JLG G12-55A Service Manual - Manual (Page 161)

9-19 G10-55A, G12-55A
Electrical System
9.5.10 Power Unit Schematic - John Deere
MY1090
CL
T
TMP
OIL
PSI
HR MTR
(4
AWG
, RED)
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
OVR SGN/918
TO CHASSIS ASSEMBLY
PLUGGED PLUGGED TRANS SOL
Y5
TRANS SOL
Y4
PLUGGED TRANS SOL
Y3
TRANS SOL
Y2
PLUGGED PLUGGED TRANS SOL
Y1
TRANS
TMP
SW
PLUGGED GAGE PWR THR R
TN/914
OIL
PSI
ST
RL
Y
HR MTR THR SGN/915 OVR SUP/91
1
FAUL
T L
T/473
AL
T EXC
ECU GND/050 PK BRK SOL ENG GND CL
T
TMP
ECU BA
T/022
ECU IGN/012
MANIFOLD
AIR
TEMP
SENSOR
COOLANT
TEMP
SENSOR
FUEL
TEMP
SENSOR
CRANK SENSOR
SENSOR
OIL
PRESSURE
INJECT
OR
PUMP
DEERE ENGINE ECU
DIAGNOSTIC CONNECT
OR
CAN
TERMINA
TOR
CAN
TERMINA
TOR
ECU IGN/012
ECU IGN/012
ECU BAT/022
ECU GND/050
ECU GND/050
(SHIELD/020)
(SHIELD/020) (SHIELD/020)
ENG GND
ENG GND
ENG GND
ENG GND
ENG GND
ENG GND
ENG GND
OVR SUP/911
OVR SUP/911
OVR SGN/918
FAUL T L T/473
6A/400V
AL
T EXC
A
THR SGN/915
THR RTN/914
THR RTN/914
THR RTN/914
THR RTN/914
THR RTN/914
ST
RL
Y
GAGE PWR
SHTDN/941
SHTDN/941
INJ B/493
INJ B/493
CLT/461
CLT/461
CRANK A/447
CRANK A/447
390 OHM, 1W
HI LO/947
PLUGGED
FUEL TMP/428
FUEL TMP/428
MAN TMP/463
MAN TMP/463
CRANK B/448
CRANK B/448
PLUGGED
CAN L/905
(CAN L/905, GREEN)
(CAN L/905, GREEN) (CAN L/905, GREEN)
PLUGGED
OIL PRS/467
OIL PRS/467
CAN H/904
(CAN H/904, YELLOW)
(CAN H/904,
YELLOW)
(CAN H/904,
YELLOW)
PLUGGED
PLUGGED
PLUGGED
PLUGGED
PLUGGED
PLUGGED
INJ A/491
INJ A/491
PLUGGED
PLUGGED
PLUGGED
PLUGGED
PLUGGED
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
PLUGGED
SHIELDED CABLE SHIELDED CABLE
12
TURNS
PER FOOT TWIST
SHIELDED CABLE
HD36-24-29SE
POWER UNIT HARNESS
12
TURNS
PER FOOT TWIST
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
RESIST
OR LOCA
TED
AT
SPLIT
OF CRANK
SENSOR WIRES
A/447&
B/448 IN ENGINE ECU HARNESS
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
G3
A2
A1
A3
B1
B2
B3
C2
C1
E3
D1
C3
D2
E1
D3
E2
F3
F1
F2
G2
G1
K1
H2
H1
H3
J2
J1
J3
K2
K3
C
A
B
F
D
E
H
G
J
C A B C A B
D+
A
120 OHM
B
C
A
A
B
A
B
A
B
A
B
A
B
B
A
A B 1 2
120 OHM