYPE-N) .........................................................................
Trailer connections (AUS only) .......................................................................................
Wiper, washer .................................................................................................................
Horn ................................................................................................................................
Headlights adjust ............................................................................................................
Climate unit, CU,-BAS,-MCC,-ECC ................................................................................
Air heater ........................................................................................................................
Water heater ...................................................................................................................
Short stop cab heater .....................................................................................................
Climat unit, CU,-HEAT,-ACMAN,-ACAUT. .......................................................................
Air cooler, Brazil ..............................................................................................................
El. heated/adj. seat ........................................................................................................
El. heat/adj. mirrors, El. window winders .......................................................................
Foldable mirror bracket ...................................................................................................
Interior light .....................................................................................................................
Central locking, immobiliser ............................................................................................
El. sunroof, cig. lighter, refrigerator ................................................................................
12V power supply ...........................................................................................................
SWM, SRS. Air-bag ........................................................................................................
Radio ..............................................................................................................................
Integrated telephone .......................................................................................................
Backup camera ...............................................................................................................
Cab tilt ............................................................................................................................
Load light, 5:th wheel lamp .............................................................................................
page 45
page 46
page 47
page 48
page 49
page 50
page 51
page 52
page 53
page 54
page 55
page 56
page 57
page 58
page 59
page 60
page 61
page 62
page 63
page 64
page 65
page 66
page 67
page 68
page 69
page 70
page 71
page 72
page 73
page 74
page 75
page 76
page 77
page 78
KI
KM
ME
NA
6
Light sign ........................................................................................................................
Beacon warning light ......................................................................................................
Extra fuse block, key switch relay ...................................................................................
Body builder (BB), auxsw-6 and swapbody ....................................................................
page 79
page 80
page 81
page 82
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagram index
NC
NI
NK
NU
OA
XA
XB
Body builder (BB), ELCE-CK, BBM, PTO2 .....................................................................
Extra spotlamps front/roof, max 4x70W ..........................................................................
Burglar alarm ..................................................................................................................
Body builder (BB), DUAL-SPEED ...................................................................................
Tyre pressure monitoring (TPM) .....................................................................................
Bus J1708/J1587 ............................................................................................................
Bus J1939 .......................................................................................................................
page 83
page 84
page 85
page 86
page 87
page 88
page 89
7
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
Component wiring diagrams
8
T3018701
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018702
9
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
10
T3018703
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018704
11
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
12
T3018705
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018250
13
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
14
T3018706
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018763
15
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
16
T3018707
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018254
17
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
18
T3017639
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018760
19
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
20
T3018708
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018225
21
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
22
T3017643
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017644
23
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
24
T3018256
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3016261
25
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
26
T3018709
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018710
27
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
28
T3018259
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018711
29
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
30
T3017651
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018712
31
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
32
T3018713
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018714
33
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
34
T3017655
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017656
35
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
36
T3017657
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017658
37
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
38
T3018715
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018262
39
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
40
T3018263
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018264
41
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
42
T3018265
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018716
43
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
44
T3018267
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018717
45
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
46
T3017667
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018268
47
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
48
T3018718
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018270
49
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
50
T3018719
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018271
51
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
52
T3018720
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018721
53
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
54
T3017674
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018772
55
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
56
T3018722
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018274
57
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
58
T3018275
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017678
59
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
60
T3017679
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018723
61
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
62
T3017681
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017682
63
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
64
T3017683
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017684
65
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
66
T3017685
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018724
67
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
68
T3018276
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017688
69
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
70
T3018761
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018277
71
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
72
T3017691
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018725
73
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
74
T3018726
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018727
75
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
76
T3018278
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017696
77
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
78
T3017697
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3017698
79
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
80
T3017699
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018279
81
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
82
T3018728
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018280
83
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
84
T3017703
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018729
85
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
86
T3018730
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018731
87
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
88
T3018732
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Component wiring diagrams
T3018733
89
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations index
Illustrations index
-
-
-
1000
1006
1007
1018
1020
1025
1030
1037
1040
1047
1056
1062
1063
1072
1077
1083 Wiring harness, door ............................................................. page 141
1086
1401
1403
1435
1436
1458
1460
1470
1472
1476
1484
1493
1494
1499
1501
1502
1503
1504
1505
1506
1507
1508
Aerial ..................................................................................... page 91
Battery cables ........................................................................ page 92
Switches ................................................................................ page 94
Cab/chassis interface ............................................................ page 96
Wiring harness, instruments .................................................. page 98
Wiring harness, roof .............................................................. page 108
Wiring harness, floor .............................................................. page 113
Wiring harness, air conditioning ............................................ page 121
Wiring harness, cowl ............................................................. page 122
Wiring harness, engine-chassis ............................................. page 124
Wiring harness, engine .......................................................... page 126
Wiring harness, bogie lift .......................................................
Wiring harness, frame ........................................................... page 130
Wiring harness, roof beacon light .......................................... page 132
Wiring harness, air dryer ....................................................... page 134
Wiring harness, parking heater,frame ................................... page 135
Wiring harness, trailer connections ....................................... page 136
Wiring harness, air suspension chassis ................................ page 138
Wiring harness, side marking lamps .....................................
Wiring harness, ABS chassis ................................................
Wiring harness, solenoid valves ............................................
Wiring harness, retarder ........................................................
Wiring harness, main switch ..................................................
Wiring harness, roof sign lighting .......................................... page 132
Wiring harness, front wheel drive ..........................................
Wiring harness, cab-battery box ............................................ page 150
Wiring harness, el.operated mirror arch ................................ page 166
Wiring harness, load indicator ............................................... page 154
Wiring harness, cab-engine ................................................... page 124
Wiring harness, floor gear shift selector ................................ page 155
Wiring harness, power steering ............................................. page 157
Wiring harness, gearbox ........................................................ page 159
Wiring harness, cab-gearbox ................................................. page 159
Wiring harness, upper front ................................................... page 164
Wiring harness, lower front left .............................................. page 164
Wiring harness, lower front right ............................................ page 165
Wiring harness, firewall ......................................................... page 166
Wiring harness, body builder connections ............................. page 168
Wiring harness, demountable (swap-body) ........................... page 168
Wiring harness, ESP chassis ................................................ page 169
Wiring harness, TPM ............................................................. page 170
page 129
page 140
page 143
page 147
page 149
page 150
page 153
90
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
Illustrations
T3016936
91
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
92
T3017762
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
T3017763
93
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
94
T3018734
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
T3018735
95
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
96
T3018314
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
T3018315
97
Group 37 Wiring diagram FM9, FM12, FH12, FH16, NH12 Illustrations
98
T3018736
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