938F WHEEL LOADER AND IT38F INTEGRATED TOOLCARRIER ELECTRICAL SYSTEM

Component Identifiers (CID¹)
Module Identifier (MID²)
CID Component
Caterpillar Monitoring System MID 30
096 Fuel Level Sensor
110 Engine Coolant Temp Sensor
177 Torque Converter Oil Temp Sensor
248 CAT Data Link
263 8 Volt Sensor Power Supply
271 Action Alarm
324 Action Lamp
600 Hydraulic Oil Temp Sensor
819 Display Data Link
821 9 Volt Display Power Supply
Autoshift Transmission Control MID 81
168 Electrical System Voltage
190 Engine RPM Sensor
191 Transmission Speed Sensor
248 CAT Data Link
362 Ride Control Solenoid
368 Auto/Manual Switch
617 Air Inlet Heater Relay
621 Downshift Switch
641 Solenoid 1 (Forward High)
642 Solenoid 2 (Reverse)
643 Solenoid 3 (Forward Low)
644 Solenoid 4 (Speed 1)
645 Solenoid 4 (Speed 2)
646 Solenoid 6 (Speed 3)
650 Harness Code
660
thru
668
Shift Handle
680 Ride Control Switch
687 Options Idenification Code
Traction Control System MID 28
168 Electrical System Voltage
248 CAT Data Link
263 10 Volt Power Supply
270 Harness Code
605 Left Front Speed Sensor
606 Right Front Speed Sensor
607 Left Rear Speed Sensor
608 Right Rear Speed Sensor
609 Left Front Brake Solenoid
610 Right Front Brake Solenoid
611 Left Rear Brake Solenoid
612 Right Rear Brake Solenoid
613 ON/OFF Solenoid
615 Articulation Angle Sensor
616 Test/Enable Switch
653 TCS (ECM) Control
687 TCS Options Code Plug
¹ The CID is a diagnostic code that indicates which component is faulty.
²The MID is a diagnostic code that indicates which electronic control module
diagnosed the fault.
Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 A-15 4
CONN 2 Diagnostic Conn B-15 8
CONN 3 D-15 52
CONN 4 D-15 50
CONN 4A E-15 50
CONN 5 D-15 49
CONN 5A H-13 49
CONN 6 E-15 51
CONN 6A F-15 51
CONN 7 A-13 52
CONN 8 E-15 23
CONN 9 A-12 21
CONN 9A B-13 21
CONN 10 A-11 53
CONN 11 A-11 53
CONN 12 B-11 54
CONN 13 B-11 54
CONN 14 B-10 54
CONN 15 Options Code Plug F-12 52
CONN 16 Std Harness Code Plug G-11 53
CONN 16A Service Code Plug
For Bleeding Brake Oil
G-11 53
CONN 17 Diagnostic Conn H-11 53
CONN 18 I-12 56
CONN 19 I-12 56
CONN 20 C-10 C
CONN 21 D-10 C
CONN 22 D-10 C
CONN 23 F-10 C
CONN 23A F-11 C
CONN 24 F-11 C
CONN 25 B-8 C
CONN 26 B-7 54
CONN 27 D-8 C
CONN 28 B-7 33
CONN 29 B-7 48
CONN 30 D-7 C
CONN 31 D-7 C
CONN 32 D-7 C
CONN 33 D-7 C
CONN 34 D-6 56
CONN 35 D-6 A
CONN 36 Harness Code Plug F-6 A
CONN 37 Service Mode Plug F-5 A
CONN 38 B-5 54
CONN 39 A-2 55
CONN 39A I-6 55
CONN 39B I-3 55
CONN 40 A-3 57
CONN 40A H-6 57
CONN 40B H-3 57
CONN 41 A-3 57
CONN 41A D-6 57
CONN 41B D-3 57
CONN 42 A-3 57
CONN 42A H-6 57
CONN 42B H-3 57
Related Electrical Service Manuals
Form Number
Alternator 9W-3043
SENR3685
Caterpillar Monitoring System
SENR6717
Payload Monitor
SENR4733
Starting And Charging Systems
SENR2947
Starting Motor 9X-9995
Consist:
3E-2298
8C-4773
106-8558
SENR3581
SENR3859
SENR3559
Traction Control System
SENR5956
Transmission Control
SENR5989
Title
CONN 43 C-3 15
CONN 44 Customer Data Conn D-3 52
CONN 45 ECAP Service Conn D-3 52
CONN 46 E-3 A
CONN 47 E-3 A
CONN 48 B-2 55
CONN 49 C-2 59
CONN 49A H-5 59
CONN 49B H-2 59
CONN 49C E-2 59
CONN 50 C-2 58
CONN 50A I-5 58
CONN 50B I-2 58
CONN 50C E-2 58
CONN 51 C-2 45
CONN 52 D-2 C
CONN 52A D-2 C
CONN 53 F-1 A
CONN 54 F-1 A
CONN 55 G-14 60
CONN 56 H-14 61
CONN 57 H-14 61
CONN 58 H-14 63
CONN 58A H-15 63
CONN 59 H-14 62
CONN 60 H-14 62
CONN 61 I-4 58
CONN 62 H-2 31
CONN 63 C-4 C
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.
Failure Mode Identifiers (FMI)¹
FMI No.
Failure Description
0 Data valid but above normal operational range.
1 Data valid but below normal operational range.
2 Data erratic, intermittent, or incorrect.
3 Voltage above normal or shorted high.
4 Voltage below normal or shorted low.
5 Current below normal or open circuit.
6 Current above normal or grounded circuit.
7 Mechanical system not responding properly.
8 Abnormal frequency, pulse width, or period.
9 Abnormal update.
10 Abnormal rate of change.
11 Failure mode not identifiable.
12 Bad device or component.
13 Out of calibration.
¹The FMI is a diagnostic code that indicates what type of failure has occurred.
Mode Of Operation Mode Number
Normal 0
Harness Code 1
Numeric Readout 2
Service 3
Tattletale (Log) 4
Units 5
Setup 6
Calibration 7
Monitoring System Modes
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
9G-1950 Resistor - Blower Motor Speed Overall 2.0 ± .1; Tap 1.0 ± 05
6T-7864 Resistor - Main Realy 39 ± 1.95
3E-7842 Resistor - Starter/Diagnostic Conn 150 ± 7.5
134-7262 Sender - Fuel Level
240 - 260 Empty
27.5 - 39.5 Full
3E-8848 Sensor - Engine Speed 1000-1200
4W-9972
Sender - Hydraulic Oil Temp, Torque
Converter
54°C (130°F)-560 to 716
110°C (230°F) - 72 to 82
6V-2455 Sensor - Transmission Speed 110 - 200
8T-8808 Solenoid - Fourth Function Diverter 34.3 ± 1.7
134-3999 Solenoid - A/C Clutch 17.6 ± 0.6
8C-3663 Solenoid - Engine Shutdown
1.55 ± 0.15
10.3± 1.03
116-4152 Solenoid - Pilot ON/Off 34.3 ± 1.7
6T-8046 Solenoid - Aide Control 20.1 ± 1.0
3E-6332 Solenoid - Start Aid 6.00
3E-8591 Solenoids - Transmission 29.8 ± 1.5
¹ At room temperature unless otherwise noted.
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
3E-6429 Supplemental Steering Oil Flow
4 grams
(.14 oz)
1.5 grams
(.05 oz)
Normally Open
3E-6449 Start Aid Coolant
38 ± 3°C
(100 ± 5°F)
27°C MIN
(60.6°F)
Normally Closed
3E-6450 Primary Steering Pressure
1200 kPa MAX
(175 psi MAX)
700 ± 100 kPa
(100 ± 15 psi)
A-C! Normally Closed
A-B, Normally Open
3E-6455 Engine Oil Pressure (EMS)
90 ± 21 kPa
(13 ± 3.0 psi)
70 ± 21 kPa
(10 ± 3.0 psi)
A-B, Normally Open
A-C, Normally Closed
3E-7693 Brake Oil Pressure (EMS)
10700 kPa MAX
(1550 psi MAX)
8960 ± 345 kPa
(1300 ± 50 psi)
A-B, Normally Open
A-C, Normally Closed
114-5333 Refrigerant Pressure (AC)
275 to 1750 kPa ¹
(40 to 255 psi)
-
-
Normally Open ²
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 (25psi).
² Contact postion at the contacts of the harness connector.
Wire Description
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Accessory Circuits (Continued)
101 RD Bat (+) 503 BR Wiper - Rear (Park)
102 BU Hd Lmp 504 YL Wiper - Rear (Low)
105 BR KeySw 505 BU Wiper- Rear (Hi)
108 BU Aux Ckt 506 PU Washer - Front
109 OR Alt Output (+) Term 507 WH Washer - Rear
112 PU Main Power Rly Output 508 PU Radio Speaker - Left
113 OR Opr Mon Panel 509 WH Radio Speaker - Left (Commom)
114 GN Warning Horn (Forward) 511 BR Radio Speaker - Right
116 BR Aux Ckt 512 GN Radio Speaker - Right (Common)
118 GY Aux Ckt 513 OR A/C Compressor/Retriçerant Pressure SW
120 YL Aux Ckt 515 GY Blower Motor (Hi)
121 YL Back Alarm To Lamp 516 GN Blower Motor (Medium)
124 GN A/C 517 BU Blower Motor (Low)
126 PK Xmsn Ctrl 521 YL A/C SW To Refrigerant SW
127 OR Aux Ckt 522 WH A/C Clutch To Thermostat SW
128 PK Aux Ckt 537 GN Turn Signal SW To Flasher
129 BU Aux Ott 538 BR Hazard Indicator
130 GN Aux Ckl A513 PK DC/DC Converter Memory Output
133 OR Aux Ckt A538 OR
Rear Window Defroster
(Resistive Element In Glass)
135 BU Aux Ckt Lighting Circuits
136 GN Suppl Ster 603 PK Rotary Beacon
138 GN Auto Lube Pump To Payload Mon 604 OR Stop Lamp
144 GN Aux Ckt 605 YL Turn Lamp - Left
150 OR Bat (+) 606 GY Turn Lamp - Right
164 WH Hydra Ctrl WTL Powertrain Ctrl 608 GN Flood Lamp - Rear
167 OR Aux Ckt 610 OR Head Lamp Basic
188 WH Aux Ckt 611 PU Head Lamp Hi
Ground Circuits 612 GY Backup Lamp
200 BK Main Chassis 614 PU Park/Tail/Dash/Lamp
201 BK Operator Monitor Return 615 YL Cab Flood Lamp/Rops
202 BK XMSN Ctrl 617 BR Tail/Position Lamp - Left (Road Pkg)/Width
203 BK Chassis Diagnostic 619 GN Head Lamp Lo
207 BK Starter Diagnostic 661 GN Tachometer Lamp
250 BK Payload Mon - Customer Ond 662 YL Speedometer Lamp
251 BK Payload Mon - System Ond 663 GY Gauge Lamps
270 BK Ident Code 0 Control Circuits
271 BK Ident Code 1 709 OR Sensor Power Supply
272 BK Ident Code 2 710 GN XMSN Speed Pickup Signal
273 BK Ident Code 3 720 PU XMSN Brake SW
274 BK Ident Code 4 727 GN Suppi Ster Motor Relay
275 BK Ident Code 5 751 GN XMSN Shift Sot No. 1 Or 3
290 BK Service 752 YL XMSN Shift Sot No. 2
291 BK Clear 754 BU XMSN Shift Sot NO. 3 Or 1
A219 BK Ctrt Gnd 755 OR XMSN Shift Sol No. 4 Or 5
A221 BK XMSN Ctrl Options Code 0 761 GY Uft Kickout Sot SW
A222 BK XMSN CIrl Options Code 1 762 YL Bucket Positioner Sot SW
A223 BK Ctrl Harness Code 0 B766 WH Kickouts / Detent Disable SW To Kickouts
A224 BK Ctrl Harness Code 1 D743 GN Ride Cont - Wtt tmpt Cont SW To Ond N/O
A225 BK Ctrl Harness Code 2 D744 WH Ride Cont - Wtt tmpi Cont SW To Ond N/C
A226 BK Ctrl Harness Code 3 E701 PK Auto Ride Cntt SW
Basic Machine Circuits E702 OR Auto Ride Cntt SW
301 BU Starter No.1 Sol E707 GN Display +V
302 OR Starter No. 1 Resistor To Diagnostic E708 PK Display Clock
304 WH Starter Relay No. 1 Output E735 PU Tack/Serv Mtr/Odometer Select
306 GN Starter Relay Coil To Neut Start SW Or Key SW 818 BR Serial Data (Transmit)
307 OR Key SW To Neut Start SW Or Vmis Sensor Module 819 OY Serial Data (Receive)
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Action E-5 1 Sensor - Wheel Speed (Right Front) A-2 27
Alarm - Backup D-15 2 Sensor - Wheel Speed (Right Rear) I-11 28
Alternator E-13 3 Sensor - WLPMS Lift Cylinder Pressure A-2 29
Arc Suppressor (A/C) A-15 4 Sensor - WLPMS Lift Position A-2 30
Arc Suppressor -(Secondary Steering) A-14 5 Solenoid - 4th Function Diverter Valves (1T38F Only) H-1 31
Aux Start Recptacle F-14 6 Solenoid - (Pilot Valve Up) Bucket/ForkDetent B-6 C
Battery F-15 7 Solenoid - (Pilot Valve Up) Float Detent B-S C
Breaker - Alternator (80A) C-15 8 Solenoid - (Pilot Valve Up) 11ft Detent B-6 C
Breaker - Blower Motors (15A) C-11 C Solenoid - A/C Clutch A-15 4
Breaker - Main (80A) C-15 8 Solenoid - Engine Shutdown B-15 32
Breaker - Running Lamp (15A) C-15 8 Solenoid - ON/OFF Pilot I-11 33
Breaker - Seat (Air Compressor/Heater) (15A) C-11 C Solenoid - Proportional (Left Front) I-11 38
Caterpillar Monitoring System E-5 A Solenoid - Proportional (Left Rear) H-11 38
Control - CST Autoshift E-12 9 Solenoid - Proportional (Right Front) I-11 38
Control - Secondary Steering A-14 5 Solenoid - Proportional (Right Rear) H-11 38
Control - Traction Control System H-12 10 Solenoid - Ride Control (2) B-1 35,36
Control - WLPCSII E-3 11 Solenoid - Start Aid E-14 37
Converter F-7 12 Solenoid - Transmission (6) C-12 34
Defroster - (Rear) (COSA Only) F-11 13 Starter F-14 39
Dimmer E-4 C Switch - 4th Function Diverter (1T38F Only) F-10 C
Flasher E-6 A Switch - A/C Hi/Low Pressure A-15 4
Fuses C-11 C Switch - Auto Ride Control E-7 C
Fuses C-15 C Switch - Beacon D-10 C
Gauge (Ouad) F-4 A Switch - Blower D-5 A
Horn - Forward B-1 43 Switch - Brake Oil Pressure C-13 38
Intake Air Heater F-13 14 Switch - Bucket Positioner B-1 40
Keypad - (WLPCS) C-3 11 Switch - Bucket/Fork Positioner (1T38F Only) F-10 C
Lamp - Action D-4 B Switch - Defroster (Rear Window)(COSA Only) E-11 C
Lamp - Auto Ride Control F-4 B Switch - Detent Lockout B-7 C
Lamp - Automatic Transmission Mode D-4 B Switch - Dimmer (COSA Only) D-2 C
Lamp - Defroster (Rear Window)(COSA Only) E-11 B Switch - Disconnect F-14 41
Lamp - Flood Indicator D-4 B Switch - Engine Oil A-15 42
Lamp-Hazard_Flasher F-4 B Switch - Flood Lamp E-11 C
Lamp- Hi/Low/Position/Turn (Left Hand)
(COSA Only)
E-1 B Switch - Forward Horn C-6 B
Lamp - Hi/Low/Position/Turn (Right Hand)
(COSA Only)
E-1 B Switch - Intake Air Heater E-8 C
Lamp - Neutra11zer Override D-4 B Switch - Key Start E-9 C
Lamp - Ride Control F-4 B Switch - Kickout Neutra11zer (1T38F Only) F-10 C
Lamp - Turn Indicator (Left) F-4 B Switch - Lift Positioner A-1 44
Lamp - Turn Indicator (Left) F-4 B Switch - Neutra11zer C-1 45
Lamp - Turn Indicator (Right) D-4 B Switch - Parking Brake E-12 46
Motor - (Secondary Steering) A-14 5 Switch - Primary Steer Pressure A-14 47
Motor - Blower (2) C-3 15 Switch - Primary Steering (Att) B-13 47
Motor - Washer (Front) B-13 16 Switch - Running Lamp E-10 C
Motor - Washer (Rear) B-13 16 Switch - Secondary Steer Manual D-8 C
Motor - Wiper (Front) B-3 17 Switch - Secondary Steer Pressure A-14 5
Motor - Wiper (Rear) F-10 18 Switch - Secondary Steering (AU) B-13 5
Relay - Bosch Motor (Secondary Steering) A-14 5 Switch - Start Aid D-8 C
Relay - Start C-15 8 Switch - Start Aid Coolant E-14 22
Resistor - (Blower Motor) C-3 15 Switch-Stop Lamp C-1 45
Resistor - (Intake Air Heater) F-13 14 Switch - Tach/Speedo/Serv Meter Select F-8 C
Resistor - (Main Relay) C-14 8 Switch - Test/Enable F-8 C
Resistor - (Starter) F-14 19 Switch - Thermostat (Blower Motor) C-3 15
Sender - Fuel Level D-14 20 Switch - Transmission Auto/Manual D-11 C
Sensor - Articulation MgIe Position I-10 21 Switch - Transmission Downshift B-6 48
Sensor - Coolant Temp E-14 22 Switch - Transmission Neutralizer Override E-7 C
Sensor - Engine Speed C-13 23 Switch -Turn Signal D-6 B
Sensor - Hydraulic Temp B-14 24 Switch - Wiper (Front Intermittant) E-8 C
Sensor - Torque Converter Oil Temp C-13 34 Switch - Wiper (Rear) E-8 C
Sensor - Transmission Speed C-13 34 Tachometer/Speedometer E-4 A
Sensor - Wheel Speed (Left Front) A-2 25 TCS Display Module B-3 C
Sensor - Wheel Speed (Left Rear) I-11 26 Transmission Shifter F-3 B
Machine locations are repeated for components located close together.
A = Operator Compartment - Dash Console
B = Operator Compartment - Steering Column
C = Operator Compartment - Right Console
©
1997 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR6716-02
August 1997
938F Wheel Loader and
Electrical System
938F:
1KM1-UP
2RM1-UP
8SM-UP
7SN1-UP
IT38F:
5DR1-UP
6FN1-UP
IT38F Integrated Toolcarrier
AAA
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
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
34
36
38
7
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
63
62
61
60
59
57
58
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
34
36
38
7
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
63
62
61
60
59
58
57
Machine Harness Connector and Component Locations
E10084
GN-18
GN-18
L18L18
L17
L17
L17L17
L18
L18
L19
L19
L19
L19
3
1
2
619-GN-14
200-BK-14
200-BK-14
606-GY-14
605-YL-14
6
761-GY
B766-WH
LIFT POSITIONER SW
3E-7844
BU-18
OR-18
BK-18
SOLENOID
GROUND
+ BATTERY
FORWARD
HORN
7T-0970
114-GN
322-GY
BUCKET POSITIONER SW
3E-7843
200-BK-14
200-BK-14
5
BU-18
BK-18
OR-18
+ BATTERY
SOLENOID
GROUND
RIDE
CONTROL
SOLENOID
VALVES
6T-8046
976-OR-18
975-WH-18
619-GN-14
B766-WH
762-YL
G
G
975-WH
976-OR
4
B412-YL-18
LEFT TURN
LAMP
3E-6466
4
A
1
2
964-BU
G
A
B
1
2
5
RIGHT TURN
LAMP
3E-6466
12
FLOOD
LAMP
9X-1439
11
6
FLOOD
LAMP
9X-1439
6
1
2
10
9
8
7
4
5
A
B
GROUND
VS
SIGNAL
OR-18
BK-18
WH-18C
138-GN-18
251-BK-18
B412-YL-18
1
C
114-GN
NOTE H
A
B
C
138-GN-18
251-BK-18
B413-PU-18
2
1
3
G
G
U
U
A
B
C
987-WH
3
3
4
B413-PU-18
251-BK-18
138-GN-18
B412-YL-18
B766-WH
322-GY
200-BK-14
200-BK-14
605-YL-14
606-GY-14
619-GN-14
761-GY
762-YL
975-WH
976-OR
2
1
1
975-WH-18
976-OR-18
4TH
FUNCTION
DIVERTER
SOL VALVES
8T-8808
2
5
7
1
8
2
6
9
10
11
12
G
A G
2
1
FORK
POSITIONER
SW
3E-7843
2
2
1
G
987-WH-18
200-BK-18
987-WH-18
200-BK-18
C
B
A
GROUND
SOLENOID
+ BATTERY
OR-18
BK-18
BU-18
B766-WH
964-BU
2
1
U
U
V
V
V
V
IT38F FRONT
IT38F FRONT
WLPMS LIFT
CYLINDER
PRESSURE
SENSOR
124-4672
619-GN-14
611-PU-14
606-GY-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14
G
G
G
987-WH
GN-18
GN-18
761-GY
762-YL
619-GN-14
619-GN-14
617-BR-14
614-PU-14
611-PU-14
611-PU-14
606-GY-14
606-GY-14
605-YL-14
114-GN
322-GY
GG
E933-YL-18
E932-PK-18
709-OR-18
A219-BK
A219-BK
709-OR-18
GROUND
SIGNAL
+V
C
B
A
A
B
C
+V
SIGNAL
GROUND
RIGHT FRONT WHEEL
SPEED SENSOR
3E-6955
LEFT FRONT WHEEL
SPEED SENSOR
3E-6955
E932-PK-18
E933-YL-18
709-OR-18
A219-BK
GG
GG
A219-BK-18
709-OR-18
E933-YL-18
E932-PK-18
G
1
2
3
4
4
3
2
1
G
HH
200-BK-14
200-BK-14
200-BK-14
200-BK-14
BK-18
RD-18
GN-18
BBB
BBB
BBB
BBB
617-BR-14
614-PU-14
611-PU-14
BBB
BBB
GN-18
GN-18
GN-18
RD-18
BK-18
B766-WH
200-BK-14
200-BK-14
B413-PU-18
251-BK-18
138-GN-18
G
G
ATT GROUND DRIVEN SUPPLEMENTAL STEERING
SUPPLEMENTAL
STEERING SW
3E-6429
PRIMARY
STEERING
PRESSURE SW
3E-6450
W
201-BK-18
417-GY-18
201-BK-18
416-OR-18
C
B
A
W
W
BK-18
BK-18
1
2
BK
RD
BU
A
B
C
11
12
9
136-GN-18
308-YL-18
403-GN-18
326-PU-18
1
3
4
5
6
7
484-YL-18
8
BK
RD
BU
A
B
C
ARC SUPPRESSOR
118-5597
ATT ELECTRIC SECONDARY STEERING
RD-0
727-GN-18
484-YL-18
10
RELAY
139-2599
BK-0
MOTOR
SECONDARY
STEERING
CONTROL
3E-5184
PK-18
BK-18
WH-18
BR-18
PU-18
BK-18
OR-18
YL-18
RD-18
GY-18
GN-18SEC STR RLY
UNUSED
C
B
A
BK
RD
BU
9
8
7
6
5
4
3
1
2
1
2
ATT ELECTRIC SECONDARY STEERING
200-BK-18
201-BK-18
416-OR-18
PRIM PRES SW
GROUND
UNUSED (GND)
KEY SWITCH
+ BATTERY
UNUSED
326-PU-18
200-BK-18
403-GN-18
417-GY-18
200-BK-18
308-YL-18
136-GN-18
727-GN-18
SHUTDOWN SOL
KKK
KKK
KKK
KKK
KKK
KKK
KKK
KKK
A
ALT R TERM
< TO B+ TERMINAL BLOCK 8C-6358
417-GY-18
201-BK-18
416-OR-18
L81
L85
L91
L91
L93
L93
L93
L87
L87
L85
L85
L90 L90
L90
L87
L87
L85
L84 L84
L89
L89
L86
L86
L86
L83
L83
L83
L83
L77L77
L80 L80
L81
L77 L77
L89
L83
L84
L86
GGG
GGG
FFF
306-GN
304-WH
A
ENGINE
SPEED SENSOR
3E-8848
450-YL-18
202-BK-18 BK-18
WH-18
A
2
A
A
FFF
MUR440
ARC SUPPRESSOR
106-8704
EEE
EEE
EEE
EEE
2
1
A
A
112-PU
112-PU
TCS10A
1
2
2
1
RD-0
NNN
LLL
LLL
MMM
105-BR
105-BR
A
A
A
A
A
BRAKE OIL
PRESSURE SW
3E-7693
BK
RD
BU
1
2
3
BK-18
BK-18
C
B
A
201-BK-18
201-BK-18
BOSCH
MOTOR/
RELAY
139-2327
D
201-BK-18
200-BK-18
200-BK-18
200-BK-18
522-WH-14
513-OR-14
A/C HI-LOW
PRESS SW
114-5333
NOTE A
2
2
311-WH
1 202-BK-18
2
1
2
521-YL-14
167-OR
A
A
308-YL-18
BK
BK
727-GN-18
308-YL-18
513-OR-14
A
710-GN-18
200-BK
A
A
A
521-YL-14
522-WH-14
BK-18
RESISTOR
6T-7864
1
2
308-YL
309-GY
201-BK-18
432-PK-18
E
RD-0
BK-0
BK-0
WH-18
BK-18202-BK-18
710-GN-18
TRANSMISSION
SPEED SENSOR
6V-2455
443-YL-18
E
TORQUE
CONVERTER
OIL TEMP
SENSOR
4W-9972
°T
D
HYDRAULIC
TEMP SENSOR
4W-9972
1
202-BK-18
A
PRIMARY STEER
PRESSURE SW
3E-6450
BK-18
A
102-BU-14
A
A
A
SECOND STEER
PRESS SW
3E-6450
A
A
START
RELAY
3E-0075
A
A
BK-0
A
200-BK
200-BK
507-WH
506-PU
REAR
WASHER
7T-8890
FRONT
WASHER
7T-8890
MOTORMOTOR
GN-14
GN-14
A
A
A
D
200-BK-18
RD-0
RD-0
D
101-RD
114-GNFORWARD HORN10A
105-BR
308-YL
306-GN
310-PU
112-PU-4
ENGINE
SHUTDOWN
SOLENOID
8C-3663
443-YL-18
D
201-BK-18
ENGINE
OIL SW
3E-6455
405-GY-18
201-BK-18
BU-18
RD-18
BK-18
513-OR-14
18
20
19
17
16
15
14
5
RELAY PANEL
15A
80A
109-OR-4
10A
4
3
7
2
11
10
6
8
12
9
1
13
DIAGNOSTIC CONNECTOR
308-YL
112-PU
109-OR
101-RD
MAIN
RELAY
101-7740
RELAY PANEL
OR-8
304-WH
306-GN
MAIN
BREAKER
9S-4693
OR-4
BUS BAR
7V9275
ALTERNATOR
BREAKER
9S-4693
80A
C
B
1
112-PU-4
A
167-OR
522-WH-14
326-PU
405-GY-18
442-GY-18
308-YL
308-YL
310-PU
310-PU
101-RD-4
109-OR-4
304-WH-8
306-GN
308-YL
105-BR
102-BU-14
310-PU
311-WH
302-OR
207-BK
203-BK
202-BK-18
L77
200-BK-18
442-GY-18
101-RD
101-RD-14
101-RD
KEY
BACKUP ALARM
STOPLAMPS
101-RD
101-RD-14
101-RD-4
A/C CLUTCH
SOLENOID
134-3999
326-PU
301-BU-10
200-BK-10
105-BR
121-YL
3K-8782 FUSE
4K-5122 FUSE
HOLDER
130-GN10A
10A
102-BU-14
RUNNING LAMP BKR
3T-2662
°
L80
T
308-YL-18
PRIM ACTION
CONN 1
CONN 2
CONN 7
CONN 9
CONN 9A
TO LOC A-12
DIAGNOSTIC
CONNECTOR
167-OR
2
1
A219-BK
1
2
944-OR-18
2
1
945-BR-18
A
B
RD
RD
D
L95
L95
L95
L95
L94 L94
L94
L75 L75
L75
L76
L94
L3 L3
L3
RD
RD
C
B
A
JJ
JJ
JJ
HH
HH
HH
HH
HH
HH
HHHHHH
6
5
4
3
2
RD
RD
1
167-OR
JJ
JJ
HH
HH
709-OR-18
E923-PK-18
E924-YL-18
E925-OR-18
E926-BU-18
E929-GY-18
167-OR
A219-BK
E936-WH
E933-YL-18
E934-OR-18
E935-GN-18
E932-PK-18
E930-BU-18
8
7
A219-BK
E927-GN-18
E928-WH-18
944-OR-18
A219-BK
167-OR
A219-BK
WH-18
+BAT
GND
SIG
BK-18
RD-18
UNUSED 36
UNUSED
30UNUSED
27
UNUSED
E932-PK-18
E923-PK-18
E925-OR-18
E924-YL-18
E926-BU-18
HARN CODE 3
HARN CODE 2
E936-WH
945-BR-18
RIGHT FRT BRK PROP SOL
16
10
15
944-OR-18
31
11
A219-BK
A219-BK
E936-WH
E933-YL-18
E932-PK-18
709-OR-18
A219-BK
709-OR-18
6
A219-BK
E935-GN-18
E934-OR-18
E936-WH
E935-GN-18
A219-BK
5
4
3
39
32
UNUSED
E934-OR-18
ART ANGLE SENSOR 5KHZ PWM
SOL GND RETURN
UNUSED
UNUSED
UNUSED
RIGHT REAR BRK PROP SOL
E936-WH
LEFT REAR BRK PROP SOL
37PILOT ON/OFF SOL
38
LEFT FRT BRK PROP SOL
LEFT FRT WHL SPD SENSOR
RIGHT FRT WHL SPD SENSOR
HARN CODE 1
23
22
9
E930-BU-18
8
E933-YL-18
UNUSED
UNUSED
E934-OR-18
2
34
E936-WH
35
17
26
25
29
UNUSED
GROUND
18
13
28
20
21
CAT DATA LINK -
CAT DATA LINK +
7
33
14
19
12
TEST/ENABLE SW TO GND
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
TEST/ENABLE SW TO GND
+ BATTERY
UNUSED
HARN CODE 0
RIGHT REAR WHL SPD SENSOR
24
LEFT REAR WHL SPD SENSOR
1
709-OR-18
167-OR
E933-YL-18
E932-PK-18
E930-BU-18
A219-BK
A224-BK
A225-BK
6
A226-BK
A223-BK
945-BR-18
A219-BK
RD
RD
GN-18
GN-18
1
2
2
1
A219-BK
TCS CONTROL 137-2073
E935-GN-18
E934-OR-18
8V SENSOR POWER SUPPLY
709-OR-18
A219-BK
A219-BK
709-OR-18
GROUND
SIGNAL
+V
C
B
A
A
B
C
+V
SIGNAL
GROUND
5
E929-GY-18
E926-BU-18
E926-BU-18
E925-OR-18
E936-WH
E936-WH
E936-WH
E936-WH
E924-YL-18
E923-PK-18
4
E930-BU-18
E929-GY-18
A219-BK
E935-GN-18
E928-WH-18
E927-GN-18
40
3
2
E929-GY-18
1
A226-BK
A225-BK
A224-BK
A223-BK
167-OR
6
5
4
3
2
CAB
GROUND
E925-OR-18
RIGHT REAR WHEEL
SPEED SENSOR
3E-6955
LEFT REAR WHEEL
SPEED SENSOR
3E-6955
RIGHT REAR
PROP SOL
124-3052
LEFT REAR
PROP SOL
124-3052
RIGHT FRONT
PROP SOL
124-3052
LEFT FRONT
PROP SOL
124-3052
ON/OFF
PILOT SOL
116-4152
ARTICULATION ANGLE
POSITION SENSOR (5KHZ PWM)
105-3769
BK-18
BK-18
BK-18
BK-18
BK-18 1
2
3
4
5
6
SERVICE
CODE PLUG
FOR BLEEDING
BRAKE OIL
119-1605
STD HARNESS
CODE PLUG
119-1604
E924-YL-18
E923-PK-18
BK-18
E930-BU-18
E936-WH
E926-BU-18
E924-YL-18
E925-OR-18
E923-PK-18
1
709-OR-18
E936-WH
A219-BK
167-OR
ETAC CONTROL ATTACHMENT
TCS CONTROL ATTACHMENT
E
C
F
G
H
J
CONN 17
CONN 16
CONN 16A
CONN 18
CONN 19
SEC STEER
MANUAL SW
6T-6066
136-GN-18
727-GN-18
1
2
L102
L102
L102
L102
L66
L15
L64
L13
L57
L56
L57
L63
L63
L67
L15
L65
L65
L65
L66
L66
L66
L64
L61
L61 L61
L61
L64
L64
L64
L64
L64
L64
L62
L62
L56
L55
L55
L55
L96
L54
L52
L62
CONVERTER
119-1733
120-YL
120-YL
A513-PK-18
120-YL
1
2
727-GN-18
3
RR
RR
RR
RR
N
1
2
4
5
3
6
8
4
200-BK
614-PU
129-BU
126-PK-18
720-PU-18
910-YL-18
E701-PK-18
7
FRONT RH SW PANEL
FRONT RH SW PANEL
6T-6066
129-BU
200-BK
5
6
+24 V BATTERY IN
+24 V SWITCHED IN
GROUND
+12 V MEMORY OUT
200-BK-14
120-YL
135-BU
T
T
T
T
TT
7
6
SW POS
UP
01
1
10
ENABLE
RR
OFF
TEST
E928-WHE927-GNSWITCH
TEST/ENABLE SW OPERATION
1CENTER
DOWN
INPUTS (1=SW CLSD, 0= SW OPEN)
E927-GN-18
E928-WH-18
E928-WH-18
E927-GN-18
A219-BK-18
118-GY
201-BK-18
J
J
J J
J
J
P
J
T
T
T
T
T
P
T
P
P
200-BK-14
200-BK-14
200-BK-14
200-BK-14
118-GY
200-BK-14
PPP
614-PU-14
614-PU-14
T
PPP
PPP
T
202-BK-18
200-BK-14
310-PU
126-PK-18
E701-PK-18
D744-WH-18
720-PU-18
614-PU-14
614-PU-14
4
3
614-PU-14
506-PU
507-WH
511-BR
307-OR-18
326-PU
118-GY
118-GY
506-PU
502-OR
501-GN
500-BR
118-GY
118-GY
308-YL
A219-BK-18
TEST/ENABLE SW
7T-2081
512-GN
RH SPEAKER AS.
6T-7695
LH SPEAKER AS.
6T-7695
T
T
200-BK-14
509-WH
508-PU
T
T
T
T
6
614-PU
614-PU
200-BK
PANEL
LAMP
7N-5876
(QTY 2)
308-YL
T
200-BK-14
A513-PK-18
200-BK
E702-OR-18
E928-WH-18
4
3
BK-18
WH-18
615-YL
135-BU
DOME LAMP
6T-4864
2
200-BK
C
01
11
10
D744-WHD743-GN
AUTO
OFF
ON
SW POS
INPUTS (1=SW CLSD, 0=SW OPEN)
ATT AUTO RIDE CTRL SW OPERATION
B
A
6
8
3
7
614-PU
105-BR
2
1
1
118-GY
9
6
7
P
8
200-BK
5
10
11
102-BU-14
120-YL
615-YL
603-PK
105-BR
1
5
TO
RADIO
NOTE D
6
102-BU-14
200-BK-14
N
200-BK-14
120-YL
102-BU-14
200-BK
3
5
200-BK-14
2
105-BR
12
4
L63
L67
2
2
1
3
L67
507-WH
614-PU
200-BK
105-BR
307-OR-18
326-PU
308-YL
614-PU
200-BK
614-PU
614-PU
200-BK
PANEL LAMP
7N-5876
504-YL
503-BR
KEY/WIPER SW PANEL
136-GN-18
614-PU
FRT RH SW PANEL
1
TACH/SPEEDO/SERV METER SELECT SW
6T-6066
T
E735-PU-18
200-BK
614-PU
D743-GN-18
T
202-BK-18
202-BK-18
E702-OR-18
201-BK-18
T
T
201-BK-18
E735-PU-18
E735-PU-18
202-BK-18
373-GN-18
DOWN
614-PU-14
P
A219-BK-18
E927-GN-18
202-BK-18
614-PU
N
200-BK
200-BK
200-BK
603-PK
CENTER
UP
202-BK-18
P
T
200-BK
8
REAR WIPER SW
3T-6655
4
4
1
910-YL-18
200-BK-14
200-BK-14
TO
RADIO
NOTE D
N
200-BK-14
200-BK-14
200-BK
200-BK
200-BK
200-BK
3
505-BU
2
PANEL LAMP
7N-5876
118-GY
PANEL LAMP
7N-5876
D743-GN-18
E702-OR-18
D743-GN-18
D744-WH-18
E701-PK-18
373-GN-18
T
T
308-YL
200-BK
D744-WH-18
614-PU
200-BK
200-BK
N
105-BR
614-PU
200-BK
614-PU
310-PU
2
200-BK
N
N
+12 V SWITCHED OUT
FRONT RH SW PANEL
1
KEY/WIPER SW PANEL
200-BK-14
200-BK
TRANSMISSION
NEUTRALIZER
OVERRIDE SW
7X-6396
200-BK
200-BK-14
603-PK
N
373-GN-18
120-YL
615-YL
200-BK-14
135-BU
509-WH
508-PU
GROUND
UPPER
CAB
GROUND
INTAKE AIR HTR SW
6T-6066
512-GN
5
308-YL
3
6
2
5
511-BR
506-PU
500-BR
126-PK-18
501-GN
502-OR
308-YL
126-PK-18
910-YL-18
720-PU-18
PANEL
LAMP
7N-5876
200-BK-14
118-GY
AUTO RIDE
CONTROL SW
7T-2081
614-PU
J
5
4
200-BK-14
FOR
AIR
SEAT
200-BK-14
614-PU-14
118-GY
8
7
6
5
4
3
2
1
BR-18
BU-14
YL-14
WH-14
BK-18
RD-18
RD-14
PANEL
LAMP
7N-5876
WASH
PARK
LOW
HIGH
GROUND
B+
B+
J
J
200-BK
614-PU
KEY START SW
9G-7641
108-BU-14
CIGAR LIGHTER
9W-0335
126-PK-18
129-BU
SW
ST
ON
OFF
B
S
C
R
B
WP
L
H
B
FRONT INTERMITTANT
WIPER SW
3E-0155
START AID SW
CONN 27
BK-18
BK-18
L88
L88
RD-00
L92
L79
L92
L88
L92
L91
L78
L82
L92
L91L91
L88
L88
L87
L87L87
L85L85
L91
L89
L93
L92
L92
L79
L89
L84
L89
L84
L89
L84
4
3
1
2
1
2
4
2
1
T
S RD-18
WH-18
BK-18
A
1
2
JJ
1
A
A
WH-18
PU-18
2
B
C
C
207-BK
NNN
AA
AA
MMM
EE
EE
CC
BB
BB
DD
B
A
G
T
S
1
2
309-GY
2
1
200-BK
200-BK
200-BK
13
7
14
17
15
18
11
9
24
22
21
12
2
3
5
25
4
6
8
10
23
16
201-BK-18
ENGINE GROUND
TO LICENSE
PLATE LAMP
20
201-BK-18
RD-00
RD-00
TO BATTERY B+
TO STARTER MOTOR
405-GY-18
442-GY-18
302-OR
2
D
200-BK-14
1
334-BU-18
109-OR-4
304-WH-8
RELAY
118-3534
200-BK-2OR-2101-RD-2
INTAKE AIR
HEATER
6I-4753BUSS BAR
9W-0742
NOTE: BUSS BAR REQUIRED ON
START RECEPTACLE.
200-BK-14
200-BK-14
200-BK
109-OR-4
X
D
D
D
X
D
D
D D
Y
200-BK-10
AA
DD
CC
D
200-BK-14
101-RD-4
304-WH-8
109-OR-4
1
D
403-GN-18
441-OR-18
201-BK-18
D963-BU-18
311-WH
200-BK
207-BK
302-OR
RESISTOR
3E-7842
309-GY
TO
ENGINE
TO
FRAME
BK-00
NEG POS
301-BU-10
STARTER
9X-9995
302-OR
207-BK
301-BU
DISCONNECT SW
7N-0718
BK-00
D
RD-00
BK-00
BK-00
BK-00
G S
MTR BAT
MOTOR
RD-00
BK-00
WH-18
BK-18
OR-18
SIGNAL
+8V
GROUND
12V BATTERY
3T-5760 STD
9X-3404 ATT
D963-BU-18
COOLANT TEMPERATURE SENSOR
100-3055
201-BK-18
441-OR-18
ENGINE
GROUND
BK-6
R
D+B+
ALTERNATOR
9W-3043
301-BU
AUXILIARY
START
RECEPTACLE
9X-5629
301-BU-10
311-WH
301-BU
200-BK
BK
BK
COOLANT SW
3E-6449
°T
POSNEG
BK-00
RD-00
RD-0
NOTE: TERMINAL BLOCK 8C-6358
REQUIRED WITH ATT JUMP RECPT
OR SECONDARY STEERING
326-PU
RD-0
BK-0
RD-18
BK-18
606-GY-14
A
608-GN
C
A
C
B
521-YL-14
B
A
604-OR
B
C
A
334-BU-18
975-WH
1
604-OR
H
H
H
200-BK-14
200-BK-14
200-BK-14
2
604-OR
101-RD-4
12
11
10
1
604-OR
606-GY-14
2
6
4
8
7
5
975-WH
3
2
605-YL-14
9
522-WH-14
521-YL-14
1
200-BK-14
H
H
RD-18
BK-18
A
H
FLOOD
LAMP
9X-1439
608-GN
200-BK-14
200-BK-14
604-OR
BK-18
WH-18
RD-18
STOP/TAIL/PARK LAMP
130-3453
614-PU-14
RIGHT TURN LAMP
3E-6466
LEFT TURN LAMP
3E-6466
BACKUP ALARM
3T-1815
121-YL
321-BR-18
606-GY-14
H
605-YL-14
200-BK-14
617-BR-14
STOP/TAIL/PARK LAMP
130-3453
RD-18S
T WH-18
BK-18
H
604-OR
200-BK-14
H
608-GN
200-BK-14
H
FLOOD
LAMP
9X-1439
321-BR-18
121-YL
200-BK-14
614-PU-14
604-OR
606-GY-14
608-GN
617-BR-14
605-YL-14
617-BR-14
203-BK
203-BK
AA
614-PU-14
3
4
2
1
4
3
2
1
BK-18
RD-18
200-BK-14
614-PU-14
604-OR
606-GY-14
200-BK-14
3
BK-18
RD-18
BK-18
WH-18
RD-18
605-YL-14
200-BK-14
200-BK-14
617-BR-14
S
T
604-OR
RH TURN
LAMP
107-4402
NOTE F
STOP/TAIL/
PARK LAMP
107-4401
NOTE F
STOP/TAIL/
PARK LAMP
107-4401
NOTE F
LH TURN
LAMP
107-4402
NOTE F
RH REAR
FRAME
GND BOSS
203-BK
FUEL LEVEL
SENDER
134-7262
TO HARN H
TO HARN H
LL
LL
LL
KK
KK
LIGHTING GP-ROADING 112-1589 (COSA)
Y
A
2
1
FOR COSA
ROADING
SEE ABOVE
(HARN LL)
FOR COSA
ROADING
SEE ABOVE
(HARN KK)
H
12V BATTERY
3T-5760 STD
9X-3404 ATT
614-PU-14
614-PU-14
START AID
SOLENOID
3E-6332
D
2
1
D
D
311-WH
310-PU
310-PU
NOTE: 4 GA GROUND WIRE
WILL BE REQUIRED IF
75A ATT ALTERNATOR
IS OFFERED.
+
D
A
A
-
201-BK-18
447-PK-18
B-
19
RD-00
A
522-WH-14
326-PU
403-GN-18
442-GY-18
405-GY-18
WW
VV
UU
UU TT
TT
SS
167-OR
H
KK
H
H
617-BR-14
G
SS
START AID
MACHINES EQUIPPED WITH
CONN 4
CONN 3
CONN 5
CONN 6
CONN 4A
CONN 6A
LOC D-15
LOC E-15
A
C
B
1
2
12
11
10
1
2
6
4
8
7
5
3
2
9
1
RD-18
BK-18
608-GN
604-OR
604-OR
200-BK-14
200-BK-14
200-BK-14
606-GY-14
605-YL-14
200-BK-14
H
RD-18
A
H
FLOOD
LAMP
9X-6775
608-GN
200-BK-14
200-BK-14
604-OR
STOP/TAIL/PARK LAMP
3E-6467
614-PU-14
RIGHT TURN LAMP
3E-6466
LEFT TURN LAMP
3E-6466
BACKUP ALARM
3T-1815
121-YL
321-BR
606-GY-14
H
605-YL-14
200-BK-14
617-BR-14
STOP/TAIL/PARK LAMP
3E-6467
RD-18S
T WH-18
BK-18
H
604-OR
200-BK-14
H
608-GN
200-BK-14
H
FLOOD
LAMP
9X-6775
321-BR-18
121-YL
200-BK-14
614-PU-14
604-OR
606-GY-14
608-GN
617-BR-14
605-YL-14
617-BR-14
203-BK
612-GY
203-BK
H
614-PU-14
614-PU-14
H
H
617-BR-14
BK-18
200-BK
121-YL
321-BR-18
AAA
612-GY
612-GY
121-YL
612-GY
612-GY
604-OR604-OR
614-PU-14
614-PU-14
605-YL-14
608-GN
606-GY-14
30
87a
87
86
H
200-BK-14
85
200-BK-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14
3
1
2
2
1
2
1
4 4
3
1
2
2
1
AAA
AAA
606-GY-14
H
BK-18
WH-18T
S RD-18
B
C
A
S
T
G
G
T
U
A
LH
STOP/TAIL/
PARK/TURN
LAMP
4Y-3460
NOTE G
BK
YL-18
HHH
HHH
BK
PU-18
OR-18
BBB
YL
LICENSE PLATE LAMP
5A-3808
NOTE G
BK
BK
GY-18
U
T
G
G
A
HHH
BACK UP LAMP
4Y-3448
NOTE G
RH
STOP/TAIL/
PARK/TURN
LAMP
4Y-3264
NOTE G
BK-18
BR-18
HHH
BRAKE LAMP
RELAY
4Y-6135
NOTE G
BACKUP
ALARM
3T-1815
NOTE G
AAA
AAA
612-GY
200-BK
HHH
H
HHH
H
AAA
321-BR-18
121-YL
200-BK
HHH
HHH
HHH
HHH
121-YL
HHH
BR-18
BK-18
BACK UP LAMP
4Y-3448
NOTE G
LIGHTING GP-JAPANESE ROADING 4Y-9526
612-GY
604-OR
612-GY
605-YL-14
614-PU-14
604-OR
614-PU-14
612-GY
1
2
3
4
1
2
4
3
121-YL
321-BR-18
605-YL-14
H
TO
DISCONNECT
SW
BBB
614-PU-14
H
H
H
S
T
PU-18
OR-18
CONN 55
CONN 56
CONN 57
CONN 58
CONN 59
CONN 60
CONN 5A
CONN 58A
AT LOC F-14
AT LOC D-15
L76
L48
L47
L74
L81
L82
L81
L79
L77
L78
L79
L78
L77
L81
L89
L82
L83
L84
L74
L86
L74
L74
L86 L86
L80
L74
L76
L75
L75
L47
L47
L47
L47
L48
L48
L48
L48
L69
L68
L69
L68
L69
L68
L49
L60
L50 L50
L58
L51
L51
L52
L34
L34
L46
L45
SECONDARY STEER136-GN-18
REAR DEFROSTER
A219-BK
JJ
GN
2
1
6
5
4
3
4TH FUNCTION
FF
F
FFF
F
C
C
CCCC
C
F
C
C
C
C
C
W
NOTE: JUMPER PLUG "W" MUST BE
REMOVED WHEN MACHINE IS EQUIPPED
WITH ATTACH E/H SECONDARY STEERING
201-BK-14
201-BK-14
201-BK-14
B
C
A
C
F
P
GN
GN
416-OR-18
201-BK-18
417-GY-18
GN
975-WH
200-BK-14
200-BK-14
200-BK-14
200-BK
604-OR
201-BK-18
201-BK-18
405-GY-18
416-OR-18
432-PK-18
441-OR-18
403-GN-18
417-GY-18
321-BR-18
614-PU-14
606-GY-14
605-YL-14
617-BR-14
608-GN
2
F
GN
GN
4
A
1
164-WH-18
1
GN
GN
D963-BU-18
507-WH
130-GN
201-BK-18
105-BR
308-YL
306-GN
310-PU
GN
112-PU-4
114-GN
506-PU
442-GY-18
P
GN
326-PU
102-BU-14
521-YL-14
522-WH-14
GN
105-BR
102-BU-14
164-WH-18
11
12
2
16
5
11
17
24
10
1
7
23
4
12
22
2
20
21
8
6
18
19
3
15
13
9
14
5
6
1
308-YL-18
308-YL-18
1
2
E
7
8
2
TERMINAL STUD 9G-8451
975-WH-18
E930-BU-18
E936-WH
E926-BU-18
E924-YL-18
E923-PK-18
E925-OR-18
10A
901-WH-18
755-OR-18
754-BU-18
752 YL-18
751-GN-18
202-BK-18
974-PU-18
978-GN-18
443-YL-18
710-GN-18
202-BK-18
900-PU-18
202-BK-18
978-GN-18
975-WH
975-WH
976-OR-18
15A
974-PU-18
E930-BU-18
E926-BU-18
E925-OR-18
E924-YL-18
E923-PK-18
E936-WH
975-WH
2
975-WH
975-WH
975-WH
976-OR
Z
975-WH
403-GN-18
136-GN-18
326-PU-18
727-GN-18
975-WH
A
TRANSMISSION
TRANSMISSION
GN
754-BU-18
752-YL-18
751-GN-18
755-OR-18
900-PU-18
901-WH-18
975-WH
450-YL-18
112-PU-4
2
1
944-OR-18
945-BR-18
5
3
2
4
6
2
2
E
F
F
975-WH
F
F
128-PK
164-WH-18
116-BR
127-OR
113-OR-18
KICKOUTS
AUTOSHIFT
REAR FLOODS
FRONT FLOODS
SEMS
112-PU-14
112-PU-14
15A CIRCUIT
BREAKER
6N-8589
E928-WH-18
A
A219-BK-18
9
E927-GN-18
BLOWER MOTORS124-GN-14
F
15A
FUSE HOLDERS (QTY 14)
4K-5122
10A
10A
10A
10A
447-PK-18
201-BK-18
E
10A FUSES (QTY 13)
3K-8782
VOLTAGE CONV
PAYLOAD MEAS SYS
WIPER MOTORS
TRANSMISSION SHIFTER
BEACON
CIGAR LIGHTER
1
1
112-PU-4
120-YL
10A
138-GN-18
118-GY
126-PK-18
C
443-YL-18
710-GN-18
334-BU-18
144-GN
112-PU
112-PU
L77
F
112-PU
112-PU
112-PU
112-PU
112-PU
167-OR
112-PU
112-PU
112-PU
112-PU
E927-GN-18
E928-WH-18
112-PU
112-PU
112-PU
10A
133-OR
945-BR-18
10A
Z
10
1
944-OR-18
3
975-WH
1
202-BK-18
10A
10A
10A
10A
EEE
EE
SOL 1
FWD HIGH
E
10A
SOL 2
REV
SOL 3
FWD LOW
334-BU-18
SOL 4
SPD 1
SOL 6
SPD 3
10A
SOL 5
SPD 2
A219-BK-18
129-BU
150-OR-14
CST SOLENOID
VALVES (24V)
3E-8591
(QTY 6)
15A FUSE
8M-8948
CONN 11
CONN 10
CONN 12
CONN 13
CONN 14
CONN 22
CONN 21
CONN 20
201-BK-18
2
L31
L5
L41
L12
L12
L6
L13
L13
L11
L6
L6
L30
L30
L10
L10
L30
L31
L31
L31
L62
L62
L45
L45 L45
L40
L41
L37
L37
L37
L36
L36
L35
L42
L11
L35 L35
L42
L2
L38
L40
L39
L38
L40
L39
L38
L7
L7
L7
L7
L12
L8
L8
L6
L6 L6
L13
L13
L9
L4
L4
L2
L2
1
964-BU
987-WH
MM
MM
MM
200-BK-14
251-BK-18
202-BK-18202-BK-18 201-BK-18
944-OR-18
945-BR-18
910-YL-18
E702-OR-18
439-YL-18
126-PK-18
E701-PK-18
614-PU-14
102-BU-14
126-PK-18
124-GN-14
403-GN-18
113-OR-18
615-YL
307-OR-18
E701-PK-18
439-YL-18
E702-OR-18
910-YL-18
D963-BU-18
D963-BU-18
201-BK-18
201-BK-18
P
611-PU-14
727-GN-18
136-GN-18
537-GN-14
8
15
6
17
9
18
16
7
3
10
11
1
5
20
21
13
2
14
19
12
23
22
4
24
409-OR-18
432-PK-18
403-GN-18
321-BR-18
306-GN-18
720-PU-18
307-OR-18
443-YL-18
322-GY
322-GY
BK/YL-18
VALVE GP-
PILOT
6E-2747
167-OR
E936-WH
E923-PK-18
E924-YL-18
E925-OR-18
E926-BU-18
E930-BU-18
GROUND STRAP 7G-1060
E930-BU-18
E926-BU-18
E925-OR-18
E924-YL-18
E923-PK-18
E936-WH
167-OR
A
P
2
5
FORWARD
HORN SW
2T-3360
3
4
CAB
GROUND
6
1
416-OR-18
405-GY-18
447-PK-18
P
442-GY-18
441-OR-18
417-GY-18
409-OR-18
963-GN
113-OR-18
MM
200-BK-14
200-BK-14
978-GN-18
447-PK-18
201-BK-18
201-BK-18
611-PU-14
DOWN
SHIFT
OPEN
CLOSEDOPEN
CLOSED
202-BK-18
720-PU
114-GN
130-GN
604-OR
126-PK-18
610-OR-14
974-PU-18
202-BK-18
TERM
3 TO 4
201-BK-18
611-PU-14
200-BK-14
A
B766-WH
522-WH-14
606-GY-14
605-YL-14
416-OR-18
617-BR-14
417-GY-18
614-PU-14
200-BK-14
405-GY-18
124-GN-14
521-YL-14
201-BK-18
762-YL
432-PK-18
200-BK-14
447-PK-18
441-OR-18
442-GY-18
B766-WH
200-BK-14
202-BK-18
TRANSMISSION
DOWNSHIFT SW
9X-4959
521-YL-14
611-PU-14
606-GY-14
605-YL-14
321-BR-18
306-GN
TO ENGINE
END FRAME
720-PU
BUCKET/FORK
DETENT SOLENOID
201-BK-18
43
2
976-OR
CCC
144-GN
720-PU-18
975-WH
E955-OR-18
SWITCH OPERATION
200-BK
251-BK-18
188-WH-18
TERM
1 TO 2
DISENGAGED
1
ENGAGED
200-BK
200-BK
200-BK-14
201-BK-18
B766-WH
963-GN
761-GY
200-BK
FLOAT DETENT
SOLENOID
614-PU-14
200-BK-14
615-YL
307-OR-18
720-PU-18
E735-PU-18E735-PU-18
201-BK-18
LIFT DETENT
SOLENOID
CONN 38
B-701139-5932JJJ
NOTE CB-1300113-9115
NOTE GH-14014Y-8528H
NOTE GH-14014Y-8546AAA
ATT GH-15004Y-9967AAA
ATT GG-14004Y-9529BBB
ATT GH-14014Y-9530HHH
H-4/I-4
H-5/I-5
H-6
NOTE G: FOR JAPAN ROADING ONLY
ATT G014Y-4579ZZ
NOTE G014Y-8547U
NOTE G014Y-8527G
NOTE H: PCS-II NOT OFFERED ON IT38F
STD 938F
STD 938F
ATT 938FV
ATT 938FU
C-1501106-3240
C-1500106-3237
GGG
FFF
00109-6280 STDF-10
ATTF-1001119-2090DDD
DDD
00112-1930 E-1
E-100
03
112-1929
W
JJ
HH
ATT
I-11
NOTE C: FOR GROUND DRIVEN SUPPLEMENTAL STEERING
D-7105-4358
ATT
ATT
ATT
ATT
ATT
ATT
C-10105-4359
F-14
F-14
F-14
F-14
ATTD-600111-9302QQ
03
D-1
ATTB-7
NOTE J: PREVIOUS CODE PLUGS ARE SHOWN AT (F-1)
ATTE-3
03
110-4290
109-0932
4E-7462MM
02130-4853
NOTE B: CONNECT TO ETAC LOCATED IN AREA A
D-6
CCC
V00 NOTE FB-5111-6228
D-8102-7529
A
ATT
ATT
ATTA-13
A-13
A-13
00
00
00
140-6309
140-6308
140-6094
ATTD-700139-7496
ATTA-1300141-1377
106-5505
KKK
PPP
NNN
MMM
LLL
A-1502
NOTE F: FOR COSA ROADING ONLY
C-1112-2960
106-6617
NOTE A: NORMALLY OPEN BEFORE REFRIGERANT CHARGE
C-1
E-13
05
00
01
01
00
02
00
03
Z
08
02
02
01
01
01
01
01
01
02
01
01
03
00
01
CABLE AS.
01
LOC
T
S
Q
B-1112-3638
03
I-11
ATTD-700113-5263RR
E-6
CAB
106-1036
00113-5219PP
IT38F
ATT
ATT
ATT
ATT
ATT
03
03
112-2374
112-2373
LL
KK
B-11
F-15
E-15
D-1/A-13106-3427
ATT
111-6230
9U-1950
7Y-3946
A-2/I-5
AND XMSN SHIFTER IN NEUTRAL
112-4428
4E-8100
X
EE
DD
CC
BB
AA
3P-3702
F-600101-2640
B-1/H-1
WIRE AS.
W
V
U
Y
P
N
L
J
H
G
F
E
D
C
110-4551
B
A
CHGPART NO.IDENT
HARNESS AS.
03
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
109-0933GG
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAUGE
G-300116-9230
FF
THE CAT LINK WIRES (944-OR & 945-BR) MUST BE TWISTED
109-7842EEE
938F
E-13108-7882
01105-1520
C-3
BBB
E-202
NOTE D: RADIO TO BE SPECIFIED BY CUSTOMER AND INSTALLED
BY DEALER
F-1400113-8445
ENGINE SPEED INFORMATION ARE SENT TO CATERPILLAR
MONITORING SYSTEM VIA THE CAT DATA LINK FROM THE
POWERTRAIN CONTROL.
F-1400113-8449
B-5
E-14
7X-6015
F-2/D-24E-0630
B-11103-1091
NOTE
938F
F-1301113-8446
F-13
F-14
G
01
01109-3593
F-1300113-8448
WW
VV
UU
TT
SS
D-15128-2375
8Y-9603
4E-1188AAA
THIS SCHEMATIC IS FOR THE 938F/IT38F (103-5670 CHG03)
F-11
C-10
A-3
105-4347
111-6229
133-9692
125-2401
TOGETHER AT LEAST 1 TURN PER INCH
ACTUAL TRANSMISSION GEAR, MACHINE SPEED AND
A
DETENT LOCKOUT SW
9D-3721
B766-WH
B766-WH B766-WH
B766-WH 2
1
727-GN-18
136-GN-18
L34
L39
L33
L12
L51
L60
L50
L57L57
L58
L58
L51
L51
L54
L54
L32 L32
L32
L32
L52
L52
L52L52
L52
L96
L33
L33 L33
L33
L56
L55
L34
L34 L34
L34
L53
L53 L53
L31
L31
L12
L12
L45
L45
L46
L46
L46
L44
L44
L44
L43
L43
L43
L42
L40
L45
L36
L39
L42
L36
L41
L40
L45
L39
L12
L11
L31
L13
136-GN-18
167-OR
447-PK-18
944-OR-18
251-BK-18 2
5
6
3
200-BK-14
124-GN-14
126-PK-18
118-GY
138-GN-18
120-YL
113-OR-18
164-WH
128-PK
102-BU-14
105-BR
B412-YL-18
B413-PU-18
138-GN-18
D744-WH-18
D743-GN-18
944-OR-18
945-BR-18
JJJ
JJJ
JJJ
307-OR-18
615-YL
164-WH
4
129-BU
102-BU-14
120-YL
615-YL
603-PK
105-BR
503-BR
505-BU
504-YL
118-GY
443-YL-18
201-BK-18
200-BK-14
251-BK-18
2
945-BR-18
450-YL-18
945-BR-18
944-OR-18
1
450-YL-18
944-OR-18
200-BK
200-BK-14
200-BK-14
200-BK-14
306-GN
321-BR-18
617-BR-14
608-GN
522-WH-14
416-OR-18
417-GY-18
405-GY-18
432-PK-18
441-OR-18
521-YL-14
606-GY-14
201-BK-18
605-YL-14
201-BK-18
201-BK-18
114-GN
105-BR
326-PU
308-YL
D963-BU-18
102-BU-14
310-PU
3
507-WH
506-PU
614-PU-14
112-PU-4
130-GN
403-GN-18
604-OR
B766-WH
720-PU-18
910-YL-18
202-BK-18
450-YL-18
138-GN-18
126-PK-18
202-BK-18
A538-OR-14
201-BK-18
202-BK-18
E702-OR-18
251-BK-18
403-GN-18
A
974-PU-18
978-GN-18
202-BK-18
617-BR-14
608-GN
610-OR-14
604-OR
130-GN
114-GN
403-GN-18
D963-BU-18
102-BU-14
614-PU-14
310-PU
507-WH
506-PU
MM
126-PK-18
614-PU-14
E
167-OR
202-BK-18
P
D963-BU-18
B413-PU-18
138-GN-18
1
617-BR
126-PK-18
450-YL-18
201-BK-18
126-PK-18
126-PK-18
202-BK-18
610-OR-14
608-GN
308-YL
24
4
22
23
12
19
17
15
8
21
20
2
1
6
10
3
7
9
18
13
14
11
251-BK-18
5
16
614-PU-14
506-PU
507-WH
965-WH-18
326-PU
105-BR
969-YL-18
968-BR-18
310-PU
334-BU-18
334-BU-18
D743-GN-18
B999-GN-18
966-GY-18
251-BK-18
334-BU-18
977-YL-18
970-GN-18
971-YL-18
442-GY-18
973-BR-18
B412-YL-18
P
202-BK-18
972-BU-18
D744-WH-18
105-BR
105-BR
105-BR
617-BR-14
E701-PK-18
102-BU-14 102-BU-14
945-BR-18
617-BR-14
373-GN-18
202-BK-18
138-GN-18
202-BK-18
E735-PU-18
CCC
102-BU-14
373-GN-18
CONN 25
CONN 26
CONN 29
CONN 28
L24
L25
L97
L20L20
L20
L20
L22
L22
L22
L21L21
L21
L26
L23
L23
L23
L23
L27
L24
L24
L24
L27
L27
L26
L26
L25
L25
L28
L28
L28
L16
L16
L16
L97L97
L97
L8L8
L8
L5L5
L5
L62
L7L7
L12
605-YL-14
606-GY-14
611-PU-14
429-YL-18
429-YL-18
200-BK
200-BK
200-BK
614-PU
BBB
B
B
B
B
B
B
BB
B B
B
B
B
B
B
B
B
B
B
B
B
B
496-WH-18
496-WH-18
E702-OR-18
C
606-GY
910-YL-18
439-YL-18
B
615-YL
8
7
1
2
3
FF
B
B
201-BK-18
201-BK-18
B
4
5
6
113-OR-18
E702-OR-18
102-BU-14
605-YL-14
606-GY-14
AUTO RIDE
CONTROL LAMP
7N-5876
E701-PK-18
B
B
E735-PU-18
C413-YL-18
E707-GN-18
NEUTRALIZER
OVERRIDE LAMP
7N-5876
B
B
B
E701-PK-18
P
ANTENNA AS.
9W-3072
UNUSED SENSOR INPUT
BRK OIL TEMP 11
7
A
UNUSED SENSOR INPUT
OPERATOR SW INPUT
UNUSED SENSOR INPUT
UNUSED SENSOR INPUT
UNUSED SW INPUT
UNUSED SENSOR INPUT
UNUSED
UNUSED
611-PU
200-BK
HIGH BEAM
IND LAMP
7N-5876
B
1
200-BK
200-BK
663-GY
200-BK
662-YL
661-GN
C413-YL-18
201-BK-18
E707-GN-18
E708-PK-18
C414-BU-18
663-GY
661-GN
662-YL
614-PU
+ BATTERY
GROUND
LIGHTS ON
GAUGE LAMPS
TACH LAMP
200-BK
113-OR-18
C414-BU-18
E708-PK-18
E707-GN-18
201-BK-18
SPEEDO LAMP
201-BK-18
C413-YL-18
201-BK-18
200-BK
606-GY
6
5
4
2
1
3
TACH/SPEEDOMETER
100-5888
QUAD GAUGE
100-5895
LAMPS
7N-5876
GROUND
+V DISPLAY
CLOCK
MODULE LOAD
HARNESS CODE
DATA
200-BK
WH-18 4
2
1
3
201-BK-18
5
538-BR 2
6
200-BK
201-BK-18
201-BK-18
200-BK
113-OR-18
517-BU-14
3
614-PU
606-GY
201-BK-18
201-BK-18
291-BK-18
290-BK-18
274-BK-18
273-BK-18
272-BK-18
271-BK-18
270-BK-18
201-BK-18
4
605-YL
611-PU
E701-PK-18
BU-18
200-BK
YL-18
GN-18
OR-18
BK-18
6
5
3
1
2
FF
614-PU
113-OR-18
4 WH-18
E702-OR-18
200-BK
BK-18
OR-18
GN-18
YL-18
BU-18
944-OR-18
403-GN-18
411-PK-18
410-WH-18
201-BK-18
113-OR-18
945-BR-18
274-BK-18
273-BK-18
272-BK-18
271-BK-18
270-BK-18
442-GY-18
443-YL-18
441-OR-18
447-PK-18
432-PK-18
405-GY-18
416-OR-18
417-GY-18
290-BK-18
291-BK-18
8
9
28
10
36
201-BK-18
29
5
20
19
24
18
21
38
201-BK-18
34
35
14
23
6
16
22
12
3
32
40
31
37
30
1
200-BK-14
RIDE CONTROL
LAMP
7N-5876
E708-PK-18
C414-BU-18
611-PU
SECONDARY STEER
HARNESS CODE 4
HARNESS CODE 3
HARNESS CODE 2
HARNESS CODE 1
HARNESS CODE 0
NEUTRAL
25 MODULE CLOCK
CLUSTER +V
CAT DATA LINK +
CAT DATA LINK -
HYD TEMP SENSOR
CNVT TEMP SENSOR
FUEL LEVEL SENDER
COOL TEMP SENSOR
BRK OIL PRESS
ENG OIL PRESS
GROUND
HYD OIL LEVEL
DATA
HARNESS CODE 5
ALTERNATOR
PRIM STEER
+ BATTERY
SERVICE
CLEAR
7N-5876
LAMP
HAZARD FLASHER
411-PK-18
200-BK
MODULE LOAD
MODULE DATA
D963-BU-18
+8V SENSOR SUPPLY
538-BR
615-YL
E735-PU-18
HARNESS CODE
113-OR-18
MODULE LOAD
CLOCK
+V DISPLAY
538-BR
D963-BU-18
B
439-YL-18
TRANSMISSION
AUTOMATIC
MODE LAMP
7N-5876
B
614-PU
439-YL-18
GROUND
200-BK
200-BK
200-BK
200-BK
516-GN-14
515-GY-14
C413-YL-18
1
20
21
30
2
4
7
10
23
11
40
13
18
19
16
12
14
37
22
29
28
27
26
25
24
9
8
39
38
35
32
33
5
6
538-BR 537-GN
C414-BU-18
CONTROL GP - DIMMER
103-5526
102-BU-14
200-BK
200-BK-14
521-YL-14
124-GN-14
614-PU-14
537-GN-14
606-GY-14
605-YL-14
605-YL-14
606-GY-14
409-OR-18
102-BU
15
36
200-BK
E707-GN-18
200-BK-14
B
FRONT DASH ASSEMBLY
B
B
3
FLASHER
8D-6946
409-OR-18
432-PK-18
403-GN-18
201-BK-18
113-OR-18
442-GY-18
443-YL-18
200-BK
441-OR-18
447-PK-18
405-GY-18
B
416-OR-18
417-GY-18
34
201-BK-18
200-BK
605-YL
B
E708-PK-18
113-OR-18
113-OR-18
113-OR-18
B
PANEL LAMPS
7N-5876
LEFT TURN
IND LAMP
7N-5876
200-BK
COSA ROADING
FLASHER
6C-8846
B
B
537-GN-14
200-BK-14
113-OR-18
B
B
LAMP
9W-2111
910-YL-18
611-PU
615-YL
QQ
100-5778
605-YL
910-YL-18
FRONT DASH ASSEMBLY
FRONT DASH ASSEMBLY
B
TURN SIGNAL SW
9G-5589
QQ
QQ
201-BK-18
614-PU
201-BK-18
200-BK 200-BK
33
13
26
4
2
39
27
17
15
ALARM
3E-6328
275-BK-18
2
1
17
605-YL
31
945-BR-18
B
201-BK-18
200-BK
614-PU
124-GN-14
521-YL-14
515-GY-14
516-GN-14
517-BU-14
200-BK
614-PU-14
B
201-BK-18
L29
L29
L29
HAZARD
TURN
30B
+ BATTERY
HEAD LAMP
49
49A
31
C2
C
944-OR-18
201-BK-18
410-WH-18
B
201-BK-18
275-BK-18
GROUND
3
4
5
2
1
RIGHT TURN
IND LAMP
7N-5876
201-BK-18
FLOOD LAMP
IND LAMP
7N-5876
200-BK
200-BK
BK
RD
SERVICE
MODE
BLOWER SW
6P-3236
537-GN-14
HARNESS
CODE
PLUG
141-9692
NOTE J
113-OR-18
QQ
14
5
614-PU
113-OR-18
201-BK-18
201-BK-18
6
2
3
P
CATERPILLAR MONITORING SYSTEM
ACTION LAMP
ACTION ALARM
ACTION
ACTION
CONN 34
CONN 35
CONN 33
CONN 32
CONN 31
CONN 30
CONN 36
CONN 37
251-BK-18
251-BK-18
138-GN-18
251-BK-18
138-GN-18
H
G
F
944-OR-18
945-BR-18
ECAP SERVICE
CONNECTOR
CCC
J
D
E
A
B
L15
L11
L10
L15
L3
L9
L9
L10
L11
L12
L4
L4
L12
L11
L11
L10L10
L9
L9
6
3
4
BK-18
YL-18
WH-18
RD-18
BU-18
5
1
2
UNUSED
UNUSED
5
12
17
23
U
V
V
V
U
201-BK-18
201-BK-18
201-BK-18
201-BK-18
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
E955-OR-18
251-BK-18
UNUSED
201-BK-18
945-BR-18
944-OR-18
P P
6
CAT DATA LINK -
CAT DATA LINK +
138-GN-18
L
L
N
L
L
N
615-YL
615-YL
5
4
3
E
D
C
B
A
CUSTOMER
DATA
CONNECTION
251-BK-18
138-GN-18
818-BR-18
819-GY-18
138-GN-18
251-BK-18
UNUSED
UNUSED
GROUND
250-BK-18
E955-OR-18KEYPAD DATA
138-GN-18
2
1
PREVIOUS HARNESS CODE PLUGS
7
A
GROUND
8
L
AAAN
L
8
7
1
2
3
NOTE: HARNESS CODE PLUG 136-2144 FOR
MACHINES USING NEW FUEL SENDER 134-7262
AND GROUND DRIVEN SUPPLEMENTAL STEERING
NOTE: HARNESS CODE PLUG 106-5695
FOR OLDER MACHINES USING FUEL SENDER
106-3535 AND GROUND DRIVEN SUPPLEMENTAL
STEERING
4
B413-PU-18
B412-YL-18
8
188-WH-18
201-BK-18
KEYPAD +12V
LIFT PRESS SNSR
LIFT POS SNSR
201-BK-18
1
2
5
21
6
18
7
20
13
201-BK-18
15
19
CAB
FLOOD
LAMP
9X-4381
BEACON
128-6983
16
9
3
4
22
W
201-BK-14
14
200-BK
200-BK
603-PK
615-YL
201-BK-18
BK
RD
200-BK
2
1
200-BK
615-YL
200-BK
603-PK
615-YL
615-YL
615-YL
200-BK
CAB
FLOOD
LAMP
9X-4381
603-PK
200-BK
615-YL
200-BK
11
24
6
10
818-BR-18
RX IN
201-BK-18
TX OUT
UNUSED
GROUND
201-BK-14
201-BK-14
10
9
5
8
6
7
3
2
4
9
6
3
4
5
1
2
8
7
1
TRANSMISSION SHIFTER
136-7823
972-BU-18
B999-GN-18
965-WH-18
969-YL-18
968-BR-18
966-GY-18
970-GN-18
971-YL-18
NEUTRALIZER720-PU-18
202-BK-18
321-BR-18
306-GN-18
307-OR-18
409-OR-18
REV SW TO GND
FWD PAR SW TO B+
FWD SW TO GND
REV PAR SW TO B+
4TH GEAR SW TO GND
3RD GEAR SW TO GND
2ND GEAR SW TO GND
1ST GEAR SW TO GND
GROUND
BACKUP ALARM
START RELAY
START SW
NEUTRAL (EMS)
409-OR-18
306-GN-18
307-OR-18
321-BR-18
720-PU-18
202-BK-18
972-BU-18
971-YL-18
970-GN-18
966-GY-18
968-BR-18
969-YL-18
965-WH-18
B999-GN-18
126-PK-18
126-PK-18 B+
606-GY-14 606-GY-14
200-BK-14 200-BK-14
611-PU-14
619-GN-14
605-YL-14 605-YL-14
617-BR-14
611-PU-14
200-BK-14
619-GN-14
606-GY-14
614-PU-14
BUCKET
POSITION
LAMPS
NOTE B
JUMPER PLUG
REPLACES DIMMER SW
ON MACHINES
EQUIPPED W/ STD LIGHTING
A
C
B
PP
PP
RH LATERAL TURN LAMP
5C-8964
LH LATERAL TURN LAMP
5C-9029
+24V (IN)
PP
PP
605-YL-14
5
1
3
2
4
6
NOTE F
NOTE F
RH HI/LO/POSITION/TURN LAMP
3E-7586
LH HI/LO/POSITION/TURN LAMP
3E-7586
611-PU-14
1
2
3
4
2
3
4
6
1
2
1
5
BU-18
RD-18
250-BK-18
WH-18
YL-18
BK-18
4
3
200-BK-14
619-GN-14
606-GY-14
605-YL-14
6
619-GN-14
200-BK-14
617-BR-14
611-PU-14
606-GY-14
AAA
188-WH-18
201-BK-18
WLPCSII ECM
112-1572
819-GY-18
UNUSED
251-BK-18
138-GN-18
AAA
B
LIGHTING GP-ROADING 112-1589 (COSA)
C
L
L
200-BK
N
N
N
A
617-BR
5
OPERATOR STATION
CCC
614-PU-14
U
C
G
619-GN-14
610-OR-14
611-PU-14
G
CCC
V
DIMMER SW
2H-1855
NOTE: FOR COSA ROADING
ONLY
CONN 44
CONN 45
CONN 46
CONN 47
GN-18
GN-18
GN-18
GN-18
720-PU-18
604-OR-18
130-GN-18
L14L14
L14
L14
L4
L11
L10
L9
L5
L13
L3
L3
L3
L3 L3
L2
L2 L2
L1
L1
L1
L1
CCC
HH
322-GY
114-GN
987-WH
964-BU
762-YL
1
2
3
4
4
3
2
1
G
G
E932-PK-18
E933-YL-18
709-OR-18
A219-BK-18
V
V
V
V
U
U
A219-BK-18
WLPMS LIFT
CYLINDER
PRESSURE
SENSOR
124-4672
GA
G
12
11
10
9
6
2
8
1
7
5
976-OR-18
975-WH-18
1
2
LAMP
7N-5876
976-OR
975-WH
762-YL
761-GY
619-GN-14
606-GY-14
605-YL-14
200-BK-14
200-BK-14
200-BK-14
322-GY
B766-WH
B412-YL-18
138-GN-18
251-BK-18
B413-PU-18
4
3
3
144-GN
S
1
S
S
522-WH-14
611-PU-14
611-PU-14
P
517-BU-14
516-GN-14
515-GY-14
200-BK-14
U
U
606-GY-14
617-BR-14
614-PU-14
G
G
G
G
C
619-GN-14
B
A
3
200-BK-14
200-BK-14
200-BK-14
515-GY-14
1
138-GN-18
251-BK-18
B413-PU-18
S
S
S
S
CCC
7
6
2
FLOOD
LAMP
9X-1439
BK-18
6
RD-18
BK-18
RD-18
1
2
S
FLOOD
LAMP
9X-1439
RIGHT TURN
LAMP
3E-6466
5
4
2
LEFT TURN
LAMP
3E-6466
515-GY-14
B413-PU-18
251-BK-18
138-GN-18
C
B
A
4
114-GN
G
BLOWER
9G-8693
C
R. REAR BRK INDICATOR
L. REAR BRK INDICATOR
R. FRT BRK INDICATOR
L. FRT BRK INDICATOR
GND
+24V
BU-18
BU-18
OR-18
YL-18
PK-18
WH-18
OR-18
TCS DISPLAY
MODULE
115-9476
UNUSED 8
7
6
5
4
B412-YL-18
251-BK-18
138-GN-18
C WH-18
BK-18
OR-18
SIGNAL
+V
GROUND
B
A
WH-18
BK-18
RD-18
SIGNAL
+V
GROUND
3
2
1
PILOT SUPPLY INDICATOR
619-GN-14
611-PU-14
WLPMS LIFT
POSITION
SENSOR
110-8190
P
A219-BK
BBB
BBB
BBB
5
GG
GG
A219-BK
709-OR-18
E933-YL-18
E932-PK-18
LEFT FRONT WHEEL
SPEED SENSOR
3E-6955
RIGHT FRONT WHEEL
SPEED SENSOR
3E-6955
GROUND
SIGNAL
+V
C
B
A
A
B
C
+V
SIGNAL
GROUND
709-OR-18
A219-BK
4
A219-BK
709-OR-18
7
E932-PK-18
E933-YL-18
8
9
604-OR-18
130-GN-18
515-GY-14
114-GN
200-BK-14
606-GY-14
5
200-BK-14
200-BK-14
200-BK-14
10
2
1
6
605-YL-14
606-GY-14
200-BK-14
200-BK-14
619-GN-14
2
6
2
1
1
2
1
2
5
4
1
11
3
12
118-GY
502-OR
501-GN
500-BR
WH/RD-14
BK-14
THERMOSTAT SW
3E-5464
1
515-GY-14
GND
B+
P
T °
MOTOR
L
H
BR
GY
BK
OR
GN
5
3
987-WH
964-BU
144-GN
6
2
P
1
200-BK-14
B
A
G
611-PU-14
515-GY-14
517-BU-14
RESISTOR
9G-1950
2
WH/RD-14
BLOWER
9G-8697
BK-14
1
2
619-GN-14
4
200-BK-14
200-BK-14
614-PU-14
617-BR-14
605-YL-14
606-GY-14
611-PU-14
516-GN-14
A
619-GN-14
FRONT
WIPER
3E-6468
3
C
WLPCS
KEYPAD
129-0419
+V DISPLAY
GROUND
DATA
251-BK-18
614-PU
B
BACKLIGHT
2
322-GY
619-GN-14
1
5
4
1
3
Q
522-WH-14
517-BU-14
516-GN-14
617-BR-14
515-GY-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14
515-GY-14
200-BK-14
515-GY-14
Q
Q
720-PU-18
126-PK-18
STOP LAMP SW
105-6117
NEUTRALIZER SW
105-6118
720-PU
126-PK-18
522-WH-14
610-OR-14
611-PU-14
3
B412-YL-18
614-PU-14
CCC
605-YL-14
200-BK-14
200-BK-14
606-GY-14
619-GN-14
619-GN-14
B413-PU-18
251-BK-18
138-GN-18
B412-YL-18
976-OR
975-WH
G
G
LH BRAKE
VALVE AS.
4E-5544
G
975-WH
762-YL
Q
B766-WH
200-BK-14
2
4
A
761-GY
B766-WH
200-BK-14
976-OR
975-WH-18
976-OR-18
RIDE
CONTROL
SOLENOID
VALVES
6T-8046
GROUND
SOLENOID
+ BATTERY
GG
OR-18
BK-18
BU-18
200-BK-14
BUCKET POSITIONER SW
3E-7843
322-GY
114-GN
FORWARD
HORN
7T-0970
+ BATTERY
GROUND
SOLENOID
BK-18
OR-18
BU-18
LIFT POSITIONER SW
3E-7844
Q
B766-WH
761-GY
515-GY-14
200-BK-14
A
604-OR
130-GN
2
1
1
2
118-GY
502-OR
500-BR
WH/RD-14
BK-14
515-GY-14
MOTOR
MOTOR
200-BK-14
515-GY-14
517-BU-14
WH/RD-14
BK-14
516-GN-14
522-WH-14
CONN 39
CONN 40
CONN 41
CONN 42
CONN 43
CONN 48
CONN 49
CONN 50
CONN 51
CONN 52
CONN 52A
CONN 49C
TO LOC C-2
CONN 50C
CONN 54
CONN 53
TO LOC F-6
TO LOC F-6
L101
L101
L101
L101
L100
L100
L100
L100
L99L99
L99
L99
G
G
138-GN-18
251-BK-18
B413-PU-18
200-BK-14
200-BK-14
B766-WH
BBB
BBB
611-PU-14
614-PU-14
617-BR-14
BBB
200-BK-14
200-BK-14
HH
G
1
2
3
4
4
3
2
1
G
E932-PK-18
E933-YL-18
709-OR-18
A219-BK-18
GG
GG
A219-BK
709-OR-18
E933-YL-18
E932-PK-18
LEFT FRONT WHEEL
SPEED SENSOR
3E-6955
RIGHT FRONT WHEEL
SPEED SENSOR
3E-6955
GROUND
SIGNAL
+V
C
B
A
A
B
C
+V
SIGNAL
GROUND
709-OR-18
A219-BK
A219-BK
709-OR-18
E932-PK-18
E933-YL-18
GG
322-GY
114-GN
605-YL-14
606-GY-14
611-PU-14
611-PU-14
614-PU-14
617-BR-14
619-GN-14
619-GN-14
762-YL
761-GY
G
G
200-BK-14
200-BK-14
611-PU-14
619-GN-14
WLPMS LIFT
CYLINDER
PRESSURE
SENSOR
103-2040
GA
G
12
11
10
9
6
2
8
1
7
5
976-OR-18
975-WH-18
1
2
976-OR
975-WH
762-YL
761-GY
619-GN-14
606-GY-14
605-YL-14
200-BK-14
200-BK-14
322-GY
B766-WH
B412-YL-18
138-GN-18
251-BK-18
B413-PU-18
4
3
3
C
B
A
B413-PU-18
251-BK-18
138-GN-18
C
B
A
114-GN
C
B412-YL-18
251-BK-18
138-GN-18
C WH
BK
OR
SIGNAL
VS
GROUND
B
A
WH-18
BK-18
RD-18
SIGNAL
+B
GROUND
WLPMS LIFT
POSITION
SENSOR
110-8190
5
4
7
8
9
10
2
1
6
11
12
2
1
B
A
G
2
1
A
B412-YL-18
976-OR
975-WH
G
G
762-YL
B766-WH
975-WH-18
976-OR-18
RIDE
CONTROL
SOLENOID
VALVES
6T-8046
GROUND
SOLENOID
+ BATTERY
OR-18
BK-18
BU-18
BUCKET POSITIONER SW
3E-7843
322-GY
114-GN
FORWARD
HORN
4Y-7882 STD
7T-0970 ATT
+ BATTERY
GROUND
SOLENOID
BK-18
OR-18
BU-18
LIFT POSITIONER SW
3E-7844
B766-WH
761-GY
3
2
1
W
T
GN-18
3
2
1
GN-18
200-BK-14
611-PU-14
619-GN-14
U ZZ
HEAD LAMP
4Y-4580
ZZ
614-PU
606-GY
PU-18
YL-18
T
W
LH
TURN & WIDTH
LAMP
4Y-3580
LIGHTING GP-JAPANESE ROADING 4Y-9525
U
U
G U
5
1
6
4
3
2
614-PU
606-GY
619-GN-14
200-BK-14
611-PU-14
RH
TURN & WIDTH
LAMP
4Y-3263
GY-18
PU-18
606-GY
614-PU
ZZ
HEAD LAMP
4Y-4580
ZZ
U
611-PU-14
200-BK-14
619-GN-14
606-GY
614-PU
2
3
4
6
619-GN-14
611-PU-14
200-BK-14
1
5
G
GN-18
GN-18
U
U
V
CONN 40A
CONN 42A
CONN 41A
CONN 39A
CONN 50A
CONN 48A
CONN 49A
CONN 61
CONN 40B
CONN 42B
CONN 41B
CONN 39B
CONN 50B
CONN 48B
CONN 62
CONN 49B
TO LOC A-3
TO LOC B-3
TO LOC A-3
TO LOC A-3
TO LOC B-3
TO LOC A-3
E08069
L72
L70
L79
L82
L76 L76
L49L49
L60
L50L50
L59
L59
L59
L59
L58
L69
L72
L72
L71
L71
L71
L73
L73
L73
L73
L70
L70
L70
L69
L75
L76 L76
L75
L68
L62
133-OR
A538-OR-14
REAR WINDOW
DEFROSTER
INDICATOR LAMP
7N-5876
COSA ONLY
150-OR-14
N
N
REAR DEFROSTER
6C-7275 (COSA ONLY)
200-BK-14
963-GN
964-BU
762-YL
1
FOR 938F ONLY
2
BUCKET/FORK POSITIONER
SELECTOR SW
6T-3991
IT38F ONLY
KICKOUT NEUTRALIZER SW
6T-3990
IT38F ONLY
3
12
3
201-BK-18
201-BK-18
4
201-BK-18
201-BK-18
5
DDD
6
C
C
C
C
C
C
C
C
C
C
614-PU
C
CC
C
C
C
C
C
C
C
614-PU
200-BK
PANEL
LAMP
7N-5876
C
C
200-BK
200-BK
200-BK
614-PU
108-BU-14
128-PK
B766-WH
987-WH
963-GN
964-BU
8
7
6
5
200-BK
7
200-BK
OPTIONS
CODE
CONN
334-BU-18
D743-GN-18
D744-WH-18
976-OR-18
NP
C
C
C
C
C
38
4
3
2
1
107-5630
3
6
8
4
5
2
7
200-BK
603-PK
102-BU-14
120-YL
615-YL
603-PK
105-BR
503-BR
505-BU
118-GY
504-YL
12
11
10
9
202-BK-18
200-BK
603-PK
439-YL-18
973-BR-18
977-YL-18
617-BR
615-YL
608-GN
610-OR-14
614-PU-14
A538-OR-14
144-GN
2
1
12
3
2
10
11
C
8
7
4
9
5
6
PANEL
LAMP
7N-5876
603-PK
L63
8
12
10
9
7
6
4
3
1
11
8
617-BR
5
2
617-BR
1
DDD
200-BK
DDD
DDD
614-PU-14
614-PU
614-PU-14
DDD
DDD
200-BK
608-GN
DDD
615-YL
105-BR
DDD
102-BU-14
PANEL
LAMP
7N-5876
614-PU
200-BK
11
5 6
3
P
DDD
P
200-BK
P
128-PK
164-WH-18
105-BR
102-BU-14
N
N
200-BK
200-BK
B766-WH
133-OR
987-WH
202-BK-18
202-BK-18
202-BK-18
202-BK-18
4TH FUNCTION DIVERTER SW
6T-3990
IT38F ONLY
202-BK-18 202-BK-18
202-BK-18
617-BR
P
1
200-BK-14
200-BK-14
200-BK-14
200-BK-14
P
200-BK-14
N
4
CLOSED
OPEN
A222-BK-18
614-PU-14
202-BK-18
A221-BK-18
614-PU
102-BU-14
107-5631
610-OR-14
1
439-YL-18
973-BR-18
977-YL-18
450-YL-18
751-GN-18
A221-BK-18
A222-BK-18
373-GN-18
CLOSED
L63
6
4
3
1
5
2
3
UNUSED
OPEN
2
754-BU-18
752-YL-18
755-OR-18
900-PU-18
901-WH-18
975-WH-18
978-GN-18
945-BR-18
974-PU-18
710-GN-18
SOL 2 REV
34
32
33
944-OR-18
36
31
5
6
23
22
39
35
DOWNSHIFT (NC)
AIR INLET HTR
DOWNSHIFT (NO)
SOL RETURN
SOL 6 SPD 3
SOL 5 SPD 2
SOL 4 SPD 1
SOL 3 FWD LOW
26
2
SOL 1 FWD HI
ENG SPD INPUT
XMSN SPD INPUT
UNUSED
1
9
7
968-BR-18
B999-GN-18
972-BU-18
966-GY-18
970-GN-18
971-YL-18
965-WH-18
969-YL-18
973-BR-18
10
3
977-YL-18
164-WH
SPD 4 SW TO GND
SPD 3 SW TO GND
40
17
8
12
11
4
27
25
29
28
PARKING BRAKE
UNUSED
18
14
30
20
21
CAT DATA LINK -
CAT DATA LINK +
37
16
15
19
13
SPD 1 SW TO GND
UNUSED
AIH SW TO GND
OPTIONS CODE 1
OPTIONS CODE 0
UNUSED
UNUSED
REV PARITY SW B+
614-PU-14
1
102-BU-14
FWD SW TO GND
FWD PARITY SW B+
REV SW TO GND
+ BATTERY
SPD 2 SW TO GND
AUTO/MAN SW (NO)
AUTO/MAN SW (NC)
24
RIDE CTRL SW GND
RIDE CTRL SW GND
202-BK-18
UNUSED
N
RIDE CTRL SOL
GROUND
202-BK-18
PARKING
BRAKE SW
3T-3132
202-BK-18
CST AUTOSHIFT
CONTROL
111-5025
C
C
614-PU
MANUAL
AUTO
TERM
2 TO 3
TERM
1 TO 2
TRANSMISSION AUTO/MAN SW OPERATION
127-OR
419-YL-18
PLUG P/N
200-BK
504-YL
118-GY
505-BU
503-BR
A538-OR-14
SEAT AIR COMPRESSOR/HTR108-BU-14
762-YL
C
2
PLATFORM
GND
105-BR
202-BK-18
164-WH-18
OPTIONS
C
2
ON
OFF
116-BR
102-BU-14
IND
LAMP
TRANSMISSION
AUTO/MANUAL SW
9X-9099
AUTO RIDE CTRL/AIR HEATER
A221-BK-18
PP
202-BK-18
AIR HEATER
200-BK
603-PK
A222-BK-18
2
N
614-PU
MAIN PANEL
102-BU-14
3
AUTO RIDE CTRL
NOTE: REAR MOUNT FOR BEACON
202-BK-18
107-5628
373-GN-18
REAR WINDOW DEFROSTER SW (COSA ONLY)
6T-3990
12
9
8
A538-OR-14
MODE
102-BU-14
GN
GY
BR
OR
4
2
3
1
H
L
MOTOR
°T
BK
P
B+
GND
200-BK-14
BEACON SW
6T-3990
614-PU
3
RUNNING
LAMP SW
6T-3989
2
REAR
WIPER
MOTOR
3E-7512
OPTIONS CODE PLUG
SEE CHART ABOVE
FLOOD
LAMP SW
9X-1423
CONN 15
CONN 24
CONN 23A
CONN 23
TO LOC F-10
CIRCUIT GROUPING
DESIGNATION
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
CONNECTOR
SYMBOL DESCRIPTION
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
TO MACHINE STRUCTURE
G
I
H
15 14 13
C
B
A
15 14 13
F
E
D
12 11 10 9 8 7
6
5 4
3 2
1
H
G
I
F
E
D
3 2
1
C
B
A
12 11 10 9 8 7
6
5 4
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
TRACTION CONTROL SYSTEM.
CATERPILLAR MONITORING SYSTEM CIRCUIT.
PANEL LAMP CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
WHEEL LOADER PAYLOAD CONTROL
SYSTEM (WLPCSII).
TURN SIGNAL CIRCUIT.
TRANSMISSION CONTROL CIRCUIT.
START AID CIRCUIT.
ALL DASHED LINES ARE ATTACHMENTS.