SENR1920
December 1996
322B L and 322B LN Excavator
Electrical System
2ES1-UP
1ZS1-UP
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Air Inlet Heater
C-8 1
Sensor - A/C Photo
F-1 E
Alarm - Travel
G-9 2
Sensor - Air Inlet Heater Coolant Temp
C-9 1
Alternator
B-8 3
Sensor - Coolant Temperature
C-8 1
Assembly - Gov Motor
A-9 4
Sensor - Fuel Level
A-5 14
Assembly - Terminal Block
F-8 D
Sensor - Overload Warning Device
F-9 8
Batteries - 12VDC
H-8,l-8 D
Sensor - Pump Discharge Press
B-8 15
Breaker - Alternator
I-8 D
Solenoid - A/C Clutch
C-9 16
Breaker - Main
I-8 D
Solenoid - AC1 On/Off
I-6 17
Control - Engine/Pump
F-2 C
Solenoid - AC2 On/Off
I-6 17
Control - Overload Warning Device
F-6 A
Solenoid - Eng/Pump Control
A-7 18
Control - Wiper
D-1 A
Solenoid - Engine Shutdown
B-9 19
Controller - Aux Hydraulic
D-7 5
Solenoid - Fine Swing
E-8 17
Converter - Voltage
H-1 A
Solenoid - Flow Control (Prop)
I-5 17
Diode
G-7 D
Solenoid - Hammer 2
I-6 17
Diode - Main Relay
H-7 D
Solenoid - Hydraulic Lock
I-1 A
Fuses
I-4,3 B
Solenoid - Level Finish
A-7 18
Ground - Cab
B-5 6
Solenoid - R1/R2
I-6 17
Ground-Cab
D-1 E
Solenoid - Start Aid
H-9 20
Ground - Chassis
A-9 7
Solenoid - Travel Speed
A-7 18
Ground - Chassis
B-3 8
Solenoid - Trenching
A-7 18
Ground - Chassis
I-8 D
Switch -Air Cleaner Flow
H-9 21
Ground - Platform
G-2 B
Switch - Aux Hydraulic Control
D-3 C
Ground - Platform
H-1 9
Switch - Aux Pressure
I-6 17
Ground - Relay Panel
H-8 D
Switch - Backup EPR Valve
E-5 C
Ground Strap - Chassis to Platform
I-5 10
Switch - Backup Governor
D-5 C
Horn
A-2 8
Switch - Boom Raise Pressure
D-8 17
Joystick
F-2 C
Switch - Coolant Level
H-9 20
Joystick
I-5 B
Switch - Disconnect
I-8 D
Lighter
E-1 E
Switch - Engine Oil Level
A-8 4
Meter - Service
F-1 E
Switch - Engine Oil Press
B-9 16
Monitor
F-1 E
Switch - Fine Swing Control
D-4 C
Motor - Washer
I-9 D
Switch - Foot Pedal LH
H-5 A
Motor - Lower Wiper
H-1 9
Switch - Foot Pedal RH
H-5 A
Motor - Starter
B-9 7
Switch - Hydraulic Oil Filter
A-5 13
Motor - Upper Wiper
F-1 6
Switch - Hydraulic Oil Level
A-5 13
Pickup - Engine Speed
B-9 11
Switch - Implement Pressure
D-8 17
Pump - Refueling
A-2 12
Switch - Key
F-2 C
Radio - 12VDC
I-3 A
Switch - Neutral Start Limit
I-1 B
Relay - Boom Lamp
I-7 D
Switch - Overload Warning Device
D-4 C
Relay - Cab/Chassis Lamp
I-7 D
Switch - Pressure
I-5 17
Relay - Heater
F-7 D
Switch - Proximity
I-6 17
Relay - Horn
I-7 D
Switch - Refrigerant Low Press
C-9 16
Relay - Hydraulic Lock Solenoid
I-7 D
Switch - Refueling
A-5 22
Relay - Main
G-7 D
Switch - Refueling Start (NO)
A-4 12
Relay - Neutral Start
F-7 D
Switch - Refueling Stop (NC)
A-4 12
Relay - Refueling Power
A-3 12
Switch - Seat Heater
D-4 C
Relay - Refueling Start
A-3 12
Switch - Start Aid
D-5 C
Relay - Refueling Stop
A-3 12
Switch - Start Aid Coolant Temp
B-9 3
Relay - Start
F-8 D
Switch - Throttle Position
E-2 C
Relay - Timer
E-7 D
Switch - Travel Pressure
D-8 17
Resistor - Backup
I-8 D
Switch Panel
F-2 C
Resistor - Timer Relay
E-7 D
Unit - A/C
H-4 23
Sender- Hydraulic Oil Temp
A-5 13
Unit - Air Inlet Heater Control
I-7 D
Machine locations are repeated for components located close together.
A = Located in operator’s compartment. D = Located on relay panel area.
B = Located in operator’s left console area. E = Located in dash area.
C = Located in operator's right console area F = Located under cab floor plate
Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 A-9 4
CONN 2 F-9 D
CONN 3 F-9 D
CONN 4 G-9 D
CONN 5 G-9 D
CONN 6 Service Connector H-8 D
CONN 7 H-8 D
CONN 8 G-8 D
CONN 9 G-8 D
CONN 10 G-8 D
CONN 11 F-8 D
CONN 12 A-6 13
CONN 13 C-6 22
CONN 14 C-5 22
CONN 15 C-5 22
CONN 16 C-5 F
CONN 17 C-5 F
CONN 18 F-5 C
CONN 19 F-5 C
CONN 20 F-5 C
CONN 21 F-5 C
CONN 22 F-5 C
CONN 23 F-4 C
CONN 24 F-4 C
CONN 25 G-6 F
CONN 26 G-6 F
CONN 27 G-5 F
CONN 28 H-6 17
CONN 29 H-5 17
CONN 30 I-5 17
CONN 31 H-4 B
CONN 32 H-4 B
CONN 33 H-4 B
CONN 34 H-3 B
CONN 35 H-3 B
CONN 36 H-3 B
CONN 37 A-4 6
CONN 38 A-4 6
CONN 39 B-3 6
CONN 40 B-3 8
CONN 41 B-2 23
CONN 42 C-2 F
CONN 43 C-2 F
CONN 44 C-2 F
CONN 45 D-2 F
The connectors shown in this chart are for harness to harness connectors.
Connectors that join a harness to a component are generally located at or near the
component. See the Component Location Chart.
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
Related Electrical Service Manuals
Form Number
Alternator: (9W-3043) SENR4252
Engine/Pump Control SENR9291
Starting And Charging SENR9292
Starting Motor: (6V-5821) SENR3581
Starting Motor: (104-7040)
Consist: 6V-5720
Consist: 106-8557
SENR3581
SENR3859
Title
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
102-8016 Resistor - Backup 47.0 ± 2.35
7Y-8242 Resistor - Timer Relay 47.0 ± 4.7
3E-1906 Solenoid - A/C Clutch 17.6 ± 0.6
121-1491
Solenoid - A/C 1
A/C2
Hydraulic Lock
Swing Brake
Travel Speed
32.0±3.2
111-9916 Solenoid - Engine/Pump ControlFlow Control 11.7 ± 1.2
8C-3663
Solenoid - Engine Shutdown
Start (Latch) Coil
Stop (Unlatch) Coil
1.55 ± 0.15
10.3 ± 1.03
107-7056 Solenoid - Fine Swing 34 ± 0.5
121-1490 Solenoid - Level FinishTrenching 32.0 ± 3.2
3E-6332 Solenoid - Start Aid 6.0
¹ At room temperature unless otherwise noted.
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
3E-6449 Start Aid Coolant Temperature
38.0 ± 3.0°C
(100.4 ± 5.4°F)
27 °C MIN
(80.6 °F MIN)
Normally Closed
3E-6455 Engine Oil Pressure
90 ± 21 kPa
(13 ± 3.0 psi)
70 ± 21 kPa
(10 ± 3.0 psi)
A-B, Normally Open
A-C, Normally Closed
106-0179
Auxiliary Pressure
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
114-5333 A/C High/Low Pressure
275 to 1750 kPa¹
(40 to 255 psi)
-
-
Normally Open²
131-9203 Auxiliary Pressure
3500 kPa MAX
(507.6 psi)
3000 ± 150 kPa
(435.1 ± 21.8 psi)
A-B Normally Open
A-C Normally Closed
² Contact position at the contacts of the harness connector.
¹ A hysteresis band exists: with increasing pressure the closed condition can be maintained up to 2800 kPa (405 psi), with decreasing pressure the closed
condition can be maintained down to 170 kPa (25 psi).
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Accessory Circuits (Continued)
101 RD
Battery (+)
513 OR
A/C Compressor/Refrigerant Press Sw
103 RD
Dome Lamp
519 PK
Thermostat to Refrigerant Press Sw
105 RD
Key Switch
524 BU
Left Wiper Motor Low
107 RD
Engine Shutdown
546 BU
Aux Hyd - Rotate CW
109 RD
Alternator Output (+24V)
547 OR
Aux Hyd - Rotate CCW
111 RD
Timer Relay Output 1
548 GY
Aux Hyd - Open
112 PU
Main Power Relay Output
549 PK
Aux Hyd - Close
113 OR
Operator Monitor Panel B (+) Switched
575 YL
Wiper - Aux (Park)
114 RD
Warning Horn (Forward)
576 PK
Wiper - Aux (Lo)
115 PK
Aux Circuit
578 BU
Washer - Aux
118 GY
Aux Circuit
585 YL
Aux Pilot Man AC2
118 YL
Aux Circuit
586 BR
Aux Hyd - Close
120 YL
Aux Circuit
590 GY
Wiper Sw To Intermittent Module
124 GN
Blower / AC Power
A537 PK
Seat Heater
129 BU
Aux Circuit
A586 OR
Wiper Sw To Wiper Cont
135 BU
Aux Circuit
A587 YL
Power Window Cont to Safety Sol Relay
139 OR
Radio Memory
A588 GN
Safety Sol Relay To Sol
140 BU
Aux Circuit
C537 GN
A/C Photo Sensor (+) Sig
147 PU
Aux Circuit
C538 OR
A/C Photo Sensor (-) Sig
149 PU
Aux Circuit
Lighting Circuits
150 RD
Hyd Lock
607 PK
Flood Lamp - Front
151 GN
Aux Circuit
615 YL
Cab Flood Lamp
152 BU
Aux Circuit
616 BU
Boom / Bucket Flood Lamp
154 RD
Neut Start Relay
633 BU
Attach Lighting Circuit
168 RD
Aux Circuit
638 WH
Attach Beacon Relay
172 GN
Aux Circuit
Control Circuits
172 RD
EngGov
763 BU
Torque Converter Sw
176 YL
Aux Circuit
786 GN
Engine Speed Cont - Hi Press Sw
177 RD
Main Power - Unswitched
788 YL
Engine Speed (+)
180 GN
Aux Circuit
791 PK
Eng Speed Control Lo Sol
185 YL
Aux Circuit
A718 PU
Start Aid Coolant Sensor Signal
189 RD
Timer Relay Output 2
A755 PK
Throttle Sw #1
191 WH
Aux Circuit
A756 BU
Throttle Sw #2
196 BU
Aux Circuit
A757 WH
Throttle Sw #3
198 PK
Aux Circuit
A758 BR
Throttle Sw #4
Ground Circuits
A761 PU
Electronic Pump Cont Throttle Ground
200 BK
Main Chassis
A762 PU
Electronic Pump Cont Engine Speed Ground
201 BK
Operator Monitor Panel
A768 BU
Pump Control Valve #1 (+)
210 BK
Converter Output (24/12 Volt)
A769 GY
Pump Control Valve #2 (-)
235 BK
E/P Ctrl Gnd
A770 PK
Electronic Pump Cont Bypass Sw to Resistor
Basic Machine Circuits
A771 PU
Float Sw
301 BU
Starter No. 1 Solenoid
F771 OR
Backup Sw
304 WH
Starter Relay No. 1 Output
F772 WH
Backup Sw
306 GN
Starter Rly Coil to Neut Start Sw or Key Sw
F773 OR
Governor Accel
307 OR
Key Switch to Neutral Start Switch
F774 WH
Governor Decel
308 YL
Main Power Relay Coil
8630 BU
Attach Beacon Switch to Relay
309 GY
Alt Regulator Term
877 YL
Glow Plug Magnetic Sw To Glow Plug
310 PU
Start Aid Switch to Start Aid Solenoid
A847 YL
Med Press Sol R2
311 WH
Start Aid Solenoid to Temperature Switch
A848 PK
Med Press Sol R1
320 OR
Horn Relay Coil to Sw
A849 OR
Flow Control Sol
321 BR
Backup Alarm / Travel Alarm
A850 WH
Flow Control Sol
322 GY
Warning Horn
950 BR
Hammer Sw C
323 WH
Fuel Pump Power
951 PK
Hammer Sol C
325 PK
Fuel Pump Relay Cut-out
952 OR
Press Switch
326 RD
Engine Shutdown
954 GN
Hammer Sw A
329 YL
Fuel Pump to Sw
961 BR
Selector Sw
365 YL
Fuel Pump Relay to Switch
K904 GN
Pump Discharge - Signal
386 PK
Air Shutoff Sol Enable
K905 RD
Pump Discharge -
Monitoring Circuits
K906 GN
Swing Brake Sol - Signal
403 GN
Alternator (R) Terminal.
K907 BU
Swing Brake Sol -(+) B
405 GY
Operator Monitor Oil Pressure (Lo Setting)
K909 BU
Backup Sw - (+) B
412 BU
Coolant Flow SW
K911 PK
E/P Controller - RS485 (+)
430 BU
Opr Mon Air Filter
K912 GN
E/P Controller - RS485 (-)
487 OR
Hyd Oil Flow Sw
K915 GN
Fine Swing Sw - E/P Controller
491 PK
Hyd Oil Temp Sensor
K973 BR
E/P Controller
492 GY
Coolant Temp Sensor Signal
K974 PU
E/P Controller
495 GN
Fuel Level Signal
K975 WH
E/P Controller
496 WH
Opr Mon Panel Hyd Oil Level
K976 OR
E/P Controller
A424 WH
Press. Transducer 1 Signal
K997 BU
(+) V Sensor
A425 YL
Press. Transducer 2 Signal
L908 OR
Controller RS-232C TX
A495 GY
Alternator (R) Terminal #2
L909 BU
Controller RS-232C RX
C468 BU
Engine Oil Level
L968 OR
Electronic Pump Cont PS Valve (-)
Accessory Circuits
L969 WH
Electronic Pump Cont PS Valve (+)
500 BR
Wiper - Front (Park)
L970 GY
Electronic Pump Cont To Switch Common
501 GN
Wiper - Front (Lo)
L971 GN
Elec Pump Control to Travel Pressure Sw
508 PU
Washer - Front
L972 BU
Low Idle Sw
508 PU
Radio Speaker - Left
L973 GN
Fine Swing Cont Relay To Sol Valve
509 WH
Radio Speaker - Left (Common)
L974 GN
Electronic Pump Ctrl Boom Raise Press Sw
511 BR
Radio Speaker - Right
L975 PK
Start Aid Cont Lamp 1 Output
512 GN
Radio Speaker - Right (Common)
L976 GN
Excavator Fuel Pump Switch
L977 YL
Trenching Sal
L978 GY
Level Finish Sol
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.
A
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
7
F
5
A
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
7
F
5
Machine Harness Connector And Component Locations
1
1
©
1996 Caterpillar
All Rights Reserved
Printed in U.S.A.
200-BK-18
K906-GN-18
200-BK-18
L971-GN-18
A771-PU-18
L974-GN-18
K906-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
L971-GN-18
A771-PU-18
L974-GN-18
200-BK-18
200-BK-18
200-BK-18 2
1
BOOM RAISE
PRESS SW
106-0180
1
2
B
B
2
1
B
IMPLEMENT
PRESS SW
106-0179
TRAVEL
PRESS SW
106-0179
K976-OR-18
K975-WH-18
K974-PU-18
K973-BR-18
A755-PK-18
A756-PU-18
A757-WH-18
A758-BR-18
546-BU-18
548-GY-18
549-PK-18
547-OR-18
952-OR-18
191-WH
961-BR-18
A849-OR-18
A850-WH-18
951-PK-18
950-BR-18
A847-YL-18
A848-PK-18
954-GN-18
585-YL-18
200-BK
2
5
22
16
10
4
21
15
9
3
24
20
19
6
MEDIUM PRESS SOL R2
18
11
17
23
12
1
7
8
13
14
THROTTLE POS SW
NN
E/P CONTR
E/P CONTR
E/P CONTR
E/P CONTR
THROTTLE POS SW
AUX PILOT MAN AC1
FLOW CONTROL SOL
RH - JOYSTICK
GROUND
AUX PILOT MAN AC2
PROX SW
MEDIUM PRESS SOL R1
LH - JOYSTICK
LH - JOYSTICK
HAMMER 2 SPEED SOL
FLOW CONTROL SOL
ROCKER SW CSL
RH - JOYSTICK
PRESSURE SW
AUX CKT POWER SUPPLY
THROTTLE POS SW
THROTTLE POS SW
SWING
BRAKE SOL
121-1491
1
2
B
147-PU-18
149-PU
140-BU
105-RD
107-RD
114-RD-18
147-PU-18
200-BK-18
306-GN-18
2
1
A718-PU-18
386-PK-18
309-GY-18
616-BU
322-GY-18
607-PK-18
306-GN-18
304-WH-8
877-YL-4
101-RD-4
147-PU-18
F774-WH-18
F773-OR-18
A761-PU-18
K904-GN-18
430-BU-18
K906-GN-18
A771-PU-18
763-BU-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
519-PK-18
321-BR-18
412-BU-18
487-OR-18
310-PU-18
107-RD
103-RD-18
168-RD-14
140-BU
200-BK
112-PU-6
196-BU
K909-BU-18
A587-YL-18
A588-GN-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
786-GN-18
149-PU
320-OR-18
114-RD-18
A770-PK-18
200-BK
140-BU
149-PU
147-PU-18
105-RD
107-RD
114-RD-18
191-WH-14
115-PK-14
120-YL
118-GY
124-GN-14
129-BU-18
103-RD-18
403-GN-18
A771-PU-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
487-OR-18
235-BK-14
200-BK-14
586-BR-18
786-GN-18
791-PK-18
308-YL-18
307-OR-18
578-BU-18
K906-GN-18
A768-BU-18
A769-GY-18
A770-PK-18
F774-WH-18
F773-OR-18
K909-BU-18
310-PU-18
A588-GN-18
A588-GN-18
575-YL-18
152-BU-18
576-PK-18
107-RD
196-BU
320-OR-18
151-GN-18
129-BU-18
118-GY
512-GN-18
511-BR-18
509-WH-18
508-PU-18
519-PK-18
124-GN-18
113-OR-18
185-YL-18
105-RD
519-PK-18
124-GN-18
124-GN-18
124-GN-14
124-GN-14
113-OR-18
185-YL-18
105-RD
129-BU-18
118-GY
124-GN-14
403-GN-18
403-GN-18
403-GN-18
200-BK-18
200-BK-18
590-GY-18
501-GN-18
A586-OR-18
786-GN-18
791-PK-18
113-OR-18
308-YL-18
307-OR-18
105-RD
A758-BR-18
A755-PK-18
576-PK-18
575-YL-18
578-BU-18
124-GN-18
K915-GN-18
586-BR-18
310-PU-18
A769-GY-18
A768-BU-18
K906-GN-18
185-YL-18
K909-BU-18
K907-BU-18
A770-PK-18
F772-WH-18
F774-WH-18
F773-OR-18
F771-OR-18
200-BK-18
200-BK-18
615-YL-18
235-BK-14
615-YL
615-YL
235-BK-18
235-BK-18
308-YL-18
A758-BR-18
A755-PK-18
K912-GN-18
K911-PK-18
K915-GN-18
F771-OR-18
F772-WH-18
K907-BU-18
403-GN-18
200-BK
487-OR-18
A761-PU-18
K904-GN-18
496-WH-18
430-BU-18
495-GN-18
491-PK-18
492-GY-18
405-GY-18
321-BR-18
C468-BU-18
412-BU-18
763-BU-18
A762-PU-18
788-YL-18
A771-PU-18
A586-OR-18
501-GN-18
590-GY-18
200-BK-18
200-BK-18
200-BK
A847-YL-18
A848-PK-18
951-PK-18
147-PU-18
140-BU
149-PU
168-RD-14
114-RD-18
151-GN-18
320-OR-18
954-GN-18
196-BU
107-RD
112-PU-6
114-RD-18
168-RD-14
112-PU-14
112-PU-14
112-PU-14
147-PU-18
200-BK-18
140-BU
149-PU
2
168-RD-14
114-RD-18
151-GN-18
320-OR-18
3
200-BK-14
196-BU
107-RD
112-PU-14
112-PU-14
112-PU-14
112-PU-14
112-PU-14
112-PU-14
1
L970-GY-18
A755-PK-18
961-BR-18
191-WH-14
A587-YL-18
198-PK-18
546-BU-18
547-OR-18
548-GY-18
549-PK-18
A756-PU-18
A757-WH-18
A758-BR-18
1
JJ
A
2
3
4
1
4
5
6
7
8
9
10
11
JJ
FLOW CONT
12V SW OUT
172-GN-18
185-YL18
GND
196-BU
LIGHT IN (DC24V)
8
7
6
5
4
3
2
151-GN-18
1
200-BK
+24V BAT IN MEM
LIGHT OUT (DC12V)
+12V MEM OUT
+24V SW IN
GND
200-BK-18
320-OR-18
120-YL
200-BK
615-YL-18
K909-BU-18
196-BU
A587-YL-18
A588-GN-18
135-BU
151-GN-18
210-BK
308-YL-18
307-OR-18
139-OR-18
791-PK-18
615-YL
633-BU-18
RELAY PANEL
786-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
103-RD
200-BK-18
168-RD-12
309-GY-18
308-YL-18
A718-PU-18
616-BU
149-PU
786-GN-18
322-GY-18
320-OR-18
196-BU
A587-YL-18
A588-GN-18
A
151-GN-18
200-BK-18
200-BK-18
200-BK-18
607-PK-18
615-YL
A
791-PK-18
A770-PK-18
JJ
200-BK-18
200-BK-18
149-PU
200-BK-18
K909-BU-18
307-OR-18
12
386-PK-18
200-BK-18
K909-BU-18
200-BK-18
200-BK-18
L37
4
306-GN-18
K976-OR-18
306-GN-18
3
1
2
4
308-YL-18
MM
200-BK-18
306-GN-18
200-BK-18
10A
HORN
K909-BU-18
A770-PK-18
791-PK-18
A
615-YL
607-PK-18
200-BK-18
151-GN-18
A588-GN-18
A587-YL-18
196-BU
320-OR-18
DOME LAMP
322-GY-18
786-GN-18
149-PU
616-BU
KEY SW
A718-PU-18
REFUEL. PUMP
BOOM LAMP
FINE SWING
306-GN-18
310-PU-18
200-BK-18
308-YL-18
10A
10A
30A
10A
10A
10A
308-YL-18
A770-PK-18
K909-BU-18
10A
615-YL
607-PK-18
791-PK-18
115-PK-18
115-PK-18
151-GN-18
200-BK-18
200-BK-18
NN
QQ
103-RD
SHUTDOWN
A588-GN-18
616-BU
149-PU-18
149-PU-18
149-PU
322-GY-18
320-OR-18
LUBRICATOR
8
6
7
111-RD-14
4
2
5
308-YL-18
1
3
K909-BU-18
307-OR-18
200-BK-18
J
J
200-BK-18
386-PK-18
386-PK-18
112-PU-14
200-BK-18
S
CONVERTER
1310327
12V 7A
K975-WH-18
112-PU-14
112-PU-14
K974-PU-18
K973-BR-18
3
149-PU
2
140-BU
L53
L52
200-BK-18
200-BK
200-BK-14
PROX SW
3T-3132
AC2
(ON/OFF)
121-1491
SOL
R1/R2
125-8075
F/C SOL
(PROP.)
111-9916
AUX PRESS
SW
131-9203
147-PU-18
L17
L23
951-PK-18
200-BK-18
NN
HAMMER 2
SOL (ON/OFF)
116-3413
A
H
G
2
549-PK-18
H
G
I
2
1
112-PU-14
1
548-GY-18
547-OR-18
546-BU-18
191-WH-14
961-BR-18
L970-GY-18
200-BK-14
151-GN-18
L970-GY-18
112-PU-14
185-YL-18
200-BK-14
952-OR-18
JJ
112-PU-14
112-PU-14
112-PU-14
200-BK-18
311-WH-18
NN
8
7
6
5
4
3
2
1
1
2
311-WH-18
310-PU-18
JJ
JJ
ATCH-FOOT
SWITCH
PEDAL-RH
ATCH-FOOT
SWITCH
PEDAL-LH
1
2
3
4
5
6
7
8
JJ
NN
A758-BR-18
A757-WH-18
A756-PU-18
A755-PK-18
K973-BR-18
K974-PU-18
K975-WH-18
K976-OR-18
B
QQ
954-GN-18
C
1
2
2
1
200-BK-18
585-YL-18
200-BK-18
A848-PK-18
A847-YL-18
NN
200-BK-18
NN
NN
PP
AC1
(ON/OFF)
121-1491
PP
A849-OR-18
1
2
NN
1
2
950-BR-18
200-BK-18
A850-WH-18
200-BK-18
L970-GY-18
C
QQ
B
A
196-BU
140-BU
107-RD
114-RD-18
105-RD
168-RD-14
149-PU
191-WH-14
129-BU-18
C468-BU-18
118-GY
124-GN-14
120-YL
11
12
1
2
3
4
5
6
7
8
9
10
1
2
321-BR-18
J
A
3
7
200-BK-18
9
1
11
5
A761-PU-18
BK
WH
8
9
6
5
12
11
J
A
4
10
10
2
9
8
12
7
6
11
1
5
2
1
4
3
2
1
200-BK-18
6
1
2
3
5
4
A
J
F773-OR-18
F774-WH-18
200-BK-18
3
7
200-BK-18
ATCH AUX SWATCH AUX SW
549-PK-18
198-PK-18
12
MULTISWITCH JOSTICK
122-4828
RIGHT SW
548-GY-18
11
ATCH START AID
COOLANT TEMP SW.
3E-6449
2
1
B
ATCH START
AID SOL
3E-6332
T °
CONT O.W.D.
132-5096
586-BR-18
191-WH
A424-WH-18
6
1
3
5
AIH COOLANT
TEMP SENSOR
125-4812
1
B
2
1
GROUND
ON(KEY)1
2
AIR CLEANER SW
109-9330
2
7
PUMP DISCHARGE
PRESS SENSOR
106-0178
SIGNAL
GROUND
+B
BK-18
BR-18
YL-18
B
C
AIR HEATER
107-9652
8
9
4
T °
B
J
GND
F/B
+B
ACCEL
B B
B
BK-00
C
2
1
DECEL
6
A
B
B
MOTOR AS
GOV
132-7778
A
A
HH
B
C
B
BB
C
C
C
C
C
KEY
198-PK-18
REFRIGERANT
LOW PRESS SW
114-5333(NOTE A)
ALTERNATOR
9W-3043
ATCH AUTO
LUBRICATION PUMP
127-5264
ATCH
TRAVEL ALARM
3E-7738
ENG OIL
LEVEL SW
111-4759
1
2
2
2
1
B
B
COOLANT
LEVEL SW
096-0744
1
2
T °
COOLANT TEMP
SENSOR
4I-5394
MOTOR
C
B
BATMTR
SG
B
STARTER
MOTOR
104-7040
B-
WASHER
7T-8890
2
1
ENG
SHUTDOWN SOL
8C-3663
ENG OIL
PRESS SW
3E-6455
CHASSIS
BK-18
RD-18
ENG SPEED
PICKUP
6V-2455
9
549-PK-18
8
7
11
3
6
MM
BATTERY
3T-5760
POS
NEGNEG
POS
A
C
B
A
BU-18
B+
RD
ALT
A/C CLUTCH
SOL
3E-1906
MOTOR
ATCH
BATTERY
3T-5760
(NOTE C)
548-GY-18
198-PK-18
200-BK-18
K904-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
A769-GY-18
A768-BU-18
320-OR-18
763-BU-18
200-BK-18
200-BK-18
200-BK-18
1
308-YL-18
114-RD-18
308-YL-18
A768-BU-18
A769-GY-18
308-YL-18
307-OR-18
101-RD-4
304-WH-8
547-OR-18
311-WH-18
403-GN-18
113-OR-18
309-GY-18
492-GY-18
A718-PU-18
877-YL-4
A762-PU-18
788-YL-18
405-GY-18
198-PK-18
F774-WH-18
F773-OR-18
A761-PU-18
546-BU-18
C468-BU-18
198-PK-18
113-OR-18
113-OR-18
200-BK
A587-YL-18
A770-PK-18
200-BK-4
200-BK-18
200-BK-6
200-BK-4
A718-PU-18
200-BK-18
492-GY-18
200-BK-18
309-GY-18
403-GN-18
200-BK-6
200-BK-18
B
405-GY-18
788-YL-18
A762-PU-18
200-BK-18
304-WH-8
RD-00
RD-00
200-BK-4
200-BK-6200-BK-10
200-BK-18
200-BK-18
200-BK-18200-BK-18
200-BK-18
200-BK-18
301-BU-10
513-OR-18
200-BK-18
200-BK-10
301-BU-10
405-GY-18
200-BK-18
788-YL-18
A762-PU-18
308-YL-18
200-BK-18
K909-BU-18
1
2
B
6
101-RD-4
A
308-YL-18
308-YL-18
112-PU-6
H
2
3
A587-YL-18
A588-GN-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
308-YL-18
786-GN-18
149-PU
320-OR-18
114-RD-18
A770-PK-18
K909-BU-18
196-BU
AE 132-1827 A-4
200-BK
113-OR-18
POS
NEG NEG
POS
4
2
3
1
113-OR-18
L17
ATCH-AUX CKT
ATCH-AUX CKT
200-BK-14
519-PK-18
124-GN-14
K909-BU-18
308-YL-18
M M
F
E
D
F
C
B
A
200-BK
615-YL
J
200-BK-18
Y/G
Y/W
4
9 8 7
9 8 7
6 5 4
6 5 4
3 2
1
F
E
D
3 2
1
C
B
A
BK-00
304-WH-8
308-YL-18
A718-PU-18
386-PK-18
309-GY-18
616-BU
322-GY-18
607-PK-18
DISCONNECT SW.
7N-0718
7N-0719(NOTE C)
ALT BREAKER
9S-0174
OUT 1
+B
IN 2
IN 1
GND
OUT 2
UU
ZZ
YY
LL
C538-OR-18
YY
UU
VV
XX
WW
5
4
6
3
1
2
BACKUP
RESISTOR
102-8016
12
1
HYD LOCK SOL RELAY
111-4871
5
3
4
6
2
1
7
8
9
10
11
12
200-BK
8
2
10
11
3
4
9
TIMER RELAY
111-4870
7
MAIN RELAY
3T-0376
CAB/CHASSIS LAMP RELAY
111-4871
6
578-BU-18
XX
5
4
5
60A
NEUTRAL
START RELAY
111-4871
200-BK-18
200-BK
A
START RELAY
125-1302
6
3
12
2
1
7
11
8
9
HORN RELAY
111-4871
BOOM LAMP RELAY
111-4871
10
200-BK
1
AUX. CKT
DIODE
121-1022
DIODE
121-1022
ATCH
LL KK
NOTE F : NOT USE WITH FINE SWING CONT. SW.
2
2
1
2
KEY SW.(ON)
1
3
2
4
HEATER
CONT UNIT
104-3204
HEATER
RELAY
116-0114
RESISTOR
7Y-8242
KK
ZZ
CHECK TERM.
RELAY
KEY SW.(START)
GND
INDICATOR
REGULATOR
TEMP.
168-RD-18
5
4
PP 133-0958
MM 111-4846 I-3
177-RD-8
6V-5821
(NOTE C)
177-RD-8
200-BK-18
A757-WH-18
A756-PU-18
A757-WH-18
A756-PU-18
B
C
177-RD-8
K905-RD-14
A756-PU-18
ATCH BEACON RELAY
109-RD-6
147-PU-18
L975-PK-18
L975-PK-18
L975-PK-18
L975-PK-18
L975-PK-18
L973-GN-18
L977-YL-18
L978-GY-18
L974-GN-18
L971-GN-18
L977-YL-18
L978-GY-18
L969-WH-18
L968-OR-18
L973-GN-18
L972-BU-18
L973-GN-18
487-OR-18
200-BK-18
L971-GN-18
L977-YL-18
L974-GN-18
L978-GY-18
ENG/PUMP CONT
119-0612
L971-GN-18
L970-GY-18
L977-YL-18
L974-GN-18
L969-WH-18
1
200-BK
L909-BU-18
L908-OR-18
235-BK-18
506-PU
L972-BU-18
168-RD-12
L970-GY-18
L971-GN-18
L978-GY-18
L975-PK-18
763-BU-18
L977-YL-18
L974-GN-18
L978-GY-18
L969-WH-18
L968-OR-18
L972-BU-18
L977-YL-18
495-GN-18
8630-BU-18
306-GN-18
200-BK-18
306-GN-18
306-GN-18
200-BK-18
615-YL-18
306-GN-18
200-BK-18
AD 128-8936 I-8
NOTE H : USE WITH A/C UNIT
A
365-YL-18
638-WH
152-BU
152-BU
638-WH
8630-BU-18
638-WH
306-GN-18
638-WH
638-WH
200-BK
177-RD-14
177-RD-14
638-WH
1
2
200-BK
638-WH
ATCH ROTATING
BEACON LAMP
177-RD-14
1
4
3
2
177-RD-14
177-RD-14
177-RD-14
177-RD-14
306-GN-18
103-RD-18
103-RD-18
103-RD
103-RD
310-PU-18
325-PK-18
310-PU-18
310-PU-18
877-YL-4101-RD-4
177-RD-14
152-BU-18
177-RD-6
638-WH
152-BU
177-RD-14
386-PK-18
152-BU
A
A
A
A
326-RD
152-BU-18
152-BU
496-WH-18
A768-BU-18
200-BK-18
BK
YL
172-RD-18
B
BA
A
329-YL-18
115-PK-14
GG (NOTE C)
RD-00
RD-00
177-RD-14
B
HYD OIL
FILTER SW
116-3660
GROUND
SIGNAL
+B
C
B
A
177-RD-14
BB
B
BBBB
177-RD-14
177-RD-14
177-RD-14
177-RD-14
177-RD-14
177-RD-14
200-BK
578-BU-18
177-RD-14
177-RD-14
177-RD-14
177-RD-14
112-PU-6
FINE SWING
SOL
107-7056
2
12
1
ENG/PUMP CONT
SOL
111-9916
LEVEL FINISH
SOL
121-1490
AE
TRENCHING SOL
121-1490
TRAVEL SPEED
SOL
121-1491
N
2
1
1
2
HYD OIL
TEMP SENDER
4I-5394
2
1
FUEL LEVEL
SENSOR
105-9911
ATCH
REFUELING SW
5C-6108
2
1
HYD OIL
LEVEL SW
111-4760
2
T °
1
B
152-BU-18
8630-BU-18
C537-GN-18
8630-BU-18
VVAD
AD
329-YL-18
168-RD-14
177-RD-6
109-RD-6
101-RD-6
172-RD-18
196-BU
111-RD-14
168-RD-14
A757-WH-18
308-YL-18
308-YL-18
12
101-RD-6
147-PU-18
101-RD-6
MAIN BREAKER
9S-0174
A
A
147-PU-18
118-GY
124-GN-14
12
4
10
2
ATCH ROTATING
BEACON SW
6
112-PU-14
615-YL-18
615-YL-18
200-BK-14
200-BK-14
K912-GN-18
K911-PK-18
H
403-GN-18
185-YL-18
615-YL-18
K911-PK-18
200-BK-18
A586-OR-18
ATCH
REFUELING
POWER RELAY
3T-0376
590-GY-18
501-GN-18
A755-PK-18
A757-WH-18
A756-PU-18
A758-BR-18
L972-BU-18
200-BK-14
103-RD-18
118-GY
615-YL-18
200-BK-14
615-YL
200-BK-18
112-PU-14
112-PU-14 180-GN
590-GY-18
103-RD-18
8630-BU-18
8
615-YL-18
103-RD-18
509-WH-18
200-BK-18
511-BR-18
113-OR-18
129-BU-18
512-GN-18
200-BK-18
308-YL-18
F771-OR-18
F772-WH-18
L969-WH-18
L968-OR-18
K915-GN-18
K907-BU-18
115-PK-14
198-PK-18
120-YL
191-WH-14
308-YL-18
200-BK-18
2
5
4
191-WH-18
1
6
3
10A
10A
15A
10A
10A
10A
A A
ENG GOV
15A
7
8
1
6
5
4
3
2
PLATFORM
CHASSIS
GROUND STRAP
7G-1060
308-YL-18
ANTENNA CABLE
111-4846
CAB/CHASSIS LAMP
WASHER/WIPER
H
A425-YL-18
H
CIGAR LIGHTER
A/C /HEATER
FUSE
10A 9W-1442
15A 9W-1441
30A 8T-9636
BACKUP
15A
10A
10A
10A
10A
10A
10A
15A
E/P CONT
HYD LOCK SOL
10A
A537-PK-18
PRESSURE SW
106-0179
K976-OR-18
K975-WH-18
AUX CKT
AUX CKT
K974-PU-18
SW PANEL
K973-BR-18
A755-PK-18
A756-PU-18
A757-WH-18
A758-BR-18
546-BU-18
548-GY-18
549-PK-18
547-OR-18
952-OR-18
191-WH
6
8
1
7
4
5
3
2
HYD LOCK SW
L57
961-BR-18
A849-OR-18
JJ
A850-WH-18
951-PK-18
J
J
FUSE BASE
111-4812
950-BR-18
A847-YL-18
A848-PK-18
954-GN-18
585-YL-18
200-BK
191-WH-18
954-GN-18
952-OR-18
1
C
B
A
2
403-GN-18
1
152-BU
118-GY
112-PU-6
2
152-BU
NN
200-BK-14
506-PU
200-BK-18
MONITOR +B OUT
L968-OR-18
A761-PU-18
L978-GY-18
A755-PK-18
763-BU-18
A757-WH-18
524-BU
A771-PU-18
306-GN-18
306-GN-18
A756-PU-18
K997-BU-18
788-YL-18
A762-PU-18
412-BU-18
430-BU-18
321-BR-18
405-GY-18
492-GY-18
491-PK-18
495-GN-18
A758-BR-18
152-BU
496-WH-18
118-GY
308-YL-18
L975-PK-18
200-BK-14
200-BK
ZZ 111-4831 F-8
200-BK-14
524-BU
103-RD-18
200-BK
120-YL
139-OR-18
A
E
2
1
524-BU
129-BU-18
103-RD-18
403-GN-18
12
K997-BU-18
633-BU-18
508-PU-18
210-BK
135-BU
210-BK
135-BU
12V SOCKET
9R-7941
615-YL
615-YL
615-YL
103-RD-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
K997-BU-18
103-RD-18
200-BK
103-RD-18
LUNCH BOX LIGHT
K912-GN-18
120-YL
524-BU
118-GY
139-OR-18
633-BU-18
615-YL
210-BK
135-BU
506-PU
524-BU
524-BU
590-GY-18
506-PU
501-GN-18
129-BU-18
403-GN-18
200-BK-18
235-BK-18
K997-BU-18
K997-BU-18
K997-BU-18
954-GN-18
152-BU-18
235-BK-18
K911-PK-18
K912-GN-18
C468-BU-18
K907-BU-18
F772-WH-18
F771-OR-18
K915-GN-18
K911-PK-18
K912-GN-18
152-BU
60A
103-RD-18
615-YL-18
A586-OR-18
120-YL
139-OR-18
633-BU-18
210-BK
L909-BU-18
A586-OR-18
L908-OR-18
487-OR-18
135-BU
118-GY
K904-GN-18
K905-RD-18
L57
235-BK-18
C537-GN-18
200-BK-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
C538-OR-18
103-RD-18
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
FRONT PUMP PRESS SENSOR
HYD OIL LEVEL SW
AIR CLEANER SENSOR
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
23
EPR VALVE (-)
17
21
8
RS485 + (LH JOYSTICK) 7
CAB
8 RS485 - (LH JOYSTICK)
RS485 + (PEDAL) 9
10
RS485 + (SEMI AUTO DIG)
RS485 - (PEDAL)
RS485 + (RADIO CONT)17
HYD TANK PRESS. SW
RS485 + (MONITOR)
RS485 - (SEMI AUTO DIG)
HYD TANK INDICATOR
RS485 + (RH JOYSTICK)
RS485 - (MONITOR)
27
18
308-YL-18
TRAVEL PRESS SW
HYD OIL FILTER INDICATOR
200-BK-18
18
RS485 - (RADIO CONT)
RS485 + (ELEC GOV)19
+B
+B
AIH INDICATOR
FINE SWING SW
BOOM RAISE PRESS SW
LEVEL FINISH SOL
DUAL PWR SOL
AUX HYD PRESS SW
32
33
25
KEY SW ON
RS485 - (ELEC GOV)
26
12
40
2
4
28
27
ONE TOUCH 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)
KEY SW START
A
DOME LAMP
096-0721
2
3
4
5
6
1
8
7
37
4
3
1
16
19
5
12
32
33
14
11
34
ATCH SPEAKER(L)
7Y-5505
ATCH SPEAKER(R)
7Y-5505
7
8
9
10
1
11
7
6
5
4
3
8
1
2
5
4
3
2
1
6
F
F
F
F
F
E E
A
A A
6
5
4
3
2
L6
L7
ANTENNA
6C3431
501-GN-18
177-RD-14
PLATFORM
A
1
6
2
5
3
4
2
3
4
5
6
1
8
7
BK-00
RD-00
RD-00
A
CHASSIS
DD
DD
GG
(NOTE C)
CC
BK-00
FF (NOTE C)
BB
EE (NOTE C)
AA
L15
L15
B
BB
115-PK-14
154-RD-18
111-RD-14
150-RD-18
K997-BU-18
154-RD-18
111-RD-14
150-RD-18
BBB
N
B
3E-5136
A
A
L45
L50
L45
RELAY PANEL
115-PK-14
114-RD-18
114-RD-18
114-RD-18
L15
D
D
DA
A
A
L48
L47
114-RD-18
150-RD-18
154-RD-18
111-RD-14
150-RD-18
A495-GY-18
115-PK-14
115-PK-14
115-PK-14
A495-GY-18
A495-GY-18
150-RD-18
114-RD-18
154-RD-18
111-RD-14
K909-BU-18
306-GN-18
306-GN-18
150-RD-18
306-GN-18
K909-BU-18
786-GN-18
177-RD-14
196-BU
320-OR-18
114-RD-18
322-GY-18
L48
L47
L47
306-GN-18
A495-GY-18
111-RD-14
154-RD-18
154-RD-18
177-RD-14
111-RD-14
A495-GY-18
RELAY PANEL
L50
L48
A
B
B
B
B
DB
L51
L45
L49
L51
L49
L50
L51
E
L45
L44
L42
L41
L29
L30
L44
L42
L41
L29
L30
L30
L29
L41
L42
L44
D
L45
L30
L29
L41
L42
L44
L42
L41
L29
L30
4
3
5
323-WH-14
168-RD-18
168-RD-18
168-RD-18
168-RD-18
4
168-RD-18
5
200-BK-14
200-BK-18
168-RD-14
200-BK-14
200-BK-18
L976-GN-18
L976-GN-18
L976-GN-18
365-YL-18
168-RD-18
365-YL-18
152-BU-14
152-BU-14
C
140-BU
B
200-BK
200-BK
200-BK-18
200-BK-18
200-BK-18
321-BR-18
200-BK
140-BU
430-BU-18
412-BU-18
A
L909-BU-18
L908-OR-18
310-PU-18
311-WH-18
430-BU-18
200-BK-18
519-PK-18
519-PK-18
513-OR-18
519-PK-18
200-BK-18
412-BU-18
1
2
OR
PK
140-BU
200-BK
326-RD
235-BK-18
308-YL-18
200-BK-18
200-BK
BLOCK
121-1023
CONSOL SW
SENSOR 2
GND
A850-WH-18
SENSOR 1
6
5
+ 24V
4
3
2
132-7315
SENSOR O.W.D.
A425-YL-18
A424-WH-18
A425-YL-18
A424-WH-18
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
THIS SCHEMATIC IS FOR THE 322B-HYD EXCAVATOR.
LL 111-4832 F-8
HH 7Y-8298 A-8
GG 116-0242 H-8
FF 116-0080 H-8
EE 116-0241 A-8
DD 111-4881 I-8
CC 125-4727 I-8
BB 116-0080 I-8
AA 125-4861 A-8
CABLE AS.
VV 128-8937 F-8
WIRE AS.
R 128-8970 A-2
200-BK-18
586-BR-18
200-BK
191-WH
A849-OR-18
200-BK-14
200-BK-18
2
1
200-BK-18
1
N 116-0073 E-7
M 117-7028 G-1
K 116-0207 B-2
J 133-5388 H-3
H 137-1840 D-3
G 102-7867 A-1
F 136-8032 G-1
E 130-6568 D-1
D 135-9848 F-8
C 130-6572 A-9
B 134-0293 A-3
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
DESCRIPTIONSYMBOL
CONNECTOR
ELECTRICAL CONNECTION
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
L#
CIRCUIT GROUPING
DESIGNATION
IDENT
PART NO. LOC
198-PK-18
191-WH
191-WH-14
585-YL-18
950-BR-18
HARNESS AS.
310-PU-18
L971-GN-18
A771-PU-18
L974-GN-18
K906-GN-18
495-GN-18
616-BU
322-GY-18
607-PK-18
168-RD-14
L45
496-WH-18
487-OR-18
491-PK-18
306-GN-18
386-PK-18
L977-YL-18
763-BU-18
L978-GY-18
A768-BU-18
A769-GY-18
K904-GN-18
K997-BU-18
200-BK
200-BK
200-BK-18
200-BK
NOTE E : NOT NECESSARY FOR ELECTRIC OPENABLE
WINDSHIELD.
NOTE D : USE WITH ELECTRIC OPENABLE WINDSHIELD.
311-WH-18
172-RD-18
A761-PU-18
F773-OR-18
F774-WH-18
326-RD
405-GY-18
788-YL-18
A762-PU-18
C468-BU-18
101-RD-4
304-WH-8
403-GN-18
109-RD-6
309-GY-18
492-GY-18
A718-PU-18
877-YL-4
200-BK
200-BK
124-GN-18
311-WH-18
321-BR-18
519-PK-18
412-BU-18
430-BU-18
A537-PK-18
2
1
200-BK-18
310-PU-18
586-BR-18
L49
105-RD
576-PK-18
575-YL-18
F773-OR-18
F774-WH-18
A770-PK-18
A769-GY-18
A768-BU-18
K906-GN-18
615-YL-18
L973-GN-18
578-BU-18
307-OR-18
308-YL-18
791-PK-18
786-GN-18
185-YL-18
113-OR-18
A586-OR-18
501-GN-18
590-GY-18
306-GN-18
A718-PU-18
309-GY-18
616-BU
322-GY-18
607-PK-18
304-WH-8
877-YL-4
101-RD-4
109-RD-6
JJ 133-7295
KK 111-4833 F-8
152-BU
L973-GN-18
147-PU-18
961-BR-18
K909-BU-18
200-BK-18
200-BK-18
200-BK-18
495-GN-18
616-BU
322-GY-18
607-PK-18
168-RD-14
L18
495-GN-18
200-BK-18
616-BU
322-GY-18
607-PK-18
168-RD-14
A
J
200-BK-18
200-BK-18
200-BK-18
8
7
6
5
4
3
2
1
ATCH
SEAT WITH
SEAT HEATER
111-6458
1
10
8
11
12
9
10
11
4
3
2
1
9
8
2
7
6
5
4
3
2
1
4
5
6
1
7
3
3
HH
AA
H
2
A
H
4
A
NOTE B ; USE WITH SHORT BOOM.
200-BK-18
118-GY
118-GY
109-RD-6
877-YL-4
3
L44
L43
L44
L15
B
CHASSIS
L42
200-BK-18
L41
L29
L30
326-RD
A537-PK-18
124-GN-18
C
EE
AA
L969-WH-18
L43
L43
K997-BU-18
B
CHASSIS
L30
L28
L28
200-BK-18
200-BK-18
A770-PK-18
L968-OR-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
L29
200-BK-18
L30
L29
L41
L42
L42
L41
K905-RD-14
150-RD-18
150-RD-18
150-RD-18
150-RD-18
150-RD-18
154-RD-18
L40
200-BK-18
200-BK-18
L23
L15
191-WH-14
615-YL
191-WH
615-YL-18
615-YL-18
200-BK-18
115-PK-14
K905-RD-14
150-RD-18
200-BK-18
154-RD-18
172-RD-18
L15
L40
L39
YY 111-4830 F-8
L54
615-YL-18
152-BU-18
615-YL-18
575-YL-18
576-PK-18
578-BU-18
177-RD-14
L973-GN-18
152-BU-18
L39
200-BK-18
115-PK-14
172-RD-18
200-BK-18
154-RD-18
150-RD-18
K907-BU-18
111-RD-14
K905-RD-14
200-BK-18
200-BK-18
615-YL-18
615-YL-18
L21
586-BR-18
L20
L19
200-BK-18
615-YL-18
200-BK-18
K909-BU-18
200-BK-18
L52
200-BK-18
L54
XX 111-4829 F-8
L54
200-BK-18
200-BK-18
185-YL-18
K909-BU-18
L21
L7
L34
L20
L19
L3
L34
L25
L35
L20
L19
L3
L25
L4
L33
326-RD
326-RD
L21
L32
L31
L10
L9
L8
A
L12
L13
H
L13
L12
L11
L8
L9
L10
L32
L31
HH
L33
L33
L33
L33
K915-GN-18
L20
308-YL-18
L19
L3
L25
L4
L4
L25
L3
L19
L20
L35
L35
L32
L31
L4
L25
L3
L19
L20
L3
L4
L19
L20
L25
L4
L4
L3
L2
L20
L25
L2
118-GY
K997-BU-18
K997-BU-18
K997-BU-18
118-GY
152-BU-18
200-BK
615-YL-18
L27
L26
L35
L27
L26
L36
F771-OR-18
F773-OR-18
F774-WH-18
F772-WH-18
615-YL-18
A769-GY-18
T 116-0096 A-4
152-BU-18
615-YL-18
A768-BU-18
F
A
L6
L7
L30
K906-GN-18
L28
615-YL-18
185-YL-18
L29
L29
L28
AB
200-BK-18
10
WW 128-8938 F-8
310-PU-18
615-YL-18
615-YL-18
168-RD-14
200-BK-18
120-YL
168-RD-14
H
ATCH START
AID SW
111-4784
168-RD-18
185-YL-18
L7
L6
L5
L18
L3
L19
L21
L20
S
200-BK-18
ATCH AUX HYD
CONT SW
111-4787
H
L11
FINE
SWING CONT SW
111-4788
115-PK-14
961-BR-18
961-BR-18
H
HH
ATCH
O.W.D. SW
132-1828
H
BACKUP
EPR VALVE SW
114-0421
H H
BACKUP
GOV SW
110-7884 ATCH SEAT
HEATER SW
111-4783
H
200-BK-14
120-YL
615-YL
189-RD-14
189-RD-14
189-RD
189-RD
189-RD
189-RD
189-RD
189-RD
189-RD
200-BK
200-BK-18
200-BK
615-YL
I-6
QQ 134-6475
L53
L46
L46
S 136-4731 F-3
A 136-6469 C-2
6
5
3
8
1
7
2
4
B+ 12V
L35
L16
L46
L36
L36
L38
L16
L37
L3
L19
L20
L35
L38
L37
L22
L58
L58
L38
L38
L58
L16
L20
L21
L19
L3
L59
L36
L18
L24
L24
L60
L60
L55
L38
SIGN. OUT
L38
L58
L60
L38
L58
L16
L55
L36
A588-GN-18
LEFT SW
198-PK-18
198-PK-18
200-BK-18
546-BU-18
524-BU
172-RD-18
109-RD-6
326-RD
172-RD-18
198-PK-18
189-RD-14
L39
L16
200-BK-18
L58
616-BU
200-BK
200-BK-18
322-GY-18
546-BU-18
200-BK-14
RIGHT SW
200-BK-18
MULTISWITCH JOSTICK
122-4829
112-PU-14
200-BK
386-PK-18
306-GN-18
491-PK-18
487-OR-18
496-WH-18
200-BK-18
112-PU-14
386-PK-18
111-RD-14
547-OR-18
306-GN-18
B
491-PK-18
200-BK-18
200-BK-18
200-BK-14
616-BU
200-BK-18
322-GY-18
322-GY-18
322-GY-18
200-BK-18
607-PK-18
320-OR-18
L46
200-BK-14
322-GY-18
200-BK-18168-RD-14
200-BK
200-BK-18
L59
325-PK-18
200-BK-14
323-WH-14
L59
365-YL-18
L58
200-BK-18
SOCKET FOR
INSP LAMP
9R-7941
616-BU-18
L52
DIODE
121-1022
L58
198-PK-18
LEFT SW
A758-BR-18
118-GY
115-PK-14
111-RD-14
L24
L37
L16
L38
L24
L36
F
L46
L46
U 116-0098 A-4
307-OR-18
L56
615-YL-18
L56
L36
L24
L56
198-PK-18
547-OR-18
L37
506-PU
A755-PK-18
MM
112-PU-14
CAB LAMP
5I-8250
200-BK
152-BU-14
506-PU
L38
L35
2
ATCH
AM/FM RADIO
1
L15
OPERATOR STATION
L16
200-BK-14
L17
L38
200-BK-18
403-GN-18
L38
210-BK
105-RD
A586-OR-18
L16
103-RD
L37
103-RD
103-RD
177-RD-12
200-BK-18
633-BU-18
135-BU
210-BK
L56
139-OR-18
103-RD
103-RD
SIGN. IN
L23
L15
501-GN-18
A587-YL-18
191-WH
200-BK
235-BK-18
L909-BU-18
200-BK
L908-OR-18
633-BU-18
L56
L37
I-6
L16
322-GY-18
150-RD-18176-YL
L38
L24
152-BU-14
K912-GN-18
L14
616-BU
L24
201-BK-18
L24
L55
200-BK-18
C
B
A
139-OR-18
103-RD-18
191-WH
L56
L53
308-YL-18
5
4
3
2
1
L55
118-YL
524-BU
8630-BU-18
L55
L53
200-BK
154-RD-18
189-RD
172-RD-18
L22
198-PK-18
CONVERTER
K905-RD-14
548-GY-18
549-PK-18
L22
111-RD-14
150-RD-18
152-BU-14
129-BU-18
616-BU-18
200-BK-18
L56
151-GN-18
308-YL-18
575-YL-18
ATCH-AUX/HYD
CONTROLLER
122-9897
576-PK-18
152-BU-18
I
198-PK-18
I-6
200-BK-18
519-PK-18
198-PK-18
198-PK-18
198-PK-18
546-BU-18
198-PK-18
547-OR-18
G-6
A587-YL-18
633-BU-18
508-PU-18
512-GN-18
509-WH-18
511-BR-18
210-BK
139-OR-18
135-BU
10
191-WH-14
L976-GN-18
191-WH-14
MEMORY +12V
200-BK-18
GROUND
SPEAKER RH+
SPEAKER LH-
SPEAKER RH-
SPEAKER LH+
+12V LIGHT
135-BU
139-OR-18
210-BK
511-BR-18
509-WH-18
512-GN-18
508-PU-18
L53
L52
L52
L56
L52
L52
GND IN
WASH SW
+ 24 IN
MOT WASH
135-BU
WIPER SW
L23
L53
OUTPUTS
INTER SW
200-BK
118-GY
200-BK-18
524-BU
C
B
OPERATOR STATION
200-BK-18
607-PK-18
WIND SW
L976-GN-18
150-RD-18
L23
L55
154-RD-18
L56
S
-
A/C UNIT
126-3375
506-PU
200-BK-14
+
103-RD
K911-PK-18
590-GY-18
4
2
633-BU-18
200-BK-18
403-GN-18
6
9
3
129-BU-18
C538-OR-18
C537-GN-18
4
500-BR-18
200-BK-14
200-BK-18
201-BK-18
200-BK-18
A755-PK-18
A756-PU-18
A
615-YL-18
7
200-BK-14
L36
L38
L37
L16
L16
200-BK-18
616-BU-18
615-YL
200-BK
L972-BU-18
200-BK-18
308-YL-18
200-BK-18
113-OR-18
791-PK-18
786-GN-18
306-GN-18
A586-OR-18
501-GN-18
590-GY-18
R
L37
200-BK
A757-WH-18
A758-BR-18
3
1
L38
6
A
154-RD-18
L37
A755-PK-18
A756-PU-18
L38
A757-WH-18
A758-BR-18
200-BK
L969-WH-18
L968-OR-18
B
INSP LAMP
2
AC
4
1
K907-BU-18
F772-WH-18
F771-OR-18
K915-GN-18
L53
L4
L52
2
L24
1
1
2
189-RD
103-RD-18
172-RD-18
508-PU-18
509-WH-18
L21
3
L20
L5
L11
L12
H
L6
E
CAB
U U
ATCH
REFUELING
START RELAY
111-4871
J
PLATFORM
A
F
E
E
+
H
ONE TOUCH
LOW IDLE SW
120-YL
R
L19
ATCH AUX SW
U
AUX CKT
HYD
LOCK SOL
121-1491
L17
L15
L14
+B
L. CHASSIS
L. BOOM
306-GN-18
WASH
W. LOW
W. INT
GND
GND
LIGHT
RS485-
+B
MAIN
RS485+
1
8
5
2
511-BR-18
200-BK
524-BU
500-BR-18
L972-BU-18
308-YL-18
UPPER WIPER MOTOR
131-0399
WIPER CONT
127-9838
NEUTRAL START
LIMIT SW
111-4799
HORN SW
128-2134
118-YL
L15
L975-PK-18
AC
K997-BU-18
326-RD
L20
L21
L19
L3
524-BU
A
L20
L21
L19
L3
L18
L3
L18
AC
B
326-RD
L13
L13
L12
L11
L13
L12
L11
L10
L9
L8
L10
L9
L8
E
K997-BU-18
L7
K905-RD-18
K905-RD-18
L1
A
A
E
L6
L7
L1
AC 125-4862 A-2
B
512-GN-18
L1
WINDSHIELD SW
9G-2795 (NOTE E)
K905-RD-18
320-OR-18
F
AC
ATCH
BOOM LAMP
5I-8250
K905-RD-14
L37
CHASSIS
OPERATOR STATION
S4
S3
S2
S1
COM
G (NOTE B)
AB 121-1044 A-6
177-RD-14
ATCH
REFUELING PUMP
108-9845
ATCH
REFUELING
START SW(NO)
6T-9442
T
R
R
HORN
7T-0970
MM
NN 134-6390
200-BK-14
R
G (NOTE B)
K
K
+
-
1
2
ATCH
REFUELING
STOP RELAY
111-4871
L976-GN-18
H
R
MONITOR
106-0172
R
SWITCH PANEL
111-4800
KEY SW
9G-7641
H
TT
ATCH
REFUELING
STOP SW(NC)
9X-4184
168-RD-18
L2
A/C PHOTO
SENSOR
128-2162
(NOTE H)
L3
200-BK
C
LOWER WIPER MOTOR
131-0398
+
-
L2
UU 111-4826 F-8
S
B
-
MOTOR
SERVICE
METER
6T-7337
CHASSIS
LAMP
5I-8251
THROTTLE
POS SW
106-0107
ATCH
BOOM LAMP
5I-8250
MOTOR
L6
EE
E
R
C
S
B
E
A
OFF
ON
ST
NOTE A : NORMALLY OPEN BEFORE REFRIGERANT CHARGE.
L7
B
CIGAR
LIGHTER
9W-0335
1
2
2
1
L7
HORN
7T-0969
L6
(116-0196 V00)
NOTE C : USE IN COLD WEATHER.
CONN 1
CONN 2
CONN 3 CONN 4
CONN 5
CONN 11
CONN 10
CONN 9
CONN 8
CONN 7
SERVICE CONNECTOR
CONN 6
CONN 30
CONN 29
CONN 28
CONN 25
CONN 26
CONN 27
CONN 31
CONN 32
CONN 33
CONN 34
CONN 35
CONN 36
CONN 18
CONN 19
CONN 20
CONN 21
CONN 22
CONN 23 CONN 24
CONN 13
CONN 14
CONN 15
CONN 16
CONN 17
CONN 45
CONN 42
CONN 43
CONN 44
CONN 37
CONN 38
CONN 39
CONN 40 CONN 41
TO MACHINE STRUCTURE
CONN 12
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
D84236
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.
MONITOR CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CONTROL CIRCUIT.
START AID CIRCUIT.
ENGINE/PUMP CONTROL CIRCUIT.
ALL DASHED LINES ARE ATTACHMENTS.
