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Error Message Logged Result Of Fault Possible Causes
Main Pump Circt Yes • Main pump set to minimum output.
• Main pump PRV solenoid faulty.• Open in harness wiring for main PRV solenoid.• Harness wiring for main PRV solenoid shorted to ground.
Low Voltage No • None. • Battery voltage below 17 DCV.
RPM Setting Diff Yes• Engine operates at high idle (no effect on AEC or Heavy Lift operation).
• Engine speed requested does not match the actual governor actuator position.
RPM Setting High No• Low idle speed too low. Engine stall speed too high or low.
• Governor actuator position signal too high.• Open or shorted supply voltage circuit.• Low idle stop passed
Swing Pump Yes • Swing pump set to minimum output.
• Swing pump PRV solenoid faulty.• Open in harness wiring for swing PRV solenoid.• Harness wiring for swing PRV solenoid shorted to ground.
Low Engn Speed No • Hydraulic pump outputs are reduced.
• Signal from engine speed sensor indicates engine speed is below 800 rpm.• Engine speed sensor is faulty.• Open in harness wiring from engine speed sensor to controller.• Harness wiring for engine speed sensor is shorted to ground.• Incorrect number of flywheel teeth specified in parameter settings.
High Engn Speed Yes • Engine overload.• Engine stalls.
• Signal from engine speed sensor indicates engine speed is above 2200 rpm.• Incorrect number of flywheel teeth specified in parameter settings.
RPM Dial Setting Yes• Engine speed set to high idle (No effect on AEC or Heavy Lift operation).
• Engine speed dial is faulty.• Engine speed dial signal circuit has an open.• Engine speed dial supply voltage circuit has an open or is shorted to ground.• Engine speed dial signal circuit is shorted to ground.
Heavy Lift Circt Yes • Heavy lift does not operate correctly.
• Heavy lift solenoid is faulty.• Open in harness wiring for heavy lift solenoid.• Harness wiring for heavy lift solenoid is shorted to ground.
Mode. Sw Open Yes• Power mode 1 selected no matter what the position of the power mode switch.
• Mode switch is faulty.• Open in harness wiring for mode switch.• Mode switch supply voltage circuit has an open or is shorted to ground.
Mode Sw Short Yes• Power mode 1 selected no matter what the position of the power mode switch.
• Mode switch is faulty.• Short to ground in harness wiring for mode switch.
SYSTEM FAULTS DETECTED BY THE CONTROLLER
SENR6266-01June 1995
M318 ExcavatorElectrical System
8AL1-UP
©1995 CaterpillarAll Rights Reserved
Printed in U.S.A.
Machine Location Component Schematic
Location62 Alternator C-13
23 Battery (2x) H-12
A Beacon F-1
D Breaker - Circuit G-7
A Cigar lighter F-2
A Control - Engine C-12
A Control - Engine/pump C-11
26 Control - Supplemental steering H-13
A Converter D-3
D Diode - AEC aux-hyd F-7
D Diode - Brake D-6
D Diode - Stop-lamp/creeper-speed E-7
D Diode - Temperature E-6
D Fuse - Block A; B; C; D F-9
68 Fuse - Breaker circuit C-14
72 Governor actuator C-12
11 Horn - Forward C-1
29 Horn - Travel alarm H-14
A Light - Dome F-2
8 Light - Flood lamp D-1
A Light - Flood lamp front cab F-3
A Light - Flood lamp rear cab F-4
5 Light - Head lamp left F-1
12 Light - Head lamp right C-1
49 Light - License plate D-14
A Light - Reverse steering H-3
9 Light - Stick travel lamp D-1
48 Light - Stop/tail lamp left H-14
50 Light - Stop/tail lamp right B-14
47 Light - Turn lamp left H-14
51 Light - Turn lamp right A-14
6 Light - Turn signal left F-1
13 Light - Turn signal right B-1
A Magnet - Travel lock H-2
D Meter - Hour service E-5
A Monitor - PDT C-11
C Monitor panel C-2
55 Motor - Air conditioner fan E-13
25 Motor - Fuel pump H-13
20 Motor - Heater fan A-7
7 Motor - Lower wiper E-1
28 Motor - Supplemental steering H-12
A Motor - Upper wiper E-2
31 Motor - Washer lower G-12
30 Motor - Washer upper G-12
D Plug E-5
10 Plug - Stick travel lamp D-1
A Radio, speaker, antenna F-2
D Relay - AEC aux-hyd F-7
56 Relay - Air conditioner E-12
D Relay - Horn E-7
D Relay - Brake F-6
D Relay - Brake/travel cutoff D-4
D Relay - Creeper Speed E-7
D Relay - Flasher/warning light F-6
D Relay - Main power F-6
Component LocationMachine Location Component Schematic
Location
D Relay - Pilot press enable F-6
D Relay - Power mode F-6
69 Relay - Start C-14
D Relay - Start/stop D-6
D Relay - Stop lamp E-6
27 Relay - Supplemental steering H-12
D Relay - Temperature E-6
D Relay - Transmission speed F-6
D Relay - Travel alarm F-4
D Relay - Travel cutoff F-5
D Resistor - Backup main pump E-9
D Resistor - Backup swing pump E-9
C Resistor - Engine speed dial B-2
21 Resistor - Heater fan - B-8
22 Sender - A/C temp. regulator A-10
63 Sender - Coolant temperature D-12
46 Sender - Fuel level F-13
52 Sender - Hyd oil high temp & switch E-13
66 Sensor - Engine speed D-14
58 Solenoid - Air conditioner clutch D-13
38 Solenoid - Aux Hyd G-14
4 Solenoid - Blade rear lockout H-9
35 Solenoid - Creeper speed F-14
60 Solenoid - Engine start/stop D-12
71 Solenoid - Ether start C-13
44 Solenoid - Hammer E-12
59 Solenoid - Heavy lift D-13
32 Solenoid - Implement activation G-14
1 Solenoid - Lh. front stabilizer lockout G-1
37 Solenoid - Main pump pry G-13
40 Solenoid - Parking brake F-13
2 Solenoid - Rh. front stabilizer lockout G-1
34 Solenoid - Swing brake F-14
36 Solenoid - Swing pump pry G-13
41 Solenoid - Transmission speed F-12
33 Solenoid - Travel activation G-14
67 Starter C-13
C Switch - AEC B-10
45 Switch - AEC implement travel D-14
43 Switch - AEC swing F-14
C Switch - Air conditioner B-10
57 Switch - Air conditioner press D-13
70 Switch - Air filter clog C-14
B Switch - Aux hyd (ccw rotation) D-3
C Switch - Aux hyd (cw rotation) C-5
C Switch - Backup B-10
C Switch - Beacon B-4
17 Switch - Brake light H-5
B Switch - Brake light cutoff E-3
65 Switch - Coolant temp ether start C-12
64 Switch - Coolant temperature D-12
C Switch - Creeper speed C-6
24 Switch - Disconnect H-12
61 Switch - Engine oil press D-12
19 Switch - Forward/reverse travel alarm H-5
C Switch - Front flood lamp C-4
Component LocationMachine Location Component Schematic
Location
C Switch - Hammer B-7C Switch - Hazard B-4C Switch - Head lamp C-4C Switch - Heater fan B-9C Switch - Heavy lift B-l0A Switch - Horn G-2A Switch - Horn/turn/high beam G-354 Switch - Hyd oil filter clog E-1453 Switch - Hyd oil low temperature E-13C Switch - Key (start) C-6C Switch Lh. front stabilizer lockout B-8C switch - Lh. rear stabilizer lockout B-818 Switch - Low brake press G-542 Switch - Low trans clutch press F-13
A Switch - Lower windshield E-2
C Switch - Lower wiper B-6
15 Switch - Overload warning device A-5
C Switch - Overload warning device B-7
C Switch - Parking brake B-5
C Switch - Pilot control lock B-4
C Switch - Power mode C-6
16 Switch - Primary steering flow G-4
C Switch - Rear flood lamp C-4
D Switch - Refueling pump F-5
14 Switch - Reverse steering prox. B-5
C Switch - Rh. front stabilizer lockout B-8
C Switch - Rh. rear stabilizer lockout B-8
C Switch - Start aid C-9
B Switch - Starting/pilot press enable D-4
A Switch - Swing brake G-2
C Switch - Swing brake C-5
C Switch - Trans speed C-6
C Switch - Travel alarm cancel C-4
C Switch - Travel pedal lock B-6
A Switch - Travel pedal H-2
A Switch - Upper windshield E-2
C Switch - Upper wiper B-6
3 Swivel G-8
Component Location
Connector Location
Connector Number(from the
schematic)
Schematic Location(from the
schematic)
Machine Location
(black calloutson illustration
C001 D-2 1C002 C-l1 2C003 D-11 2C004 D-8 2C005 E-11 2C006 G-11 2
For Harness To Harness Connectors ¹
¹ Connectors that join a harness to a component are generally located at or near the component. See the Component Location chart.
Related Electrical Service ManualsForm Number
SENR3685
SENR6265
Starting Motor (8C-4774)
Consist No. 8C-4773 SENR3559
Consist No. 3E-1944 SENR3581
TitleAlternator (9W-3043)
Electronic Control Systems
Resistor, Sender and Solenoid SpecificationsPart No. Component Description Resistance (Ohms)¹
Resistor - Blower Motor Speed 124-0329 Overall - 6.0; Tap - 1.5 or 4.5
Resistor - Backup 122-2373 47
Sender - Engine Coolant Temp 8U-1 51660°C (140°F) - 13490°C (194°F) - 51.2100°C (212°F) - 38.5
Sender - Fuel Level 112-71 78 Empty -70.6; Full -0.4
Sender - Hydraulic Oil Temp 116-471060°C (140°F) - 13490°C (194°F) - 51.2100°C (21 2°F) -38.5
Solenoid - A/C Clutch 3E-1909 14.4 ± 0.6
Solenoid - Pump PRV 122-2379 27²
Solenoid - Engine Start/Stop 8C-3663 Start (Latch) Coil - 1.55 ± 0.15Stop (Unlatch) Coil - 10.3 ± 1.03
Solenoid - Valve 8U-6424 19¹ At room temperature. ² At operating temperature.
Off Machine Switch SpecificationPart No. Function Actuate Deactuate Contact Position5W-9934 Air Filter Vacuum 187.5 mm Hg (7.4 in Hg) NA Normally Open
5W-9972 Low Brake Oil Press 10000 kPa (1450 psi) NA Normally Open
6T-1546 Engine Oil Press 93.0 ± 20.8 kPa(13.5 ± 3.0 psi)
68.9 ± 20.8 kPa(10.0 ± 3.0 psi)
1-3 Normally Closed1-2 Normally Open
8U-2158 Brake Light Press AEC Swing Press 500 kPa (72.5 psi) NA Normally Open
8U-9306 Low Trans Clutch Press 2500 kPa (362 psi) NA Normally Open
9D-7032 Travel Press 517 ± 34.5 kPa(75.0 ± 5.0 psi)
414 ± 34.5 kPa(60.1 ± 5.0 psi) Normally Open
116-4710 High Hydraulic Oil Temp 94°C (201°F) NA Normally Open
116-8514 Hydraulic Oil Filter Press 250 kPa (36.3 psi) NA Normally Open
117-0651 AEC Implement/Travel Press 1500 kPa (218 psi) NA 1-2 Normally Closed1-3 Normally Open
118-5501 Overload Warning Press 16000 kPa (2320 psi) NA Normally Open
119-3399 Engine Coolant Temp 100°C (212°F) NA Normally Open
119-3400 Low Hydraulic Oil Temp Closes On Decreasing Temperature 11°C (52°F)
Opens On Increasing Temperature 17°C (63°F Normally Closed
NA Not Available
COMPONENT LOCATIONS
In the chart above, the creeper speed relay information should be removed.
In location E-7 on the schematic, the creeper speed relay is replaced by a jumper wireinstalled from contact 30 to contact 87a of the creeper speed relay socket. Thischange allows creeper speed to be activated in transmission speeds one and two.
Electrical Schematic Change
A 3
29
56
4
9
57
47
46
14
67
48
16 BC D
69
12 17
18
19
2021
2223
24
25
26
27
28
2530
3132
37
35
33
34
3638
7
68
39
404142
43
4445
71
70
50
49
54
51
52 53
66
55
56
1
2
59
62
72
58 61
11 60
63
12
67
10
64
8 15
13
Harness Connectors And Component Locations
1
2
A
3
6242
41
8
31
30
52 53
49
47
71
48
B
C
64
63
50
51
254
69
68
67
28
27
26
67
57
56
55
22
21
60
D58
61
72
5940
45
44
24
23
43
35
34
33
32
39
38
37
36
54
46 66 70 29
5
69161
2 17
18
19
20
7D20105T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Normally open switch that is closed due to an applied condition, and will open again with a specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.
Electrical Schematic Symbols And Definitions
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
A AA
2
A AA1
2
325-PK-14C A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows through it.
REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
SENDER - A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure. Its resistance changes to give an indication to the gauge of the temperature or pressure.
RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close the switch part of the relay.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too much current flows through it. This does not destroy the circuit breaker and it can be reset to become part of the circuit again.
SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close a valve or move a piece of metal that can do work.
Harness And Wire Electrical Schematic Symbols
SocketPin
Pin or Socket Number
Wire, Cable, or Harness Assembly Identification
Single Wire Connector
Circuit Number Identification
Wire Gauge
WireColor
Plug Receptacle
9X-1123
Component Part Number
Electrical Schematic Symbols And Definitions
11 12 2
Typical representation of a Sure-Seal connector. The plugand receptacle contain both pins and sockets.
Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches.
BK
/YL(
1)P
U(7
)
GY
/BK
(1)
GY
(7)
BK
/PU
(1)
GN
(8)
BK
/GN
(10)
BK
(12)
BU
/WH
(1)
BK
/WH
(5)
BK
-14
RADIO119-2006 5W-8937
SPEAKER
5W-8937SPEAKER
DOME LIGHT5W-2041
CIGAR LIGHTER5W-9628
UPPER WIPER122-2367
FLOOD LAMP120-6776
FLOOD-LAMP120-6776
REAR WORKLAMP AS.120-6776
LOWER WINDSHIELD122-2370
UPPER WINDSHIELD122-2369
TO CAB
YL(
2)
5W-9391ANTENNA
BEACON116-9627
BKBK/YL(1)
RDRD
BKYL(14)
YL(14)BK
BK/WH(5)
BK/WH(6)
BK
BK
BK
BU/WH(1)
RDRDPU(7)
BK
BK
GY/BK(2)
BK(12)GY(7)
GY/BK(1)
BK/PU(1)
BK/GN(10)
GN(B)
BK-14
YL(2)
BK
/RD
(1)
BK
/GN
/RD
(8)
GN
/BK
(2)
GN
(2)
BK
/GN
/RD
(1)
BK
/GN
/RD
(8)
RD
/YL(
8)G
N(1
0)
BK
/GN
/RD
(9)
GN
/BR
(2)
BK
/RD
(1)
PU (7)OR (1)BK
PU (7)CONVERTER24V-12V120-6566
START AID SW8U-6357
AEC SW5W-9372A/C SW
5W-9347
HAMMERSWITCH5W-9347
OVERLOAD WARNINGDEVICE SWITCH5W-9347
LOWERWIPER SW5W-9744
UPPERWIPER SW5W-9744
TRAVEL PEDALLOCK SWITCH8U-6357
PARKINGBRAKE SW8U-6353
SWING BRAKESWITCH8U-6353
TRANS SPEEDSWITCH125-4081
CREEPER SPEEDSWITCH8U-3560
POWERMODE SW125-4080
PILOT CONTROLLOCK SW5W-7307
BEACON SW5W-9347
TRAVEL ALARMCANCEL SW8U-6357
REAR FLOODLAMP SW5W-9347
FRONT FLOODLAMP SW5W-5867
HEADLAMP SW5W-5867
BK
(12
)G
Y (
7)
BK
/GN
(10
)G
N (
8)
BK
/PU
(1)
BU
/WH
(1)
BK
/WH
(5)
BK
/YL
(1)
YL
(2)
GY
/BK
(1)
TO FRAME
BK
GY
(2)
BK
(1)
RD
/YL(
6)B
K(6
)R
D/Y
L(1)
BK
/GN
/RD
(3) RD(5)
BK/GN/RD(3)
BK/YL(1)
BK(6)
BU/WH(1)
BK(1)
BK/WH(5)
BK/YL/WH(2)
BK
RD/YL(1)
RD/YL(6)
GY
RD/YL(30)
RD/YL(17)
GY
GY
GY
GY
GY
BU
/WH
(1)
BK
/YL(
1)
BK
BK
BK
BK
BK
BK
BK
BK/GN/RD(7)
GN/BU(5)
BK/GN(6)
BK/GN(12)
BK/GN(2)
GY
BU
/YL(
1)B
U/Y
L(2)
BR
/BK
(3)
BK
/WH
(1)
BK
/GN
/RD
(6)
BK
/GN
(3)
BK
/GN
(2)
GN
/BU
(5)
BK
/GN
(6)
BK
/GN
/RD
(2)
BK
/GN
/RD
(5)
YL(10)
RD/YL(30)
BU/YL(2)
BK
BK
BK
BK
BK/GN(3)
BK/GN(11)BK/WH(1)
OR(2)
RD/YL(32)
RD/YL(31)
BK
PU(1)
BU(3)
BR/BK(3)BK(11)
GN/BR(2)BK/RD(1)
BKGY
GY
WH(6)WH(5)
BK/WH(3)GN(8)
BK
BK(12)
WH
(5)
WH
(6)
BK/GN(7)
BK
/GN
(10)
GY
(7)
BK
(12)
GN
(8)
BU(10)GN(9)BK
RD(2)
GN(10)
RD(3)RD(2)
YL(1) YL(9)
BK
GY
GYBK
RD/YL(7) WH(1)
BK(2)RD/YL(5)
BK
RD/YL(27) BK(3)
GY
RD/YL(29)
RD/YL(28)
BKGY
GYBK
BK(4)BK(5)
BK(5)
BK(3)RD/YL(5)BK(2)RD/YL(7)
YL(
1)W
H(1
)
GY
GN(1)RD/YL(3)
BK
RD/YL(26)TO FRAME
GYBK BK
PU(8)
PU(8)
RD(21)
RD(21)BK
GY(1)GYBK
BKYL(7) YL(13)
YL(8)
YL(7)YL(13)BU(11)RD(20)BK(10)
BK
BK
BK
YL(11)YL(12)
BU(10)GN(9)BKRD(21)PU(8)
BR
SHIELD
BRGNWHSHIELD
RD
(24)
WH
(6)
BK
/GN
(7)
BK
/WH
(3)
GN
/BU
(5)
BK
/GN
(6)
BK
/YL/
WH
(2)
GY
(1)
BR
/BK
(2)
BR
/WH
(3)
RD
/YL(
3)G
N(1
)R
D/Y
L(5)
BK
(2)
RD
/YL(
7)B
K(3
)B
K(4
)B
K(5
)Y
L(1)
WH
(1)
RD
(2)
RD
(3)
BU
/YL(
1)B
U/Y
L(2)
BR
/BK
(3)
BU
(3)
PU
(1)
BK
/WH
(1)
BK
/GN
/RD
(2)
BK
/GN
(2)
BK
/GN
(3)
GY
(2)
BK
(1)
RD
/YL(
1)B
K(6
)R
D/Y
L(6)
BK
/GN
/RD
(3)
BR
/WH
(2)
GN
/WH
(1)
RD
(5)
RD
(1)
GN
/BR
(1)
BK
(7)
WH
(2)
BK
/GN
(1)
BK
(8)
OR
(3)
WH
(3)
BU
(1)
BR
/BK
(1)
RD
(4)
BR
/WH
(1)
GN
(3)
BU
(2)
RD
/YL(
2)R
D/Y
L(9)
BU
(4)
BK
/PU
(1)
GY
/BK
(1)
YL(
2)O
R(1
)B
K/R
D(1
)G
N/B
R(2
)G
N(2
)R
D/Y
L(8)
BK
/GN
/RD
(1)
GY
(1)
MAIN-POWER120-5970
CREEPERSPEED117-4861
STOP LAMP117-4861
HORN5W-5883
START/STOP117-4861
BRAKE117-4861
TRANS SPEED117-4861
TEMP.117-4861
REFUELINGPUMP SWITCH8U-3011
YL(4)BK/YL/WH(1)BK/WH(2)
GN/WH(2)GN/BU(2)
BK/PU(2)GN/WH(3)GN/BU(3)GY(3)RD/YL(10)
BK/GN(4)PU(2)BK/GN(5)RD(6)BR(1)BK(8)WH(3)GN/BU(1)GN/BU(1)
BU(1)BR/WH(3)BK/GN/RD(3)
GN/BR(2)BK/GN(3)
BK/WH(1)
GN/BR(4)GN/BR(3)BU/YL(3)GN(4)
GN/BR(3)GN/BR(4)GN(4)BU/YL(3)
WH(4)
RD/YL(11)GN/BU(4)GN/WH(4)GY(4)RD(8)RD/YL(12)
RD(7)BU/YL(4)RD(9)BU(7)GN(5)BU(5)BU(6)
WH(1)BK(4)BK(5)BK(2)BK(3)YL(1)BK(1)BR/WH(2)BR/BK(1)BR/WH(1)BR/BK(2)GN(2)GN(1)
RD(10)BU(8)WH(7)YL(5)BU(9)RD(11)GN(6)BU(10)
BK
/GN
(6)
GN
/BU
(5)
BK
/GN
(7)
BK
/WH
(3)
BK
/YL/
WH
(2)
WH
(5)
WH
(6)
WH
(1)
BK
(1)
BK
(2)
BK
(3)
BK
(4)
YL(
1)B
K(5
)B
R/W
H(1
)B
R/B
K(1
)B
R/W
H(2
)B
R/B
K(2
)G
N(1
)G
N(2
)
BU
(1)
BR
/WH
(3)
BK
/GN
/RD
(3)
GN
/BR
(2)
BK
/GN
(3)
BK
/WH
(1)
BK
(8)
WH
(3)
OR
(1)
RD
/YL(
9)R
D/Y
L(8)
RD
(4)
GY
/BK
(1)
BK
/PU
(1)
BU
/YL(
2)R
D/Y
L(5)
RD
/YL(
6)R
D/Y
L(7)
RD
/YL(
1)R
D(5
)B
K(7
)R
D(3
)R
D/Y
L(3)
YL(
2)G
Y(1
)G
N/W
H(1
)R
D/Y
L(2)
GY
(2)
RD
(2)
GN
/BR
(1)
BK
/GN
(1)
BK
/GN
/RD
(2)
BK
/GN
/RD
(1)
BR
/BK
(3)
BU
(3)
PU
(1)
BK
/RD
(1)
BK
/GN
(2)
RD
(1)
BU
(4)
GN
(3)
BU
/YL(
1)B
K(6
)W
H(2
)B
U(2
)
RD-14(1)
GN/WH(2)
GN/BU(2)
GY(2)
RD-10(6)
RD-10(4)
RD-10(3)
RD-10(1)
RD-10(8)
RD-10(7)
RD/YL(2)
GN/WH(3)
GN/WH(1)GN/WH(4)GN/BU(3)
GN/BU(4)
GY(1)
GY(3)GY(5)GY(4)GY(6)
YL(2)RD/YL(16)RD/YL(3)
RD(16)
RD(18)
OR(1)
RD(3)
BK(7)RD(19)BU-10(2)
RD(5)
RD/YL(1)
RD(10)RD/YL(14)RD/YL(7)
RD/YL(6)
RD/YL(5)
BU/YL(2)
BK/PU(1)BK/PU(2)GY/BK(1)
RD(4)RD(8)RD/YL(8)RD/YL(15)RD/YL(12)RD/YL(13)RD/YL(9)RD/YL(11)RD-12
RD/YL(10)
YL(2)RD/YL(3)RD/YL(16)RD(16)OR(1)RD(3)BK(7)BU-10(2)RD(18)RD(19)RD/YL(2)GN/WH(1)GN/WH(3)GN/WH(4)GN/BU(3)GN/BU(4)GY(1)GY(2)GY(3)GY(4)GY(5)GY(6)RD(5)RD/YL(14)RD(10)RD/YL(1)
RD/YL(5)RD/YL(6)BU/YL(2)RD/YL(7)BK/PU(1)BK/PU(2)GY/BK(1)RD(4)RD(8)RD/YL(8)RD/YL(9)RD/YL(10)RD/YL(11)RD/YL(12)RD/YL(13)RD-12RD/YL(15)
RD-12GY(5)GY(6)RD/YL(13)BU-10(2)RD(10)RD/YL(16)RD/YL(14)RD/YL(15)RD(16)RD(18)RD(19)GY(2)RD/YL(3)
RD(4)GY/BK(1)BK/PU(1)RD/YL(1)BU/YL(2)RD/YL(5)RD/YL(6)RD/YL(7)RD/YL(8)RD(5)BK(7)RD(3)RD/YL(9)YL(2)GY(1)GN/WH(1)RD/YL(2)OR(1)RD/YL(11)RD(8)GY(4)GN/WH(4)GN/BU(4)RD/YL(12)BK/PU(2)GN/WH(3)GN/BU(3)GY(3)RD/YL(10)
TO BOX
BK/GN/RD(4)
BK
WH(14)
YL(4)
WH(9)WH(2)
RD/YL(13)BK/GN(8)BK/WH(2)BK(6)
BU-10(2)BU-10(1)
RD/YL(16)BK
TO BOX
RD/YL(16)RD(10)BU-10(2)BK/WH(2)
BK/YL/WH(1)YL(4)
BKBK
BKBK
BU(2)BU(5)
BU(6)
BK
GN(6)
RD(15)
BK
BK
BKRD(14)
BU(10)BU(8)
WH(7)
BU/YL(1)BK
BKBKBU(9)
YL(5)
PU(4)RD/YL(14)
BK RD(11)
GN(3)GN(5)
BU(7)BU(4)
PU(4)
RD(9)RD(1)
RD(13)
WH(8)
RD(14)
RD(2)GN/BR(1)BK/GN(1)BK/GN/RD(2)BK/GN/RD(1)BR/BK(3)BU(3)PU(1)BK/RD(1)BK/GN(2)
BK
BK
BKBK
BK
BK/GN(1)BK/GN(4)GN/BR(1)
BK/GN/RD(2)BK/GN/RD(1)
BK/GN/RD(4)WH(8)
WH(9)
RD/YL(15)
BR(4)
BR/BK(4) BU(3)
PU(1)BK/RD(1)
BKBK
RD(13)
RD(17)RD(16)
RD(7)
BK
RD(19)BU/YL(4)
RD
(18)
RD
(6)
RD
/YL(
15)
RD
/YL(
14)
RD
(1)
BU
(4)
GN
(3)
BU
/YL(
1)B
K(6
)W
H(2
)B
U(2
)
RD
(7)
BU
/YL(
4)R
D(9
)B
U(7
)G
N(5
)
BU
(9)
YL(
5)W
H(7
)B
U(8
)B
U(1
0)G
N(6
)R
D(1
0)
BK
/GN
(2)
BK/GN(4)PU(2)BK/GN(5)RD(6)BR(1)
BK
/GN
(5)
RD(6)
BR(1)
PU(2)
RD-8(1)RD-8(2)
RD-8(1)RD-8(3)
RD-6(4)
WH(3
)B
K(8)
BK
/GN
/RD
(8)
BK(9)BKBK
RD(12)RD(26)BKBK
GY(5)
BK(9)BKRD(12)GY(5)GY(6)WH(4)
RD(12)GY(6)GY(5)WH(4)BK(9)BK
BKRD(26)GY(6)WH(4)
GY(6)
GY(9)
BK
BK
BK
BKGY(9)
GY(10)
GY(6)WH(4)RD(26)
GY(6)WH(4)RD(26)
LAMPLICENCE PLATE116-9623
WH(4)BK
GY(6)
BKBK
RD(26)
WH(4)GY(6)BKRD(26)
BU(11)RD(20)BK(10)BKYL(13)
BK
WHRDBKBR
BK (1) WH-14BK-14BK
WH-14BK-14
GY (8)BK
BKBK
BKBK
GY (4)
GY(8)
WH(4)
RD/YL (11)GN/BR (3)GN/BR (4)
GN/BU (4)GN/WH (4)
RD(7)
RD/YL(11)GN/BR(3)GN/BR(4)GN/BU(4)GN/WH(4)GY(4)
WH(4)
RD/YL(12)BU/YL(3)
BK
BKYL(1)
OVERLOAD WARNINGDEVICE SWITCH118-5501
WH(11)GN(12)
BR(3)
RD(23)
BK
BU(10)YL(5)BU(9)
RD(11)GN(6)BU(8)
RD(10)WH(7)
YL(11)GNWH
RD(21)GN(9)
YL(12)BR
SHIELD
BR(2)WH(10)
YL(11)SHIELDRD(11)
BRBU(8)
YL(12)GN(9)GN(6)BU(9)YL(5)
WHGN
RD(21)RD(10)RD(22)
WH(11)GN(12)
BR(3)
BK(14)BU(13)
BKBK
PU(9)
RD
(23)
WH(10)BR(2)
BK(13)
BK(13)
RD(22)
RD
(22)
TURN SIGNALLAMP AS.116-9626
FLOODLAMP AS.120-6775
GN/BU (1)BK/GN V
GN/BU (5)
BKGN/BRBR
BU/YL (3)
BKBU (13)
HORN SW5W-9376
SWINGBRAKE SW8U-6109
TRAVELPEDAL SW119-3405
REVERSESTER LIGHT5W-9323
TOPLATFORM
GN/BR (3)GN/BU (2)BK/YL/WH (2)
WH (3)BK/GN (4)GN/WH (2)
BU/YL (3)
GN/BU (5)BK/GN (6)GN/BU (1)BR (1)GN/BR (4)
BU (13)
BK
BK
BK
BK (8)
GY (3)GN/WH (3)GN/BU (3)
TURN SIGNALLAMP AS.116-9626
TO FRAME
BRBUBRBU
BRDK-BUGN/YLBK
LEFT FRONTSTABILIZERLOCKOUT SOL8U-6424
RIGHT FRONTSTABILIZERLOCKOUT SOL8U-6424
BK/GN (7)BK/WH (3)BK/PU (2)
LOWER WIPER6C-9156
RD(6)RD/YL(10)BK/WH(7)
BK/WH(2)
BK
BK BK
BU(1)RD/YL(10)RD(6)BU(1)
FORWARD/REVERSETRAVEL ALARMSW (QNTY 2)9D-7032
BRAKELIGHT SW8U-2158
LOW BRAKEPRESS SW5W-9972
RD(25)RD/YL(33)
RD(25)RD/YL(33)
BK
BK
TO FRAME
BRBUBRBU
BRDK-BUGN/YLBK
RIGHT REARSTABILIZERLOCKOUT SOL.8U-6424
LEFT REARSTABILIZERLOCKOUT SOL.8U-6424
BK(2)BK(3)BK(4)BK(5)BK
BK(1)BK(2)BK(3)BK(4)GN/YL
GN/YL
BRGN/YL
DK-BUBK
GN
/YL
BR
RD(12)
RD(12)
BK/GN(8)BU-10(1)
TO FRAME
TO FRAME
BKSTICK TRAVELLAMP AS.8U-4742
RD/YL(12)BU/YL(3)YL(1)
BK(1)RD/YL(11)GN/BR(3)GN/BR(4)GN/BU(4)GN/WH(4)GY(4)WH(4)RD/YL(12)BU/YL(3)YL(1)
BU(13)GN/BR(3)GN/BU(5)BK/YL/WH(2)WH(3)BK/GN(6)GN/WH(2)BU/YL(3)GN/BU(1)BK/GN(4)GN/BU(2)BR(1)GN/BR(4)BK(8)GN/BU(3)GN/WH(3)GY(3)BK/GN(7)BK/WH(3)BK/PU(2)BK/WH(2)RD/YL(10)RD(6)BU(1)RD(25)RD/YL(33)BU-10(1)BK/GN(8)BK(2)BK(3)BK(4)BK(5)
GY(5)GY(6)RD(12)RD-6(4)
BK(9)WH(4)
BU-10(1)
BK/GN(8)
BK/GN(8)BU-10(1)
BK
FUELPUMP5W-8633
RD-00 BK-00
BK-00
RD-6(4)
DISCONNECTSWITCH7N-0718
12V BATTERY(QNTY 2)3T-5760
RD(12)GY(6)GY(5)WH(4)BK(9)BK/GN(8)BU-10(1)RD-6(4)
BK
BK (18)
BK (18)
BK (14)WH (7)
BK(14)WH(7)
GN/BR(4)GN/BU(1)WH(3)BK/GN(4)GN/WH(2)BU/YL(3)GN/BU(2)BR(1)BK(8)GN/BU(3)GN/WH(3)GY(3)BK/PU(2)BK/WH(2)RD/YL(10)RD(6)BU(1)
GN/BR(3)BK(5)BK(4)BK(3)BK(2)WH(7)
BK/GN(6)GN/BU(5)BK/GN(7)BK/WH(3)BK/YL/WH(2)BU(13)BK(14)RD/YL(33)RD(25)
GN(4)
GN/BR(4)GN/BU(1)WH(3)BK/GN(4)GN/WH(2)BU/YL(3)GN/BU(2)BR(1)BK(8)GN/BU(3)GN/WH(3)GY(3)BK/PU(2)BK/WH(2)RD/YL(10)RD(6)BU(1)
GN/BR(3)
BK(2)BK(3)BK(4)BK(5)
RD(8)BU(6)
WH(1)
BU(7)RD(9)BR/BK(1)
GN(4)BU/YL(4)BR/WH(1)BU(5)GN(5)BR/BK(2)
GN(1)BR/WH(2)GN(2)
WH
(6)
WH
(5)
BK
/YL/
WH
(2)
BK
/WH
(3)
BK
/GN
(7)
GN
/BU
(5)
BK
/GN
(6)
DK-BUBK
BK(4)BK(3)BK(2)BK(1)
PU(8)BK
TO FRAME
GN/BU(6)RD(25)
BU
RD-4
BU
MOTOR118-9168
PU(3)
RD/YL(33)
RD/YL(33)
RD(8)BU(6)
PU(3)BU(6)BK
BK
BK
BK-4
TO FRAME
WASHERUPPER8U-2598
WASHERLOWER8U-2598
RD-00
RD-00
RD(24)BK(15)
WHBR
SHIELDWH(12)BK(16)YL(17)BK(17)
BKBK
WH
(5)
BK
(15)
PU
(9)
SH
IELD
BR
WH
YL(
17)
BK
(17)
WH
(12)
BK
(16)
OR(4)BK(17)
PU(6)BK(16)
SWING PUMP PRVSOLENOID122-2379
MAIN PUMP PRVSOLENOID122-2379
TO FRAME
PU(9)
PU(9)SHIELDBRWH
WHBRSHIELD
TO FRAME
BK
BK
BK
BK
GN/BR(2)BK/GN(3)
BK/GN/RD(3)
BK/YL/WH(1)
GN/BR(2)BK/GN(3)
BK/GN/RD(3)BK/YL/WH(1)
IMPLEMENTACTIVATIONSOLENOID8U-6424
TRAVELACTIVATIONSOLENOID8U-6424
SWINGBRAKESOLENOID8U-6424
CREEPERSPEEDSOLENOID8U-6424
TO FRAME
PU(2)GN/BU(1)BR/WH(3)BK/GN(5)BK/WH(1)YL
YL(4)BR/WH(3)
GN/BU(1)
PU(2)
PARKINGBRAKESOLENOID8U-6424
TRANSMISSIONSPEEDSOLENOID8U-6424
BK BK
BKBKBK
LOW TRANSMISSIONCLUTCH PRESS SW8U-9306
PU(2)GN/BU(1)BR/WH(3)BK/GN(5)BK/WH(1)YL(4)
GN/BR(2)BK/GN(3)
BK/GN/RD(3)BK/YL/WH(1)
AEC SWINGSWITCH8U-2158
HEAVY LIFTSOLENOID8U-6424
RD(24)BK(15)
HAMMERSOLENOID8U-6424
BKWH(1)
BK
BK
BKBK
BK BK
BK
HYD OILFILTERCLOG SW116-8514
PU(11)
PU(11)
PU(8)
BU(7)
RD(9)BR/BK(1)
BR/BK(1)
GN(1)BR/WH(2)GN(2)BR/WH(2)
AIR FILTERCLOG SW5W-9934
RD(7)
FORWARDHORN6C-5859
BK(1)
RD (7)BK
BK
HORN5W-9400
TO FRAME
TO ENGINE
BK-00
BK-4
BK
-00
BR/BK(5)
BK
BR
/BK
(2)
BU
(5)
GN(5)
BR/WH(1)BK
GN(4)BU/YL(4)BR/WH(1)BU(5)GN(5)BR/BK(2)
GN(2)BK
RD-4(4)
RD-4(4)
RD-6(2)
RD-4(1)
RD
-6(3
)R
D-4
(1)
COOLANT TEMPSWITCH119-3399
COOLANT TEMPSENDER8U-1516
ALTERNATOR9W-3043
RD
-6(2
)
BR/BK(5)BK
BK
BK
START
BK
-8
GN-8
BK
BKBK-8GN-8
BU(14)
GN/BU(6) (6)
> >
RD(25)
RD
-4
BK-10
TO BOX BK-6 BK-6
TO FRAME
BK-6
BK
-6
0
TO CAB TO FRAME
YL(15)YL(16)YL(13)
RD-12
RD-12
GN(4)BK
GN(4)YL(16)
YL(13)YL(15)YL(16)
YL(15)
YL(13)
RD-12
BK-12
BK-12BR-12
L1
L2
L2
L1
L3
L3
L1
L4
L1 L4
L5
L5
L4
L1
L6
L7
L7
L8
L8
L9L9
L10
L10
L11
L12
L12
L11
L10
L4
L1
BKBK
-12
BK
BK
L15
L14
L14
L15
L26
21
L17
L16
L13
L13
L24
L46
L45
L13
L16
L17L43
L44
L40
L46
L6L18
L19
L20
L21
L22
L19
L18
L37
L38
L39
L41
L40
L42
L42
L36
L33
L33
L24
L23
L6
L22
L19
L23
L6
L25
L28
L29
L30
L31
L32
L26
L27
L18
L82
L20
L21
L25
L31
L31
L30
L29
L28
L27
L34
L36
L37
L65
L66
L66
L67
L67
L56
L65
L57
L55
L45
L86
L41
L40
L47
L53
L54
L56
L57
L58
L59
L60
L61
L48 L49
L62
L63 L64
L64
L63
L62
L61
L54
L60
L59
L52
L50
L49
L48L46
L44
L50
L38
L39
L51
L50
L87
L43
L38
L39
L43L47
L32
L51
L32
L34 L30
L51L36
L48
L29
L30
L36
L51
L46
L50
L49
L44
L52
L52
L46
L34
L28
L27
L34
L34L28
L28
L59
L58
L53
L68
L55
L67L55
L67
L60
L54
L70
L61
L70
L64
L63
L62
L70
L68L63
L68
L68 L68
L71
L72
L73
L74L73
L72
L64
L75
L75
AIR SUSPENDEDDRIVER SEAT
AEC IMPLEMENTTRAVEL SWITCH117-0651
GY
BK
TO UNDCRG
GY
TO FRAME
GY
GNWH
BRBU
BLADE REARSOLENOID8U-6424
BRBU
BLADE FRONTSOLENOID8U-6424
PU(3)
PU(3)
PU
(3)
WH(6)WH(5)
BK/YL/WH(2)BK/WH(3)BK/GN(7)GN/BU(5)BK/GN(6)
BK/GN(6)GN/BU(5)
WH(6)WH(5)
BK/YL/WH(2)BK/GN(7)BK/WH(3)
L76
L76
OR
(2)
HEATER FAN122-2372
122-2373RESISTOR
BK/YL/WH(1)
WH(14)
GN(13)BK
L77
L77
L77
L78
BRAKE/TRAVELCUTOFF117-4861
BK
BK
GN(13)
GN(13)
L78
L48
BK
BU(13)
BKWH
BKWH
BK/RD(2)
BR/BK(3)
L
L
L A
A
C C
A
W
C
C
C C
G
G
GC
C
D
D
D D
G
V
V
V
G
G
L
L
D
D
D
CC
L
L
D
D
D
D
U
U
D
D
D
N
D
DD
D
G
G
G
G
G
G
G
D A
F
E
C A
C
C
W D
W
W
XX
P A
RR
TW
A N
SWIVEL121-2974
D
BB
AA Y
Y
Z
C
C
C
CW
G
C
K
C
C
BB
Z AA
H
C
C
C
D
D M
D
D
D
D
D
D
BV
V<<
H
H
H
H
H
H
HH
H
J
J
BR
BU
J
B
B
B
H
B
B
A
A
A
A
A
A
A F
A
F
A
F
A
F
A
A
A
A
A
A
A
A
A
A
A
L46
L44
L50
L48
A A
A A
F
A
A
B
B
E
B
E
B
B
B
B B
B B
B
B
B
B
B
B
B
B
E
B
B
B
B
B
B
B
B
B
B
CC
DD
YL(9)
YL(9)
GN(10)
SUPPL STER
AUX HYD(CW ROTATION)SOLENOID8U-6424
AUX HYD(CCW ROTATION)SOLENOID8U-6424
FUEL LEVELSENDER112-7178
PU(8)
PU(8)
A1A2A3A4A5A6A7
A7A6A5A4A3A2A1
POWERMODE117-4861
PILOT PRESSENABLE117-4861
HEAVYLIFT SW5W-9347
LEFT REARSTABILIZERLOCKOUT SW5W-9347
RIGHT REARSTABILIZERLOCKOUT SW5W-9347
LEFT FRONTSTABILIZERLOCKOUT SW5W-9347
RIGHT FRONTSTABILIZERLOCKOUT SW5W-9347
AUX HYD(CW ROTATION)SWITCH
AUX HYD(CCW ROTATION)SWITCH122-1903
Y
Z
OR(3)
OR(3)
OR(3)
OR
(3)
BR/RD
BR
BR
BR/RD
BK-14
BU/YL(5)
BK/WH(4)
BK
BK
GN
/WH
(1)
BK
/GN
(9)
GN
/BR
(5)
YL(
11)
YL(
12)
WH
(2)
BU
(4)
RD
/YL(
18)
BU
/YL(
5)B
K/G
N(1
1)G
N(3
)Y
L(10
)B
K/W
H(4
)
BK
BR
/WH
(1)
BU
(2)
RD
(1)
RD
(4)
PU
(3)
BR
/BK
(1)
BR
/WH
(2)
RD
/YL(
9)B
U(1
)Y
L(9)O
R(3
)B
R/B
K(2
)B
R/W
H(3
)
SH
IELD
BR
GN
WH
YL(11)YL(12)
BKBK
YL(11)YL(12)BK
GN/BR(5)RD/YL(18)BK/GN(9)BK
YL(10)BU/YL(5)BK/WH(4)BK/GN(11)
GN/WH(1)WH(2)BU(4)
GN(3)BR/WH(1)BU(2)RD(1)
GN
/BR
(1)
BK
(7)
WH
(3)
BK
/GN
(1)
BK
(8)
RD
(1)
BU
(2)
BR
/WH
(1)
GN
(3)
RD
/YL(
2)B
U(4
)W
H(2
)G
N/W
H(1
)O
R(3
)B
U(1
)R
D/Y
L(9)
BR
/WH
(2)
BR
/BK
(1)
PU
(3)
RD
(4)
YL(
9)
BK
TO FRAME
GYBR/BK(2)BR/WH(3)
YL(11)YL(12)
PU
(3)
BK/RD(2)
L80
L80
L80 L80
L80
L79
L79
L79
L80
L81
L81
L81L81
L55L69
L69L69
L35
L35
RD(27)
PU(5)DIODE8U-8045
RD
(27)
RD(27)
BACKUP SW8U-6353
PU(6)OR(4)
GN(7)WH(12)BU(15)
GN(7)WH(12)BU(15)YL(17)
BK
BU(15)GN(7)
GN(7)BU(15)
PU(6)WH(12)OR(4)YL(17)
BU(15)GN(7)
OR(4)PU(6)YL(17)WH(12)
BK
(17)
BK
(16)
L82
L83
L83
L84
L84
L83
L85
L85
RD(28)
RD(28)RD(29)
BU(15)GN(7)
BACKUP RESISTORMAIN PUMP PRV124-0329 BACKUP RESISTOR
SWING PUMP PRV124-0329
RD-8(3)
RD-10(2)
KL.30
BK
(9)
WH
(4)
L33
RD-10(5)
RD
-8(2
)
RD-10(4)RD-10(3)RD-10(8)RD-10(7)
KL.15
RD-00
RD-00
OR(6)OR(5)OR(5)
GY
GY
BK
F
F F
F
E
B
E
EG
PU(12)
PU(12)
PU(12)
L86
BK/GN(3)GN/BR(2)
PU(12) PU(12)
L87
GN/BR(6)BK/GN(14)
PU(12)
BK
OR
(5)
BK
AEC AUX-HYD
BRAKE
AECAUX-HYD117-4861
L86PU(12)
TRAVELALARM3T-1815
BKBK
< 1 << 2 <
PRIMARYSTEERINGFLOW SW9X-0008
2 6
3
910
2.5A
ANTENNAANTENNA SPEAKER
GROUND
+BATT.
SPEAKERSPEAKERSPEAKER
MOTOR
H
G
53 31B
53A
31
T
COOLANT TEMPSWITCH8C-3569
ENGINESTART/STOPSOLENOID8C-3663
T
MOTOR
MOTOR
T
POS NEG
NC
NO
C
5 7
910
1
5 7
26
1
8
3 7
2
10 9
4
1
8
+BATTERY ALARM PRESS.SW SHUTDN.SW GROUND
RELAY122-2371
BKBKBKBKBK
POS NEG
BKBK
ETHER STARTSOLENOID122-2377
+
D+
D-
W
MOTOR
3 7
2
10 9
4
1
8
5 7
910
1
5 7
910
1
1 5
910
3 7
2
10 9
4
1
8
1 5
910
1 5
910
1 5
910
1 5
910
1 5
910
1 5
910
MOTOR
GROUND
+BATTERYTRAVEL SOL
PARK SW
PARK LIGHT
1
3
2
6
4
5
TRAVELCUTOFFRELAY8U-7440
2
6
4
5
1
378
NCNC
NC
OUT (LAMP)
+ BATTERY
GROUND
49aC249
C
31
8U-9152
56B56A
58
31
HEADLAMP AS.2U-4800
POSITIONLAMP5W-2033
MOTOR
MTR BAT
G S
STARTER8C-4774
< 6< 8< 2< 3< 5
< 1< 7
<<<<<
<<
HAZARD SW5W-9351
10
RD/YL(2)BK(7)WH(3)
BK(8)
GN/BR(1)
BK/GN(9)
GYGY
BK/GN(1)
GN/BR(5)
7,5A
7,5A
7,5A
7,5A
15A
7,5A
6
5
4
3
2
1
7,5A
7,5A
8
7
FUSE BLOCK 111-2480D RED
15A
7,5A
7,5A
15A
7,5A
25A
6
5
4
3
2
1
7,5A
15A
8
7
FUSE BLOCK 111-2478B YELLOW
7,5A
7,5A
7,5A
7,5A
7,5A
7,5A
6
5
4
3
2
1
7,5A
7,5A
8
7
FUSE BLOCK 111-2477A BLACK
7,5A
7,5A
15A
7,5A
7,5A
6
5
4
3
2
1
7,5A
7,5A
8
7
FUSE BLOCK 111-2479C GREEN
A3B3B4B5
B1C1
HEATER FAN SW111-3805
2 6
3
910
5 7
910
15
4
910
27
5
4
910
27
1 5
910
8586
30
87
87a
8586
30
87
87a
8586
30
87
87a
8586
30
87
87a
8586
30
87
87a
8586
30
87
87a
8586
30
87
87a
<< 30<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
< 10< 21< 27< 12< 11< 33< 36< 25< 24< 23< 05< 39< 40< 16< 28< 29< 06< 34< 14< 15< 02< 09< 19< 20< 01< 26< 04< 08< 18< 31< 32< 38< 13< 35< 37< 22< 17< 07< 03
<< 04<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
< 05< 21< 38< 27< 01< 40< 03< 06< 07< 08< 23< 30< 32< 33< 34< 02< 13< 24< 25< 26< 14< 22< 36< 37< 35< 31< 39< 29< 28< 20< 19< 10< 09< 18< 17< 16< 15< 12< 11
<<
09
<<
10
<<
03
<<
02
<<
11
<<
07
<<
12
<<
01
<<
08
<<
06
<<
04
<<
05
<<
11
< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
< 0
5<
06
< 0
7<
08
< 1
0<
09
< 1
4<
12
< 1
6<
18
< 1
5<
17
< 5
6<
13
< 0
1<
20
< 4
9<
69
< 7
0<
48
< 5
7<
65
< 6
6<
67
< 6
8<
46
< 4
7<
53
< 5
4<
30
< 6
0<
43
< 4
4<
52
< 0
2<
39
< 6
2<
40
< 4
1<
42
< 3
3<
58
< 3
6<
31
< 3
8<
55
< 3
4<
50
< 3
7<
35
< 2
7<
29
< 0
4<
26
< 2
4<
22
< 2
1<
23
< 5
9<
45
< 0
3<
51
< 6
4<
63
< 6
1<
28
< 3
2<
19
< 2
5
<< 09<< 10<< 01<< 02<< 03<< 04<< 05<< 06<< 07<< 08
<< 12<< 11
<< 07<< 12<< 10<< 11<< 06<< 01<< 02<< 05<< 08<< 09<< 04<< 03
CONTROL-ENG/PUMP 116-4404
40 DATA LINK (TXD)42 DATA LINK (RXD)12
MODE III INDICATOR (-)07SERVICE TOOL (-)
16 ENG SPEED DIAL SIG SHIELD19 TEMPERATURE22 ENG SPEED DIAL REF SIG32 TRAVEL LOCK SOLENOID (+)33 MODE III INDICATOR (+)35 TRAVEL LOCK37 BRAKE PEDAL38 POWER MODE II39 POWER MODE I44 ENG SPEED DIAL REF SIG45 ENG SPEED DIAL SIG51 HEAVY LIFT02 + BATTERY - SWITCHED01 + BATTERY - SWITCHED-- NC-- NC-- NC10 GOV POS SIGNAL REF (-)34 REQUESTED GOV POS46 ACTUAL GOVERNOR POS.-- NC08 TRAVEL LOCK SOLENOID (-)36 TRAVEL PEDAL-- NC03 GROUND04 GROUND50 AUTO ENG CONTROL (AEC)30 HEAVY LIFT SOLENOID (+)0953 ENGINE SPEED18 ENGINE SPEED17 ENG SPEED SENSOR SIG. SHIELD29 SWING PRV SOLENOID (+)06 SWING PRV SOLENOID (-)28 MAIN PRV SOLENOID (+)05 MAIN PRV SOLENOID (-)
>
<
>+
<-
PLUG120-5967
24V12V
GND
5 7
1
910
BRAKE LIGHTCUTOFF SW
STARTING/PILOT PRESSENABLE SWITCH117-3187
<<
01
<<
02
<<
03
1 5
910
1 5
910
5 7
2
910
6
1
8
15
50A
30
KEY SWITCH117-9507
8586
30
87
87a
+ -
HOUR METER120-5966
TURN LAMP GP116-9624
TURN LAMP5W-2040
BASIC LAMP GP116-9625
STOP LAMP9X-4493
TAIL LAMP5W-2040
TURN LAMP GP116-9624
TURN LAMP5W-2040
BASIC LAMP GP116-9625
STOP LAMP9X-4493
TAIL LAMP5W-2040
CONTROL-ENGINE 119-5856
16 SOLENOID17 SOLENOID01 POS INDICATOR OUT13 POS INDICATOR IN19 POS INDICATOR GND20 NC03 NC07 NC10 NC11 NC04 UNUSED12 UNUSED22 UNUSED14 NC23 NC21 UNUSED06 GOV POS SIG REF (-)05 REQUESTED GOV POS24 ACTUAL GOV POS09 + BATTERY15 OUTPUT STAGE18 SWITCHING INPUT02 GND08 GND
01SOLENOID02SOLENOID
01POS IND OUT02POS IND IN03POS IND GND
RDBRBK
>
01020304
WH(13)PU(10)
YLBRWH
SHIELDSHIELD
>
<< 01<< 02<< 03<< 04<< 05<< 06
<< 04<< 03<< 02<< 01
><
>+<-
PLUG120-5967
56B56A
58
31
HEADLAMP AS.2U-4800
POSITIONLAMP5W-2033
><
> 1< 2
PDT
2 24V3 GND7 TXD6 RXD
RDBRGNBU
MOTOR
H
G
53 31B
53A
31
<< 04<< 03<< 02<< 01
<< 01<< 02<< 03<< 04<< 05<< 06
4321
TERMINAL5W-3624
TRAVEL LOCKMAGNET116-1146
MOTOR
BKBK
ENGINE SPEEDSENSOR6V-2455
< 1 << 2 <
STER SWMOT RELAYBATTERYLAMPALTERNATORGROUND
SUPPLEMENTALSTEERING CONTROL122-2378
< 1 << 1 << 1 <
BUBKRD
ENGINEOIL SW6T-1546
BKBK
RELAY3E-0075
T
< 1 << 2 <
BKBK
RELAY3E-0075
T < 1 << 2 <
A/C TEMPREGULATOR122-2374
MOTOR BK-12
BR-12
AIRCONDITIONERFAN122-2375
GN-14GN-14
A/C CLUTCHSOLENOID3E-1909
BK
BK/YL
A/C PRESSSWITCH122-2376
+ VSIGNALGROUND
< 1 << 2 << 3 <
BRBKBU
REVERSE STEERPROX. SW121-0797
<< 04<< 03<< 02<< 01
<< 02<< 01<< 04<< 03
<< 02<< 01<< 04<< 03
T
HYD OILLOW-TEMPSWITCH119-3400
8586
30
87
87a
HORN/TURNHIGH BEAM SW111-1975
GN/BRYLWH/BKBK/WHBK/GNBK/WH/GNWHBR
56B71A
56
R
L54
56AH
<< 01<< 08<< 06<< 05<< 04<< 03<< 07<< 02
<< 01<< 02
T
T
HYD OILHIGH TEMPSW & SENDER116-4710
1G
ND
23T
UR
N S
IGN
AL
4T
UR
N S
IGN
AL
5P
OW
ER
MO
DE
III
6P
OW
ER
MO
DE
III
7PA
RK
ING
BR
AK
E
1H
YD
OIL
HIG
H T
EM
P
2+
24
VO
LT
3P
OW
ER
MO
DE
II
4T
RA
NS
SP
EE
D II
5EN
G C
OO
L H
IGH
TEM
P
6P
OW
ER
MO
DE
I
7T
RA
NS
SP
EE
D I
1G
ND
2N
C
3N
C
4E
NG
INE
OIL
PR
ES
S
5A
LTE
RN
ATO
R
6N
C (
+ 2
4 V
OLT
)
7H
YD
OIL
LO
W T
EM
P
12345671234567
SU
PP
L S
TE
ER
ING
SU
PP
L S
TE
ER
ING
HY
D F
ILT
ER
AIR
FIL
TE
R+
24
VO
LTB
RA
KE
LO
W P
RE
SS
OV
ER
LOA
D
HY
D O
IL T
EM
PC
OO
L T
EM
PF
UE
L LE
VE
LN
C
HIG
H B
EA
M
ABC
DE
MONITORPANEL122-6774
1 3
2< A << B << C <
WH
GNBR
ENGINESPEED DIAL124-3424
5
3
2
1
DIODETEMP123-3998
1234
DIODE STOP LAMP& CREEPER SPEED123-5635
5
A/CRELAY123-65278685
30
87
87b
<< 02<< 06<< 01<< 05<< 03<< 04
70A
BREAKER CKT.123-8838
60A
BREAKER CKT.124-0016
5 7
2
910
6
1
8
8586
30
87
87a
5321
DIODE
120-5969
5321DIODE
120-5969
GN/BR(6)BK/GN(14)
124-8427
910
GY
GYBK
FLASHER/WARNINGLIGHT
< 2 << 1 <
< 1 << 2 <
GOV ACTR 112-7593
< 2 << 1 <
< A << B << C << D <
< 2 <
< 1<< 2<< 5<< 3<< 6<< 4<
< 1 << 3 << 2 <
< 1 << 2 <
< 1 << 2 <
< 1 <
> 1 >> 2 >> 3 >> 4 >
TRAVEL ALARM
G
HH
G
F
E
D
C
B
A
DASHED LINES INDICATE ATTACHMENT COMPONENTS,WIRES AND CONNECTORS.
WIRES THAT HAVE BATTERY VOLTAGE WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGEWHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
TEMPERATURE MODE CIRCUIT.
MONITOR PANEL CIRCUIT.
PANEL LAMP CIRCUIT.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CIRCUIT.
TURN SIGNAL CIRCUIT.
WIRES THAT HAVE BATTERY VOLTAGE WHEN THE KEY SWITCH IS ON AND THE LEFT HAND HYDRAULIC CONSOLE IS LATCHED IN THE DOWN POSITION.
START AID CIRCUIT.
ENGINE AND PUMP CONTROL CIRCUIT.
A
B
C
D
E
F
14 13 12 11 10 9 8 7 6 5 4 3 2 1
14 13 12 11 10 9 8 7 6 5 4 3 2 1
ON
OFF
OFF
ON
BU
(3)
PU
(1)
CLOSESWHEN BRAKESARE APPLIED
SHOWN WITHCONSOLE INUP POSITION
OFF
ON
HEAVY LIFT SOLENOID (-)
NOTE A
PU(3)RD(8)BU(6)
SUPPLEMENTAL STEERING
NOTE A L47
MODE I
SHOWN WITHOSCILLATING AXLELEVER IN BRAKEOFF POSITIONS
THIS SCHEMATIC IS FOR THE M318 EXCAVATOR, (111-1840 CHG 01).
COMPONENTS ARE SHOWN INSTALLED ON A FULLYOPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.
NOTE A: SWITCH SHOWN WITH NO HYDRAULIC DEMAND.
NOTE: ALL CONSOLE SWITCHES ARE SHOWN WITH THE FRONTOF THE SWITCH DEPRESSED, AS SEEN FROM THE OPERATORS SEAT.
SWITCH MUST BE CLOSED FOR TRAVEL
1
2
C002
C003
C004
C006
C005
< E < SHIELDBK-16
TO CAB
BK-16
BK-14
BK-10 SHIELD
1 PARKING LIGHTS RHS2 PARKING LIGHTS LHS3 INSTRUMENT LIGHTING4 LOW BEAM RHS5 LOW BEAM LHS6 HIGH BEAM RHS7 HIGH BEAM LHS8 CONTROL LIGHTS; TURN SIGNAL
7.57.57.57.57.57.57.57.5
1 BACKUP2 POWER MODE SELECTION3 INDIVIDUAL STABILIZERS4 WORKING LIGHTS5 HAMMER BLOW FREQUENCY ADJUSTMENT6 ELECTRONICS7 ROTATING BEACON8 AIR SUSPENDED DRIVER SEAT
7.57.57.5157.57.57.57.5
1 ELECTRICAL FUEL LIFT PUMP2 WARNING LIGHT; START/STOP SOLENOID3 STARTER KEY SWITCH; MAIN POWER-RELAY; LIGHT4 CONVERTER 24 TO 12V (RADIO)5 START/STOP RELAY6 COMPRESSOR AIR HORN7 FAN; ETHER START8 CIGARETTE LIGHTER; PLUG; DOME LIGHT
257.5157.57.515157.5
FUSE BLOCK "A" BLACK FUSE BLOCK "C" GREEN1 STOP LIGHT2 AIR CONDITION3 HORN; BUZZER (OVERLOAD); 1/3 PRESSURE DROP4 BLUE LIGHT (REVERST STEERING); TRAVEL ALARM5 START/PILOT PRESS ENABLE SW; SWING GEAR; MISCELLANEOUS FUNCTION; RELAY TRAVEL CUT OFF; PARK BRAKE TRANSMISSION SPEED; CREEPER SPEED6 SUPPLEMENTAL STEERING7 UPPER WINDSHIELD WIPER AND PUMP8 LOWER WINDSHIELD WIPER AND PUMP
7.5157.57.515
7.57.57.5
FUSE BLOCK "D" REDFUSE BLOCK "B" YELLOW
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
122-1903
<<
<<
<<
<<
BK
RD
C001
MM*270501610642.51.51
AWG00046810121416
COLORBLACKBROWNBLUEGREENGRAYORANGEPINKPURPLEREDWHITEYELLOW
ABBREVBKBRBUGNGYORPKPURDWHYL
PART-NO.120-5712117-0949120-6924121-0874120-6922120-6923120-6921122-2359120-6920125-6566199-8301120-6919121-0875121-0876121-0877121-0879122-2360122-2362122-2363122-2364121-2973121-2972122-2365122-2366122-23828X-9618123-6475
IDENTABCDEFGHJKLMNPRTUVWXYZAABBCCDDEE
LOCD-11D-11F-12D-12C-12C-12C-12D-3D-4C-7H-15D-2H-14H-13H-13H-14C-16D-15H-15H-14G-10G-2G-2H-10C-15H-2C-7
BLADE, SPADE, RINGOR SCREW TERMINAL
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ELECTRICAL CONNECTIONTO VEHICLE STRUCTURE
INTERNAL ELECTRICALCONNECTION TO SURFACEOF COMPONENTCONNECTOR
ATCH WIRE, CABLE.COMPONENT
CIRCUIT GROUPINGDESIGNATION
< <
+
L#
CIRCUIT IDENTIFICATION LEGEND
SERVICE CONNECTOR
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
