315B L FOREST MACHINE MAIN ELECTRICAL SCHEMATIC

Connectors
Connector
No. And
Machine
Location
Harness And/Or Components
Schematic
Location
Connectors
Connector
No. And
Machine
Location
Harness And/Or Components
Schematic
Location
CONN 1 A - 153-2516
Controller
A-4 9 Contacts
CONN 32 G - 150-6957
Switch Panel
E-3
CONN 2 A - 153-2516
Controller
C-4
CONN 4 A - 153-2516
A - 153-2516
B-5
CONN 41 H - 150-6948
A/C Switch Panel
J-2
CONN 6 A - 153-2516
E - 128-7337
B-6
CONN 42 H - 150-6948
A/C Unit
H-6
CONN 10 E - 128-7337
Radio
B-6
CONN 3 A - 153-2516
A - 153-2516
C-5
CONN 18 A - 153-2516
G - 150-6957
E-5
CONN 9 A - 153-2516
D - 128-7336
C-5
CONN 20 A - 153-2516
G - 150-6957
E-5
CONN 17 A - 153-2516
G - 150-6957
F-5
CONN 38 A - 153-2516
H - 150-6948
H-3
CONN 19 A - 153-2516
G - 150-6957
E-5
CONN 39 H - 150-6948
Radio
J-3
CONN 35 A - 153-2516
H - 150-6948
H-5
CONN 68 C - 153-2518
Heater Control Unit
J-8
CONN 37 A - 153-2516
H - 150-6948
H-4 7 Contacts
CONN 15 D - 128-7336
Monitor
F-2
CONN 45 A - 153-2516
F - 150-6952
F-6
CONN 5 A - 153-2516
A - 153-2516
B-5
CONN 47 A - 153-2516
F - 150-6952
E-6
CONN 7 A - 153-2516
E - 128-7337
C-6
CONN 48 A - 153-2516
F - 150-6952
E-6
CONN 13 E - 128-7337
Wiper Motor
B-5
CONN 50 A - 153-2516
F - 150-6952
E-6
CONN 31 G - 150-6957
Engine Speed Dial
E-3
CONN 53 F - 150-6952
B - 153-2517
D-7
CONN 36 A - 153-2516
H - 150-6948
H-4
CONN 55 F - 150-6952
B - 153-2517
D-8
CONN 43 A - 153-2516
A/C Unit
H-6
CONN 58 B - 153-2517
C - 153-2518
G-7
CONN 46 A - 153-2516
F - 150-6952
F-6
CONN 60 F - 150-6952
C - 153-2518
G-8
CONN 54 B - 153-2517
F - 150-6952
D-8
CONN 61 F - 150-6952
C - 153-2518
G-8
CONN 59 F - 150-6952
C - 153-2518
G-8
CONN 65 A - 153-2516
F - 150-6952
D-6
CONN 82 F - 150-6952
Governor Actuator
E-9
9 Contacts
CONN 14 D - 128-7336
Wiper Control
E-2
CONN 83 C - 153-2518
Start Cont Relay
J-8
Harness Connector Location Chart
40 Contacts
21 Contacts
12 Contacts
8 Contacts
6 Contacts
Connectors
Connector
No. And
Machine
Location
Harness And/Or Components
Schematic
Location
Connectors
Connector
No. And
Machine
Location
Harness And/Or Components
Schematic
Location
6 Contacts
CONN 94 F - 150-6952
M - 153-2455
D-8
CONN 51 A - 153-2516
Hydraulic Lock Solenoid
G-2
5 Contacts
CONN 49 C - 153-2518
H-9
CONN 56 F - 150-6952
D-8
CONN 8 A - 153-2516
D - 128-7336
C-5
CONN 62 C - 153-2518
Timer Relay
J-7
CONN 21 B - 153-2517
Grapple Valve
C-3
CONN 64 C - 153-2518
Start Relay
H-7
CONN 30 A - 153-2516
H - 150-6948
H-4
CONN 67 C - 153-2518
Diode
H-7
CONN 63 C - 153-2518
Timer Relay
J-7
CONN 69 B - 153-2517
Travel Alarm
D-9
CONN 70 F - 150-6952
M - 153-2455
D-8
CONN 72 L - 134-8520
Cab Lamp
G-1
CONN 99 C - 153-2518
Engine Shutdown Timer
H-7
CONN 73 F - 150-6952
Refrigerant Low Press Switch
E-9
CONN 25 B - 153-2517
Hydraulic Oil Filter Indicator
B-7
CONN 74 L - 134-8520
Cab Lamp
H-1
CONN 52 H - 150-6948
Neutral Start Switch
H-2
CONN 76 B - 153-2517
Swing Brake Solenoid
A-3
CONN 71 F - 150-6952
Coolant Level Switch
E-9
CONN 79 B - 153-2517
Boom Raise Press Switch
C-7
CONN 85 A -153-2516
A - 153-2516
C-5
CONN 80 B - 153-2517
Implement Swing Press Switch
C-7
CONN 90 6 - 153-2517
Pump Discharge Press Sensor
A-7
CONN 81 B - 153-2517
Travel Press Switch
C-7
CONN 16 D - 128-7336
Sun Load Sensor
F-2
CONN 84 B - 153-2517
Speed Sensor
B-8
CONN 22 F - 150-6952
Washer Motor
D-6
CONN 86 B - 153-2517
A/C Clutch Solenoid
B-8
CONN 26 B - 153-2517
Proportional Reducing Valve
A-7
CONN 87 B - 153-2517
AIH Coolant Temp Sensor
C-9
CONN 27 B - 153-2517
Chassis Lamp
B-2
CONN 88 B - 153-2517
J - 134-3298
C-2
CONN 28 B - 153-2517
Chassis Lamp
B-2
CONN 89 B - 153-2517
Engine Oil Level Switch
A-9
CONN 29 A - 153-2516
F - 150-6952
F-6
CONN 91 B - 153-2517
Level Finish Solenoid
A-7
CONN 34 A - 153-2516
H - 150-6948
H-5
CONN 92 B - 153-2517
Travel Speed Solenoid
A-7
CONN 44 A - 153-2516
A/C Unit
H-6
CONN 93 B - 153-2517
Trenching Solenoid
A-7
Harness Connector Location Chart
4 Contacts
3 Contacts
2 Contacts
2 Contacts
Connectors
Connector
No. And
Machine
Location
Harness And/Or
Components
Schematic
Location
Connectors
Connector
No. And
Machine
Location
Harness And/Or Components
Schematic
Location
CONN 95 B - 153-2517
Rotate Valve
A-7
CONN 11 H - 150-6948
Rotate Switch (cw)
H-2
CONN 96 B - 153-2517
Hydraulic Oil Level Switch
B-7
CONN 12 H - 150-6948
Grapple Switch (open)
H-2
CONN 97 B - 153-2517
Rotate Valve
A-7
CONN 23 G - 150-6957
Grapple Switch (close)
F-3
CONN 98 B - 153-2517
Fuel Level Sensor
A-2
CONN 24 G - 150-6957
Rotate Switch (ccw)
F-3
CONN 100 C - 153-2518
Diode
H-7
CONN 57 B - 153-2517
Engine Oil Press Switch
B-8
CONN 101 L - 134-8520
Cab Lamp
G-1
CONN 66 F - 150-6952
Air Cleaner Switch
E-8
CONN 102 L - 134-8520
Cab Lamp
G-1
CONN 75 H - 150-6948
Horn Switch
H-2
CONN 33 A - 153-2516
H - 150-6948
H-5
CONN 77 G - 150-6957
Low Idle Switch
F-3
CONN 40 A - 153-2516
F - 150-6952
F-6
CONN 78 D - 128-7336
Cigar Lighter
E-2
Harness Connector Location Chart
2 Contacts
1 Contact
Bullet
Terminal
Machine
Location
Components
Schematic
Location
Machine
Location
Components
Schematic
Location
27D Actuator - Governor E-9 2C Radio J-3
1C A/C Switch Panel J-2 33 Radio - 12VDC C-6
3 Alarm - Travel D-9 2D Relay - Boom Lamp J-9
4 Alternator C-8 3D Relay - Chassis/Cab Lamp J-9
8A Antenna A-6 21D Relay - Chassis/Cab Lamp 2 J-9
6 Battery F-9 22D Relay - Chassis/Cab Lamp 3 J-9
13D Block-Terminal G-7 20D Relay - Fan J-7
11D Breaker 1 G-9 25D Relay - Grapple (close) E-9
17D Breaker 2 H-9 26D Relay - Grapple (open) D-9
16D Breaker 3 H-9 9D Relay - Heater H-7
19D Breaker - Bat H-9 1D Relay - Horn J-9
7 Controller C-4 4D Relay - Hydraulic Lock Solenoid J-9
8 Converter B-6 6D Relay - Main H-7
3B Dial - Engine Speed E-3 7D Relay - Neutral Start J-7
4C Fuse - Block J-4, 5, 6 23D Relay - Rotate (ccw) E-9
2 Glow Plug B-9 24D Relay - Rotate (cw) D-9
10 Horn C-2 14D Relay - Start Cont J-7
2E Indicator - Hydraulic Oil Filter B-7 15D Relay - Starter H-7
11 Lamp - Boom C-1 8D Relay - Timer J-7
12 Lamp - Cab H-1,G-1 10D Resistor - Backup H-9
13 Lamp - Chassis B-2 5 Sender - Engine Coolant Temp C-8
9A Lamp - Dome B-5 3E Sender - Hydraulic Oil Temp B-7
2A Lighter - Cigar E-2 1 Sensor - AIH Coolant Temp C-8
3A Meter - Service E-2 9 Sensor - Fuel Level A-2
1A Monitor F-2 16 Sensor - Pump Discharge Press A-7
14 Motor - Starter B-B 17 Sensor - Speed B-8
30 Motor - Tilt F-9 5A Sensor - Sun Load F-2
4A Motor - Upper Wiper B-5 19 Solenoid - Air Cond Comp Clutch B-8
15 Motor - Washer D-6 20 Solenoid - Engine Shutdown A-9
Component Location Chart
Machine
Location
Components
Schematic
Location
Machine
Location
Components
Schematic
Location
32 Solenoid - Grapple C-3 3C Switch - Horn H-1
1G Solenoid - Hydraulic Lock H-2 1E Switch - Hydraulic Oil Level B-7
1F Solenoid - Level Finish A-7 27 Switch - Implement Swing Press C-7
31 Solenoid - Rotate A-7 5C Switch - Neutral Start H-2
21 Solenoid - Swing Brake A-2 4B Switch - One Touch Low Idle F-3
2F Solenoid - Travel Speed A-7 1B Switch - Panel F-3
3F Solenoid - Trenching A-7 28 Switch - Refrigerant Low Press E-9
7A Speaker B-6 6B Switch - Rotate (ccw) F-3
22 Switch - Air Cleaner E-9 6C Switch - Rotate (cw) H-1
7B Switch - Backup D-4 8B Switch - Speed Change D-5
23 Switch - Boom Raise Press C-7 2B Switch - Starter E-3
24 Switch - Coolant Level E-9 29 Switch - Travel Press B-7
12D Switch - Disconnect G-9 18D Timer- Engine Shutdown H-7
25 Switch - Engine Oil Level A-9 18 Unit- Air Conditioner H-6
26 Switch - Engine Oil Press B-8 5D Unit - Heater Control J-8
5B Switch - Grapple (close) F-3 4F Valve - Proportional Reducing A-7
7C Switch - Grapple (open) H-1 6A Wiper Control E-2
Area A = Inside of cab
Area B = Inside of R.H. console
Area C = Inside of L.H. console
Area D = Around relay panel
Area E = Around hydraulic oil tank
Area F = Around pilot manifold
Area G = Bottom platform
Component Location Chart
A
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
7
F
17
18
39
20
21
22
23
24
25
26
27
28
29
30
31
32
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
7
F
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
G
38
40
19
35
37
34
36
33
41
G
33
34
35
36
37
38
39
40
41
11
10
12
13
Machine Harness Connector And Component Locations
1
2
3
4
5
3
4
5
6
8
1
2
7
1
2
3
4
5
6
3
4
5
6
1
2
7
1
2
3
4
5
6
7 8
9
3
4
5
6
8
9
1
2
7
1
2
3 4
3
4
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3
4
5
6
8
9
10
11
12
14
15
13
16
1
2
17
18
19
20
21
22
7
1
2
3
1
2
17
18
19
20
25
26
27
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
Part No. Component Description Resistance (Ohms)¹
3E-1906 Solenoid - A/C Clutch 17.6 ± 0.6
3E-9205 Solenoid - Grapple 24.9
4I-5394 Sender - Hydraulic Oil Temp 6130 to 7500
102-8015 Resistor - Backup 41.0 ± 2.05
111-9916 Solenoid - Engine/Pump Control 11.7 ± 1.2
121-1490
Solenoid - Level Finish
Trenching
32.0 ± 3.2
121-1491
Solenoid - Hydraulic Lock
Swing Brake
Travel Speed
32.0 ± 3.2
¹ At room temperature.
Off Machine Switch Specifications
Part No. Function Actuate Deactuate Contact Position
106-0179
Implement Pressure
Travel Pressure
1225.00 ± 98.00 kPa
(177.67 ± 14.21 psi)
882.00 kPa MIN
(127.92 psi MIN)
Normally Open
106-0180 Boom Raise Pressure
2646.00 ± 196.00 kPa
(383.77 ± 28.43 psi)
2156.00 ± 196.00 kPa
(312.70 ± 28.43 psi)
Normally Open
Related Service Manuals
Form Number
RENR1998
RENR1044
Title
Engin/ Pump Control
Starting And Changing
3
6
7
3
2
2
1
36
35
34
33
10
13
1
5
37
7
8
10
13
14
4
19
9
12
38
4
9
2
4
8
5
1
1
4
12
2
4
6
9
6
1
13
12
20
30
29
1
28
2
3
40
11
3
32
31
5
4
6
5
18
2
15
41
7
16
17
3
16
8
7
1
2
15
5
8
39
11
9
4
10
3
2
1
27
26
25
24
23
22
21
20
19
15
18
14
17
5
6
3
11
14
D
D
A
G
D
D
D
E
C
A
F
G
F
F
F
D
D
D
D
G
D
D
D
D
G
B
A
A
G
A
D
C
G
G
G
A
G
B
C
G
A
G
G
G
G
D
D
D
D
D
A
E
D
G
A
B
C
B
C
B
C
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
101 RD Bat (+) A513 RD DC/DC Convertor Memory Output
103 RD Aux Ckt A579 OR Wiper Motor (+)
105 RD Key Sw A586 OR Wiper SW To Wiper Cont
109 RD Alt Output (+) Term A588 GN Safety Sol Relay To Sol
110 RD Aux Ckt C513 BU A/C Key Pad Interface
111 RD Aux Ckt C514 PK A/C Key Pad Interface
112 PU Main Power Rly Output C515 BR A/C Key Pad Interface
113 OR Opr Mon Panel B (+) Switched C516 GY A/C Key Pad Interface
114 RD Warning Horn (Forward) C517 GN A/C Key Pad Interface
115 RD Aux Ckt C518 WH A/C Key Pad Interface
118 GY Aux Ckt C519 OR A/C Key Pad Interface
120 YL Aux Ckt C520 PK A/C Key Pad Interface
124 RD A/C C521 PU A/C Key Pad Interface
129 BU Aux Ckt C523 BU A/C Key Pad Interface
147 PU Aux Ckt C524 WH A/C Key Pad Interface
149 PU Aux Ckt C525 YL A/C Key Pad Interface
150 RD Bat (+) C526 BR A/C Key Pad Interface
151 GN Aux Ckt C536 PK Operator A/C On Lamp
154 RD Aux Ckt C537 GN A/C Photo Sensor (+) Sig
168 RD Aux Ckt C538 OR A/C Photo Sensor (-) Sig
172 RD Aux Ckt C539 YL A/C Control SW IP1
176 YL Aux Ckt C540 GY A/C Control SW IP2
177 RD Main Brkr C541 GN A/C Controi SW IP3
178 GN Main Brkr
179 BU Aux Ckt 607 PK Flood Lamp - Front
180 GN Aux Ckt 615 YL Cab Flood Lamp
185 YL Aux Ckt 616 BU Boom Flood Lamp
189 RD Aux Ckt
763 BU Torque Converter SW
200 BK Main Chassis 786 GN Eng Speed Cont - Hi Press SW
201 BK Operator Monitor Return 788 YL Eng Speed (+)
235 BK Eiectronic Pump Ctrl Gnd 791 RD Eng Speed Cont - Lo Sol
A270 BK Operator Panel A718 PU Start Aid Coolant Sensor Signal
A755 PK Throttle SW #1
304 WH Starter Relay No.1 Output A756 BU Throttie SW #2
306 GN Starter Relay Coil To Neut Start A757 GY Throttle SW #3
307 OR Start Key SW To Neut Start A758 BR Throttle SW #4
308 YL Main Power Relay Coil A761 PU Electronic Pump Cont
309 GY Alternator Regulator Term A762 PU Electronic Pump Cont
310 PU Start Aid SW to Start Aid Sol A768 BU Pump Control Valve #1 (+)
320 RD Horn Relay Coil To SW A769 GY Pump Control Valve #2 (-)
321 BR Travel Aiarm A770 PK Electronic Pump Control Bypass SW To Resistor
322 GY Warning Horn (Forward) A771 PU Float SW
325 PK Fuel Pump Relay Cut-Out F771 OR Backup SW
327 PK Shutdown Soi F772 WH Backup SW
330 YL Neut Start Reiay Coil F773 OR Governor Accel
F774 WH Governor Decel
403 GN Alternator(R) Term. J703 PK Alt Pulse Sig To Anti-Start Relay
405 GY Opr Mon Oil Press (Low Setting) J709 GN Cab/Chassis Lamp Relay
412 BU Opr Mon Cool Flow 877 YL Glow Plug Magnetic SW To Glow Plug
430 BU Opr Mon Air Fiiter E853 PU Grapple Tong Open Sol
487 OR Hyd Oil Flow SW E854 GN Grapple Tong Close Sol
491 PK Hyd Oil Temp Sensor E855 WH Grapple Rotate CW Sol
492 GY Coolant Temp Sensor Signal E856 GY Grapple Rotate CCW Sol
495 GN Fuei Level Signal K904 GN Pump Discharge Signal
Accessory Circuits (cont'd.)
Basic Machine Circuits
Monitoring Circuits
Lighting Circuits
Control Circuits
Ground Circuits
RENR2918
July 1998
315B Forest Swing Machine
Electrical System
7RZ1-283
©
1998 Caterpillar
All Rights Reserved
Printed in U.S.A.
11
12
1
2
3
4
5
6
7
8
9
10
12
11
10
9
8
7
6
5
4
3
2
1
PK
2OR
3
6
5
4
2
1
1
172-RD-18
189-RD-14
320-RD-18
154-RD-18
151-GN-18
150-RD-18
114-RD-18
168-RD-14
115-RD-14
149-PU
177-RD-10
111-RD-14
519-PK-18
K906-GN-18
F773-OR-18
F774-WH-18
A770-PK-18
A769-GY-18
A768-BU-18
791-RD-18
786-GN-18
K909-BU-18
A771-PU-18
L978-GY-18
L974-GN-18
L977-YL-18
K997-BU-18
788-YL-18
A762-PU-18
763-BU-18
412-BU-18
C468-BU-18
321-BR-18
405-GY-18
492-GY-18
491-PK-18
495-GN-18
430-BU-18
496-WH-18
K904-GN-18
A761-PU-18
L971-GN-18
L975-PK-18
487-OR-18
403-GN-18
506-PU-18
F
BB
F F
403-GN-18
168-RD-18
A769-GY-18
491-PK-18
496-WH-18
495-GN-18
403-GN-18
788-YL-18
A762-PU-18
C468-BU-18
405-GY-18
492-GY-18
A768-BU-18
168-RD-18
L971-GN-18
491-PK-18
496-WH-18
A768-BU-18
A769-GY-18
L978-GY-18
763-BU-18
L977-YL-18
K904-GN-18
K997-BU-18
L974-GN-18
A771-PU-18
K904-GN-18
327-PK-14
877-YL-8
405-GY-18
C468-BU-18
513-OR-18
K906-GN-18
309-GY-18
J703-PK-18
A771-PU-18
403-GN-18
109-RD-6
L974-GN-18
304-WH-8
492-GY-18
L978-GY-18
A718-PU-18
101-RD-6
L977-YL-18
A762-PU-18
763-BU-18
K997-BU-18
F
B
788-YL-18
513-OR-18
BK/PK
BK
321-BR-18
519-PK-18
200-BK-18
412-BU-18
ATCH REFRIGERANT
LOW PRESS. SW
105-9408 (NOTE A)
ATCH
TRAVEL ALARM
3E-7738
513-OR-18
B
COOLANT
LEVEL SW
096-0744
513-OR-18
CC
BB
AA
200-BK-18
412-BU-18
519-PK-18
487-OR-18
BATTERY
3T-5760
POS
NEG NEG
POS
L971-GN-18
F
RD-00RD-00BK-00
Y/W
Y/G
B
B
R/L
W/G
R/G
B/L
W/R
G
R/L
B/R
Y/R
G/R
L/R
BR/R
O/RR
BR B/W
R/W
R/Y
G/W
LG/R
L/W
PLATFORM
RISERCHASSIS
GROUND STRAP
128-8886
200-BK-14
200-BK-14
519-PK-18
615-YL-18
103-RD-18
103-RD-18
A588-GN-18
105-RD
185-YL-18
129-BU
118-GY
K905-RD
111-RD-14
177-RD-10
149-PU
115-RD-14
168-RD-14
114-RD-18
150-RD-18
151-GN-18
154-RD-18
320-RD-18
189-RD-14
172-RD-18
124-RD-14
509-WH-18
508-PU-18
511-BR-18
512-GN-18
103-RD-18
103-RD-18
512-GN-18
511-BR-18
508-PU-18
509-WH-18
A513-RD-18
592-BU-18
200-BK-18
172-RD-18
189-RD-14
320-RD-18
154-RD-18
151-GN-18
150-RD-18
114-RD-18
168-RD-14
115-RD-14
149-PU
105-RD
124-RD-14
177-RD-10
118-GY
111-RD-14
103-RD-18
K905-RD
147-PU
118-GY
129-BU
200-BK-14
110-RD-14
615-YL-18
519-PK-18
519-PK-18
579-BR-14
6
5
4
3
2
1
103-RD-18
103-RD-18
185-YL-18
615-YL-18
FUSE
5A 139-5345
10A 9W-1442
15A 9W-1441
111-RD-14
A A
HH
168-RD-14
ENG GOV
200-BK-14
A
H
HHH
579-BR-14
154-RD-18
189-RD-14
10
12
11
2
3
4
5
9
8
150-RD-18
OPERATOR STATION
10A
10A
15A
5A
15A
5A
15A
10A
120-YL
DOME LAMP
10A
10A
10A
CONVERTER
189-RD-14
5A
K905-RD
151-GN-18
5A
CIGAR LIGHTER
114-RD-18
115-RD-14
BOOM LAMP
ENG SHUT TIMER
C537-GN-18
110-RD-14
120-YL
149-PU
150-RD-18
124-RD-14
172-RD-18
103-RD-18
178-GN-10
E/P CONT
5A
A/C /HEATER
154-RD-18
151-GN-18
115-RD-14
CAB/CHASSIS LAMP
114-RD-18
HORN
7
6
5A
177-RD-10
124-RD-14
103-RD-18 10A
10A
10A
15A
10A
320-RD-18
200-BK-18
C538-OR-18
5A
K905-RD
ATCH A/C UNIT
111-6413
SI 2
SI 1
SI 0
DS 4
DS 3
DS 2
DS 1
DS 0
C540-GY-18
C539-YL-18
COL 1
C541-GN-18
C513-BU-18
C514-PK-18
C515-BR-18
C516-GY-18
C517-GN-18
C518-WH-18
C519-OR-18
C520-PK-18
C521-PU-18
6
1
3
HEATER UNIT
111-6288
4
5
2
C523-BU-18
C524-WH-18
C525-YL-18
C526-BR-18
C536-PK-18
A270-BK-18
COL 0
COL 2
COL 3
COL 4
COL 5
COL 6
COL 7
LIGHT
GND
H
A A
200-BK-18
FUSE BASE
111-4812
150-RD-18
129-BU
149-PU
168-RD-14
172-RD-18
HYD LOCK SOL
147-PU
147-PU
ATCH SOL
147-PU
176-YL
AUX CKT
179-BU-10
110-RD-14
TIMER RELAY
WASHER/WIPER
118-GY
180-GN
AUX CKT
150-RD-18
HYD LOCK SW
579-BR-14
178-GN-10
179-BU-10
179-BU-10
177-RD-10
178-GN-10
A
H H
A
320-RD-18
110-RD-14
10A
BACKUP
185-YL-18
1
L25
L24
L24
L8
L18
185-YL-18
HH
H
512-GN-18
511-BR-18
509-WH-18
508-PU-18
K905-RD
129-BU
103-RD-18
118-GY
103-RD-18
105-RD
K909-BU-18
A
A
7
8
1
6
5
4
3
2
G
G
12
10
8
11
12
9
10
11
1
9
8
2
7
6
5
4
3
2
1
4
5
6
8
1
7
4
6
5
3
2
7
3
GA
GA
590-GY-18
501-GN-18
A586-OR-18
F771-OR-18
F772-WH-18
L969-WH-18
L968-OR-18
K907-BU-18
A755-PK-18
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
786-GN-18
791-RD-18
200-BK-18
308-YL-18
185-YL-18
A768-BU-18
A769-GY-18
A770-PK-18
F774-WH-18
F773-OR-18
K906-GN-18
105-RD
113-OR-18
791-RD-18
786-GN-18
A586-OR-18
501-GN-18
590-GY-18
A755-PK-18
A756-BU-18
A757-GY-18
A758-BR-18
105-RD
307-OR-18
308-YL-18
200-BK-18
F771-OR-18
F773-OR-18
F774-WH-18
F772-WH-18
K909-BU-18
K907-BU-18
A770-PK-18
L969-WH-18
L968-OR-18
G
A769-GY-18
A768-BU-18
K906-GN-18
185-YL-18
200-BK-18
K909-BU-18
K907-BU-18
L969-WH-18
A770-PK-18
L968-OR-18
A769-GY-18
A768-BU-18
A769-GY-18
A768-BU-18
K906-GN-18
185-YL-18
185-YL-18
L968-OR-18
200-BK-18
F771-OR-18
F773-OR-18
L969-WH-18
F774-WH-18
11
8
F772-WH-18
5
A770-PK-18
K906-GN-18
2
12
10
K907-BU-18
9
185-YL-18
7
6
4
3
1
185-YL-18
3
2
1
200-BK-18
BACKUP
EPR VALVE SW
114-0421
GG
BACKUP
GOV SW
110-7884
K909-BU-18
200-BK-18
K909-BU-18
L972-BU-18
185-YL-18
A588-GN-18
A586-OR-18
501-GN-18
590-GY-18
K909-BU-18
547-OR-18
F773-OR-18
F774-WH-18
A770-PK-18
A769-GY-18
A768-BU-18
K906-GN-18
549-PK-18
791-RD-18
786-GN-18
185-YL-18
113-OR-18
L972-BU-18
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
K907-BU-18
L968-OR-18
L969-WH-18
F772-WH-18
F771-OR-18
200-BK-18
113-OR-18
L13
L18
L6
L6
L16
L12
L9
C
B
A
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
GRAPPLE CLOSE
RELAY
111-4871
ROTATE CCW
RELAY
111-4871
200-BK-18
200-BK-14
200-BK
129-BU
615-YL-18
K912-GN-18
201-BK-18
103-RD-18
A586-OR-18
118-GY
200-BK-18
506-PU-18
501-GN-18
590-GY-18
ENG/PUMP CONT
151-9331
506-PU-18
615-YL-18
615-YL
103-RD-18
118-GY
103-RD-18
129-BU
508-PU-18
509-WH-18
511-BR-18
512-GN-18
590-GY-18
501-GN-18
A586-OR-18
200-BK-14
200-BK-14
K997-BU-18
403-GN-18
200-BK-18
K905-RD
235-BK
K911-PK-18
K912-GN-18
ATCH
GRAPPLE SOL
3E-9205
CLOSE
OPEN
B
E853-PU-18
E854-GN-18
200-BK-18
1
2
3
4
200-BK-18
L972-BU-18
308-YL-18
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
K912-GN-18
K911-PK-18
235-BK-18
L909-BU-18
L908-OR-18
487-OR-18
L972-BU-18
A758-BR-18
A757-GY-18
200-BK-18
L975-PK-18
K912-GN-18
K911-PK-18
A756-BU-18
A755-PK-18
235-BK-18
K905-RD-18
308-YL-18
235-BK-18
K905-RD-18
235-BK
K905-RD
F771-OR-18
F772-WH-18
K907-BU-18
L968-OR-18
L969-WH-18
L971-GN-18
L970-GY-18
A761-PU-18
200-BK-18
F771-OR-18
K904-GN-18
496-WH-18
430-BU-18
F772-WH-18
495-GN-18
K907-BU-18
L968-OR-18
491-PK-18
492-GY-18
MONITOR +B OUT
THROTTLE DIAL S1
THROTTLE DIAL S2
THROTTLE DIAL S3
THROTTLE DIAL S4
GOV ACTR (A)
EPR VALVE (+)
GOV ACTR (B)
GOV ACTR FDBK
COOLANT LEVEL SW
TRAVEL SPEED SOL
ENG SPEED SENSOR (-)
ENG SPEED SENSOR (+)
TRENCHING SOL
IMPLEMENT PRESS. SW
ENG OIL LEVEL SW
FUEL LEVEL SENSOR
405-GY-18
321-BR-18
FRONT PUMP PRESS. SENSOR
HYD OIL LEVEL SW
AIR CLEANER SENSOR
L969-WH-18
HYD OIL TEMP SENSOR
RS485 - (VALVE CONT)
RS485 + (VALVE CONT)
RS232C (GND)
RS232C (RX)
COOLANT SENSOR
9
20
10
28
31
26
13
30
29
35
40
2
6
39
6
24
25
22
15
ALTERNATOR (R TERM)
RS485 - (RH JOYSTICK)
7
38
12
TRAVEL ALARM
ENG OIL PRESS. SW
36
SWING BRAKE SOL
C468-BU-18
412-BU-18
763-BU-18
A762-PU-18
788-YL-18
23
EPR VALVE (-)
17
21
8
RS485 + (LH JOYSTICK)
7
L977-YL-18
8
L974-GN-18
L978-GY-18
A771-PU-18
RS485 - (LH JOYSTICK)
RS485 + (PEDAL) 9
403-GN-18
10
RS485 + (SEMI AUTO)
RS485 - (PEDAL)
RS485 + (RADIO CONT)17
HYD TANK PRESS. SW
RS485 + (MONITOR)
RS485 - (SEMI AUTO)
HYD TANK INDICATOR
RS485 + (RH JOYSTICK)
RS485 - (MONITOR)
27
18
TRAVEL PRESS. SW
HYD OIL FILTER INDICATOR
18 RS485 - (RADIO CONT)
RS485 + (ELEC GOV)19
+B
+B
AIH INDICATOR
FINE SWING SW
K997-BU-18
BOOM RAISE PRESS. SW
LEVEL FINISH SOL
DUAL PWR SOL
AUX HYD PRESS. SW
32
33
25
RS485 - (ELEC GOV)
26
12
40
2
4
28
27
LOW IDLE SW
21
20
1
11
22
34
3
24
23
14
13
16
15
5
36
35
29
31
30
39
38
37
GND
GND
HAMMER PRESS. SW
RS232C (TX)
A
37
4
3
OPTION SENSOR (PWM)
ATCH
ANTENNA
8E-1118
1
16
19
5
OPTION SENSOR (PWM)
32
33
14
11
34
JOYSTICK +B OUT
A A
AA
A A
2
3
4
5
6
1
K905-RD
235-BK
L975-PK-18
K997-BU-18
L970-GY-18
L971-GN-18
487-OR-18
A761-PU-18
K904-GN-18
496-WH-18
430-BU-18
K997-BU-18
495-GN-18
491-PK-18
492-GY-18
405-GY-18
7
8
1
6
5
4
3
2
321-BR-18
C468-BU-18
412-BU-18
2
3
4
5
6
11
1
10
9
8
7
12
763-BU-18
A762-PU-18
788-YL-18
403-GN-18
L977-YL-18
L974-GN-18
L978-GY-18
A771-PU-18
K997-BU-18
K997-BU-18
L908-OR-18
L909-BU-18
235-BK-18
A
L10
A
L12
L12
L13
L9
L1
180-GN
ATCH RELAY PANEL
B
R/L
W/G
R/G
B/L
W/R
B/R
Y/R
G/R
L/R
O/R
B/W
R/W
R/Y
G/W
L/W
BR/G
LG/R
180-GN
548-GY-18
1
180-GN 2
200-BK-18
549-PK-18
547-OR-18
3
4
546-BU-18
5
6
E854-GN-18
E853-PU-18
E856-GY-18
E855-WH-18 4
3
2
1
F
FM
M
E856-GY-18
E855-WH-18
506-PU-18
200-BK-18
WASHER
7T-8890
MOTOR
506-PU-18
200-BK-18
F
F
F
A579-OR
200-BK
200-BK-18
K911-PK-18
200-BK
403-GN-18
C538-OR-18
C537-GN-18
200-BK-14
201-BK-18
200-BK-18200-BK-18
K997-BU-18
200-BK
D
CAB
D
D
+
GND
LIGHT
RS485-
+B
MAIN
RS485+
GND
WASH
+B
PUMP
WIPER
W LOW
W INT
WIPER/WASHER
CONTROLLER
127-9838
D
D
MONITOR
106-0172
SUN LOAD
SENSOR
128-2162(NOTE B)
-
SERVICE
METER
6T-7337
D
D
GND
CIGAR
LIGHTER
9W-0335
HEATER SWITCH
PANEL
111-6411
H
GND
LIGHT
COL 7
COL 6
COL 5
COL 4
COL 3
COL 2
COL 0
A270-BK-18
C536-PK-18
C526-BR-18
C525-YL-18
C524-WH-18
C523-BU-18
C521-PU-18
C520-PK-18
C519-OR-18
C518-WH-18
C517-GN-18
C516-GY-18
C515-BR-18
C514-PK-18
C513-BU-18
C541-GN-18
COL 1
C539-YL-18
C540-GY-18
DS 0
DS 1
DS 2
DS 3
OPERATOR STATION
615-YL
101-RD-4
101-RD-4
200-BK-4
DS 4
SI 0
A
200-BK-18
A588-GN-18
615-YL
SI 1
SI 2
H
HYD LOCK SOL
121-1491
NEUTRAL START
LIMIT SW
111-4799
150-RD-18
ATCH RADIO
151-GN-18
154-RD-18
2
1
ATCH A/C
SWITCH PANEL
111-6414
C
B
A
L25
L24
L8
L25
L3
1
2
615-YL
615-YL
615-YL
615-YL
2
1
1
615-YL
123-WH-14
615-YL
2
200-BK
200-BK
200-BK
200-BK
607-PK
2
1
607-PK
200-BK-18
607-PK
200-BK-18
200-BK-4
200-BK-18
E856-GY-18
200-BK-18
E855-WH-18
E856-GY-18
200-BK-18
200-BK-18
E855-WH-18
CAB
L
CAB LAMP
135-0550
CAB LAMP
135-0550
L
513-OR-18
L
L
CAB
E
A761-PU-18
F773-OR-18
F774-WH-18
547-OR-18
546-BU-18
548-GY-18
549-PK-18
412-BU-18
E856-GY-18
123-WH-14
615-YL
513-OR-18
E
321-BR-18
492-GY-18
405-GY-18
C468-BU-18
A762-PU-18
788-YL-18
403-GN-18
495-GN-18
496-WH-18
491-PK-18
A769-GY-18
487-OR-18
A768-BU-18
L971-GN-18
168-RD-18
5
4
3
2
1
OPERATOR STATION
E855-WH-18
K997-BU-18
763-BU-18
L977-YL-18
L978-GY-18
179-BU-10
L974-GN-18
A771-PU-18
K906-GN-18
430-BU-18
K904-GN-18
147-PU
579-BR-14
GND
+B
L CHASSIS
L BOOM
WASH
W LOW
W INT
307-OR-18
G
G
200-BK-18
A758-BR-18
A757-GY-18
A756-BU-18
113-OR-18
791-RD-18
105-RD
786-GN-18
307-OR-18
A586-OR-18
501-GN-18
SWITCH PANEL
111-4800
9G-7641
R
C
308-YL-18
6
S
B
OFF
ON
ST
590-GY-18
111-RD-14
A755-PK-18 PK
BU
GN
308-YL-18
BR
BK
200-BK-18
S4
S3
S2
S1
COM
G
THROTTLE
POS SW
106-0107
235-BK-18
615-YL
519-PK-18
151-GN-18
150-RD-18
A588-GN-18
172-RD-18
L908-OR-18
L909-BU-18
L975-PK-18
168-RD-14
123-WH-14
308-YL-18
L6
L5
L4
L4
L3
180-GN
K909-BU-18
154-RD-18
615-YL
791-RD-18
115-RD-14
200-BK-18
200-BK-18
615-YL
123-WH-14
ATCH
ROTATE SOL
127-7487
ROTATE CCW
ROTATE CW
GROUND STRAP
7G-1060
E855-WH-18
200-BK-18
RISER
E856-GY-18
200-BK-18
1
22
1
BB
J709-GN-18 200-BK-18
607-PK
615-YL
CAB/CHASSIS
LAMP RELAY 3
111-4871
123-WH-14
CAB/CHASSIS
LAMP RELAY 1
111-4871
791-RD-18115-RD-18
101-RD-4
200-BK-4
ATCH TILT
MOTOR
113-5794
MOTOR
DD
235-BK
200-BK-18
200-BK-14
EE
200-BK-14
200-BK-14
200-BK-18
235-BK
200-BK-18
K905-RD
235-BK
200-BK-18
200-BK-14
235-BK
200-BK-14
200-BK-14
C537-GN-18
C538-OR-18
120-YL
C538-OR-18
C537-GN-18
120-YL
C538-OR-18
C537-GN-18
120-YL
120-YL
C537-GN-18
C538-OR-18
592-BU-18
A513-RD-18
118-GY
118-GY
200-BK-18
118-GY
A579-OR
A586-OR-18
403-GN-18
615-YL-18
103-RD-18
K912-GN-18
K911-PK-18
K997-BU-18
C538-OR-18
C537-GN-18
501-GN-18
506-PU-18
590-GY-18
5
3
6
2
1
4
BK
129-BU
200-BK
103-RD-18
110-RD-14
200-BK-18
200-BK-18
4
3
2
512-GN-18
511-BR-18
509-WH-18
508-PU-18
615-YL
592-BU-18
A513-RD-18
200-BK-18
615-YL
200-BK
509-WH-18
508-PU-18
A769-GY-18
491-PK-18
496-WH-18
495-GN-18
403-GN-18
788-YL-18
A762-PU-18
C468-BU-18
405-GY-18
492-GY-18
321-BR-18
F774-WH-18
F773-OR-18
A761-PU-18
K904-GN-18
430-BU-18
K906-GN-18
A771-PU-18
L974-GN-18
L978-GY-18
L977-YL-18
763-BU-18
K997-BU-18
147-PU
487-OR-18
L971-GN-18
546-BU-18
547-OR-18
579-BR-14
549-PK-18
548-GY-18
A768-BU-18
511-BR-18
512-GN-18
6
5
3
4
1
A513-RD-18
592-BU-18
12
8
9
10
11
1
2
4
5
506-PU-18
412-BU-18
L909-BU-18
L908-OR-18
172-RD-18
A588-GN-18
150-RD-18
151-GN-18
519-PK-18
615-YL
235-BK-18
111-RD-14
308-YL-18
307-OR-18
6
7
3
200-BK-18
615-YL
546-BU-18
548-GY-18
180-GN
549-PK-18
547-OR-18
547-OR-18
615-YL
615-YL
615-YL
615-YL
549-PK-18
L5
615-YL
AF
615-YL
615-YL
L14
L15
F A
1
2
3
4
5
6
7
8
9
12
11
10
K909-BU-18
180-GN
308-YL-18
123-WH-14
168-RD-14
L975-PK-18
1
2
4
5
6
3
592-BU-18
A513-RD-18
F A
3
7
6
5
4
2
1
11
10
9
8
12
VV
178-GN-10
177-RD-10
179-BU-10
F A
AF
PLATFORM
GN
YL
H
548-GY-18
A588-GN-18
546-BU-18
549-PK-18
A588-GN-18
A588-GN-18
200-BK-18
547-OR-18
320-RD-18
BR
WH
GY
BU
GN
L15
L972-BU-18
200-BK-18
BK
RD
WH
BR
YL
L19
L19
L11
L11
L26
L28
L28
L22L22
L22
L26
L28
H
H
ROTATE SW
(CW)
GRAPPLE SW
(OPEN)
CONTROL GP
136-1206
HORN SW
CONTROL GP
136-1206
ATCH
ANTENNA GABLE
134-4430
L7
ATCH LAMP
200-BK-18
200-BK-18
200-BK-18
177-RD-10
178-GN-10
123-WH-14
15A
200-BK-18
512-GN-18
G
511-BR-18
509-WH-18
508-PU-18
A513-RD-18
592-BU-18
200-BK-18
592-BU-18
A513-RD-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
H
A
3
4
6
H
1
2
8
7
200-BK-18
327-PK-14
168-RD-14
GND
SOLENOID
+ BATTERY
BK-20
GN-20
BU-14
RD-14
ENG SHUTDOWN
TIMER
138-5190
5
6
5
4
3
2
7
1
8
F A
1
2
3
4
5
6
7
8
9
12
11
10
L24
LH SPKR (-)
GRAPPLE SW
(CLOSE)
LH SPKR (+)
CONV (OUT)
CONV (MEM)
RH SPKR (-)
GND
RH SPKR (+)
ATCH
12 VDC RADIO
103-8525
ROTATE SW
(CCW)
A588-GN-18
607-PK
607-PK
200-BK-18
10A
200-BK-18
200-BK-18
200-BK-18
235-BK
A588-GN-18
200-BK-18
200-BK-14
ZZ
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
THIS SCHEMATIC IS FOR THE 315B FORESTRY.
CC
BB
AA
CABLE AS.
XX
WIRE AS.
L14
G
L
K
J
H
G
E
D
C
B
DESCRIPTIONSYMBOL
CONNECTOR
ELECTRICAL CONNECTION
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
L#
CIRCUIT GROUPING
DESIGNATION
IDENT PART NO. LOC
HARNESS AS.
G
L27
L27
WW
ONE TOUCH
LOW IDLE SW
200-BK-14
L27
200-BK-14
200-BK-14
200-BK-18
200-BK-18
200-BK-18
J709-GN-18
124-RD-14
180-GN
200-BK-18
548-GY-18
A
546-BU-18
548-GY-18
607-PK
A588-GN-18
A588-GN-18
607-PK
A588-GN-18
H
A
607-PK
615-YL
615-YL
180-GN
548-GY-18
A588-GN-18
546-BU-18
615-YL
200-BK-18
A588-GN-18
DIODE
121-1022
309-GY-18
308-YL-18
306-GN-18
168-RD-14
327-PK-14
200-BK-18
SS
TT
RR
ZZ
YY
VV
UU
UU
TT
PP
NN
SS
WW
YY
200-BK-18
200-BK-18
615-YL
607-PK
180-GN
200-BK-18
179-BU-10
189-RD-14
113-OR-18
113-OR-18
L7
123-WH-14
113-OR-18
150-RD-18
172-RD-18
200-BK-18
113-OR-18
546-BU-18
308-YL-18
SWITCH PANEL
546-BU-18
579-BR-14
M
179-BU-10
178-GN-10
113-OR-18
123-WH-14
A770-PK-18
189-RD-14
114-RD-18
320-RD-18
149-PU
786-GN-18
308-YL-18
308-YL-18
101-RD-8
548-GY-18
200-BK-18
308-YL-18
DIODE
121-1022
112-PU-18
K909-BU-18
200-BK-18
308-YL-18
177-RD-10
101-RD-6
112-PU-6
308-YL-18
308-YL-18
112-PU-6
105-RD
PP
RR
TT
129-BU
VV
XX
L21
179-BU-10
123-WH-14
L1
1
6
7
8
9
5
4
3
2
11
12
10
200-BK-18
E853-PU-18
E854-GN-18
308-YL-18
F774-WH-18
F773-OR-18
A761-PU-18
172-RD-18
178-GN-10
101-RD-6
123-WH-14
308-YL-18
308-YL-18
110-RD-14
189-RD-14
308-YL-18
111-RD-14
308-YL-18
101-RD-6
109-RD-6
ZZ
579-BR-14
112-PU-18
124-RD-14
200-BK-18
RR
200-BK-18
307-OR-18
330-YL-18
154-RD-18
149-PU
BREAKER 2
139-4724
124-RD-14
579-BR-14
403-GN-18
J703-PK-18
322-GY-18
616-BU
309-GY-18
A718-PU-18
304-WH-8
877-YL-8
101-RD-6
109-RD-6
178-GN-10
179-BU-10
235-BK-18
L908-OR-18
L909-BU-18
A588-GN-18
150-RD-18
151-GN-18
111-RD-14
307-OR-18
BREAKER 3
139-4724
579-BR-14
101-RD-6
877-YL-8
304-WH-8
177-RD-10
179-BU-10
L975-PK-18
308-YL-18
109-RD-8
177-RD-10
30A
K909-BU-18
308-YL-18
124-RD-14
A770-PK-18
149-PU
877-YL-8
101-RD-8
615-YL
154-RD-18
786-GN-18
791-RD-18
109-RD-8
304-WH-8
320-RD-18
114-RD-18
189-RD-14
115-RD-14
154-RD-18
307-OR-18
200-BK-18
NEUTRAL START
RELAY
111-4871
308-YL-18
306-GN-18
109-RD-6
A770-PK-18
154-RD-18
307-OR-18
189-RD-14
111-RD-14
L975-PK-18
151-GN-18
150-RD-18
A588-GN-18
791-RD-18
114-RD-18
320-RD-18
786-GN-18
149-PU
115-RD-14
615-YL
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
L975-PK-18
579-BR-14
308-YL-18
200-BK-18
A718-PU-18
200-BK
INDICATOR
403-GN-18
2
1
110-RD-14
START RELAY
125-1302
330-YL-18
616-BU
306-GN-18
607-PK
322-GY-18
DISCONNECT SW
7N-0718
178-GN-10
A588-GN-18
129-BU
178-GN-10
185-YL-18
180-GN
118-GY
147-PU
120-YL
150-RD-18
111-RD-14
177-RD-10
105-RD
110-RD-14
168-RD-14
K905-RD
307-OR-18
308-YL-18
308-YL-18
L2
307-OR-18
30A
111-RD-14
105-RD
235-BK-18
L909-BU-18
L908-OR-18
L26
BREAKER 1
6T-3645
OUT 1
OUT 2
+B
IN 1
GND
IN 2
C C
F
C
F
C
B
A718-PU-18
RELAY PANEL
6
5
4
3
2
1
105-RD
BACKUP
RESISTOR
102-8015
10
308-YL-18
308-YL-18
308-YL-18
200-BK-18
NN
4
2
3
1
103-RD-18
A588-GN-18
10
11
12
9
8
7
6
5
4
3
2
1
AF
HYD LOCK SOL
RELAY
111-4871
200-BK-18
123-WH-14
200-BK-18
200-BK-18
4
3
5
200-BK-18
BK
200-BK-18
200-BK-18
E854-GN-18
E853-PU-18
CAB LAMP
135-0550
YL
L
5
L2
L2
L10
L10
L9L9
327-PK-14
877-YL-8
C468-BU-18
179-BU-10
178-GN-10
CAB LAMP
135-0550
L
124-RD-14
308-YL-18
3
200-BK-18
GND
F/B
+B
ACCEL
DECEL
6
ENG GOV
ACTUATOR
106-0126
200-BK-18
F
2
1
304-WH-8
B
788-YL-18
B
101-RD-6
MOTBAT
G
S
RD-00
B
ENG SPEED
PICKUP
125-2966
A762-PU-18
AA
MOTOR
2
1
STARTER
127-5819
GLOW
PLUG
116-9985
877-YL-8
B
327-PK-14
ENG
SHUTDOWN SOL
117-9343
200-BK-6
109-RD-6
T
A718-PU-18
200-BK-18
AIH COOLANT
TEMP SENSOR
125-2982
B
2
1
200-BK-18
BB
B
B
B
200-BK-18
403-GN-18
109-RD-6
J703-PK-18
200-BK-18
513-OR-18
B
309-GY-18
B
B
200-BK-18
B
ALTERNATOR
5I-8085
ENG OIL
LEVEL SW
111-4760
1
2
2
1
200-BK-18
200-BK-18
C468-BU-18
405-GY-18
A718-PU-18
496-WH-18
491-PK-18
168-RD-18
487-OR-18
L977-YL-18
763-BU-18
L978-GY-18
A768-BU-18
A769-GY-18
487-OR-18
168-RD-18
491-PK-18
200-BK-18
PUMP DISCHARGE
PRESS. SENSOR
106-0178
SIGNAL
GROUND
+B
BK-18
BR-18
B
C
CHASSIS
B
YL-18
200-BK-6
200-BK-18
200-BK-18
200-BK-18
K997-BU-18
200-BK-18
K904-GN-18
200-BK-18
A
200-BK-18
496-WH-18
200-BK-18
200-BK-18
B
B
B
B
2
1
ENG/PUMP CONT
SOL
111-9916
T
COOLANT TEMP
SENDER
5I-7578
LEVEL FINISH
SOL
121-1490
A768-BU-18
TRENCHING
SOL
121-1490
TRAVEL SPEED
SOL
121-1491
A769-GY-18
L978-GY-18
200-BK-18
763-BU-18
200-BK-18
L977-YL-18
200-BK-18
B
L971-GN-18
A771-PU-18
L974-GN-18
200-BK-18
200-BK-18
B
200-BK-18
B
SIGNAL
GROUND
200-BK-18
BOOM RAISE
PRESS. SW
106-0180
B
B
2
1
+BA168-RD-18
B
HYD OIL
FILTER
INDICATOR
116-3660
200-BK-18
200-BK-18
200-BK-18
B
IMPLEMENT
PRESS. SW
106-0179
491-PK-18
HYD OIL
TEMP SENDER
4I-5394
HYD OIL
LEVEL SW
111-4760
496-WH-18
C
T
B200-BK-18
487-OR-18
A769-GY-18
A768-BU-18
200-BK-18
492-GY-18
492-GY-18
L978-GY-18
200-BK-18
763-BU-18
200-BK-18
TRAVEL
PRESS. SW
106-0179
200-BK-18
L977-YL-18
200-BK-18
K904-GN-18
309-GY-18
405-GY-18
403-GN-18
200-BK-6
J703-PK-18
L
E
B
P
R
ALT
B
B
K997-BU-18
K997-BU-18
K904-GN-18
ATCH
ANNTENA CABLE
8R-6111
2
1
1
2
2
1
1
ENG OIL SW
5I-8005
2
ENG
GROUND STRAP
134-3355
1
2
1
2
L20
L20
4
200-BK-18
F F
AIR CLEANER SW
109-9330
615-YL
616-BU
322-GY-18
877-YL-8
327-PK-14
513-OR-18
200-BK-18
J703-PK-18
309-GY-18
109-RD-6
101-RD-6
A718-PU-18
ATCH
A/C CLUTCH
SOL
3E-1906
304-WH-8
E856-GY-18
124-RD-14
114-RD-18
110-RD-14
115-RD-14
E855-WH-18
E854-GN-18
E853-PU-18
607-PK
E854-GN-18
E853-PU-18
E853-PU-18
E854-GN-18E854-GN-18
E853-PU-18 E853-PU-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
E854-GN-18
200-BK-18
321-BR-18
GRAPPLE
OPEN RELAY
111-4871
ROTATE CW
RELAY
111-4871
495-GN-18
K906-GN-18
J
322-GY-18
616-BU
J
6
BK
YL
2
1
7
8
9
10
2
11
8
592-BU-18
A513-RD-18
200-BK-14
7
511-BR-18
512-GN-18
509-WH-18
508-PU-18
1
200-BK-14
103-RD-18
120-YL
200-BK-14
615-YL
615-YL
118-GY
A579-OR
615-YL
LH SPKR (-)
CONV (OUT)
GND
CONV (MEM)
RH SPKR (-)
RH SPKR (+)
P
B+
2
E
E
ATCH
12 VDC RADIO
3E-7140
3
4
5
6
E
E
E
E
11
1
10
9
8
7
12
CONVERTER
112-3543
(2.5A)
GND
OR
BR
+
-
CAB
DOME LAMP
6C-9121
5
6
1
4
3
8
7
2
4
6
5
506-PU-18
2
1
3
SPEAKER (R)
6T-7695
E
E
D D
A
A A
L4
L3
LH SPKR (+)
L27
E
A
L4
L3
GY
UPPER WIPER
MOTOR
134-5551
SPEAKER (L)
6T-7695
-
+
IN
1
616-BU
322-GY-18
607-PK
IGN
200-BK-18
200-BK-18
200-BK-18
200-BK-18
K906-GN-18
495-GN-18
SWING BRAKE
SOL
121-1491
B
2
1
200-BK-18
200-BK-18
K906-GN-18
GND
FUEL
SENSOR
105-9911
MEM
2
1
B
OUT
495-GN-18
616-BU
322-GY-18
607-PK
GN
200-BK
200-BK
T
607-PK
200-BK
322-GY-18
200-BK-18
200-BK
616-BU
607-PK
2
200-BK
200-BK-18
616-BU
200-BK-18
200-BK
200-BK
322-GY-18
200-BK
12
200-BK-18
322-GY-18
K909-BU-18
616-BU
200-BK
200-BK-18
200-BK
322-GY-18
2
B
B
B
B
ATCH
BOOM LAMP
5I-8250
CHASSIS
1
H
HORN
7Y-3919
K
K
200-BK-18
A718-PU-18
4
113-OR-18
3
2
115-RD-14
791-RD-18
615-YL
154-RD-18
309-GY-18
616-BU
786-GN-18
149-PU
320-RD-18
114-RD-18
189-RD-14
A770-PK-18
1
200-BK-18
A588-GN-18
A588-GN-18
549-PK-18
200-BK-18
547-OR-18
L27
200-BK-18
EE
168-RD-14168-RD-14
327-PK-14327-PK-14
322-GY-18
123-WH-14
2
8
9
3
CHASSIS
200-BK-18
200-BK
A770-PK-18
RELAY PANEL
200-BK-18
BK-00
4
1
149-PU
149-PU-18
307-OR-18
200-BK-18
111-RD-14
189-RD-14
110-RD-14
111-RD-14
200-BK-18
151-GN-18
K909-BU-18
F
TIMER RELAY
111-4870
150-RD-18
115-RD-18
A588-GN-18
200-BK-18
607-PK
615-YL
151-GN-18
150-RD-18
200-BK
CAB/CHASSIS
LAMP RELAY 2
111-4871
A588-GN-18
K909-BU-18
6
1
115-RD-14
115-RD-14
2
BB
189-RD-14
114-RD-18
5
4
5
60A
320-RD-18
791-RD-18
786-GN-18
786-GN-18
154-RD-18
615-YL
200-BK-18
149-PU
616-BU
6
3
12
2
1
7
11
8
9
616-BU
CHASSIS
LAMP
135-0550
B
200-BK
607-PK
200-BK
200-BK-18
430-BU-18
L16
HORN RELAY
111-4871
BOOM LAMP
RELAY
111-4871
10
A770-PK-18
322-GY-18
114-RD-18
124-RD-14
112-PU-18
110-RD-14
320-RD-18114-RD-18
A588-GN-18
124-RD-14
K909-BU-18
K909-BU-18
30A
BAT. BREAKER
139-4724
579-BR-14
150-RD-18
151-GN-18
200-BK-18
616-BU
DD
310-PU-18
149-PU
786-GN-18
A718-PU-18
11
320-RD-18
322-GY-18
114-RD-18
BUS-BAR
149-5068
3
1
2
4
BUS-BAR
149-5068
7
200-BK-18
791-RD-18
HEATER
CONT UNIT
134-3283
J703-PK-18
J703-PK-18
STARTER
CONT RELAY
094-2080
L975-PK-18
200-BK-18
487-OR-18
200-BK-18
322-GY-18
616-BU
CHASSIS
LAMP
135-0550
ATCH
BOOM LAMP
5I-8250
L
607-PK
607-PK607-PK
HEATER RELAY
9X-8124
MOTOR
A588-GN-18
2
1
HORN
7Y-3920
124-RD-14
110-RD-14
607-PK
615-YL
12
L
GND
S
P
YL
BK
WH/BU
WH/YL
J703-PK-18
L3
200-BK-18
403-GN-18
327-PK-14
168-RD-14
200-BK-18
308-YL-18
308-YL-18
SS
UU
200-BK-18
L17
L17
L17
308-YL-18
L10
F
147-PU
L4
L1
403-GN-18
309-GY-18
CHECK TERM.
2
1
307-OR-18
RELAY
GND
L975-PK-18
TEMP.
115-RD-14
403-GN-18
MAIN RELAY
3T-0376
R
WH/GN
309-GY-18
L908-OR
L909-BU
235-BK
E
D
C
B
A
235-BK
L909-BU
309-GY-18
CONNECTOR
L908-OR
L909-BU
L908-OR
235-BK
310-PU-18
200-BK-18
GROUND STRAP
134-3344
309-GY-18
403-GN-18
308-YL-18
110-RD-14
PP
NNXX
WW
FAN RELAY
111-4871
YY
NOTE B : USE WITH A/C UNIT.
200-BK-18
L21
L23
L23
L23
L23
CC
RELAY PANEL
J703-PK-18
NOTE A : NORMALLY OPEN BEFORE REFRIGERANT CHARGE.
EE
147-PU
DD
D-6
G-7
G-7
G-9
F-9
F-9
G-7
G-1
C-2
C-2
H-4
E-5
B-6
B-5
G-8
A-2
G-7
C-4
D-9
G-7
G-7
H-8
G-7
G-7
H-7
G-7
F-9
F-9
150-6952
150-6938
150-6934
134-3275
116-0080
134-3274
150-6936
134-8520
140-0920
134-3298
150-6948
150-6957
128-7337
128-7336
153-2518
153-2517
150-6937
153-2516
153-2455
150-6943
150-6942
150-6940
150-6944
150-6941
150-6939
150-6935
153-2566
153-2561
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
TO MACHINE STRUCTURE
KEY START SW ON
KEY START SW
KEY START SW
ON (KEY)
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
KEY START SW
KEY
KEY START SW
KEY SW.(ON)
CONN 89
CONN 87
CONN 86
CONN 84
CONN 69
CONN 70
CONN 94
CONN 56
CONN 53
CONN 54
CONN 55
CONN 82
CONN 73
CONN 71
CONN 61
CONN 59
CONN 60
CONN 58
CONN 64
CONN 67
CONN 99
CONN 62
CONN 63
CONN 100
CONN 68
CONN 83
CONN 49
CONN 79
CONN 80
CONN 81
CONN 96
CONN 25
CONN 91
CONN 92
CONN 93
CONN 90
CONN 95 CONN 97
CONN 26
CONN 13
CONN 7
CONN 6
CONN 8
CONN 5
CONN 4
CONN 3
CONN 85
CONN 2
CONN 1
CONN 22
CONN 65
CONN 50
CONN 48
CONN 47
CONN 46
CONN 45
CONN 40
CONN 29
CONN 18
CONN 20
CONN 19
CONN 17
CONN 44
CONN 43
CONN 42
CONN 33
CONN 34
CONN 35
CONN 36
CONN 37
CONN 30
CONN 39
CONN 38
CONN 41
CONN 52
CONN 51
CONN 75
CONN 11
CONN 12
CONN 74
CONN 101
CONN 72
CONN 102
CONN 23
CONN 24
CONN 77
CONN 32
CONN 31
CONN 16
CONN 15
CONN 78
CONN 14
CONN 21
CONN 88
CONN 27
CONN 28
CONN 76
CONN 98
CONN 57
150-6946 HE00
CONN 66
CONN 9
SERVICE
E57700
9 8 7 6 5 4 3 2 1
G
J
H
F
E
D
C
B
A
H
G
J
F
E
D
C
B
A
9 8 7 6 5 4 3 2 1
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
MONITORING SYSTEM CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CIRCUIT.
AIH CIRCUIT.
ENGINE/PUMP CONTROL CIRCUIT.
ALL DASHED LINES ARE ATTACHMENTS.
PRINTED AT 85% TO FIT INTO THE 36" x 21" FORMAT
Code Description of Problems
1301 Engine oil pressure is too low.
1302 Engine coolant temperature is too high.
1303 Hydraulic oil temperature is too high.
1304 Air filter is clogged.
1305 Battery voltage is not normal.
2201 Governor actuator feedback sensor circuit is open or shorted to battery voltage.
2202 Governor actuator feedback sensor circuit is shorted to body ground.
2301 Governor actuator feedback signal is not stable.
2302 Governor actuator feedback signal deviates.
2303 Governor actuator does not move.
2304 Calibration data error.
3201 Monitor RAM is not normal.
4101 Electric power supply to the controller is too much (43 volts).
4102 Over-current in proportional reducing valve.
4103 Proportional reducing valve circuit is open.
4105 Over-current in digital output (trenching solenoid).
4106 Over-current in digital output (fine control solenoid).
4107 Over-current in digital output (travel speed change solenoid).
4108 Over-current in digital output (travel alarm).
410A Over-current in digital output (swing brake solenoid).
4201 Engine speed is not normal.
4202 Engine coolant temperature sensor is shorted to body ground.
4203 Hydraulic oil temperature sensor is shorted to body ground.
4204 PWM sensor of pump delivery pressure is shorted to body ground.
4207 PWM sensor of pump delivery pressure is open in circuit.
420A Fuel sensor is shorted to body ground
420B Fuel sensor is open or shorted to battery voltage.
420C Electric power supply is to low (below 23 volts).
420D Electric power supply is to high (above 32 volts).
420E Engine speed dial is not in one of the 10 specified positions.
4301 Data mismatch 1 between alternator and speed sensor (alternator is abnormal).
4302 Data mismatch 2 between alternator and speed sensor (speed sensor is abnormal).
4303 Engine stalls.
A201 Monitor communication is not normal.
A202 Monitor takes too much time to respond to controller's signal.
A203 Communication is abnormal in controller.
Real Time Error Codes
A AA
1
2
325-PK-14
200-BK-14
T
This indicates that the component does not have a wire connected to ground. It is
grounded by being fastened to the machine.
This indicates that the component has a wire connected to it that is connected to ground.
105-9344
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
The circle indicates that the component has screw terminals and a wire can be disconnected from it.
Pin
Socket
Fuse
Component
Part Number
Pin or Socket
Number
Receptacle
Plug
Wire Gauge
Wire, Cable, or Harness
Assembly Identification
Wire Color
Normally closed switch that will open with an increase of a specific condition.
No circle indicates that the wire cannot be disconnected from the component.
Single Wire
Connector
Circuit Number
Identification
Ground
Connection
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Circuit Breaker
Symbol
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.
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 Symbols
Electrical Schematic Symbols And Definitions
1
1
2
2
Typical representation of a Sure-Seal
connector. The plug and receptacle
contain both pins and sockets.
Typical representation of a Deutsch
connector. The plug contains all
sockets and the receptacle contains
all pins.