JLG G12-55A Service Manual - Manual (Page 162)

Electrical System
9-20 G10-55A, G12-55A
9.5.11 Power Unit Schematic - Perkins
2
3
7
8
9
10
15
16
20
21
22
33
40
41
45
54
57
59
60
63
RELA
Y
CSA
RL
Y PWR
30 86 85 87
CSA
RL
Y PWR
ECU IGN/012
COLD ST
AR
T AID
GLOW PLUG PWR
TO GLOW PLUGS
ECU BAT/022
CAN H/904
CAN L/905
SHIELD/020
THR RTN/914
ECU IGN/012
THR SUP/911
IVS
THR SGN/915
COLD STAR T AID
ENG WARN L T
EN T STO P LT
WAI T T O STA RT LT
64 PIN
NOTE: ONL
Y
USED CONNECTIONS SHOWN
CL
T
TMP
OIL
PSI
HR MTR
AL
T PWR
AL
TERNA
TOR ST
AR
TER
TRANS SOL Y3
TRANSMISSION
TRANS SOL Y1
TRANS SOL Y2
Y1
Y2
TRANS SOL Y4
TRANS SOL Y5
PK BRK SOL
ENG GND
TRANS TMP SW
Y4
Y3
Y5
Y6
ENG W
ARN L
T
TO CHASSIS ASSEMBLY
PLUGGED SHIELD/020
TRANS SOL
Y5
TRANS SOL
Y4
CAN H/904
TRANS SOL
Y3
TRANS SOL
Y2
PLUGGED W
AIT
T
O ST
AR
T
TRANS SOL
Y1
TRANS
TMP
SW
IVS GAGE PWR
THR R
TN/914
OIL
PSI
ST
RL
Y
HR MTR
THR SGN/915 THR SUP/91
1
ENG ST
OP
L
T
AL
T EXC
ECU GND/050 PK BRK SOL
ENG GND CL
T
TMP
ECU BA
T/022
ECU IGN/012
CAN
TERMINA
TOR
(SHIELD/020)
ENG GND
ENG GND
ENG GND
ENG GND
ENG GND
ENG GND
ENG GND
6A/400V
AL
T EXC
A ST
RL
Y
GAGE PWR
ECU GND/050
(CAN L/905, GREEN) (CAN H/904,
YELLOW)
ST
RL
Y PWR
ST
RL
Y PWR
STR
T SOL
STR
T SOL
(3/0
AWG
, RED) (3/0
AWG
, BLACK)
(3/0
AWG
, RED)
(3/0
AWG
, BLACK)
(4
AWG
, RED)
(3/0
AWG
, RED)
Y6 (ONL
Y IF P
ARK BRAKE OFF)
N1 N3 N4 N2
Y6 (ONL
Y IF P
ARK BRAKE OFF)
Y6 (ONL
Y IF P
ARK BRAKE OFF)
Y6 (ONL
Y IF P
ARK BRAKE OFF)
R4 R3 R2 R1 F4 F3 F2 F1 GEAR
Y2,
Y3,
Y4,
Y6
Y2,
Y3,
Y5,
Y6
Y2,
Y3,
Y6
Y2,
Y6
Y1,
Y6
Y1,
Y3,
Y6
Y1,
Y3,
Y5,
Y6
Y1,
Y3,
Y4,
Y6
TRANSMISSION LEGEND
ACTIV
ATED
TRANS SOLENOIDS
ENG GND
PK BRK SOL
6A/400V
CAN L/905
SHIELDED CABLE
HD36-24-29SE
POWER UNIT HARNESS
NEGA
TIVE CABLE
TO BA
TTER
Y
POSITIVE CABLE TO BA
TTER
Y
ST
AR
TER
RELA
Y
ENGINE OIL PRESSURE SWITCH CL
T
TEMP
SENDER OIL
PRESS
SENDER
PARK BRAKE VA
LV
E
5 PSI
G B+
M
85 86 87 30
B
AA
B
A
B
B
A
A
BB
A
250 F
7 29 28 26 27 24 25 15 23 22 20 21 18 19 16 17 11 13 14 12 9 10 8 3 5 6 4 1 2
1
C A B
D+
A
B
A
A B 1 2
120 OHM
MY1820
PERKINS ECM