789B ELECTRICAL SYSTEM SCHEMATIC

©
1992 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR5673
December 1992
789B Truck
Electrical System
7EK1-UP
Machine
Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
1 Alarm - Backup A-15 28 Solenoid - Proportional B-14
F Alarm Engine Overspeed E-8 36 Solenoid - Shutter B-9
G Alarm - Fault (EMS) C-2 35 Solenoid - Steering Bleed A-10
2 Alternator B-7 31 Solenoid - Up Shift A-14
3 Batteries A-2 B Speedometer C-4
D Breakers - Circuit E-14, F15 29 Switch - A/C Press B-9
C Control - Autolube E-8 37 Switch - Aftercooler Temp (EMS) B-5
E Control - Automatic Retarder F-2 C Switch - Backup Alarm D-8
2 Control - Engine A-5 C Switch - Backup Lamp D-8
C Control - Neutral/Start F-6 D Switch - Body Raise (Trans) D-12
E Control - Payload Monitor D-13 A Switch - Blower C-5
23 Control - Start Aid A-8 16 Switch - Body Down (Trans) A-12
C Control - Steering Action C-13 Switch - Brake Master Cyl Overstroke
E Control - Traction Aid D-13 (EMS)
E Control - Transmission F-7 Switch - Brake Master Cyl Overstroke
C Control Steering Bleed E-9 (EMS)
E Converter - 24/ 12 Volt C-15 Switch - Brake Master Cyl Overstroke
G Distributor - Transmission E-9 (EMS)
4 Dryer - Air B-14 18 Switch - Brake Oil Temp (EMS) B-12
C Flasher F-5 G Switch - Brake Retract D-8
D Fuses D-15 E Switch - Brake System Air Press (EMS) C-14
B Gauge - Brake Oil Temp D-5 40 Switch - Converter/Retarder Temp (EMS) B-7
B Gauge - Engine Coolant Temp D-5 B Switch - Diagnostic Enable (Eng) D-8
E Ground - Cab E-13 43 Switch - Disconnect A-2
6 Ground - Cab/Frame B-12 G Switch - Dome Lamp D-2
C Ground - Engine A-4 A Switch - Dome Lamp E-5
2 Ground - Engine (Alternator) B-7 42 Switch - Engine Coolant Flow (EMS) B-4
6 Ground - Frame B-9 19 Switch - Engine Coolant Temp (Shutter) B-8
8 Ground - Frame/Engine A-12 43 Switch - Engine Flood Lamp E-1
B Indicator - Transmission Gear E-6 43 Switch - Engine Shutdown A-5
B Lamp - Engine Air Filter E-8 G Switch - Fog Lamp D-2
B Lamp - Engine Control Fault D-8 45 Switch - Fuel Filter Press (EMS) B-5
B Lamp - Engine Overspeed Warning E-8 A Switch - Headlight Dimmer F-3
B Lamp - Action (EMS) D-4 C Switch - Key D-8
B Lamp - Retarder D-3 43 Switch - Ladder Lamp D-1
C Meter - Service D-9 G Switch - Ladder Lamp D-2
15 Module - Stop/Tail Lamp B-14 46 Switch - Left Hoist Screen Press (EMS) A-10
B Monitor - Operator (EMS) E-6 B Switch - On/Off (Auto Retarder) E-3
16 Motor - Brake Retract B-14 B Switch - Operator Monitor Test (EMS) C-4
A Motors - Blower C-4 G Switch - Panel Dimmer D-2
B Panel - Payload Monitor Operator C-5 E Switch - Parking Brake Press (EMS) C-15
17
Pickup - Engine Speed
(Tach/ Automatic Retarder Control)
B-7 49 Switch - Refrigerant Press (A/C) B-8
E Relay - Backup E-15 F Switch - Retarder Press (Auto Retarder) D-3
E Relay - Main E-15 F Switch - Retarder Press (Retarder Lamp) D-3
23 Relay - Start Aid A-7 46 Switch - Right Hoist Screen Press (EMS) A-10
A Resistor - Blower Speed C-5 G Switch - Running Lamp E-2
G Resistor - Dimmer D-2 E Switch - Secondary Brake Press (Trans) C-15
23 Resistor - Ether Aid A-8 E Switch - Service Clear (Auto Retarder) E-3
23 Resistor - Ether Aid A-8 D Switch - Service Clear (Trans) E-6
18 Sender - Brake Oil (Gauge) B-11 E Switch - Service Set (Auto Retarder) E-3
19 Sender - Engine Coolant Temp (Gauge) B-5 D Switch - Service Set (Trans) E-6
20 Sender - Transmission Speed A-13 E Switch - Service/Retarder Press (Tractn) C-14
21 Sender - Wheel Speed (Tractn) A-15 E Switch -Service/Retarder Press (Trans) C-14
22 Sender - Wheel Speed (Tractn) B-15 C Switch - Shift Lever E-8
E Sensor - Atmospheric Press (Eng) D-6 C Switch - Start Aid D-15
19 Sensor - Engine Coolant Temp (Eng) B-4 19 Switch - Start Aid Temp B-7
44 Sensor - Engine Oil Pressure (Eng) B-4 33 Switch - Steering High Press A-11
17 Sensor - Engine Speed (Eng) B-4 50 Switch - Steering Low Press A-11
24 Sensor - Left Front Strut Press (Payld) A-6 E Switch - Stop Lamp Press (Module) C-13
25 Sensor - Left Rear Strut Press (Payld) A-12 A Switch - Thermostat (A/C) C-5
19 Sensor - Turbo Inlet Press (Eng) B-4 B Switch - Throttle Bypass (Eng) D-8
26 Sensor - Right Front Strut Press (Payld) A-6 Switch - Torque Converter Inlet Filter
27 Sensor - Right Rear Strut Press (Payld) A-12 (EMS)
A Sensor - Throttle Position (Eng) D-6 Switch - Torque Converter Outlet Screen
19 Sensor - Turbo Outlet Press (Eng) B-4 (EMS)
28 Solenoid - 4 Way B-14 C Switch - Traction Aid Test D-8
29 Solenoid - Air Conditioner Compressor A-8 52 Switch - Transmission A-14
30 Solenoid - Air Start B-13 53 Switch - Transmission Filter (EMS) A-11
F Solenoid - Automatic Retarder D-3 53 Switch - Transmission Supply (EMS) A-11
F Solenoid - Automatic Retarder Supply D-3 A Switch - Turn Signal F-4
32 Solenoids - Cylinder Head (1 per cylinder) A, B-3 D Tachograph F-12
31 Solenoid - Down Shift A-14 B Tachometer D-5
23 Solenoid - Ether 1 A-7
23 Solenoid - Ether 2 A-7
31 Solenoid - Lockup A-13
E Solenoid - Lube D-15
Machine locations are repeated for components located close together.
B = Components in dash.
C = Components in console.
D = Components behind seat.
E = Components in rear compartment.
F = Components in front compartment.
G = Components in overhead console.
53
51
A-10
A-10
Component Location Chart
A-12
A-12
A-11
38
39
39
Resistor and Solenoid Specifications
Component Part No. Resistance (Ohms)¹
Resistor - Blower Motor Speed 9G1950 Overall 2.0 ± .1; Tap 1.0± .05
Resistor - Panel Dimmer 3T3437 10.0 ± 0.1
Solenoid - 4 Way 9G9988 24.9
Solenoid - Air Start 5T4434 42.0 ± 4.0
Solenoid - Auto Retarder 3E8691 29.8 ± 1.5
Solenoid - Down Shift, Up Shift, Lockup 7X1120 33.7
Solenoid - Ether 9X7137 3.3 ± 1
Solenoid - Proportional 3T0062 16.0
Solenoid - Shutter 7N9719 68.0
Solenoid - Steering Bleed 6T8046 20.1 ± 1.0
¹ At room temperature.
Related Electrical Service Manuals
Title Form No.
Actual Gear Indicator SENR4252
Alternator; 30-SI Series SENR7508
Automatic Electronic Traction Aid SENR2986
Automatic Retarder Control System SENR5683
Electronic Monitoring System SENR2945
Electronic Neutral Start Control SENR3889
Electronic Troubleshooting
3512 And 3516 EUI Engine
SENR5597
EPTC II For ICM Transmissions SENR5618
Starting And Charging Systems SENR2947
Truck Payload Measurement System SENR4733
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
36
38
F
39
40
42
43
44
45
46
17
18
19
20
21
22
23
24
49
50
51
52
53
G
Machine Harness Connector and Component Locations
A
7
8
11
13
15
16
1
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
3
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
33
37
35
32
36
38
F
39
40
42
43
44
45
46
17
21
22
23
24
49
50
51
52
53
G
Connectors
Machine
Location
Harness And/Or Components
Schematic
Location
Connectors
Machine
Location
Harness And/Or Components
Schematic
Location
70 Contacts *
XX - 7E-9211
Engine Control
A-5
E
A - 102-8602
F - 102-8963
F-9
40 Contacts J
A - 102-8602
XX - 7E-9211
B-8 B
A - 102-8602
T - 6G-9462
E-4
*
F - 102-8963
Transmission Control
F-7
E - 5T-9412
U - 5T-9411
A-14
*
M - 2A-7119
Auto Retarder Control
E-2
SS - 8W-3844
QQ - 2A-7132
B-6
25 Contacts J
A - 102-8602
B - 2A-6907
B-10
E
A - 102-8602
D - 5T-8598
C-12
J
A - 102-8602
C - 7I-4617
B-11 B
A - 102-8602
K - 8X-9992
E-4
D
A - 102-8602
Diagnostic Connector
F-13 C
B - 2A-6907
L - 7I-4618
C-3
*
A - 102-8602
Operator Monitor (EMS)
E-6 F
B - 2A-6907
QQ - 2A-7132
B-7
*
D - 5T-8598
Traction Aid Control
D-13 E
M - 2A-7119
BB - 7I-4733
E-2
J
F - 102-8963
G - 102-9096
B-13
Q - 7I-4619 A-11
Customer Data Connector
D-1
*
QQ - 2A-7132
Payload Monitor Cont
D-13 H
R - 6T-4301
S - 6T-4300
C-5
14 Contacts J
D - 5T-8598
E - 5T-9412
B-12 D
QQ - 2A-7132
Customer Data Connector
D-14
A - 102-8602
H - 2A-6492
D-13 B
A - 102-8602
K - 8X-9992
E-4
A - 102-8602
H - 2A-6492
E-13 H
A - 102-8602
R - 6T-4301
D-3
*
F - 102-8963
Shift Lever Switch
E-8
E
A - 102-8602
QQ - 2A-7132
D-9
G - 102-9096
V - 7T-3418
A-13
B - 2A-6907
L - 7I-4618
F-1
L - 7I-4618
Q - 7I-4619
F-1 *
E - 5T-9412
4 Way Solenoid
B-14
*
M - 2A-7119
Auto Retarder Control
E-3
E
F - 102-8963
Body Raise Switch
D-12
*
V - 7T-3418
Transmission Switch
A-13 *
F - 102-8963
Transmission Gear Indicator
E-6
*
F - 102-8963
Transmission Control
F-7
Q - 7I-4619
X - 7I-5124
B-2
E
A - 102-8602
J - 8W-0639
C-9
Q - 7I-4619
X - 7I-5124
F-1
E
A - 102-8602
J - 8W-0639
C-9
Q - 7I-4619
Y - 7I-5382
B-1
*
A - 102-8602
Neutral/Start Control
F-6
Q - 7I-4619
Y - 7I-5382
E-1
B
A - 102-8602
Service Tool Connector
F-6
AAA - 8X-2419
DDD - 8X-0596
B-8
A - 102-8602
L - 7I-4618
F-2 *
HH - 102-8856
Stop/Tail Lamp Module
B-14
F
A - 102-8602
M - 2A-7119
E-3
QQ - 2A-7132
RR - 8W-3843
B-6
C - 7I-4617
HH - 102-8856
B-15
AAA - 8X-2419
BBB - 8W-9735
B-9
L - 7I-4618
Q - 7I-4619
C-2
*
QQ - 2A-7132
Payload Monitor Op Panel
C-6
E
A - 102-8602
DD - 5T-9326
C-15
A - 102-8602
L - 7I-4618
F-2
F
A - 102-8602
M - 2A-7119
D-3
*
A - 102-8602
Steering Action Control
C-13
*
A - 102-8602
Steering Bleed Control
E-9
*
A - 102-8602
Transmission Speed Distributor
E-9
*
F - 102-8963
Transmission Gear Indicator
E-6
MACHINE locations are repeated for connectors located close together.
* = Connector is located at the component.
B = Connectors behind dash.
C = Connectors in console.
D = Connectors behind seat.
E = Connectors in rear compartment.
F = Connectors in front compartment.
H = Connectors behind air conditioning controls.
J = Connectors on rear compartment sidewall.
9 Contacts
8 Contacts
7 Contacts
6 Contacts
5 Contacts
4 Contacts
Harness Connector Location Chart
37 Contacts
20 Contacts
10 Contacts
Component Identifier (CID) List
CID No. Component
001 Cylinder 1 Injector Solenoid
002 Cylinder 2 Injector Solenoid
003 Cylinder 3 Injector Solenoid
004 Cylinder 4 Injector Solenoid
005 Cylinder 5 Injector Solenoid
006 Cylinder 6 Injector Solenoid
007 Cylinder 7 Injector Solenoid
008 Cylinder 8 Injector Solenoid
009 Cylinder 9 Injector Solenoid
010 Cylinder 10 Injector Solenoid
011 Cylinder 11 Injector Solenoid
012 Cylinder 12 Injector Solenoid
013 Cylinder 13 Injector Solenoid
014 Cylinder 14 Injector Solenoid
015 Cylinder 15 Injector Solenoid
016 Cylinder 16 Injector Solenoid
091 Throttle Position Sensor
100 Engine Oil Pressure Sensor
110 Coolant Temperature Sensor
168 Electrical System Voltage
190 Engine RPM Sensor
248 CAT Data Link
253 Personality Module Mismatch
261 Timing Calibration
262 Analog Sensor Power Supply
263 Digital Sensor Power Supply
267 Shutdown Inputs Are Incorrect
268 Programmed Parameter Fault
270 Harness Code
272 Turbo Outlet Pressure Calibration
273 Turbo Outlet Pressure Calibration
274 Atmospheric Pressure Calibration
275 Turbo Inlet Calibration
276 Turbo Inlet Calibration
281 Engine Lamp
282 Overspeed Lamp
283 Filter Restrict Lamp
284 EMS System Enable
285 EMS Coolant Lamp
286 EMS Oil Lamp
621 Downshift Switch
622 Upshift Switch
623 Direction Switch
626 Lock Switch
627 Parking Brake Switch
628 Quickshift Switch
631 Clutch 1 Solenoid (Reverse)
632 Clutch 2 Solenoid (Forward)
633 Clutch 3 Solenoid (Speed)
634 Clutch 4 Solenoid (Speed)
635 Clutch 5 Solenoid (Speed)
637 Start Relay
650 Harness Code
653 Control Module
700 Actual Gear Switch
702 Shift Lever Switch
710 ARC Supply Solenoid
711 ARC Control Solenoid
712 Retarder Lamp
713 ARC On/Off Switch
714 Auto Retarder Pressure Switch
715 Retarder Pressure Switch
CID list applies to Engine, Transmission and Auto Retarder Controls.
Flash
Code
Component
Identifiers ¹
Failure Mode
Identifiers ²
12 267 02
16 281, 282, 283 05, 06
17 168 00, 01
18 284, 285, 286 05, 06
21 262, 263 03, 04
24 100 03, 04
25 272, 273 03, 04
26 274 03, 04
27 110 03, 04
29 275 03, 04
32 091 08
34 190 02
39 276 03, 04
42 100, 261, 272, 273, 274, 275, 276 13
52 253 02
54 248 09
55 - -
56 268 02
71 001 05, 06
72 002 05, 06
73 003 05, 06
74 004 05, 06
75 005 05, 06
76 006 05, 06
77 007 05, 06
78 008 05, 06
81 009 05, 06
82 010 05, 06
83 011 05, 06
84 012 05, 06
85 013 05, 06
86 014 05, 06
87 015 05, 06
88 016 05, 06
¹ See Component Identifier List.
² See Failure Mode Identifier List.
Flash Code Conversion
Failure Mode Identifier (FMI) List
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.
Wire Description Chart
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits
Lighting Circuits (Cont'd.)
101
RD
BAT
635
BU
PAYLOAD MON RED LAMP
102
BU
HD LMP
636
GN
PAYLOAD MON GREEN LAMP
103
YL
AUX CKT
639
WH
LEFT HAND STOP/TAIL LAMP
105
BR
KEY SW
640
GN
RIGHT HAND STOP/TAIL LAMP
107
WH
ENG SHUT - DOWN FIRE SUPPR
109
OR
ALT OUTPUT (+) TERM.
112
PU
MAIN POWER RELAY OUTPUT
700
PK
AETA TEST SW
113
OR
OPR MON PANEL B+ SWITCHED
703
BU
XMSN UP SOL
115
PK
AUX CKT
704
GY
XMSN DOWN SOL
120
YL
AUX CKT
705
PK
XMSN LOCKUP CLUTCH SOL BASIC
121
YL
BACKUP ALARM TO LAMP
706
BR
XMSN RETARDER SW
122
BU
AUX CKT
707
PU
XMSN BED RAISE SW
123
WH
AUX CKT
709
OR
SENSOR POWER SUPPLY
124
GN
A/C
710
GN
XMSN SPEED PICKUP SIGNAL
126
PK
XMSN CONT
711
BR
XMSN LEVER CODE 1
129
BU
AUX CKT
712
WH
XMSN LEVER CODE 2
132
PK
AETA CONT
713
OR
XMSN LEVER CODE 3
135
BU
AUX CKT
714
YL
XMSN LEVER CODE 4
138
GN
AUTO LUBE PUMP TO PAYLOAD MON
715
GN
XMSN LEVER CODE 5
139
OR
AUX CKT
716
BU
XMSN LEVER CODE 6
149
PU
AUX CKT
720
PU
XMSN BRAKE SW
150
OR
EUI (ADEM)
721
BR
XMSN GEAR CODE 1
176
OR
AUX CKT
722
WH
XMSN GEAR CODE 2
176
YL
AUX CKT
723
OR
XMSN GEAR CODE 3
724
YL
XMSN GEAR CODE 4
725
GN
XMSN GEAR CODE 5
200
BK
MAIN CHASSIS
726
BU
XMSN GEAR CODE 6
201
BK
OPR MON PANEL CMS
733
BR
SWITCHING GEAR CODE 1 FRONT
202
BK
XMSN CONT
734
WH
SWITCHING GEAR CODE 2 FRONT
203
BK
CHASSIS DIAGNOSTIC
735
OR
SWITCHING GEAR CODE 3 FRONT
207
BK
STARTER DIAGNOSTIC
736
YL
SWITCHING GEAR CODE 4 FRONT
210
BK
CONVERTER OUTPUT (24/12 VOLT)
737
GN
SWITCHING GEAR CODE 5 FRONT
212
BK
AETA CODING PIN 16
767
WH
AETA PICKUP POWER
213
BK
AETA CODING PIN 17
768
OR
AETA PICKUP XMSN
214
BK
AETA CODING PIN 18
769
BU
WHEEL SPEED PICKUP LEFT
215
BK
AETA CODING PIN 19
770
GN
WHEEL SPEED PICKUP RIGHT
216
BK
AETA CODING PIN 20
772
BR
AETA RETARDER SW
217
BK
XMSN ID CODE 2
773
GY
AETA SERVOVALVE
218
BK
XMSN ID CODE 1
774
YL
AETA SOL - LEFT
219
BK
XMSN ID CODE 0
775
BR
AETA SOL - RIGHT
227
BK
XMSN ID CODE 3
777
PU
BRAKE RELEASE MOTOR
229
BK
EUI CONT
794
YL
PAYLOAD MON XMSN SPEED
231
BK
XMSN SW
799
WH
SENSOR POWER
250
BK
PAYLOAD MON - CUSTOMER GROUND
801
PK
AUTO LUBE SOL OR MOTOR
251
BK
PAYLOAD MON - SYSTEM GROUND
818
BR
SERIAL DATA (TRANSMIT)
280
BK
XMSN CONT IDENT CODE 4
819
GY
SERIAL DATA (RECEIVE)
A215
BK
AUTO RETARDER CONTROL HARNESS CODE 0
820
BU
TRANSMIT KEY
A216
BK
AUTO RETARDER CONTROL HARNESS CODE 1
858
GY
PAYLOAD MON RIGHT FRONT SENSOR
A217
BK
AUTO RETARDER CONTROL HARNESS CODE 2
859
YL
PAYLOAD MON LEFT FRONT SENSOR
A218
BK
AUTO RETARDER CONTROL HARNESS CODE 3
860
PK
PAYLOAD MON RIGHT REAR SENSOR
861
PU
PAYLOAD MON LEFT REAR SENSOR
863
BU
PAYLOAD MON TRANSMIT LCD OUT
306
GN
STARTER RELAY COIL TO NEUT START SW OR
864
BR
PAYLOAD MON CLOCK LCD OUT
KEY SW
865
GY
PAYLOAD MON LATCH LCD OUT
307
OR
KEY SW TO NEUT START SW
866
PK
PAYLOAD MON TEST/SET
308
YL
MAIN POWER RELAY COIL
867
PU
PAYLOAD MON MODE
310
PU
START AID SW TO START AID SOL
891
BU
NEUT START CONT TO PAYLOAD MON SYSTEM
311
WH
START AID SOL TO TEMP SW
892
BR
EUI HS DATA LINK (-)
315
GN
START AID BKR TO START AID RELAY
893
GN
EUI HS DATA LINK (+)
317
YL
START AID RELAY TO START AID SOL
913
BU
SHUTTER CONT TEMP SW TO PRESS. SW
321
BR
BCKP ALARM LAMP TRAVEL ALARM
914
YL
PRESS. SW TO SHUTTER CONT SOL
326
PU
KEY SW "C" TERM.
993
BR
EUI SENSOR ANALOG GROUND
327
PK
SHUTDOWN SOL
994
GY
EUI ENG OIL PRESS.
360
GN
ENGINE SHUTDOWN SIGNAL C
995
BU
EUI COOLANT TEMP (ANALOG)
361
OR
ENGINE SHUTDOWN SIGNAL D
996
GN
ENG SPEED SENSOR V+
997
OR
EUI SENSOR ANALOG POWER
998
BR
EUI SENSOR DIGITAL GROUND
403
GN
ALTERNATOR (R) TERM.
999
WH
EUI ENGINE SPEED SIGNAL
405
GY
OPR MON OIL PRESS. (LO SETTING)
A700
OR
EUI SENSOR DIGITAL POWER
406
PU
OPR MON COOLANT TEMP
A701
GY
EUI CYLINDER SOL 1
407
PK
OPR MON CONVERTER/RETARDER OIL TEMP
A702
PU
EUI CYLINDER SOL 2
408
WH
OPR MON SYSTEM AIR PRESS.
A703
BR
EUI CYLINDER SOL 3
409
OR
OPR MON NEUT
A704
GN
EUI CYLINDER SOL 4
410
WH
OPR MON FAULT ALARM
A705
BU
EUI CYLINDER SOL 5
411
PK
OPR MON MASTER FAULT LAMP
A706
GY
EUI CYLINDER SOL 6
412
BU
OPR MON COOLANT FLOW
A707
PU
EUI CYLINDER SOL 7
413
BR
OPR MON FUEL PRESS.
A708
BR
EUI CYLINDER SOL 8
415
GN
OPR MON TEST SW
A709
OR
EUI CYLINDER SOL 9
417
GY
PRIMARY STER SW
A710
GY
EUI CYLINDER SOL 10
419
YL
OPR MON PARKING BRAKE
A711
PU
EUI CYLINDER SOL 11
426
BR
OPR MON POWER TRAIN OIL FILTER
A712
BR
EUI CYLINDER SOL 12
430
BU
OPR MON AIR FILTER
A713
GN
EUI CYLINDER SOL 13
437
BR
OPR MON FUEL LEVEL TO FUEL FILTER JUMPER
A714
BU
EUI CYLINDER SOL 14
438
YL
OPR MON COOLANT TEMP JUMPER
A715
GY
EUI CYLINDER SOL 15
441
OR
ENG COOLANT TEMP GAGE
A716
PU
EUI CYLINDER SOL 16
446
PU
BRAKE OIL TEMP GAGE
A721
WH
EUI CYLINDER SOL 1 RETURN
449
BU
SPDOM SENDER (SIGNAL NO. 1)
A722
YL
EUI CYLINDER SOL 2 RETURN
450
YL
TACH SENDER (+)
A723
OR
EUI CYLINDER SOL 3 RETURN
451
BR
TACH SENDER (-)
A724
WH
EUI CYLINDER SOL 4 RETURN
454
GN
RETARDER INDICATOR LAMP
A725
YL
EUI CYLINDER SOL 5 RETURN
470
PU
CANE SW NEUT
A726
OR
EUI CYLINDER SOL 6 RETURN
472
OR
PARKING BRAKE SW TO OVERSTROKE SW
A727
PK
EUI CYLINDER SOL 7 RETURN
473
GY
OVERSTROKE SW TO OVERSTROKE SW
A728
WH
EUI CYLINDER SOL 8 RETURN
474
WH
OVERSTROKE SW TO OVERSTROKE SW
A729
YL
EUI CYLINDER SOL 9 RETURN
481
GN
CONVERTER TEMP SW TO BRAKE OIL TEMP SW
A730
OR
EUI CYLINDER SOL 10 RETURN
A430
OR
EUI CONT FAULT OUTPUT
A731
WH
EUI CYLINDER SOL 11 RETURN
A446
PU
ELECTRONIC PUMP CONT LINKAGE CONT FAULT
A732
YL
EUI CYLINDER SOL 12 RETURN
#2
A733
OR
EUI CYLINDER SOL 13 RETURN
A489
BU
OPR MON STEERING SPEED CONTROL SW
A734
PK
EUI CYLINDER SOL 14 RETURN
A490
GN
OVER STROKE SW TO OVERSTROKE SW
A735
WH
EUI CYLINDER SOL 15 RETURN
A491
WH
TRANS SUPPLY SW TO TORQUE CONV INLET
A736
YL
EUI CYLINDER SOL 16 RETURN
FILTER SW
A746
PK
EUI BOOST PRESSURE
A492
OR
HOIST FILTER SW TO HOIST FILTER SW
A747
GY
EUI ATMOSPHERIC PRESSURE SIGNAL
A493
YL
HOIST FILTER SW TO T.C. SW
A748
GY
EUI TIMING WHEEL CAL
A980
GY
SERVICE METER B+ TO ENG OIL PRESS. SW
A983
BU
ENG THROTTLE CONT - SIGNAL
513
OR
A/C COMPRESSOR/REFRIGERANT PRESS. SW
B427
BU
TORQUE CONV INLET FILTER SW TO HOISE
515
GY
BLOWER MOTOR (HI)
SCREEN SW
516
GN
BLOWER MOTOR (MEDIUM)
B447
PU
STEERING (HIGH) PRESS SW TO LOW PRESS
517
BU
BLOWER MOTOR (LO)
(STEERING)
521
YL
A/C SW TO REFRIGERANT SW
B748
BR
STEERING SPEED CTL SPEED IN
522
WH
A/C CLUTCH TO THERMOSTAT SW
B771
BR
FAN CONTROL SOLENOID RETURN
537
GN
TURN SIGNAL SW TO FLASHER
B926
GY
START AID TIMER OUTPUT
539
BU
TURN SIGNAL INDICATOR BASIC/RIGHT
B948
BR
ENG OVERSPEED CONT TO INDICATOR LAMP
540
WH
TURN SIGNAL INDICATOR LEFT
B994
GN
A/C CLUTCH SOL TO SHUTTER CONT PRESS. SW
C915
GY
ADEM DIAGNOSTIC CODES
C940
GN
EUI THROTTLE BYPASS - LO
600
BR
DASH LAMP BASIC
C972
YL
ELEVATED LOW IDLE ENABLE SW
601
GY
DASH LAMP HI
D740
BR
PARASITIC HYDRAULIC LOAD SOLENOID
602
WH
DOME LAMP
D741
YL
OIL COOLER DIVERTER SOLENOID
604
OR
STOP LAMP
D772
PU
LEFT TURBO INLET PRESS SENSOR
605
YL
TURN LAMP - LEFT
D982
PK
EUI TIMING CALIB
606
GY
TURN LAMP - RIGHT
D984
GN
AUTO RETARD CONT RESUME SW
607
PK
FLOOD LAMP - FRONT
D985
BR
AUTO RETARD ON SW
608
GN
FLOOD LAMP - REAR
D986
PK
AUTO RETARD OFF SW
610
OR
HEAD LAMP BASIC
D988
WH
AUTO RETARD AIR CONT VALVE
611
PU
HEAD LAMP HI
D989
BU
AUTO RETARD AIR SUPPLY VALVE
612
GY
BACKUP LAMP
D991
OR
AUTO RETARD PRESSURE SW
614
PU
PARK/TAIL/DASH LAMP
D992
PU
AUTO RETARD MANUAL RETARDER SW
619
GN
HEAD LAMP LO
D993
YL
AUTO RETARD SERVICE RESET
620
WH
FLOOD LAMP - FRONT (ENG. FLOOD LAMP)
D994
BU
AUTO RETARD SERVICE CLEAR
622
PU
FLOOD LAMP 3-WAY SW JUMPER
D996
PU
TRANSMISSION CONT SERVICE SET
623
BU
FLOOD LAMP 3-WAY SW JUMPER
D997
YL
TRANSMISSION CONT SERVICE CLEAR
631
GY
FOG LAMP - RIGHT
E750
PU
BODY UP POSITION SENSOR SIGNAL
632
WH
FOG LAMP - LEFT
635
BR
TURN SIGNAL COMMON
Lighting Circuits
Control Circuits
Ground Circuits
Basic Machine Circuits
Monitoring Circuits
Accessory Circuits
Off Machine Switch Specifications
Part No. Function Actuate Deactuate Contact Position
2M9346 Brake Air Pressure (Stop Lamp)
45 kPa MAX
(6.5 psi MAX)
5 kPa MIN
(0.5 psi MIN)
Normally
Open
3L6306
Service/Retarder Press (Tractn)
Service/Retarder Press (Trans)
55.2 ± 13.8 kPa
(8 ± 2 psi)
-
-
Normally
Closed
3T3195
Parking Brake Press (EMS)
Secondary Brake Press (Trans)
656 ± 35 kPa
(95 ± 5 psi)
552 ± 35 kPa
(80 ± 5 psi)
Normally
Open
4D4785 Retarder Press (Warning)
27.6 ± 3.4 kPa
(4.0 ± .5 psi)
-
-
Normally
Open
7N4447
Fuel Filter Press (EMS)
Torque Converter Inlet Filter (EMS)
119 ± 14 kPa
(17.0 ± 2.0 psi)
-
-
Normally
Closed
7N7854
Brake Oil Temp (EMS)
Converter/Retarder Temp (EMS)
123.9 ± 2.8°C
(255 ± 9°F)
112.8°C MIN
(235°F MIN)
Normally
Closed
7X5988 Engine Coolant Temp (Start Aid)
21.1 ± 2.8°C
(69.8 ± 5°F)
12.8°C MIN
(55°F MIN)
Normally
Closed
8T8639 Refrigerant Pressure (A/C)
344.5 ± 34.5 kPa
(50 ± 5 psi)
172.3 ± 21 kPa
(25 ± 3 psi)
Normally
Open
9G3341 Power Train Oil Temperature (EMS)
51.7 ± 2.8°C
(125 ± 5°F)
43.0°C MIN
(110°F MIN)
Normally
Closed
9G8009 Brake Air Pressure (EMS)
517 ± 35 kPa
(75.0 ± 5.0 psi)
448 ±35 kPa
(65.0 ± 5.0 psi)
Normally
Open
9X3040 Engine Coolant Flow (EMS)
362 ± 29 mN (45.6 mm ID point)
(1.3 ± .1 oz, 1.8 in ID point)
303 mN MIN
(1.1 oz MIN)
Normally
Open
9X7781
Left Hoist Screen Bypass Press (EMS)
Right Hoist Screen Bypass Press (EMS)
210 ± 70 kPa
(30 ± 10 psi)
-
-
Normally
Open
9X7781
Torque Converter Outlet Screen (EMS)
Transmission Supply (EMS)
210 ± 70 kPa
(30 ± 10 psi)
-
-
Normally
Open
9W0263 Auto Retarder Press
48.2 ± 13.8 kPa
(7.0 ± 2.0 psi)
24.1 kPa MIN
(3.5 psi MIN)
Normally
Closed
7N7849
Engine Coolant Temp (Shutter)
Aftercooler Temp (EMS)
88.0 ± 2.8°C
(190.0 ± 5.0°F)
79.0°C MIN
(174.0°F MIN)
Normally
Closed
3E7809 Steering Press (Steering Action)
1900 kPa MAX
(275 psi MAX)
1400 ± 140 kPa
(205 ± 20 psi)
Pins B-C (N.C.)
Pins B-A (N.O.)
3E6461 Steering Press (Steering Action)
11000 kPa MAX
(1600 psi MAX)
9000 ± 350 kPa
(1300 ± 51 psi)
Pins B-C (N.C.)
Pins B-A (N.O.)
7X2013
A/C Press (Shutter/Compressor)
Pins 1A-2A
1862 to 2275 kPa¹
(270 to 330 psi)
552 to 827 kPa2
(80 to 120 psi)
Normally
Open
7X2013
A/C Press (Shutter/Compressor)
Pins 3A-4A
241 to 414 kPa³
(35 to 60 psi)
1379 to 1586 kPa¹
(200 to 230 psi)
Normally
Closed
N.C. Normally Closed
N.O. Normally Open
¹ With a rising pressure.
² Below opening pressure.
³ Below closing pressure.
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows
through it.
REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the
contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
SENDER - A component that is used with a temperature or pressure gauge. The sender
measures the temperature or pressure. Its resistance changes to give an indication to the
gauge of the temperature or pressure.
RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it. The electromagnet
can open or close the switch part of the relay.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
much current flows through it. This does not destroy the circuit breaker and it can be reset to
become part of the circuit again.
SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil
that makes an electromagnet when current flows through it. The electromagnet can open or
close a valve or move a piece of metal that can do work.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
plugand receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Normally open switch that is closed due to an applied condition, and will open again with a
specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again
with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected
from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded
by being fastened to the machine.
Electrical Schematic Symbols And Definitions
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
REAR COMPARTMENT (AREA E)
REAR COMPARTMENT SIDEWALL (AREA J) RIGHT
2
1
3
4
5
9
10
12
13
7
11
15
7
8
6
6
14
16
15
18
7
19
13
20
22
24
23
7
21
17
21
L63
L37
2
1
2
1
2
4
3
2
1
4
2
1
2
1
1
2
4
2
1
2
1
4
3
3
5
1
2
8
7
1
4
5
6
2
2
1
3
4
5
7
6
8
3
7
4
5
2
1
2
2
1
1
2
1
2
2
1
C
A
B
5
1
4
2
2
1
2
1
4
10
9
3
4
2
1
2
2
1
1
3
6
1
2
1
2
3
2
1
2
2
1
3
5
1
4
2
3
1
5
2
10
9
8
7
6
5
4
3
2
1
8
1
2
3
3
1
C
3
11
4
5
7
6
2
4
3
5
1
A
B
2
1
C
1
A
B
C
C
B
A
10
9
8
7
6
5
2
4
3
2
1
15 14 13
15 14 13
12 11 10
12 11 10
9 8 7
9 8 7
6 5 4 3 2 1
6 5 4 3 2 1
F
E
D
C
B
A
F
E
D
C
B
A
6
5
1
4
02
00
00
ATCH8X-1025
8W-9735
8X-2419
CCC
BBB
AAA
CCC
ATCH
ATCH
A-9
B-9
B-9
B994-GN-14
XX
513-OR-14
522-WH-14
ZZ
ZZ
AAA
ZZ
BBB
BBB
BBB
BBB
BBB
NOTE: WITH SHUTTER CONTROL, REMOVE WIRE 522-WH-14
FROM COMPRESSOR. REPLACE BLADE TERMINAL WITH PIN
TERMINAL AND INSERT INTO PIN NUMBER 3 OF HARNESS AS. AAA.
PLUG WIRE B994-GN-14 FROM HARNESS AS. AAA INTO COMPRESSOR
WHERE 522-WH-14 WAS REMOVED.
SHUTTER
COOLANT
TEMP SW
7N-7849
AAA
AAA
113-OR 113-OR 913-BU
A/C
PRESSURE SW
7X-2013
SHUTTER
SOLENOID
7N-9719
913-BU
522-WH-14
B994-GN-14
YL-14
BK/WH-14
BK-14
OR-14
914-YL
914-YL
AAA
AAA
AAA
CCC
200-BK
914-YL
2A
4A
2
1
A/C COMPRESSOR
CLUTCH COIL
7N-4287
DDD
G
202-BK
E750-PU
BODY
DOWN
SENSOR
3E-0461
3
2
1
BK-18
BU-18
RD-18126-PK
GROUND
SOLENOID
+ BATTERY
A
A
THROTTLE
BYPASS SW
6T-3990
998-BR
XX
YY
3A
1A
200-BK
A
H H
A
176-OR
105-BR
121-YL
200-BK
308-YL
121-YL
101-RD
207-BK
200-BK-14
611-PU-14
441-OR
446-PU-14
201-BK
601-GY
540-WH
539-BU
200-BK-14
EE
EE
9 GA
TO FRONT
HOUSING
124-GN-14
522-WH-14
521-YL-14
A-5007X-6035EE
TO MOUNTING
BOLT
2
1
YY
XX
1
2
2
1
1
2
2
1
XX
YYYY
XX
1
2
2
1
XX
YYYY
XX
1
2
2
1
BR
BR
YY
YY
A716-PU
A736-YL
CYLINDER
HEAD
SOL 16
CYLINDER
HEAD
SOL 14
A736-YL
A714-BU
YY
YY
BR
BR
XX
YY
YY
YY
BR
BR
A735-WH
A715-GY
CYLINDER
HEAD
SOL 15
CYLINDER
HEAD
SOL 13
A713-GN
A735-WH
XX
YY
XX
YY
YY
YY
BR
BR
BR
BR
YY
BR
BR
BR
YY
YY
YY
XX
YY
XX
A713-GN
A735-WH
A715-GY
BR
YY
YY
YY
XX
A716-PU
A736-YL
A702-PU
A730-OR
A704-GN
A706-GY
A732-YL
A708-BR
A710-GY
A734-PK
A712-BR
A711-PU
A733-OR
A709-OR
A707-PU
A731-WH
A705-BU
BR
BR
YY
YYYY
YY
BR
BR
A701-GY
A729-YL
A729-YL
A703-BR
A705-BU
A731-WH
A731-WH
A707-PU
A709-OR
A733-OR
A733-OR
A711-PUA712-BR
A734-PK
A734-PK
A710-GY
CYLINDER
HEAD
SOL 11
YY
CYLINDER
HEAD
SOL 9
CYLINDER
HEAD
SOL 7
CYLINDER
HEAD
SOL 5
CYLINDER
HEAD
SOL 3
CYLINDER
HEAD
SOL 1
CYLINDER
HEAD
SOL 12
CYLINDER
HEAD
SOL 10
CYLINDER
HEAD
SOL 8
CYLINDER
HEAD
SOL 6
CYLINDER
HEAD
SOL 4
YY
XXXX
YY
YY
YY
BR
BR
BR
BR
YY
YY
YY
XXXX
YY
YY
YY
BR
BR
CYLINDER
HEAD
SOL 2
BR
BR
YY
YY
A714-BU
YY
A703-BR
YY
BR
BR
BR
BR
YY
YY
INJECTOR GP (16)
7E-8836
A708-BR
A732-YL
A732-YL
A706-GY
A729-YL
A704-GN
1
2
2
1
200-BK-14
200-BK-14
200-BK-14
L
A730-OR
A701-GY
200-BK-14
Q
Q
Q
607-PK-14 607-PK-14
607-PK-14
622-PU-14
623-BU-14
620-WH-14
149-PU-14
200-BK-14
620-WH-14
620-WH-14
619-GN-14
611-PU-14
10203-BK
A730-OR
A702-PU
200-BK-14
Q
Q
611-PU-14
619-GN-14
102-BU-14
102-BU-14
619-GN-14
611-PU-14
619-GN-14
611-PU-14
200-BK-14
200-BK-14
1
2
2
1
200-BK-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14200-BK-14
1
200-BK-14
102-BU-14
102-BU-14
200-BK-14
200-BK-14
A-8
Z
Z
Z
614-PU
540-WH
614-PU
614-PU
CUSTOMER
DATA
CONNECTOR
799-WH
818-BR
121-YL
251-BK
251-BK
QQ
818-BR
820-BU
250-BK
993-BR
997-OR
997-OR
450-YL
B948-BR
B948-BR
819-GY
892-BR
893-GN
B948-BR
B948-BR
C940-GN
C915-GY
C940-GN
C915-GY
892-BR
176-OR
612-GY
892-BR
893-GN
A
481-GN
A
1
446-PU-14
441-OR
601-GY
412-BU
406-PU
403-GN
413-BR
611-PU-14
A
311-WH
819-GY
310-PU
311-WH
308-YL
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
B748-BR
A
A
A
A
993-BR
A
A
A747-GY
A747-GY
D771-BR
A747-GY
A
A
TO DIVTR SOLENOID
&HYD LOAD SOLENOID
YY
D740-BR
B771-BR
D741-YL
D740-BR
B771-BR
B771-BR
D741-YL
200-BK
200-BK
200-BK 200-BK
200-BK
200-BK
A
A
A
A
A
YY
A
202-BK
A
T
200-BK
A
450-YL
112-PU-10 150-OR-14
15A
H
176-OR
150-OR-14
BU-18
BK-18
RD-18
GN-18
OR-18
STEERING
ACTION
CONTROL
9X-7823
PRIM STER
GROUND
+ BATTERY
OP MONITOR
TOS
113-OR
A/C COMPRESSOR
CLUTCH COIL
7N-4287
A/C REFRIGERANT
PRESS SW
8T-8639
NOTE A
T
T
START AID
TEMP SW
7X-5988
ALTERNATOR
9X-7803
ATCH
CONVERTER
TEMP SW
7N-7854
ENGINE SPEED
MAG PICKUP
3E-7886
998-BR
441-OR
437-BR
437-BR
406-PU
201-BK
201-BK
201-BK
201-BK
412-BU
412-BU
T
441-OR
AFTERCOOLER
TEMP SW
7N-7849
COOLANT
TEMP SENDER
6N-5926
COOLANT
FLOW SW
9X-3040
FUEL
FILTER SW
7N-4447
A746-PK
A980-BU
994-GY
997-OR
993-BR
997-OR
993-BR
993-BR
997-OR
997-OR
993-BR
995-BU
996-GN
998-BR
999-WH
997-OR
993-BR
A746-PK
A980-BU
994-GY
995-BU
996-GN
998-BR
999-WH
A
B
C
3
1
A
B
C
A
B
C
A
B
361-OR
360-GN
OR-18
YL-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
ANALOG RET
SIGNAL
+V ANALOG
WH-18
BK-18
OR-18
RD-18
BK-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
ATCH
ATCH
608-GN
202-BK
767-WH
767-WH
202-BK
202-BK
ANALOG RET
SIGNAL
+V ANALOG
GN-18
YL-18
OR-18
OR-18
YL-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
T
361-OR
998-BR
TURBO
OUTLET
PRESSURE
SENSOR
6V-1944
767-WH
A
LEFT LAMP
RIGHT LAMP
614-PU
604-OR
640-GN
OR
639-WH 3
4
2 TAIL IN
STOP IN
WH
GN
PU
STOP/TAIL
LAMP MODULE
7X-1670
HH
1
A
251-BK
2
TURBO
INLET
PRESSURE
SENSOR
6V-1926
635-BU
ENGINE
OIL
PRESSURE
SENSOR
6V-1964
ENGINE
COOLANT
TEMP
SENSOR
6V-1923
ENGINE
SPEED/
TIMING
SENSOR
3E-0487
311-WH
A
L40
C
636-GN
200-BK
C
A
B
C
C
C
C
250-BK
113-OR
GROUND LEVEL
SHUTDOWN SW
4D-1836
636-GN
123-WH
635-BU
820-BU
B
200-BK-14
229-BK-14
799-WH
A734-PK
A733-OR
A732-YL
A731-WH
A730-OR
A729-YL
799-WH
J
J
L
L3
J
GG
H
H
H
GG
HH
AA
GG
A
A
H
121-YL
121-YL
H
H
H
A
A
A
A
H
A
A
J
A712-BR
A
F
C
C
C
C
F
J
J
J
J
103-YL
A
A
A
A
AA
A
A
A
614-PU
A711-PU
A
A
J
J
J
J
J
J
J
J
J
J
J
A710-GY
A709-OR
A708-BR
A707-PU
A706-GY
L63
A705-BU
A704-GN
A703-BR
L63
L63
602-WH
L63
L63
L63
L63
A493-YL A492-OR
B427-BUA491-WH
A702-PU
540-WH
614-PU
A701-GY
L32
L32
TORQUE CONVERTER
OUTLET SCREEN SW
9X-7781
L32
L82
L83
L83
L83L83
L70
L70
L70
L37
L78
L79
L79
L71
L72
L72
L72
L77
L54
L40
L40
L40
L70
L37
L37
L79
L78
L78
L78
L44
L64
L64
L49
L77
L77
L77
L77 L77
L77
L45
L45
L37
L72
L71
L72
L71
L8
L8
L76
L69
L32
L32
L47
L47
L36
L36
L39
L39
L40
L64
L64
L64
200-BK
L64
L59
L59
L59
L59
L59
L58
L58
L58
L58
361-OR
L24
360-GN
L24
L24
B
L56
994-GY
993-BR
997-OR
A746-PK
A980-BU
995-BU
999-WH
HH
HH
HH
HH
HH
HH
HH
A
A
A
D
F
996-GN
998-BR
438-YL
L56
C972-YL
C915-GY
A747-GY
B748-BR
A489-BU
138-GN
201-BK
417-GY
413-BR
405-GY
B948-BR
893-GN
892-BR
C940-GN
430-BU
L56
308-YL
307-OR
123-WH
446-PU
T
201-BK
BRAKE
OIL SW
7N-7854
L48
L48
L35
L49
L37
A430-OR
A983-BU
A700-OR
L36
L36
150-OR-14
L37
L36
L35
L35
150-OR-14
L35
L34
L34
L34
L34
L49
L49
L55
L55
L55
L55
L38 L38
L38
200-BK-14
202-BK
L49
L32
L32
L32
L25
L25
L24
L24
L9
L39
L39
13
2
67
L48
L48
L48
L45
L45
L45
L47
L47L47
L46
L46
L46
L46
L46
L46
308-YL
201-BK
200-BK-8
BK
BK
BK
66
62
61
60
48
47
46
1
14
15
28
29
42
43
56
17
26
31
40
45
54
59
68
16
27
30
41
44
55
58
69
39
53
36
22
23
65
64
8
7
24
37
9
38
34
49
11
32
21
ENGINE
GROUND
SOL 14&16 RETURN
SOL 13&15 RETURN
SOL 10&12 RETURN
SOL 9&11 RETURN
SOL 6&8 RETURN
SOL 5&7 RETURN
SOL 2&4 RETURN
SOL 1&3 RETURN
SOLENOID 16 POWER
SOLENOID 15 POWER
SOLENOID 14 POWER
SOLENOID 13 POWER
SOLENOID 12 POWER
SOLENOID 11 POWER
SOLENOID 10 POWER
SOLENOID 9 POWER
SOLENOID 8 POWER
SOLENOID 7 POWER
SOLENOID 6 POWER
SOLENOID 5 POWER
SOLENOID 4 POWER
SOLENOID 3 POWER
SOLENOID 2 POWER
SOLENOID 1 POWER
SHUTDOWN SIGNAL D
SHUTDOWN SIGNAL C
OIL PRESS. SIGNAL
ANALOG RETURN
+V ANALOG SUPPLY
BOOST PRESSURE
TURBO INLET
COOL. TEMP SIG.
ENGINE SPEED
+V TIMING
DIGITAL RETURN
D982-PK
A748-GY
COOL TEMP (EMS)
12
52
50
ELEV IDLE ENABLE
DIAGNOSTIC ENABLE
ATMOSPHERIC PRESS
ENGINE ON (EMS)
OIL PRESS (EMS)
OVERSPEED LAMP
CAT DATA LINK +
CAT DATA LINK -
THROTTLE BYPASS
AIR FILTER LAMP
DIAGNOSTIC LAMP
THROTTLE SIGNAL
+V THROTTLE
+ BATTERY
+ BATTERY
35
TIMING CAL -
TIMING CAL +
63
4
33
19
L44
L41
L41
25
L41
3
18
10
51
70
57
5
6
20
-BATTERY
-BATTERY
C
B447-PU
201-BK
STEERING SW
HI PRESS
3E-6461
200-BK-12
A736-YL
A716-PU
A735-WH
L22
L22
L22
L9
L9
L31
L30
L30
L27
A715-GY
202-BK
202-BK
112-PU-14
202-BK
360-GN
202-BK
202-BK
202-BK
202-BK
GG
GG
L62
112-PU-12
L27
L24
L24
L25
L25
L25
L23
L23
L23
L1
L21
L21
L21
L73
L33
L12
L12
L41
L28
L28
L28
L28
L29
L29
L33
L33
L82
L82
BK-18
L29
L2
L5
L16L16
L16
L16
L13
L13
L13
L15
L15
L15
L17
202-BK
L60
L53
L49
L17
L17
L18
L18
L18
L18
L7L7
L7
L68
L68
L63
L67
L67
L60
L67
L67
C
C
C
C
L41
L60
A
J
J
L20
L38
K
K
K
A
L84
L30
L30
L27
112-PU-14
L53
J
Q
Q
L3
F
F
F
F
F
F
F
201-BK
893-GN
892-BR
893-GN
892-BR
202-BK
ARC SUPPLY
VALVE
3E-8691
202-BK
A
200-BK-14
FOG
LAMP
9X-7165
101-RD-10
BK
BK
L65
L65
D984-GN
521-YL-14
522-WH-14
607-PK-14
124-GN-14
200-BK-14
176-OR
200-BK-14
A
A
D992-PU
D991-OR
454-GN
454-GN
200-BK
A983-BU
A700-OR
A983-BU
A700-OR
430-BU
A430-OR
A983-BU
A700-OR
A430-OR
707-PU
200-BK-14
891-BU
202-BK
430-BU
2
200-BK-14
891-BU
891-BU
430-BU
LAMP
7N-5876
3
2
1
2
2 1
3
L31
799-WH
A
619-GN-14
B
START AID
CONTROL
9X-3207
123-WH
202-BK
201-BK
+ BATTERY
A
767-WH
L7
L7
L6
WH-18
NOTE E
454-GN
SOLENOID
GROUND
RD-18
772-BR
WH-18
BK-18
PANEL
LAMP
7N-5876
BASE
2G-0151
B-7014E-0718LL
CC
AA
Q
NOTE E: WITH AUTO RETARDER CONTROL, REMOVE
123-WH AND CONNECT 202-BK
200-BK
C
C
C C C
C
A
C
C C C C
403-GN
L33
L33
L33
L33
L33
A
BK-18
A A A A
J
SIG
+
J
202-BK
201-BK
200-BK
539-BU
540-WH
-
441-OR
446-PU-14
539-BU
540-WH
601-GY
611-PU-14
L19
L10
L10
L10
200-BK-14
200-BK-14
L13
L7
L7
L7
601-GY
XX
BK-18
454-GN
D989-BU
D988-WH
K
K
K
K
K
892-BR
893-GN
A
D986-PK
D985-BR
202-BK
202-BK
202-BK
202-BK
202-BK
D994-BU
D994-BU
D993-YL
SERVICE SET SW
9D-3721
SERVICE CLEAR SW
9D-3721
AUTO RETARD
OFF/ON SW
6T-3991
200-BK
202-BK
202-BK
202-BK
H
H
H
201-BK-14
H
H
891-BU
K
A
K
A
A
450-YL
451-BR
451-BR
L31
891-BU
4
3
K
707-PU
202-BK
601-GY
200-BK
450-YL
200-BK
799-WH
L31
112-PU-12
K
L33
449-BU
200-BK-14
F
M
L73
251-BK
601-GY
601-GY
600-BR
S
S
S
202-BK
NOTE C
NOTE C
601-GY
200-BK-14
CUSTOMER
DATA
CONNECTOR
818-BR
819-GY
250-BK
820-BU
QQ
E
D
C
200-BK
RR
RR
ALT
202-BK
A
176-OR
D988-WH
426-BR
SS
RR
QQ
540-WH
RD
BR
1
2
RD
BR
1
2
PARK/
TURN
LAMP
3T-3967
PARK/
TURN
LAMP
3T-3967
L27
D992-PU
D991-OR
454-GN
105-BR
NOTE
00
00
03
02
01
446-PU-14
01
00
L
450-YL
D989-BU
D988-WH
S
201-BK
308-YL
E
819-GY
799-WH
250-BK
820-BU
00
QQ
03
2
251-BK
307-OR
01
6
307-OR
307-OR
307-OR 307-OR
307-OR
251-BK
604-OR
605-YL
606-GY
202-BK
02
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
A218-BK
A216-BK
A217-BK
473-GY
A215-BK
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
D984-GN
D984-GN
QQ
K
200-BK
L76
408-WH
419-YL472-OR
408-WH
JJ
ENGINE
GROUND
FRAME
GROUND
BK-4
419-YL
472-OR
FRAME
GROUND
MM
CAB
GROUND
407-PK
D986-PK
D985-BR
200-BK
126-PK
307-OR
409-OR
306-GN
470-PU
M
201-BK
A489-BU
105-BR
200-BK-14
200-BK
START AID
BREAKER
3T-8728
315-GN-12 101-RD-10
A GG
202-BK
3
202-BK
135-BU
210-BK
PAYLOAD
MONITOR
GN LAMP
8T-9684
PAYLOAD
MONITOR
RED LAMP
8T-9683
799-WH
PAYLOAD
MONITOR
OPERATOR
PANEL
9X-6847
202-BK
202-BK
OPERATOR STATION
B-12
A-2/A-1231-8761JJ
02
02
799-WH
799-WH
860-PK
861-PU
251-BK
858-GY
859-YL
251-BK
635-BU
636-GN
799-WH
636-GN
635-BU
799-WH
B
251-BK
794-YL
138-GN
6
5
4
3
2
1
1
2
3
4
RIGHT REAR
STRUT SENSOR
101-9980
LEFT REAR
STRUT SENSOR
101-9980
860-PK
861-PU
251-BK
799-WH
WH-18
BK-18
OR-18
SIGNAL
+V
GROUND
3
2
1
WH-18
BK-18
OR-18
SIGNAL
+V
GROUND
3
2
1
799-WH
799-WH
251-BK
251-BK
861-PU
860-PK
01
PAYLOAD
MONITOR
CONTROL
9X-6846
799-WH
A
635-BU
636-GN
794-YL
859-YL
858-GY
861-PU
860-PK
863-BU
864-BR
865-GY
867-PU
866-PK
865-GY
891-BU
864-BR
863-BU
860-PK
861-PU
858-GY
LEFT FRONT
STRUT SNSR
101-9980
RIGHT FRONT
STRUT SNSR
101-9980
PAYLOAD
MONITOR
GREEN
LAMP
8T-9684
PAYLOAD
MONITOR
RED
LAMP
8T-9683
1
202-BK
1
UNUSED SW
UNUSED SINKING DRIVER
UNUSED PWM, FREQ, SW
SPARE
UNUSED PWM
UNUSED PWM
GROUND
MANUAL RETARD PRESS SW
AUTO RETARD PRESS SW
138-GN
794-YL
202-BK
A
4
1
3
SERVICE BRAKE
AUTO RETARD LAMP
OIL PRESSURE SW
ENGINE SPEED
AIR SUPPLY VALVE
AIR CONTROL VALVE
ACCELERATOR SW
SECONDARY BRAKE SW
RD
RD
BK
BK
1
1
2
2
HARNESS CODE 3
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
BED RAISE
TEST/SET
RX IN
TX KEY OUT
TX OUT
TX LCD OUT
R REAR PR
R FRONT PR
LINK GND
GREEN LAMP
RED LAMP
GROUND
+24V (IN)
L REAR PR
XMSN SPD
LCD CLOCK
LCD LATCH
L FRONT PR
NEUTRAL
MODE
HARNESS CODE 1
HARNESS CODE 2
HARNESS CODE 0
UNUSED SW TO GND
UNUSED SW TO GND
UNUSED SW TO GND
818-BR
UNUSED SINKING DRIVER
UNUSED SINKING DRIVER
UNUSED SINKING DRIVER
867-PU
866-PK
865-GY
PU-18
864-BR
1
2
3
4
5
6
7
GROUND
+ BATTERY
GN-18
BK-18
863-BU
251-BK
138-GN
8
WH-18
BU-18
BR-18
GY-18
PK-18
858-GY
859-YL
251-BK
251-BK
799-WH
799-WH
1
2
3
GROUND
+V
SIGNAL
OR-18
BK-18
WH-18
1
2
3
GROUND
+V
SIGNAL
UNUSED SINKING DRIVER
UNUSED SW TO GND
UNUSED SW TO GND
UNUSED SW TO GND
UNUSED SW TO GND
AUTO RETARD OFF
AUTO RETARD ON
RESUME
+10V SENSOR SUPPLY
+ BATTERY
DATA LINK -
DATA LINK +
UNUSED
CLEAR SWITCH
SET SWITCH
UNUSED
UNUSED
UNUSED
UNUSED
201-BK
F-102
635-BU
799-WH
799-WH
636-GN
2
2
1
1
BK
BK
RD
RD
CIRCUIT GROUPING
DESIGNATION
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
K
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
DD
NOTE C: TAPE BACK CIRCUITS D984-GN AND 202-BK
102-8963
5T-8598
E-142A-6494GG
B-15102-8856HH
C-155T-9326
8W-0639
2A-6492
CABLE AS.
5T-4666
2A-7347
Z
X
W
C-5
C-5
E-1
7T-3418
5T-9411
6G-9462
6T-4300
6T-4301
7I-4619
5T-9414
7I-4618
8X-9992
102-9096
5T-9412
7I-4617
2A-6907
102-8602
A-6
NOTE B: NORMALLY CLOSED WHEN DOOR OPEN
E-4
A-2
A-2
CC
BB
AA
WIRE AS.
A-13
A-14
B-1
F-2
D-4
C-9
D-13
B-13
B-13
B-12
B-12
B-11
V
U
T
S
R
Q
105-BR
N
M
L
K
J
H
G
F
E
D
C
B-8
01
A
HARNESS AS.
LOCPART NO.IDENT
NOTE A: NORMALLY OPEN BEFORE REFRIGERANT CHARGE
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAGE
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
AND XMSN SHIFTER IN NEUTRAL
202-BK
DIAG ENABLE SW
6T-6066
B
2
B
308-YL
B
B
109-OR-4
1
1
2
2
WH-18
BK-18
RD-18
T
426-BR
T
315-GN-12
446-PU-14
J
9
201-BK
201-BK
200-BK-14
200-BK
200-BK
A489-BU
DD
GG
604-OR
103-YL
STOP
LAMP SW
2M-9346
202-BK
BRAKE
SYSTEM
AIR SW
9G-8009
408-WH
201-BK
472-OR
201-BK
720-PU
202-BK
PARKING
BRAKE SW
3T-3195
SECONDARY
BRAKE SW
3T-3195
SECONDARY/PARKING
BRAKE TEE
707-PU
636-GN
799-WH
SERVICE/RETARDER
BRAKE TEE
767-WH
767-WH
772-BR
706-BR
202-BK
SERVICE/
RETARDER SW
3L-6306
SERVICE/
RETARDER SW
3L-6306
799-WH
123-WH
250-BK
818-BR
820-BU
819-GY
107-WH
107-WH
635-BU
720-PU
706-BR
202-BK
200-BK-14
203-BK
D741-YL
307-OR
308-YL
450-YL
02
D740-BR
A
H
BACKUP
RELAY
3T-0376
202-BK
200-BK
D985-BR
D986-PK
150-OR-14
115-PK-14
138-GN
150-OR-14
176-ORARC
ENGINE CONTROL BREAKER
6N-8589
112-PU-14 10A
150-OR-14
121-YL
612-GY
321-BR
308-YL
20A
10A
10A
10A
15A
15A
DOME, STOP &
TURN LAMP
BREAKER
9G-9487
KEY
BREAKER
9G-9487
STEERING
BLEED
BREAKER
9G-9487
112-PU-10
112-PU-10
101-RD-10
101-RD-10
FRONT FLOOD
LAMP BREAKER
3T-2662
132-PK
126-PK
113-OR
138-GN
122-BU
123-WH
TRACTION AID
XMSN CONTROL
OPERATOR MONITOR
AUTO LUBE
AIR DRYER
GAGES
112-PU-14
112-PU-14
101-RD-10
120-YL
129-PU
121-YL
CONVERTER
CIGAR LIGHTER
BACKUP ALARM
112-PU-14
10A
10A
10A
112-PU-14
112-PU-14
112-PU-14
10A
10A
10A
112-PU-14
112-PU-14
112-PU-14
105-BR
105-BR
103-YL
101-RD-10
101-RD-10
101-RD-10
149-PU-14
124-GN-14
139-OR-10
449-BU
307-OR
307-OR
105A
ALT BREAKER
3E-7294
L81
L81
L33
L51
L85
L80
123-WH
601-GY
16
10
20
19
18
17
15
14
13
3
7
6
5
9
4
12
11
2
1
8
H
H A
A
A
A
A
6
1
3
4
10
9
2
8
5
7
610-OR-14
2
1
BK
BK
200-BK
DIAGNOSTIC CONNECTOR
BRAKE RETRACT
BREAKER
3T-8728
MAIN
RELAY
3T-0376
LUBE
SOLENOID
5T-4434
T
LADDER LAMP
BREAKER
6N-8589
801-PK
200-BK
139-OR-10
T
K
K
H
129-PU
280-BK
109-OR-4
109-OR-4
308-YL
112-PU
308-YL
200-BK
150-OR-14
123-WH
121-YL
126-PK
15A
HEAD LAMP
(HIGH) BREAKER
3T-2662
203-BK
15A
FUSES
3K-8782
FUSE HOLDERS
4K-5122
207-BK
307-OR
AIR CONDITIONER
BREAKER
6N-8589
112-PU
102-BU-14
115-PK-14
105-BR
109-OR
308-YL
101-RD
101-RD
101-RD-10
101-RD-10
10A
10A
10A
112-PU-14
112-PU-14
112-PU-14
135-BU
210-BK
200-BK
120-YL
200-BK
123-WH
451-BR
450-YL
105-BR
601-GY
4
5
1
3
2
7
6
AA
24/12 VOLT
CONVERTER
9G-6981
RD-18
BK-18 2
1
WH/RD-18
WH/BK-18
3
2
1
+ BATTERY
GROUND
+12 VOLT
GROUND
L80
L80
202-BK
201-BK-14
200-BK-14
200-BK-8
202-BK
200-BK
200-BK-14
612-GY
105-BR
149-PU-14
109-OR-4
101-RD-4
103-YL
105-BR
115-PK-14
102-BU-14
124-GN-14
120-YL
122-BU
129-PU
138-GN
113-OR
132-PK
109-OR
601-GY
01
3
5
1
8
7
4
QQ
QQ
QQ
251-BK
HH C
605-YL
606-GY
614-PU
608-GN
200-BK
E-2
BRAKE
RETRACT
8C-9514
01
L31
WH
BK
WH
BK
GROUND
SIGNAL
+V
C
B
A
(L)
S-2
(R)
S-1
TRANSMISSION SW
6V-5828
BR-18
WH-18
OR-18
YL-18
GN-18
BU-18
BK-18
GROUND
GND VERIFY
GEAR 5
GEAR 4
GEAR 3
GEAR 2
GEAR 1
10
9
8
7
6
5
4
3
2
1
L69
UP SHIFT
SOLENOID
7X-1120
LOCKUP
SOLENOID
7X-1120
DOWN SHIFT
SOLENOID
7X-1120
PROPORTIONAL
SOLENOID
3T-0062
L62
L69
L24
L51
L85
L80
L66
L68
L67
C
608-GN
202-BK
201-BK
105-BR
120-YL
200-BK
200-BK
200-BK
200-BK
200-BK-10
777-PU-10614-PU
608-GN
604-OR
612-GY
G
F
767-WH
202-BK
5
6
1
2
3
4
QQ
769-BU
202-BK
767-WH
770-GN
7I-4733
201-BK
S
408-WH
472-OR
612-GY
231-BK
200-BK
S
WH-18
E750-PU
126-PK
BK-18
OR-18
XX
J
608-GN
612-GY
122-BU
122-BU
200-BK
200-BK-10
AIR
START
SOLENOID
5T-4434
GN
BK
E
C
306-GN
1
2
3
1
2
WH
BK
MOTOR
2
2
2
1
1
1
GROUND
SIGNAL
+V
C
B
A
GROUND
SIGNAL
+V
C
B
A
S
BK
BK
BK
U
E
E
4
1
2
3
WHEEL SPEED
SENDER
3T-2470
WHEEL
SPEED
SENDER
3T-2470
U
U
V V G
G
GGG
BACK-UP
ALARM
3T-1815
LH BACK-UP
LAMP
9X-4381
RH BACK-UP
LAMP
9X-4381
XMSN
SPEED
SENDER
3E-6955
4 WAY
SOLENOID
9G-9988
BK
767-WH
202-BK
769-BU
202-BK
767-WH
770-GN
RH STOP/
TAIL
LAMP
6V-1108
LH STOP/
TAIL
LAMP
6V-1108
LH TURN
LAMP
6V-1119
RH TURN
LAMP
6V-1119
200-BK
640-GN
606-GY
J
H
A
B
C
D
E
I
F
G
639-WH
605-YL
709-OR
710-GN
705-PK
704-GY
703-BU
721-BR
722-WH
723-OR
724-YL
725-GN
202-BK
202-BK
777-PU-10
774-YL
775-BR
773-GY
774-YL
775-BR
773-GY
202-BK
202-BK
202-BK
T
AIR DRYER
2G-2159
709-OR
710-GN
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
705-PK
704-GY
703-BU
709-OR
710-GN
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
705-PK
704-GY
703-BU
227-BK
217-BK
218-BK
219-BK
202-BK
280-BK
12
9
8
7
17
13
14
15
6
5
4
3
2
1
10
19
16
20
18
11
L65
521-YL-14
522-WH-14
122-BU
123-WH
126-PK
124-GN-14
138-GN
00
200-BK
200-BK
202-BK
UNUSED
36
35
30
29
28
27
2
21
16
15
202-BK
107-WH-14
632-WH-14
631-GY-14
5
12
10
AUTO RETARDER
CONTROL
3E-3663
200-BK-8
321-BR
200-BK-14
201-BK
126-PK
JJ
308-YL
612-GY
202-BK
202-BK
202-BK
121-YL
768-OR
200-BK
149-PU-14
102-BU-14
201-BK
103-YL
801-PK
113-OR
123-WH
115-PK-14
129-PU
124-GN-14
C-6
F
L70
L61
L75
L75
L75
4
725-
724-
723-
722-
721-
L76
L76
L38
L44
L20
L20
L20
L19
L84
L84L84
L61
L62
L24
L85
L50
L52
L54
TACHOGRAPH
7D-1513
123-WH
601-GY
3
2
1
202-BK
2
H
202-BK
2A-7132QQ
801-PK
202-BK
200-BK
200-BK
200-BK
201-BK-14
201-BK
207-BK
122-BU
306-GN
608-GN
200-BK
612-GY
614-PU
103-YL
601-GY
619-GN-14
200-BK-8
441-OR
327-PK-14
115-PK-14
149-PU-14
102-BU-14
410-WH
113-OR
200-BK
+ 12V
+ BATTERY
XMSN SP
GROUND
TEST
ID CODE 3
ID CODE 2
ID CODE 1
ID CODE 0
ID CODE 4
RIGHT SP
RIGHT SOL
LEFT SOL
PROPN SOL
LEFT SP
BRAKE
2
5
19
18
17
16
13
12
11
20
15
14
10
9
8
7
6
4
3
1
5
4
3
2
1
A
D
D
04
A430-OR
00
474-WH
3
A
2
1
H
H
H
103-YL
132-PK
113-OR
105-BR
103-YL
RD
107-WH-14
00
405-GY
H
H
H
01
H
H
BK
13
14
37
18
17
149-PU-14
19
7
6
20
34
619-GN-14
149-PU-14
201-BK
121-YL
612-GY
308-YL
622-PU-14
610-OR-14
623-BU-14
607-PK-14
441-OR
113-OR
419-YL
408-WH
321-BR
614-PU
426-BR
A489-BU
124-GN-14
522-WH-14
203-BK
406-PU
412-BU
413-BR
405-GY
403-GN
201-BK
410-WH
409-OR
NC
NC
L71
L71
HH
HH
HH
HH
HH
HH
HH
102-BU-14
767-WH
132-PK
132-PK
768-OR
768-OR
202-BK
202-BK
700-PK
700-PK
215-BK
214-BK
213-BK
212-BK
216-BK
770-GN
775-BR
774-YL
773-GY
769-BU
767-WH
772-BR
33
32
31
25
E750-PU
D
L60
604-OR
103-YL
604-OR
20
19
14
4
18
2
17
10
6
8
15
12
11
1
13
9
3
16
5
7
XX
XX
5T-9413
X
X
X
X
Y
Y
Y
Y
B-5017I-4821
NOTE F: WITH AUTO RETARD, REMOVE WIRES 200-BK AND
454-GN AND TAPE BACK. CONNECT WIRES 202-BK (2)
AND D992-PU TO PRESSURE SW 4D-4785
Y
NOTE F
Y
Y
X
X
X
X
L81
X
W
WW
W
998-BR
7
2
1
818-BR
820-BU
250-BK
799-WH
819-GY
307-OR
XX
601-GY
307-OR
03
XX
315-GN-12
311-WH
200-BK-14
L53
231-
726-
L85
L66
L67
L68
L67
L66
L70
L20
L62
L24
L52
L50
L69
L68
773-GY
E
D
B
A
A
C
18
23
22
19
6
8
10
3
15
14
17
4
25
2
12
207-BK
TRANSMISSION
SUPPLY SW
9X-7781
TRANSMISSION
FILTER SW
9G-3341
426-BR
426-BR
201-BK
426-BR
T
STEERING SW
LO PRESS
3E-7809
STEERING
BLEED
SOLENOID
6T-8046
B
C
A
407-PK
B
202-BK
202-BK
310-PU
GG
437-BR
B
437-BR
122-BU
306-GN
608-GN
201-BK
200-BK
606-GY
605-YL
426-BR
B447-PU
417-GY
417-GY
612-GY
614-PU
2
1
200-BK
327-PK
327-PK
A
T
RIGHT
HOIST SCREEN SW
9X-7781
LEFT
HOIST SCREEN SW
9X-7781
481-GN
202-BK
767-WH
202-BK
767-WH
770-GN
769-BU
775-BR
774-YL
212-BK
213-BK
214-BK
215-BK
216-BK
A
893-GN
BK
11
1
2
3
4
9
14
5
7
6
10
13
12
8
OPERATOR STATION
407-PK
13
9
16
5
21
20
7
24
1
818-BR
437-BR
A
A
820-BU
250-BK
310-PU
200-BK-8
101-RD-4
109-OR-4
777-PU-10
202-BK
202-BK
BC
777-PU-10
DD
202-BK
TACHOMETER
8C-5471
LAMP
5D-0019
LAMP
5D-0019
STEERING
BLEED
CONTROL
9G-9287
TRACTN AID
SPEEDOMETER
GY-18
GN-18
PK-18
OR-18
YL-18
BK-18
WH-18
SPEED IN
+ BATTERY
GROUND
7
6
5
4
3
2
1
794-YL
LAMP
5D-0019
101-RD-4
01
L20
451-BR
450-YL
T
799-WH
K
A
201-BK
L64
OPERATOR
MONITOR
TEST SW
6T-6066
A
A
COOLANT
TEMP GAGE
4W-0483
BRAKE OIL
TEMP GAGE
4W-2067
123-WH
449-BU
200-BK
02
00
K
K
IGN
SEND
GRD
IGN
SEND
GRD
200-BK
B-10
PARK BRAKE
XMSN FILTER
BK AIR PR
TC/RET TEMP
FUEL FILTER
PRIM STER
COOL FLOW
COOL TEMP
NEUTRAL
+ BATTERY
GROUND
ALTERNATOR
ENG OIL PR
ALARM
LAMP
FUEL PR
TEST
11
20
19
17
202-BK
15
14
13
12
10
9
8
7
6
5
4
3
2
1
OPERATOR
MONITOR
8C-3508
A
113-OR
403-GN
426-BR
405-GY
406-PU
407-PK
408-WH
410-WH
412-BU
413-BR
437-BR
A489-BU
419-YL
409-OR
201-BK
411-PK
415-GN
L56
601-GY
601-GY
601-GY
601-GY
123-WH
123-WH
123-WH
123-WH
123-WH
123-WH
123-WH
446-PU
446-PU
200-BK
200-BK
601-GY
200-BK
200-BK
799-WH
L45
PK-18
BK-18
GN-18
LUBE SOL
GROUND
+ BATTERY
3
2
1
AUTOLUBE
CONTROL
7T-3823
107-WH-14
150-OR-14
150-OR-14
A
202-BK-18
726-BU
327-PK-14
BACKUP
LAMP SW
6T-3991
L84
451-BR
450-YL
L75
L61
L62
L56
L44
L74
310-PU
310-PU
202-BK
F
F
FA
A
A
A
201-BK
446-PU-14
799-WH
799-WH
799-WH
201-BK
415-GN
411-PK
202-BK
XMSN
SPEED
DISTRIBUTOR
3T-5438
B
BRAKE
RETRACT SW
9D-3721
21
1 2
3
32
1
BED RAISE
ID CODE 3
ID CODE 0
ID CODE 2
LEVER 5
LEVER 4
LEVER 3
LEVER 2
LEVER 1
+10V
XMSN SPEED
GEAR GND VERIFY
GND VERIFY
FRONT GR 5
FRONT GR 4
FRONT GR 3
FRONT GR 2
FRONT GR 1
LKUP SOL
+ BATTERY
GROUND
UP SOL
DOWN SOL
RETARDER
BRAKE
GEAR 1
GEAR 2
GEAR 3
GEAR 4
GEAR 5
24
N/C
N/O
F
DOME
LAMP
7X-6398
SERVICE
METER
3T-8325
TRACTION
AID TEST SW
4D-1836
CIGAR
LIGHTER
9W-0335
KEY SW
9G-7641
AIR
PRESSURE
GAGE
1W-3306
103-YL
200-BK
201-BK
415-GN
601-GY
A
200-BK
200-BK
A
L53
L52
481-GN
446-PU
QQ
470-PU
202-BK
202-BK
706-BR
720-PU
202-BK
202-BK
126-PK
710-GN
321-BR
121-YL
2
1
4
6
3
5
707-PU
202-BK
202-BK
202-BK
202-BK
202-BK-18
BACKUP
ALARM SW
6G-4195
SHIFT LEVER SW
9W-0681
EPTC-II
TRANSMISSION
CONTROL
3E-5390
321-BR
121-YL
202-BK
707-PU
706-BR
720-PU
126-PK
709-OR
721-BR
722-WH
723-OR
724-YL
725-GN
705-PK
704-GY
703-BU
227-BK
217-BK
218-BK
219-BK
710-GN
710-GN
737-GN
736-YL
733-BR
735-OR
734-WH
470-PU-18
716-BU-18
716-BU-18
715-GN-18
715-GN-18
714-YL-18
714-YL-18
713-OR-18
713-OR-18
711-BR-18
711-BR-18
712-WH-18
712-WH-18
LEVER 5
LEVER 4
LEVER 3
LEVER 2
LEVER 1
NEUTRAL
GND VERIFY
GROUND
10
9
8
7
6
5
4
3
2
1
601-GY
200-BK
121-YL
612-GY
608-GN
L74
308-YL
326-PU
105-BR
200-BK
129-PU
767-WH
700-PK
BK
RD
123-WH
449-BU
139-OR-10
777-PU-10
201-BK
200-BK
201-BK
7E-9211
ST
ON
OFF
B
S
C
R
799-WH
27
28
36
138-GN
801-PK
200-BK
FLASHER
8D-6946
537-GN103-YL
326-PU
306-GN
200-BK
768-OR
710-GN
123-WH
449-BU
B748-BR
202-BK
DOME
LAMP SW
9D-4068
NOTE B
OR-18
WH-18
YL-18
BU-18
BK-18
RD-18
+ BATTERY
GROUND
STEER SOL
RESET
OFF (KEY)
OFF
7
6
5
4
3
2
1
103-YL
602-WH
103-YL
602-WH
103-YL
200-BK
602-WH
37
22
3
1
859-YL
R
24
26
31
32
14
40
16
21
6
7
13
39
10
8
20
2
19
200-BK
4
200-BK
30
200-BK
F
866-PK
867-PU
5
202-BK
107-WH-14
200-BK-14
F
4
ID CODE 2
ID CODE 3
5
1
2
WH-18
BK-18
YL-18
FRONT GR 1
1
4
2
3
ID CODE 1
GROUND
FRONT GR 2
+ BATTERY
OR-18
FRONT GR 3
3
6
7
BR-18
GY-18
PU-18
BU-18
RD-18
GN-18
FRONT GR 5
TRANSMISSION
GEAR INDICATOR
8C-9609
FRONT GR 4
126-PK
202-BK
733-BR
734-WH
735-OR
736-YL
737-GN
202-BK
202-BK
819-GY
L74
794-YL
636-GN
635-BU
251-BK
799-WH
A
A
306-GN
126-PK
307-OR
200-BK
470-PU
200-BK
NEUTRAL
5
632-WH-14
631-GY-14
202-BK
E750-PU
L64
L64
L64
126-PK126-PK
C972-YL
207-BK
1
3
GN-18
BK-18
PU-18
OR-18
1
4
2
3
START RELAY
GROUND
START SW
+ BATTERY
WH-18
BR-18
132-PK
768-OR
799-WH
L30
207-BK
H
L51
L50
L11
L11
H
J
JA
A
L45
START AID SW
8C-9812
2
6
7
105-BR
8
+
998-BR
997-OR
9
993-BR
B
109-OR-4
H
H
A
A
201-BK
L26
L26
YL-18
OR-18
BU-18
GY-18
311-WH
607-PK-14
PK-18
610-OR-14
622-PU-14
149-PU-14
614-PU
410-WH
103-YL
201-BK
231-BK
726-BU
3
4
5
9
8
7
1
2
6
210-BK
135-BU
623-BU-14
200-BK
102-BU-14
115-PK-14
619-GN-14
601-GY
2
8
9
3
6
1
7
4
5
997-OR
XX
513-OR-14
229-BK-14
XX
XX
XXXX
XX
XX
XX
XX
XX
XX
XX
XX
XX
522-WH-14
513-OR-14
521-YL-14
481-GN
403-GN
407-PK
XX
XX
XX
XX
XX
451-BR
202-BK
201-BK
200-BK-14
F-1/B-2
L49
GN-18
L26
200-BK-14
405-GY
L54
202-BK
L80
777-PU-10
L54
BK-4
200-BK-10
200-BK-8
OPERATOR STATION
MODE
TEST/SET
BRAKE OIL
SENDER
8N-3844
101-RD-4
BK-4
521-YL-14
200-BK-14
200-BK-14
200-BK-14
LA
LADDER
LAMP SW
4D-1836
JJ
CHG
102-BU-14
6
5
9
8
12
11
3
2
LAMP
5D-0019
893-GN
892-BR
892-BR
893-GN
D996-PU
D997-YL
D996-PU
D997-YL
413-BR
202-BK
SS
SS
TO
CAB
NEUTRAL
L73
Q B
LL
LA
B-701
LADDER
FLOOD
LAMP
3T-4411
LCD LATCH
TO
FRAME
406-PU
409-OR
OPR PANEL
200-BK-14
SERVICE
TOOL
CONNECTOR
SERVICE
SET SW
9D-3721
SERVICE
CLEAR SW
9D-3721
202-BK
103-YL
NEUTRAL/START
CONTROL
7X-1362
200-BK
200-BK
891-BU
J
H
G
F
E
D
C
B
A
ENGINE
CONTROL
FAULT LAMP
7N-5876
BASE
2G-0151
ENGINE
OVERSPEED
ALARM
9G-9813
ENGINE
OVERSPEED
LAMP
7N-5876
BASE
2G-0151
ENGINE
AIR FILTER
LAMP
7N-5876
BASE
2G-0151
308-YL
BU
820-BU
PU
BK
200-BK
200-BK
PYLD MNTR
105-BR
201-BK
L33
L33
201-BK
201-BK
201-BK-14
631-GY-14
632-WH-14
619-GN-14
611-PU-14
620-WH-14
620-WH-14
620-WH-14
L45
539-BU
614-PU
200-BK
200-BK-14
614-PU
614-PU
SIGNAL
+B
GROUND
9
8
7
6
5
4
3
2
1
00
2
4
3
5
200-BK-14
1
2
200-BK-14
7
6
A
B
C
THROTTLE
POSITION
SENSOR
3E-5400
ATMOSPHERIC
PRESSURE
SENSOR
6V-1926
GN-18
YL-18
OR-18
A
308-YL
A
307-OR
250-BK
819-GY
20A
GROUND
+V
SIGNAL
799-WH
9
FOG
LAMP
9X-7165
632-WH-14 632-WH-14
631-GY-14631-GY-14
631-GY-14
FOG LAMP SW
6T-3989
614-PU
614-PU
115-PK-14 103-YL
632-WH-14
631-GY-14
103-YL
23
LCD CLOCK
TX LCD OUT
+24V (OUT)
PU
4
2
38
12
15
3
1
601-GY
ENGINE FLOOD
LAMP SW
8D-2676
149-PU-14
T
SPEEDOMETER
3T-3408
PANEL
LAMP
7N-5876
203-BK
L20
D
607-PK-14
149-PU-14
149-PU-14
C
B
A
L
Q
200-BK-14
1
200-BK-14
619-GN-14
611-PU-14
L
622-PU-14
623-BU-14
200-BK-14
LOW BEAM
HEAD LAMP
9X-7165
HIGH BEAM
HEAD LAMP
9X-7166
619-GN-14
623-BU-14
622-PU-14
607-PK-14
539-BU
611-PU-14
540-WH
614-PU
607-PK-14
L45
JJ
521-YL-14
200-BK-14
611-PU-14
251-BK
7I-5124
Q
22
L19
446-PU-14
L38
J
R
A
A
201-BK
17
103-YL
201-BK
201-BK
201-BK
799-WH
A
201-BK
201-BK 201-BK
GROUND
16 201-BK
11
149-PU-14
M
M
M
200-BK
6 5
9
8
12
11
3
2
2
1
DIMMER
RESISTOR
3T-3437
3
2 1
32
3
21
TURN
SIGNAL SW
9G-5589
18
BASE
2G-0151
200-BK
202-BK
200-BK
200-BK
D992-PU
D991-OR
202-BK
123-WH
L32
449-BU
601-GY
202-BK
D989-BU
BASE
2G-0151
A
26
29
35
11
25
2
601-GY
799-WH
202-BK
33
M
34
23
200-BK-14
522-WH-14
521-YL-14
124-GN-14
2
4
3
1
RETARDER
LAMP
7N-5876
ACTION
LAMP
7N-5876
201-BK
415-GN
411-PK
RIGHT
TURN
LAMP
7N-5876
601-GY
HIGH BEAM
INDICATOR
LAMP
7N-9967
200-BK
200-BK
200-BK
200-BK
LEFT
TURN
LAMP
7N-5876
BASE
2G-0151
540-WH
539-BU
IGN
SEND
GRD
T
PANEL
LAMP
7N-5876
BASE
2G-0151
202-BK
D988-WH
RETARDER LIGHT SW
4D-4785
ARC CONTROL
VALVE
3E-8691
AUTO RETARD PRESS SW
9W-0263
410-WH
201-BK
123-WH
446-PU-14
540-WH
539-BU
611-PU-14
201-BK
415-GN
411-PK
441-OR
A
A
201-BK18
GROUND
LADDER
LAMP SW
6T-3991
DOME
LAMP SW
6T-3990
PANEL
DIMMER SW
6T-3991
RUNNING
LAMP SW
6T-3989
607-PK-14
210-BK
135-BU
602-WH
200-BK
103-YL
200-BK
622-PU-14
623-BU-14
601-GY
601-GY
614-PU
619-GN-14
610-OR-14
103-YL
115-PK-14
102-BU-14
103-YL
600-BR
601-GY
614-PU
102-BU-14
601-GY
2A-7119
M
M
M
PANEL
LAMP
7N-5876
202-BK
8
124-GN-14
522-WH-14
200-BK-14
521-YL-14
200-BK-14
124-GN-14
601-GY
522-WH-14
540-WH
539-BU
605-YL
606-GY
604-OR
537-GN
2
3
6
5
4
1
1 4
5
6
2
3
441-OR
201-BK
HEAD LAMP
DIMMER SW
2H-1855
149-PU-14
623-BU-14
622-PU-14
607-PK-14
203-BK
619-GN-14
614-PU
610-OR-14
611-PU-14
611-PU-14
OPERATOR STATION
515-GY-14
CAT DATA LINK -
CAT DATA LINK +
START/BKUP RETURN
SERVICE CLEAR
SERVICE SET
START SWITCH
NEUTRAL (TPMC)
NEUTRAL (EMS)
BACKUP ALARM RELAY
START RELAY
HOLD
ID CODE 4
SPARE
BODY UP SW
PART THROTTLE
ID CODE 1
2
8
27
28
7
6
20
1
9
21
22
23
24
25
26
3
4
5
37
LADDER
FLOOD
LAMP
3T-4411
B
N
J
FAULT
ALARM
9G-9813
2
1
BK
RD
201-BK
410-WH
997-OR
997-OR
993-BR
200-BK-14
17
454-GN
18
19
10
36
30
31
32
33
34
35
123-WH
123-WH
412-BU
306-GN
403-GN
138-GN
138-GN
138-GN
614-PU
311-WH
29
11
12
113-OR
13
YL
OR
BK
WH
PK
PU
RD
BR
GN
BU
14
J
202-BK
202-BK
202-BK
202-BK
15
XX
2
1 539-BU
614-PU
L27
200-BK-14
521-YL-14
124-GN-14
522-WH-14
RS
3
4
1
2
5
RESISTOR
9G-1950
200-BK-14
522-WH-14
BASE
2G-0151
2
1
T
R
R
2
2
1
1
5
4
3
2
1
BLOWER SW
6P-3236
THERMO SW
3E-5465
517-BU-14
516-GN-14
515-GY-14
521-YL-14
124-GN-14
BLOWER
9G-8693
BLOWER
9G-8697
BK-14
BK-14
WH/RD-14
WH/RD-14
MOTOR
MOTOR
515-GY-14
200-BK-14522-WH-14
200-BK-14
515-GY-14
521-YL-14
124-GN-14
515-GY-14
200-BK-14
202-BK
419-YL
202-BK
202-BK
12V AUX
POWER
A-8018C-9677
FOG
LAMP
9X-7165
200-BK-14
201-BK
A
113-OR
113-OR
TRACTION
AID
CONTROL
3T-0529
201-BK
201-BK
201-BK
200-BK
601-GY
200-BK
200-BK
601-GY
TORQUE CONVERTER
INLET FILTER SW
7N-4447
105-BR
105-BR
105-BR105-BR
200-BK
403-GN
403-GN
327-PK-14
470-PU-18
ZZ
STRAP AS. 8X-6418
16
539-BU
L76
614-PU614-PU
539-BU
454-GN
BR
B
LOW BEAM
HEAD LAMP
9X-7165
HIGH BEAM
HEAD LAMP
9X-7166
PARK/TURN
LAMP
3T-3967
PARK/TURN
LAMP
3T-3967
2 2
1 1
BRBR
RD RD
A714-BU
X
NN
539-BU
614-PU
L11
L12
GG
J
2
1
DISCONNECT SW
7N-0718
202-BK
CCAA
3
THIS SCHEMATIC IS FOR THE 789B TRUCK (3E-8713 CHG 00)
L26
A
BR
SS
SS
L10
306-GN
126-PK
818-BR
ETHER AID
RELAY
3E-5239
L6
L6
L2
L2
L2
L3
L5
A713-GN
310-PU
311-WH
310-PU
317-YL
317-YL
112-PU-10
112-PU-10
450-YL
112-PU-10
L9
317-YL-12
317-YL-12
310-PU
ETHER
SOLENOID 2
9X-7137
ETHER
SOLENOID 1
9X-7137
L9
L9
A
TO
BLOCK
LL
LL
200-BK-2
B
B
BK
BU
BK
BU
200-BK-12
200-BK
200-BK
315-GN-12
B926-GY
C
B
ZZ
ZZ
522-WH-14
311-WH
B926-GY
310-PU
B
RD
RD
317-YL
513-OR-14
RESISTOR
9X-9584
310-PU
317-YL
87A
87
30
86
85
317-YL
317-YL
RD
RD
B
L64
00
A
A-2047E-5342YY
8X-0596
L64
310-PU
L8
ENGINE
CONTROL
9X-9971
619-GN-14
200-BK-14
L1
RECEPT AS. (16)
9X-0352
A
A
200-BK-14
200-BK-14
OPERATOR STATION
RH ENGINE
FLOOD
LAMP
6N-7989
LH ENGINE
FLOOD
LAMP
6N-7989
12V BATTERY
3T-5760
12V BATTERY
3T-5760
620-WH-14
RESISTOR
9X-9584
BK-4
101-RD-4
BK-4
BK-4
00MM 7G-1060
8
200-BK-14
C
200-BK-14
202-BK
BB
200-BK-14
FOG
LAMP
9X-7165
203-BK
NEG POSNEG POS
- +
BED
RAISE
SW
9D-4734
200-BK
200-BK
200-BK
HH
202-BK
202-BK
202-BK
202-BK
202-BK
202-BK
MM
CCC
CCC
2
4
3
1
BK
AAA DDD
NOTE: FOR USE ON
MACHINES WITHOUT
A/C.
2
1
Q
3
1
4
2
200-BK-14
L4
200-BK-14
102-BU-14
200-BK-14
102-BU-14
3
4
2
1
632-WH-14
200-BK-14
632-WH-14
200-BK-14
L86
L4
L4
Y B-1/E-1007I-5382
04
02 B-68W-3843RR
B-68W-3844SS
ATCH
NOTE D: TAPE BACK CIRCUIT 200-BK-14
Q
Y
Y
200-BK-14
L4
L4
L5
200-BK-14
1
2
1
3
4
200-BK-14
631-GY-14
200-BK-14
631-GY-14
102-BU-14
102-BU-14
Q
Y
200-BK-14
NOTE D
620-WH-14
620-WH-14
200-BK-14
NOTE D
B
L86
L86
L86