776D/777D ELECTRICAL SCHEMATIC

©
1996 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR6910
May 1996
776D Tractor And 777D Truck
Electrical System
776D:
5ER1-UP
777D:
3PR1-UP
Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 B-15 43
CONN 2 B-15 1
CONN 3 D-15 D
CONN 4 D-15 D
CONN 5 E-14 D
CONN 6 B-14 11
CONN 7 A-14 44
CONN 8 A-13 45
CONN 9 B-13 D
CONN 10 F-13 D
CONN 11 D-12 D
CONN 12 D-12 D
CONN 13 D-12 D
CONN 14 B-12 D
CONN 15 B-11 D
CONN 16 B-11 D
CONN 17 ECAP E-12 C
CONN 18 E-10 E
CONN 19 D-10 D
CONN 20 B-10 D
CONN 21 B-10 D
CONN 22 B-9 D
CONN 23 D-9 D
CONN 24 F-9 D
CONN 25 D-8 C
CONN 26
B-8
D
CONN 27 B-6 29
CONN 28 B-6 35
CONN 29 B-6 5
CONN 30 C-5 D
CONN 31 E-6 D
CONN 32 B-5 E
CONN 33 B-4 35
CONN 34 D-4 E
CONN 35 F-4 E
CONN 36 A-3 2
CONN 37 B-2 7
CONN 38 C-2 35
CONN 39 C-2 35
CONN 40 C-2 35
CONN 41 C-2 35
CONN 42 C-2 35
CONN 43 C-1 35
CONN 44 C-1 35
CONN 45 C-1 35
CONN 46 F-2 E
¹ 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.
Title Form No.
Alternator: 30-SI Series
SENR7508
Automatic Electronic Traction Aid (TCS)
SENR2986
Automatic Retarder Control
SENR5683
Caterpillar Monitoring System
SENR6717
Electronic Troubleshooting
3508B EUI Engine
SENR1128
EPTCII For ICM Transmission
SENR9122
Payload Monitoring System SENR4733
Starter Motor; 50 MT Series SENR3860
Related Service Manuals
TRUCK PAYLOAD MEASUREMENT SYSTEM (TPMS)
Fault Circuit Description
F01 Suspension cylinder charge
F02 Suspension cylinder charge
F03 Suspension cylinder charge
F04 Suspension cylinder charge
F05 Left front suspension cylinder pressure sensor circuit
F06 Right front suspension cylinder pressure sensor circuit
F07 Left rear suspension cylinder pressure sensor circuit
F08 Right rear suspension cylinder pressure sensor circuit
F09 Batt backup/real time clock setting
F10 System_setting/memory
F13 Green light open circuit or ground short circuit
F14 Green light + battery short circuit
F15 Red light open circuit or ground short circuit
F16 Red light + battery short circuit
Component Description Part No. Resistance (Ohms)¹
Resistor- Blower Motor 125-9740 Overall 2.6 ± 0.12
Solenoid- ARC Control Valve
ARC Su
pp
l
y
Valv
e
3E-8691 31 ± 3
Solenoid- Brake Oil Diverte
r
Smoke Bo
x
101-3430 31.1 ± 2.4
Solenoid- Downshif
t
Upshift
Locku
p
7X-1120 33.7
Solenoid- Fan Clutch 105-3025 4.3
Solenoid- Four Way 9G-9988 24.9
Solenoid- Proportional 3T-0062 16.0
Solenoid- Shutter 9X-9482 68
¹ At room temperature
Resistor, Sender and Solenoid Specifications
Mode of Operation Mode Number
Normal 0
Harness Code 1
Numeric Readout 2
Service 3
Tattletale 4
Units 5
Total Load Count Display 6
Calibration (EPTC II) 7
Monitoring System Modes
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Backup A-15
1
Sensor - Body Up B-15
11
Alarm - Monitor Action C-4
A
Sensor - Brake Air Pressure C-15
D
Alternator A-5
2
Sensor - Brake Oil Temp A10
12
Batteries A-7,A-8
3
Sensor - Crankcase Press C-3
13
Boss - Power C-6
D
Sensor - Engine Coolant Temp C-2
14
Breaker - Air Conditioner D-6
C
Sensor - Engine Oil Press (Filtered) C-3
15
Breaker - Alternator C-6
C
Sensor - Engine Oil Press (Unfiltered) C-3
15
Breaker - Dome And Stop Lamp C-6
C
Sensor - Engine Speed/ Timing C-2
16
Breaker - Engine (ECM) D-5
C
Sensor - Fan Speed A-4
31
Breaker - Headlamp D-5
C
Sensor - Left Front Strut B-5
17
Breaker - Key D-6
C
Sensor - Left Hand Turbo Inlet Exhaust Temp C-3
18
Breaker - Supplemental Steer D-6
C
Sensor - Left Rear Strut B-14
19
Breaker - Turn Lamp D-5
C
Sensor - Left Turbo Inlet Press C-4
16
Caterpillar Monitoring System F-1
B
Sensor - Right Front Strut A-5
20
Control - ARC D-13
D
Sensor - Right Hand Turbo Inlet Exhaust Temp C-4
21
Control - Automatic Electronic Traction Aid (TCS) E-15
D
Sensor - Right Rear Strut A-14
22
Control - Engine (ECM) A-2
2
Sensor - Right Turbo Inlet Press C-4
23
Control - Oil Burn C-14
D
Sensor - Shift Lever Position D-11
F
Control - Payload Monitor C-14
D
Sensor - Throttle Position C-6
A
Control - Supplemental Steering F-15
D
Sensor - Torque Converter Temp A-4
24
Control - Transmission D-13
D
Sensor - Turbo Outlet Press C-3
25
Converter - 12V to 24V C-4
A
Sensor - Wheel Speed A-15
26
Dimmer - Light F-14
D
Sensor - Wheel Speed B-15
27
Display - Payload Monitor Operator C-7
A
Solenoid - Air Conditioner Clutch A-5
28
Distributor - Transmission Speed E-15
D
Solenoid - Brake Oil Diverter A-12
24
Flasher C-15
D
Solenoid - Continuous Oil Burn Injector B-6
29
Fuse - Supplemental Steering (10 Amp) A-8
3
Solenoid - Down Shift A-13
30
Fuses (10 Amp) D-6
C
Solenoid - Fan Clutch C-2
31
Ground - Cab D-14,E-12
D
Solenoid - Four Way A-14
11
Ground - Caterpillar Monitoring System E-2
B
Solenoid - Lockup A-13
8
Ground - Cylinder Head To Frame B-2
4
Solenoid - Proportional A-14
32
Ground - Engine A-4
2
Solenoid - Shutter C-2
33
Ground - Engine Block A-6
5
Solenoid - Smoke Box B-12
16
Ground - Frame A-6
5
solenoid - Start Aid A-5
34
Ground - Frame B-9
2
Solenoid - Up Shift A-14
30
Lamp - Body Up F-2
B
Solenoids - Cylinder Head (1 Per Cylinder) C-1,C-2
35
Lamp - High Beam F-2
B
Speedometer/ Tachometer F-1
B
Lamp - Left Turn F-2
B
Suppressor - Arc B-5
28
lamp - Monitor Action F-2
B
Suppressor - Arc F-15
D
Lamp - Payload Monitor Green A-5
6
Switch - A/C Fan Pressure B-2
28
Lamp - Payload Monitor Green D-1 A Switch - A/C Refrigerant Press B-7 B
Lamp - Payload Monitor Red A-5 6 Switch - Air Conditioner On/Off D-2 B
Lamp - Payload Monitor Red D-1 A Switch - Auto Retard Press D-12 D
Lamp - Retardeeer F-2 B Switch - Auto Retarder Off/On D-3 B
Lamp - Reverse F-2 B Switch - Blowre D-2 A
Lamp - Right Turn F-2 B Switch - Body Raise C-11 D
Lamp - Shift Lever Position D-11
F
Switch - Brake Master Cylinder Overstroke A-10 36
Lamp - Supplemental Steer F-2
B
Switch - Brake Oil Diverter Temp A-12 24
Lighter - Cigar C-3
B
Switch - Caterpiller Mon Sys Clear E-5 C
Module - Gauge F-1
B
Switch - Caterpillar Mon Sys Service E-5 C
Motor - Blower E-10
E
Switch - Coolant Flow B-2 37
Motor - Starter A-6
5
Switch - Disconnect A-7 3
Motor - Supplemental Steering A-8
3
Switch - Door Courtesy Lamp C-5 A
Radio D-3
A
Switch - Engine Add Oil Level A-4 38
Receptacle - Aux Start A-6
7
Switch - Engine Low Oil Level A-4 38
relay - Backup C-15
D
Switch - Exhaust Diverter E-5 C
Relay - Headlamp C-7
C
Switch - Fuel Filter A-2 28
Relay - Main Power (Front) D-6
C
Switch - Ground Level Shutdown B-3 39
Relay - Main Power (Mid) C-6
C
Switch - Headlamp Dimmer D-5 A
Relay - Main Power (Rear) C-6
C
Switch - Key Start F-3 B
Relay - Prelubrication C-6
C
Switch - Retarder Brake F-15 E
Relay - Shutter Control C-14
D
Switch - Running Lamp E-3 B
Relay - Start A-6
5
Switch - Secondary Brake F-1 D
Relay - Start B-6
5
Switch - Service Brake E-15 D
Relay - Start Aid B-15
D
Switch - Service Brake E-15 D
Relay - Start Aid Hold C-51
D
Switch - Start Aid E-15 B
Relay - Steering Motor A-8
3
switch Steering A-8 40
Relay - Stop Lamp D-7
C
Switch - Stop Lamp F-15 D
Resistor - Blower Motor D-10
E
Switch Supplemental steering F-3 B
Resistor - Exhaust Diverter B-14
D
Switch Throttle Backup D-2 B
Resistor - Oil Burn B-14
D
Switch - Tractioon Aid Test/ Operator Mode D-3 B
Resistor - Start Aid B-15
D
switch - Trailer stop Lamp F-15 D
Sender - Engine Speed A-5
8
Switch - Transmission A-13 41
Sender - Fuel Level A-11
9
Switch - Transmission Filter A-9 42
Sender - Torque Converter output Speed A-12
8
Switch - Turn D-5 A
Sender - Transmission Speed A-13
10
Thermostat E-11 E
Sensor - Aftercooler Temp C-3
8
Valve - ARC Control E-12 D
Sensor - Atmospheric Press C-3
2
Valve - ARC Supply E-12 D
Machine locations are repeated for components located close together.
A = Located in operator's compartment.
B = Located on dash.
C = Located behind operator's seat.
D = Located in rear compartment.
E = Located in front compartment.
F = Located in transmission shift console.
Component Locatio
n
Wi
r
e
Number
Wi
r
e
Color
Description
Wi
r
e
Number
r
Color
Description
101 RD BAT
(
+
)
711 BR XMSN LEVER CODE 1
102 BU HD LMP 712 WH XMSN LEVER CODE 2
103 YL
A
UX CKT 713 OR XMSN LEVER CODE 3
105 BR KEY SW 714 YL XMSN LEVER CODE 4
109 OR
A
LT OUTPUT
(
+
)
TERM. 715 GN XMSN LEVER CODE 5
112 PU MAIN POWER RL Y OUTPUT 716 BU XMSN LEVER CODE 6
113 OR OPR MON PANE
L
720 PU XMSN BRAKE SW
121 YL BCKP ALARM 721 BR XMSN GEAR CODE 1
122 BU
A
UX CKT 722 WH XMSN GEAR CODE 2
123 WH
A
UX CKT 723 OR XMSN GEAR CODE 3
124 GN
A
/C 724 YL XMSN GEAR CODE 4
126 PK XMSN CTRL 725 GN XMSN GEAR CODE 5
129 BU
A
UX CKT 726 BU XMSN GEAR CODE 6
132 P
K
A
ETA CTRL 727 GN SUPPL STER MOTOR RELAY
135 BU
A
UX CKT 728 BU SUPPL STER CONT SW
136 GN SUPPL STER 767 WH
A
ETA PICKUP POWER
137 OR SUPPL STER MOTOR FUSE 768 OR
A
ETA PICKUP XMSN
138 GN
A
UTO LUBE PUMP TO PAYLOAD MON 769 BU WHEEL SPEED PICKUP LEFT
140 BU
A
UX CKT 770 GN WHEEL SPEED PICKUP RIGHT
141 P
K
A
UX CKT 772 BR
A
ETA RETARDER SW
150 OR BAT
(
+
)
773
GY
A
ETA SERVOVALV
E
173 YL
A
UX CKT 774 YL
A
ETA SOL - LEFT
176 OR
A
UX CKT 775 BR
A
ETA SOL - RIGHT
794 YL PAYLOAD MON XMSN SPEED
200 BK MAIN CHASSIS 799 WH SENSOR POWER
201 BK OPR MON PANE
L
A
700 OR DIGITAL SENSOR POWER
(
+8V
)
202 BK XMSN CTRL
A
701 GY INJECTOR #1
213 BK
A
ETA CODING PIN 17
A
702 PU INJECTOR #2
215 BK
A
ETA CODING PIN 19
A
703 BR INJECTOR #3
216 BK
A
ETA CODING PIN 20
A
704 GN INJECTOR #4
217 BK XMSN ID CODE 2
A
705 BU INJECTOR #5
218 BK XMSN ID CODE 1
A
706 GY INJECTOR #6
219 BK XMSN ID CODE 0
A
707 PU INJECTOR #7
227 BK XMSN ID CODE 3
A
708 BR INJECTOR #8
229 BK BAT
(
-
)
A
746 P
K
TURBO OUTLET PRESSUR
E
231 BK XMSN SW
A
747 GY
A
TMOSPHERIC PRESSURE
250 BK PAYLOAD MON - CUSTOMER GND
A
751 YL
A
FTER COOLER TEMP
)
251 BK PAYLOAD MON - SYSTEM GND E707 GN DISPLAY +
V
280 BK XMSN CTRL IDENT CODE 4 E708 P
K
DISPLAY CLOCK
290 BK CMS SERVICE E729 GN FAN BRAKE RL Y TO FAN BRAKE SOL
291 BK CMS CLEAR E735 PU TACK/SERV MTR/ODOMETER SELECT
A
215 BK
A
UTO RETARD CTRL HARNESS CODE 0 E750 PU BODY POSITION SENSOR SIGNAL TLM
A
216 BK
A
UTO RETARD CTRL HARNESS CODE 1 E793 BU
A
TA DATA LiNK-
A
217 BK
A
UTO RETARD CTRL HARNESS CODE 2 E794 YL
A
TA DATA liNK +
A
218 BK
A
UTO RETARD CTRL HARNESS CODE 3 E795 YL CRANKCASE PRESS
A
231 BK
A
UTO RETARD CTRL HARNESS CODE 4 E796 GN OIL PRESS
(
UNFILTERED
)
E799 BR PWM #1 AND #2 RETURN
306 GN STARTER RLY COIL F700 BU PWM#1 OUT
(
3.5A
)
307 OR KEY SW TO NEUT START SW F702 GN THROTTL
E
308 YL MAIN POWER RL Y COIL F703 GY LH TURBINE INLET EXH TEM
P
315 GN START AID BRKR TO START AID RLY F704 OR RH TURBINE INLET EXH TEM
P
317 YL START AID RL Y TO START AID SOL F705 P
K
DOUT 6
321 BR BCKP ALARM LAMP F707 WH START AID CURRENT LEVEL RLY
337 WH PRELUBE SW TO PRELUBE TIMER F708 YL DOUT 3
F709 BU DOUT 2
403 GN
A
LTERNATOR
(
R
)
TERM. F710 BR START AID ON RELAY
408 WH OPR MON SYSTEM AIR PRESS. F713 OR LEFT TURBO INLET PRESS
410 WH OPR MON ACTION ALARM F714 P
K
RIGHT TURBO INLET PRESS
411 P
K
OPR MON MASTER ACTION LAMP F715 PU SHUTDOWN
(
NO
)
412 BU OPR MON COOL FLOW F716 WH SHUTDOWN
(
NC
)
417 GY PRIMARY STER SW F717 YL SW4
426 BR OPR MON POWER TRAIN OIL FILTER F718 BU SW5
446 PU BRAKE OIL TEMP GAUGE F719 BR SW 6/1
447 P
K
FUEL LEVEL GUAGE F720 GN SW 8/3
450 YL TACH SENDER
(
+
)
F721 GY SW 9/4
452 PU TORQUECONVERTE
R
F722 OR SW 10/5
454 GN RETARDER INDICATOR LAMP F723 P
K
TBC PROBE +
462 YL SUPPL STER MOTOR INDICATOR F724 PU TDC PROBE-
472 OR PARKING BRAKE SW TO OVER STROKE SW F725 WH FUEL PRESS
481 GN CONVERTER TEMP SW TO BRAKE OIL TEMP S
W
F726 YL INJECTOR COMMON 1 & 3
C413 YL DISPLAY DATA F727 BU INJECTOR COMMON 2 & 4
C414 BU DISPLAY LOAD F728 BR INJECTOR COMMON 5 & 7
F729 GN INJECTOR COMMON 6 & 8
508 PU RADIO SPEAKER - LEFT F732 P
K
BACKUP CAMSHAFT SPD/TMG
509 WH RADIO SPEAKER - LEFT
(
COMMON
)
818 BR SERIAL DATA
(
TRANSMIT
)
511 BR RADIO SPEAKER - RIGHT 819 GY SERIAL DATA
(
RECEIVE
)
512 GN RADIO SPEAKER - RIGHT
(
COMMON
)
820 BU TRANSMIT KEY
513 OR
A
/C COMPRESSOR/REFRIGERANT PRESS. SW 858 GY PAYLOAD MON RIGHT FRONT SENSOR
515 GY BLOWER MOTOR
(
HI
)
859 YL PAYLOAD MON LEFT FRONT SENSOR
516 GN BLOWER MOTOR
(
MEDIUM
)
860 P
K
PAYLOAD MON RIGHT REAR SENSOR
517 BU BLOWER MOTOR
(
LO
)
861 PU PAYLOAD MON LEFT REAR SENSOR
518 OR HAZARD FLASHER TO SW 863 BU PAYLOAD MON TRANSMIT LCD OUT
520 WH OPR A/C SW TO THERMOSTAT/FUSE 864 BR PAYLOAD MON CLOCK LCD OUT
521 YL
A
/C SWTO REFRIGERANT SW 865 GY PAYLOAD MON LATCH LCD OUT
522 WH
A
/C CLUTCH TO THERMOSTAT SW 866 P
K
PAYLOAD MON TEST/SE
T
537 GN TURN SIGNAL SW TO FLASHER 867 PU PAYLOAD MON MODE
539 BU TURN SIGNAL INDICATOR BASIC/RIGHT 891 BU NEUT START CONT TO PAYLOAD MON SYSTEM
540 WH TURN SIGNAL INDICATOR LEFT F728 BR INJECTOR COMMON 5 & 7
A
513 P
K
DC/DC CONVERTER MEMORY OUTPUT F729 GN INJECTOR COMMON 6 & 8
511 BR RADIO SPEAKER - RIGHT F732 P
K
BACKUP CAMSHAFT SPD/TMG
512 GN RADIO SPEAKER - RIGHT
(
COMMON
)
818 BR SERIAL DATA
(
TRANSMIT
)
513 OR
A
/C COMPRESSOR/REFRIGERANT PRESS. SW 819 GY SERIAL DATA
(
RECEIVE
)
515 GY BLOWER MOTOR
(
HI
)
820 BU TRANSMIT KEY
516 GN BLOWER MOTOR
(
MEDIUM
)
858 GY PAYLOAD MON RIGHT FRONT SENSOR
517 BU BLOWER MOTOR
(
LO
)
859 YL PAYLOAD MON LEFT FRONT SENSOR
518 OR HAZARD FLASHER TO SW 860 P
K
PAYLOAD MON RIGHT REAR SENSOR
520 WH OPRA/C SW TO THERMOSTAT/FUSE 861 PU PAYLOAD MON LEFT REAR SENSOR
521 YL
A
/C SWTO REFRIGERANT SW 863 BU PAYLOAD MON TRANSMIT LCD OUT
522 WH
A
/C CLUTCH TO THERMOSTAT SW 864 BR PAYLOAD MON CLOCK LCD OUT
537 GN TURN SIGNAL SW TO FLASHER 865 GY PAYLOAD MON LATCH LCD OUT
539 BU TURN SIGNAL INDICATOR BASIC/RIGHT 866 P
K
PAYLOAD MON TEST/SE
T
540 WH TURN SIGNAL INDICATOR LEFT 867 PU PAYLOAD MON MODE
A
513 P
K
DC/DC CONVERTER MEMORY OUTPUT 891 BU NEUT START CONT TO PAYLOAD MON SYSTEM
892 BR CAT DATA LINK
(
-
)
602 WH DOMELAMP 893 GN CAT DATA LINK
(
+
)
604 OR STOP LAMP 956 BR RELAY LOGIC LARGE PUMP
605 YL TURN LAMP - LEFT 958 YL RELAY LOGIC
606 GY TURN LAMP - RIGHT 987 WH DIVERTER SOL
608 GN FLOOD LAMP - REAR 993 BR
A
NALOG SENSOR COMMON
610 OR HEAD LAMP BASIC 994 GY OIL PRESSURE
(
FILTERED
)
611 PU HEAD LAMP HI 995 BU COOLANT TEMPERATURE
612 GY BACKUP LAMP 996 GN ENGINE SPEED/TIMING SENSOR POWER
614 PU PARK/TAIL/DASH LAMP 997 OR
A
NALOG SENSOR POWER
(
+ 5V
)
619 GN HEAD LAMP LO 998 BR DIGITAL SENSOR RETURN
(
PIN 29
)
635 BU PAYLOAD MON RED LAMP 999 WH PRIMARY CAMSHFT SPEED/TIMING
636 GN PAYLOAD MON GREEN LAMP E986 YL CONTINUOUS OIL INJECTOR SOLENOID
661 GN TACHOMETER LAMP F975 OR + 8V SENSOR SUPPL
Y
662 YL SPEEDOMETER LAMP J992 YL MISCELLANEOUS SWITCH #1
663 GY GAUGE LAMPS K972 BR EPTC-II START RELAY RETURN
K984 GY START AID TIMER OUTPUT
700 P
K
A
ETA TEST SW K985 BR
A
UTO RETARD ON SW
703 BU XMSN UP SO
L
K986 P
K
A
UTO RETARD OFF SW
704 GY XMSN DOWN SOL K986 P
K
A
UTO RETARD OFF SW
705 P
K
XMSN LOCKUP CLUTCH SOL BASIC K988 WH
A
UTO RETARD AIR CONT VALVE
706 BR XMSN RETARDER SW K989 BU
A
UTO RETARD AIR SUPPLY VALV
E
707 PU XMSN BED RAISE SW K991 OR
A
UTO RETARD PRESS SW
709 OR SENSOR POWER SUPPLY K992 PU
A
UTO RETARD MANUAL RETARD SW
710 GN XMSN SPEED PICKUP SIGNA
L
L918 GN BRAKE OIL DIVERTER TEMP SW TO SOLENOID
Ground Circuit
s
Power Distribution Circuit
s
Control Circuit
s
Wire Description Chart
Control Circuit
s
Li
g
htin
g
Circuit
s
Accessor
y
Circuit
s
Monitorin
g
Circuit
s
Basic Machine Circuit
s
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
2M-9346
Stop Lamp Pressure
Trailer Sto
p
Lam
p
Pressure
45kPa MA
X
(
6.5
p
si MAX
)
5 kPa MIN
(
0.5
p
si MIN
)
Normall
y
O
p
en
3E-2033 Secondary Brake Pressure
640 kPa
(
92.0
p
si
)
530 ± 40 kPa
(
77.0 ± 6.0
p
si
)
Normall
y
O
p
en
3E-2034 Service Brake Pressure
80 kPa
(
12.0
p
si
)
55 ± 20 kPa
(
8.0 ± 3.0
p
si
)
Normall
y
Closed
3E-6429 Steering Oil Flow
4 grams
(
.14 oz.
)
1.5 grams
(
.05 oz.
)
Normall
y
O
p
en
3E-6430 Coolant Flow
362.0 ± 29.0 N
.
m
(
266.2 ± 21.3 lb ft
)
303.0 N
.
m MIN
(
222.8 lb ft MIN
)
Normally
O
p
en
3E-6449 Brake Oil Diverter Temperature
38.0 ± 3.0 °C
(
100.4 ± 5.4 °F
)
27 °C MIN
(
80.6 °F MIN
)
Normall
y
Closed
9X-7781 Transmission Filter Pressure
210 ± 70 kPa
(
30 ± 10
p
si
)
_
--
Normall
y
O
p
en
103-4977 Retarder Brake Pressure
60.0 kPa
(
8.7
p
si
)
_
--
Normally
O
p
en
111-9560
A/C Fan Pressure
1585.0 ± 103.0 kPa
(
229.9 ± 14.9
p
si
)
1275.0 ± 103.0 kPa
(
184.9 ± 14.9
p
si
)
Normally
Closed
111-9563 Auto Retarder Pressure
80.0 kPa MAX
(11.6 psi MAX)
55.0 ± 20.0 kPa
(8.0 ± 2.9 psi)
Normally
Closed
114-5333 A/C High/Low Pressure
275 to 1750 kPa ¹
(40 to 255 psi)
_
--
Normally
Open ²
116-9933 Fuel Filter Press
138 ± 17 kPa
(20.0 ± 2.0 psi)
83 kPa MIN
\
(12.0 psi MIN)
Normall
y
Closed
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.
MODULE IDENTIFIER (MID)
27 EPTC II
30 Caterpillar Monitoring System
36 Engine Control ECM
83 Automatic Retarder Control
COMPONENT IDENTIFIER (CID) LIST
CIDNo. Component
EPTC II
(
MID No. 27
)
168 Electrical System Voltage
190 Engine RPM Sensor
248 CAT Data Link
269 Sensor Power Supply
571 Forward Elevator Solenoid
572 Reverse Elevator Solenoid
575 Elevator Lever Sensor
627 Parking Brake Switch
650 Harness Code
672 Torque Converter Output Speed Sensor
700 Actual Gear Switch
701 Transmission Output Speed Sensor
702 Shift Lever Switch
704 Service Brake Pressure Switch
705 Body Raise Switch
706 Body Up Switch
707 Up Solenoid
708 Down Solenoid
709 Lockup Solenoid
Caterpillar Monitoring System (Mid No. 30
)
96 Fuel Level Sensor
110 Engine Coolant Temperature Sensor
177 Tor
q
ue Converter Oil Tem
p
erature Sensor
248 CAT Data Link
263 8 Volt Sensor Power Supply
271 Action Alarm
324 Action Lamp
600 Hydraulic Oil Temperature Sensor
601 Brake Air Pressure
819 Display Data Link
821 9 Volt Display Power Supply
830 Brake Oil Temperature
Engine Control (MID No. 36
)
1 Cylinder 1 Injector Solenoid
2 Cylinder 2 Injector Solenoid
3 Cylinder 3 Injector Solenoid
4 Cylinder 4 Injector Solenoid
5 Cylinder 5 Injector Solenoid
6 Cylinder 6 Injector Solenoid
7 Cylinder 7 Injector Solenoid
8 Cylinder 8 Injector Solenoid
91 Throttle Position Sensor
100 Engine Oil Pressure Sensor
101 Crankcase Air Pressure Sensor
102 Boost Pressure Sensor
110 Engine Coolant Temperature Sensor
168 Electrical System Voltage
190 Engine RPM Sensor
248 CAT Data Link
253 Personality Module Mismatch
254 Electronic Control Module
261 Timing Calibration
262 Analog Sensor Power Supply
263 8 Volt Sensor Power Supply
267 Shutdown Inputs Are Incorrect
268 Programmed Parameter Fault
273 Turbo Outlet Pressure
274 Atmospheric Pressure
275 Right Turbo Inlet Pressure
276 Left Turbo Inlet Pressure
291 Engine Cooling Fan Solenoid
338 Engine Prelubrication Pump Relay
526 Turbo Waste Actuator
542 Engine Oil Pressure Sensor
544 Engine Cooling Fan Speed Sensor
545 Start Aid Control Relay
546 Start Aid Current Limit Relay
569 Oil Injection Solenoid
827 Left Exhaust Temperature Sensor
828 Right Exhaust Temperature Sensor
829 Rear Aftercooler Coolant Temperature Sensor
Automatic Retarder Control (MID No. 83
)
91 Throttle Position Sensor
168 Electrical System Voltage
190 Engine RPM Sensor
248 CAT Data Link
627 Parking Brake Switch
650 Harness Code
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
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.
14 Parameter failures.
15 Parameter failures.
16 Parameter not available.
17 Module not responding.
18 Sensor supply fault.
19 Condition not met.
20 Parameter failures.
¹The FMI is a diagnostic code that indicates what type of failure has occurred.
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
D
E
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
F
39
40
41
42
43
44
45
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
34
36
38
7
F
39
40
41
42
43
44
45
Machine Harness Connector and Component Locations
D61230
35
30
29
28
00
00
00
ATCH
ATCH
ATCH
A-6
A-6
A-6
134-4411
134-4410
2G-4177
AQ
AP
AN
ATCHB-601130-6614AM
A-15/B-1500
AL
AL
AL
AL
AL
AL
E
E
200-BK
200-BK
200-BK-14
1
2
3
4
5
6
6
5
4
3
2
1
614-PU
200-BK
605-YL
604-OR
200-BK
614-PU
614-PU
200-BK
604-OR
605-YL
LH TURN/
TAIL LAMP
130-3453
BK-18
RD-18
WH-18
B
C
A
T
S
S
T
A
C
B
WH-18
RD-18
BK-18
RH TURN/
TAIL LAMP
130-3453
S
T
F708-YL
998-BR
E729-GN
315-GN-12
315-GN
A
A
87a
87
30
86
85
SHUTTER
CONTROL
RELAY
3E-5239
998-BR
F708-YL
E729-GN
998-BR
998-BR
PRELUBE
MOTOR
117-3915
AN
AN
AQ
AP
AQ
AP
AM
AM
AM
200-BK
337-WH
BK-00
RD-00
RD-00
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
GN
GN
L45
L24
L25
F975-OR
522-WH-14
2
2
1
F713-OR-18
200-BK-18
229-BK-14
L12
L12
F975-OR-18
F721-GY-18
F720-GN-18
F717-YL-18
F710-BR-18
F709-BU-18
F708-YL-18
F707-WH-18
F705-PK-18
F702-GN-18
E986-YL-18
E794-YL-18
E793-BU-18
A700-OR-18
998-BR-18
893-GN-18
892-BR-18
B-601123-6991PP
PP PP
200-BK-18
E986-YL-18
2
1
2
35
25
4
11
39
38
32
30
29
24
21
19
16
17
13
37
40
14
12
28
23
200-BK
E750-PU
200-BK
EXHAUST DIVERTER SW
AUTO/MUFFLER
6T-3991
(SHOWN IN AUTO MODE)
J992-YL
E750-PU
J992-YL
200-BK
E750-PU
3
12
J992-YL
E750-PU
E750-PU
E750-PU
GN
GN
987-WH
EXHAUST DIVERTER RESISTOR
124-6704
987-WH
215-BK
J992-YL
1
TO RETARDER
LAMP
Q
Q
Q
Q
Q
Q
NOTE GA-301128-8479GGG
NOTE G
BR
201-BK-18
201-BK-18
201-BK-18
201-BK-18
201-BK-18
201-BK-18
201-BK-18
HARNESS CODE 4
HARNESS CODE 3
HARNESS CODE 2
HARNESS CODE 0
2
J
251-BK
200-BK
L58
L58
L58 L58
L58
L58
L58
L58
L58 L58
893-GN
892-BR
893-GN
892-BR
215-BK
893-GN
892-BR10
9
8
7
892-BR
6
5
4
3
2
1
893-GN
32
31
33
35
28
27
26
129-PU
25
24
892-BR
23
22
893-GN
21
34
893-GN
892-BR
6
7
8
20
200-BK
200-BK
XMSN SPEED
DISTRIBUTOR
3T-5438
A
A
315-GN-12
OIL BURN
CONTROL
117-9364
SOL 2 OUT
SW 1 IN
SW 2 IN
SOL 1 OUT
GROUND
+BATT
BR
GY
YL
OR
BK
RD
F705-PK
200-BK
956-BR
123-W-18
C
G
D
123-WH-18
K985-BR-18
NOTE F
315-GN
123-WH-18
G
G
G
G
G
G
L20
L20
L20
L20
L20
L20
L20
614-PU-18
G
G
G
G
G
G
G
998-BR
F720-GN-18
998-BR-18
F717-YL-18
200-BK-18200-BK-18
614-PU-18
200-BK-18
200-BK-18
GGG
200-BK-18
200-BK-18
200-BK-18
START
AID SW
3E-7176
THROTTLE BACKUP SW
126-0236
J992-YL
614-PU-18
614-PU-18
893-GN
892-BR
472-OR
290-BK
3
2
B
A
291-BK
987-WH
RD
F975-OR
113-OR
410-WH
411-PK
403-GN
481-PK
417-GY
614-PU-18
G
G
446-PU
2
447-PK
426-BR
200-BK-18
614-PU-18
200-BK-18
408-WH
E735-PU
A/C ON SW
125-9257
521-YL-14
518-OR518-OR-14
518-OR
NOTE F
998-BR-18
518-OR-18
F720-GN-18
129-PU-18
103-YL-14
ZZ
ZZ
614-PU
200-BK
LEVER
POSITION
LAMP
110-2079
4
614-PU
2
1
2
6
521-YL-14
251-BK
251-BK
ARC
CODE
612-GY
604-OR
F709-BU
L43
L43
L43
L43
L43
L43
998-BR
F717-YL
F720-GN
200-BK
958-YL
958-YL
958-YL
10A
10A
958-YL
604-OR-14
Q
Q
Q
STOPLAMP
RELAY
3E-5239
604-OR-14
958-YL
103-YL
103-YL-14
103-YL-14
103-YL-14
619-GN-14
799-WH
NOTE F: NOT USED ON MACHINES WITH ARC
L74
L48
L79
L79
L102
5
L102
L87
L84
L84
L82
L42
L87
L87
L87
L87
L46
L82
L82
L82
L97
L97
L97
L83
L83
L84
L84
L89
L89
L89
L90
L90
L90
L91
L91
L91
L94
L94
L94
L94
L35
L42
L79
L79
L50
L50 L50
L60
L60
L60
L60
L93
L93
L93
L49
L49
L49
L49
L49
L49
L92
L92
L92
L92
L92
L48
L48
L48
L25
L38
L38
L74
L81
L77
L77
L103
L103
L103
L78
L85
L85L85
L85
L64
L86
L86
L86
L86
L81
L81
L81
L45
L45
L78
L103
L101
L101
L101 L101
CONN 9
L101
L74
L75
L74
L75
481-PK-18
450-YL-18
L81
L64
L63
L67
403-GN-18
317-YL-18
200-BK-14
L65
L65
L65
L86
L86
L72
L72
L72
L73
L73
L73
L71
L71
L71
L72
L73
L71
L63
150-RD-14
150-RD-14
L67
L67
L66
113-OR-14
L66
L67
L66
L67
RD
L100
L100
L100
L100
L100
A
L101
L101
L101
L103
L103
L81
L100
L100
L28
L28
E986-YL
L34
L34
L59
L78
L78
L45
L76
L76 L76
L76
L75
L78
L78
L94
L54
L53
L54
L53
L54
L53
L51
L51
L52
L51
L52
L51
L78
L78
L78
L77
L77
L77
L77
L77
L77
L93
L62
L62
L62L62
L38
L38
L25
L48
L48
L41
L92
L49
L96
L96
L96
L40
L99
662-YL
614-PU-18
3
2
B
1
G
L15
L15
ANTENNA
9W-3072
L74
L62
L54
L61
998-BR
L34
L28
L34
L28
L45
L75
L45
L28
L34
E986-YL
L76
L59
L24
L24
L24
L60
L76
L37
L52
L52
L60
L39
L57
L61 L61
L59
L57
L57
L39
L61
L60
L59
L57
L52
L39
L37
L37
L37
L37
L37
L32
L32
L32
L32
L32
L31
L53
L53
L46
L46
L92
L49
L49
L51
L53
L57
L53
L51
L57
L53
L51
L50
L49
L28
L34
L42
L39
L31
L29
L41
L41
L35
L35
L35
L33
L33
L31
L31
L30 L30
L29
L45
L45
L45
L79
L28
L35
L36
L34
L96
L38
L41
L40
L40
L39
L42
L44
L44
L42
L40
L39
L44
L42
L40
L39
L38
L38
L38
L37
L41
L79
L96
L33
L33
L34
L34
L35
L35
2
1
522-WH-14
TRAILER
STOP LAMP SW
2M-9346
NOTE E
WW
WW
958-YL
200-BK
F720-GN-18
K985-BR-18
RD
D
C
RD
WW
202-BK
231-BK
WW
998-BR
2
5
3
B
6
BK
BK
GN
GN
BRAKE OIL
DIVERTER SOLENOID
101-3430
BRAKE OIL DIVERTER
TEMP SW
3E-6449
J
J
ARC SUPPRESSOR
106-8704
113-OR
126-PK
L918-GN
L918-GN
200-BK
2
1
2
1
~T
619-GN-14
610-OR-14
619-GN-14
251-BK
102-BU-14
E735-PU
E735-PU-18
HEADLAMP
RELAY
3E-5239
200-BK
E735-PU
200-BK
6
4
5
2
663-YL
661-GN
201-BK
1
BK
BK
998-BR
E729-GN
2
1
85
86
30
87
87a
Q
A
A
A
Q
Q
Q
Q
87a
87
30
86
A
A
A
87a
87
30
86 85
4
200-BK
3
E986-YL
8586
87
87a
2
1
956-BR
E986-YL
998-BR
998-BR
L35
L36
L36
121-YL-12
A
121-YL
614-PU
408-WH
E794-YL
E793-BU
AL
AL
202-BK
CONN 6
200-BK
200-BK
27
BODY UP
SENSOR
3E-0461
E
E J
202-BK-14
E750-PU
126-PK
BK-18
RD-18
+ BATTERY
775-BR
774-YL
773-GY
126-PK
E750-PU
202-BK
SOLENOID
11
10
8
2
6
1
F717-YL-18
WH
BK
OR
SIGNAL
VS
GROUND
BK-18
BK-18
BK-18
BK-18
521-YL-18
522-WH-18
998-BR-18
L30
L29
L27
L27
F975-OR
2
OIL BURN
RESISTOR
124-6704
L27
L27
L55
L55
1
998-BR
998-BR
85
86
998-BR-18
998-BR-18
T/C
TEMP SENSOR
100-3055
OIL LEVEL SW (ADD)
ATA DATA LINK -
ATA DATA LINK +
UNUSED
ENGINE
GROUND
229-BK-14
ENGINE LOW
OIL LEVEL SW
123-2993
ENGINE ADD
OIL LEVEL SW
123-2993
998-BR-18
F719-BR-18
F718-BU-18
998-BR-18
BK-18
799-WH
251-BK
799-WH
C
B
200-BK-14
R TURBINE EXHAUST F704-OR-18
F703-GY-18L TURBINE EXHAUST
THROTTLE SIGNAL F702-GN-18
XXX
XXXXXX
L55
L28
L28
L28
102-BU-14
L24
L25
L18
L18
L18
L21
L21
L21
L23
L23
L23
L22
L22
L63
L63
L56
L56
L15
L15
L15
L15
L67
201-BK-18
L65
L66
L66
L16
L32
306-GN
307-OR
126-PK
614-PU
202-BK
201-BK
200-BK
123-WH
728-BU
129-PU
200-BK
200-BK
123-WH
201-BK
201-BK
307-OR
728-BU
GN
GN
C
2
1
30
87
87a
UNUSED
UNUSED
C
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
308-YL-18
C
C
C
200-BK
129-PU
799-WH
202-BK
K972-BR
202-BK
202-BK
GN-18
GN-18
891-BU
306-GN
307-OR
306-GN
307-OR
891-BU
202-BK
202-BK
202-BK
321-BR
321-BR
K972-BR
K972-BR
450-YL
452-PU
E750-PU
720-PU
706-BR
K985-BR
K986-PK
2
1
892-BR
893-GN
893-GN
893-GN
893-GN
893-GN
893-GN
892-BR
892-BR
892-BR
892-BR
892-BR
893-GN
892-BR
892-BR
893-GN
893-GN
892-BR
892-BR
893-GN
893-GN
892-BR
L61
891-BU
707-PU
794-YL
E750-BU
E750-PU
E750-PU
728-BU
728-BU
727-GN
L22
L25
720-PU
E735-PU
891-BU
707-PU
L44
767-WH
700-PK
537-GN
537-GN
700-PK
767-WH
767-WH
700-PK
E729-GN
126-PK
126-PK
614-PU
614-PU
L44
L44
L35
L35
614-PU
614-PU
614-PU
611-PU-14
611-PU-14
610-OR-14
619-GN-14
998-BR
619-GN-14
F717-YL
539-BU
540-WH
614-PU 614-PU
Q
Q
200-BK
958-YL
522-WH-14
521-YL-14
L79
521-YL-14
522-WH-14
517-BU
516-GN
L79
L92
L49
462-YL
515-GY-14
454-GN
454-GN
129-PU
411-PK
410-WH
411-PK
2
1
403-GN
308-YL
308-YL
308-YL
308-YL
308-YL
308-YL
308-YL
727-GN
307-OR
L36
201-BK
201-BK
201-BK
201-BK
201-BK
L36
201-BK
201-BK
201-BK
A
200-BK
200-BK
200-BK
201-BK
1
L36
105-BR
L61
L46
L44
2
113-OR-18
L70
998-BR-18
998-BR-18
998-BR-18
Q
200-BK-14
200-BK
A
CONN 17
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
308-YL
2
1
200-BK-14
176-OR
176-OR
150-RD-14
150-RD-14
11
FAN SPEED +
141-PK-14
140-BU-14
A
2
1 140-BU-14
141-PK-14 1
2
A
612-GY-14
612-GY
612-GY
132-PK
135-BU
132-PK
121-YL
L42
L42
136-GN
614-PU
136-GN
129-PU
L35
124-GN-14
L42
L38
L96
L79
L25
L48
L92
L36
L60
L41
L49
L99
L99 L99
L99
L54
L54
L99
L54
L54
L99
L98
L98
L98
L98
K985-BR
K986-PK
E735-PU
518-OR
F717-YL
454-GN
521-YL-14
517-BU-18
516-GN-18
515-GY-18
124-GN-14
3
2
520-WH-18
6
5
521-YL-14
454-GN
452-PU
452-PU
450-YL
450-YL
521-YL-14
124-GN-14
TRANS
521-YL-14
123-WH
122-BU
A
113-OR
123-WH
998-BR-18
C
101-RD-10
112-PU-12
K972-BR
TO MANUAL
RETARD PRESS SW
K985-BR-18
AUTO RETARD
PRESSURE SW
111-9563
ARC
SUPPLY
VALVE
3E-8691
ARC
CONTROL
VALVE
3E-8691
F707-WH-18
F710-BR
F707-WH
K988-WH
K989-BU
K991-OR
K992-PU
202-BK
202-BK
202-BK
202-BK
202-BK
454-GN
F710-BR
F707-WH
317-YL
450-YL
2
UNUSED
F710-BR
BK-18
200-BK-18
200-BK-18
1
2
UNUSED
1
UNUSED
2
317-YL
UUU
UUU
CONN 11
CONN 12
UUU
UUU
UUU
UUU
202-BK
202-BK
UUU
UUU
ATCH HD-1302117-2929
102-BU
102-BU-14
1
PANEL
LAMP
110-2079
BK-18
102-BU-14
138-GN
998-BR
A
998-BR
A
109-OR-4
UUU
109-OR-6
A
A
Q
10
9
8
7
6
5
4
3
2
1
YL-18
OR-18
BK-18
WH-18
PK-18
PU-18
RD-18
BR-18
GN-18
BU-18
UNUSED
176-OR
892-BR
893-GN
K992-PU
K991-OR
454-GN
450-YL
K989-BU
K988-WH
K986-PK
K985-BR
1
GROUND
MANUAL RETARD PRESS SW
AUTO RETARD PRESS SW
AUTO RETARD LAMP
ENGINE SPEED
AIR SUPPLY VALVE
AIR CONTROL VALVE
HARNESS CODE 3
HARNESS CODE 1
HARNESS CODE 2
HARNESS CODE 0
AUTO RETARD OFF
AUTO RETARD ON
129-PU
472-OR
F975-OR
2
NNN
CONN 23
L25
799-WH
636-GN
635-BU
636-GN
635-BU
173-YL
799-WH
315-GN
251-BK
619-GN-14
539-BU
540-WH
L25
L24
M
E750-PU
CONN 35
F720-GN
612-GY
539-BU
540-WH
201-BK
411-PK
454-GN
200-BK
OPERATOR SW
462-YL
123-WH
727-GN
307-OR
308-YL
105-BR
614-PU
700-PK
767-WH
515-GY-14
516-GN
20
BK-00
799-WH
200-BK-18
129-PU-18
GN-18
YL-18
OR-18
OR-18
BK-18
KKK
KKK
TO MOUNTING
BOLT
TO FRONT
HOUSING
14 GA
A-1001118-0291TTT
STD
A-2017X-6315
C-100132-6469RRR
RRR
RRRRRR
RRRRRR
RRR
RRR
RRRRRR
RRRRRR
RRRRRR
RRRRRR
RRR
KKK
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BR
BK-18
BK-18
Q
Q
Q
Q
Q
Q
Q
173-YL
315-GN315-GN
315-GN
767-WH
767-WH
202-BK
202-BK-14
251-BK
F732-PK
+ BATTERY
F732-PK
998-BR-18
FAN
SPEED
SENSOR
119-4367
A700-OR-18
A700-OR-18
A700-OR-18
2
4
A
A700-OR-18
121-YL
1
A700-OR-18
201-BK
C
B
A
997-OR-18
997-OR-18
993-BR-18
997-OR-18
997-OR-18
997-OR-18
A700-OR-18
A700-OR-18
F704-OR-18
F703-BR-18
E795-YL-18
A751-YL-18
A746-PK-18
C
A
B-402
997-OR-18
132-4859
200-BK-18
RH TURBO
INLET
EXHAUST
TEMP
109-4367
A
B
C
GROUND
VS
SIGNAL
OR-18
BK-18
WH-18
DATA LINK -
408-WH
710-GN
C
A700-OR-18
993-BR-18
F704-GN-18
F703-BR-18
993-BR-18
A700-OR-18
C
WH-18
BK-18
OR-18
SIGNAL
VS
GROUND
C
B
A
E795-YL-18
993-BR-18
997-OR-18
C
892-BR-18
893-GN-18
2
2
A
B
K984-GY-14
DATA LINK +
A
W
317-YL
START AID
RESISTOR
124-6704
710-GN
126-PK
3
NN
ATCH CA-7007I-5516
C
ATCH C
AIR
START
SOLENOID
5T-4434
HH
GN
BK
L65
A-60331-8761
LL
HHH
1
3
NOTE C
1
2
799-WH
2
306-GN
BB
BB
87a
87
30
86
RD-00
A-7
A-7
109-4394 00
002G-4177
RR
QQ
200-BK
403-GN-18
H
AAA
MM
JJ
HH
251-BK
317-YL-18
BUS BAR
8C-6358
NOTE B
BUS BAR
8C-6358
NOTE B
85
GG
GG
EE
QQ
RR
GG
GG
DD
10
102-BU-14
DD
LL
CC
KK
H
AA
RD-00
RD-00
RD-000
9
31
UNUSED
L17
T
T
T
T
UU
UU
BK-2
TO
FRAME
33
34
TO
CYLINDER
HEAD
UNUSED
UNUSED
UNUSED
UNUSED
8
8
9
5
6
22
Q
Q
10
QQQ
A
A
27
799-WH
251-BK
251-BK
36
15
18
N
N
126-PK
200-BK-18
1
N
12
16
11
D
D
1
TTT
2
3
202-BK
707-PU
E750-PU
893-GN
F707-WH
317-YL
6
138-GN
2
23
14
22
36
18
27
25
A
7
35
452-PU
481-PK
612-GY-14
5
K972-BR
321-BR
BACKUP
RELAY
3E-5239
1
998-BR
2
893-GN
892-BR
201-BK
105-BR
L65
J
H
G
L65
REF: 108-1029 BEACON
9U-7206 FLORESCENT
LAMP
F
E
403-GN
2
4
1
2
G
G
M
M
M
M
M
M
M
M
200-BK
200-BK
1
306-GN
L24
L24
L15
L47
D
200-BK
893-GN
892-BR
202-BK
200-BK
200-BK
200-BK
121-YL
121-YL
135-BU
135-BU
4
200-BK
410-WH
201-BK
12
39
F709-BU
450-YL
E794-YL
2
1
5
A700-OR-18
18
40
AUTO
LUBE
D
L65
L65
NN
CONN 22
A
13
H
200-BK
A
L47
K
C
L47
604-OR
L47
L29
L16
F720-GN-18
F717-YL-18
F710-BR-18
113-OR-14
F702-GN-18
150-RD-14
L70
892-BR-18
L70
998-BR-18
ENGINE CONTROL
132-8900
019G-0549
008W-3713
002A-7097
01
F710-BR
227-BK
GN-18
GN-18
GN-18
2
3
START RELAY
BU ALARM
NEUTRAL EMS
NEUTRAL PMC
START SW
SERVICE
CLEAR
DRIVE RET.
UNUSED
1
DATA -
DATA +
28
892-BR
893-GN
280-BK
UNUSED
YL-18
L
202-BK
893-GN
L
892-BR
BR
OR-18
BK-18
WH-18
F705-PK
A
PK-18
1
PU-18
113-OR
450-YL-18
RD-18
113-OR
6
BR-18
A
GN-18
113-OR
BU-18
113-OR
113-OR
201-BK-18
150-RD-14
113-OR
2
A700-OR
F702-GN
201-BK
113-OR
9
113-OR-18
ECAP
D
105-BR
THROTTLE
POSITION
SENSOR
3E-7700
113-OR
F702-GN
998-BR
A700-OR
113-OR
5
F709-BU
337-WH
A513-PK
A513-PK
H
508-PU
509-WH
512-GN
511-BR
135-BU
RH SPEAKER
6T-7695
LH SPEAKER
6T-7695
L16
-
+
C
L32
B
337-WH
L75
3
L11
F709-BU
140-BU-14
E735-PU-18
315-GN
F707-WH998-BR
K984-GY-14
315-GN-12 317-YL-12
315-GN-12
START AID
ON RELAY
3E-5239
START AID
HOLD RELAY
3E-5239
6
-
WH-18
+
BK-18
RADIO
3E-7140/3E-7141
RD-18
SIGNAL
+V
4
176-OR
G
G
G
GROUND
G
6
G
5
K985-BR
6
5
1
2
3
BU-18
4
3
D-900EEE
1
D-401116-9309
7
E750-PU
L54
517-BU
8
F720-GN
ANTENNA
OR
LEFT SPKR -
RIGHT SPKR -
30
10
8
UNUSED
GROUND
F716-WH
F715-PU
38
FUEL FILTER SW
116-9933
+B MEMORYYL
F726-YL-18
F727-BU-18
BK
GY/BK,VI/BK
F728-BR-18
F729-GN-18
GY/VI
F729-GN-18
RD
WH/BK,BN/BK
WH/GN
F728-BR-18
COOLANT
FLOW SW
3E-6430
539-BU
RIGHT SPKR +
F727-BU-18
LEFT SPKR +
+ BATTERY (12V)
+BATTERY (24V)
24V-12V CONVERTER
119-1733
1
2
3
125-7128
PU
01118-7118
F725-WH
412-BU-18
4
A/C FAN PRESS SW
111-9560
FAN
CLUTCH
SOL
109-3025
F726-YL-18
1
-BATTERY
-BATTERY
F722-OR-18
C
ANALOG RET
+V ANALOG
290-BK
A231-BK
SIGNAL
36
CRANKCASE PRESS
37
5
611-PU-14
619-GN-14
202-BK
614-PU
K972-BR
540-WH
85
E986-YL-18
1
A218-BK
C
J
229-BK-14
L32
C
18
3
202-BK
L56
CONTINUOUS OIL
BURN INJECTOR
109-1374
CONN 28
CONN 27
85 86
30
87
ATCH H
A216-BK
SOL 6&8 RETURN
101-RD-4
SOL 5&7 RETURN
229-BK-14
F700-BU-18
SOL 2&4 RETURN
2
291-BK
17
11
19
2
L48
BK-18
L48
6
E799-BR-18
150-RD-14
A
A
720-PU
202-BK
2
14
21
2
998-BR-18
SOL 1&3 RETURN
SOLENOID 8 POWER
SOLENOID 7 POWER
997-OR-18
201-BK-18
452-PU-18
F725-WH-18
3
2
1
998-BR-18
L66
F722-OR-18
4
C
E799-BR-18
6
F700-BU-18
B
L26
L26
MAN ETHER
C-12
L26
412-BU-18
37
8
A
OIL PRESS (UNFLTR)
PRELUBE RELAY
SHUTTER SOLENOID
E986-YL-18
539-BU
CRANKCASE
PRESSURE
SENSOR
103-6093
7
1
1
1
3
5
10
A-8
00
00
01
D
00
00
D-15
02
00
01
C-11007G-1060
A-7
00118-8580
BULB
7N-9943
24
E986-YL-18
3
4
BU-18
3
D-10
B-2
YL
A-13
B-13
D-15
A-67I-4731
116-9310
2G-5786
118-6753
2A-7098
00
6S-1061
125-3565
2A-7093
118-2430
01116-2655
01118-5772
02126-8865
05116-2654
03
BBB
04
02
01
02
02
04116-9305
06116-9308
CHG
23
22
4N-6580
C
EE
W
W
Q
40
12
25
21
173-YL
TURN LAMP
BREAKER
6N-8589
39
2
101-RD-10
J
H
31
H
9
2
H
H
J
21
20
E793-BU-18
E794-YL-18
A
J
F732-PK
TO
FRAME
33
NNN
N
16
N
CONN 18
A
E795-YL-18
A
D
A
A
A
3
F720-GN-18
612-GY
18
17
15
610-OR-14
200-BK
1
3
19
37
28
27
36
35
34
20
32
Q
A
CONN 31
16
12
F975-OR
10
9
7
6
31
A/C REFRIGERANT
PRESS SW
114-5333
NOTE A
02117-2933VVV
VVV
202-BK
202-BK
K986-PK
137-OR-12
GN-18
23
YL-18
OR-18
SIGNAL
+V ANALOG
ANALOG RET
C
B
A
ANALOG RET
+V ANALOG
SIGNAL
1
6
30
5
24
4
8
9
38
29
11
22
F975-OR
14
13
7
10
17
18
15
26
G
G
G
G
N
G
LAMPS (7)
107-1983
201-BK-18
200-BK-18
200-BK-18
PRELUBRICATION
RELAY
3E-5239
CONN 30
A
614-PU-18
200-BK-18
200-BK-18
462-YL-18
612-GY-18
539-BU-18
201-BK-18
411-PK-18
540-WH-18
L54
611-PU
E750-PU-18
E750-PU-18
L54
124-GN-14
N
200-BK-18
200-BK-18
F717-YL-18
A
16
201-BK-18
123-WH-18
123-WH-18
201-BK-18
201-BK-18
G
G
4
3
32
31
30
27
1
24
26
25
40
33
3
4
17
39
38
37
36
5
12
35
23
22
20
11
10
2
19
21
8
6
9
15
18
28
34
14
E793-BU
13
15
7
29
113-OR
122-BU
515-GY-14
123-WH
200-BK-14
132-PK
516-GN-14
176-OR
517-BU-14
138-GN
315-GN
129-PU
MOTOR
121-YL
126-PK
5
408-WH
998-BR
1
1
2
MUR440
BK
2
BK
G
G
G
WH/RD-14
BK-14
200-BK-14
515-GY-14
200-BK-14
G
518-OR-18
517-BU-18
516-GN-18
515-GY-18
520-WH-18
124-GN-14
2
4
3
8
BLOWER SW
123-6389
517-BU
516-GN
515-GY-14
124-GN-14
521-YL-14
THERMOSTAT
3E-5464
BODY UP
1
E750-PU-18
1
BLOWER
112-9565
522-WH-14
2
3
481-PK-18
201-BK-18
150-RD-14
481-PK-18
201-BK-18
E796-GY-18
308-YL
F705-PK-18
136-GN
105-BR
140-BU-14
F714-PK-18
612-GY
101-RD-4
141-PK-14
103-YL-14
291-BK
LH TURBO
INLET
EXHAUST
TEMP
109-4367
L10
C
4
290-BK
173-YL
4
201-BK
102-BU-14
202-BK
150-RD-14
727-GN
150-RD-14
124-GN-14
200-BK
135-BU
6T-6066
6T-6066
201-BK
138-GN
CONN 24
5
101-RD-10
12
101-RD-10
A
W
101-RD-10
101-RD-10
W
103-YL-14
105-BR
3
136-GN
101-RD-10
101-RD-10
W
W
112-PU-12
101-RD-10
101-RD-10
101-RD-10
1
C
2
105-BR
105-BR
103-YL-14
BBB
4
4
10
6
1
5
24
Q
Q
V
Q
SHUTTER
SOL
9X-9482
ZZZ
Q
Q
A-6
A-7
2A-7094
2A-7096
A-7
125-7129
A-6
A-7
A-7
A-6
A-7
A-7/A-8
MM
LL
Q Q Q Q Q
BK
Q
Q
Q
Q
Q
BREAKER
6N-8589
109-OR-12
251-BK
308-YL 308-YL
2
B-8
C-14
A-15
D-6
B-1
9
4
3
D-5
00
8
13
A217-BK
01
01
337-WH
103-YL-14
135-BU
C-9
202-BK
202-BK
202-BK
140-BU-14
135-BU
200-BK
200-BK
201-BK
201-BK
Q
511-BR
512-GN
509-WH
508-PU
200-BK
200-BK
L36
1
103-YL-14
103-YL-14
L36
291-BK
290-BK
2
UNUSED
P
150-RD-14
150-RD-14
T
P
T
ATCH CB-1100118-6756H
ATCH H
F709-BU
998-BR
611-PU-14
611-PU-14
HEAD LAMP
DIMMER SW
2H-1855
539-BU
540-WH
614-PU
619-GN-14
611-PU-14
200-BK
200-BK
200-BK
200-BK
XMSN CONTROL
3E-5390
1
200-BK
200-BK
2
ARC CONTROL
3E-3663
3
200-BK
200-BK
G
540-WH
16
POWER BOSS
9G-8451
140-BU-14
112-PU-12
Q
Q
SPARE 141-PK-14
112-PU-12
Q
Q
Q
200-BK-18
200-BK-8
A215-BK
308-YL
7
7
452-PU
ATMOS
PRESSURE
SENSOR
103-6093
A747-GY-18
993-BR-18
662-YL
661-GN
663-YL
892-BR
201-BK
4
6
F
CONN 10
20
34
33
F
F
F
997-OR-18
450-YL
C
A
DD
B
CC
A-5
2
AAA
113-OR
WW
NNN
5
CABLE AS.
202-BK
10
24
W
23
18
9
L
CONN 19
C
ANALOG RET
E750-PU
NOTE H
F-15
BB
4
AA
WIRE AS.
707-PU
452-PU-18
201-BK-18
CONN 33
T
S
R
K
J
H
D
521-YL-14
L26
A
HARNESS AS.
LOCPART NO.IDENT
109-OR-4
NOTE E
L70
L70
L70
UU
Z
G
E
X
Q
P
C
SS
L
M
INJECTOR GP (8)
132-0203
RECEPTACLE AS. (8)
9X-0352
K
+V ANALOG
SIGNAL
998-BR
614-PU
513-0R-14
522-WH-14
700-PK
OR-18
173-YL
87a
3
129-PU
OR-18
YL-18
GN-18
CIGAR LIGHTER
W
28
6
21
3
5
6
4
JJJ
JJJ
3
JJJ
JJJ
32
31
13
17
1
2
200-BK
7
2
25
5
24
12
85
14
19
23
22
PYLD MNTR
202-BK
8
20
ATCH H
NOTE H: 777D ONLY
A
16
15
(101-RD-10)
(314-PU-10)
(101-RD-10)
(304-WH-10)
A
2
1
STEERING SW
3E-6429
BK-18
200-BK-8
728-BU
AL
A
E
AL
450-YL
11
TIMING
CALIBRATION
CONNECTOR
CONN 36
23
1
1
F975-OR
201-BK
426-BR
B-200
86
446-PU
472-OR
410-WH
411-PK
403-GN
30
L15
1
STD
ATCH C
ATCH
799-WH
201-BK
123-WH-18
472-OR
87
200-BK-14
L15
6
BK-18
1
2122-BU
728-BU
200-BK
AIR DRYER
2G-2159
201-BK
426-BR
200-BK-18
611-PU
87a
126-PK
123-WH-18
7
GN-18
YL-18
OR-18
A
454-GN-18
121-YL-12
251-BK
32
867-PU
866-PK
865-GY
317-YL
864-BR
863-BU
998-BR
251-BK
ENGINE
SPEED/
TIMING
SENSOR
127-1008
892-BR
2
481-PK
E-5
200-BK-18
540-WH-18
C
B-4
200-BK-18
112-PU-12
10A
NNN
F708-YL
L83
L94
307-OR
22
13
26
13
14
15
15
14
11
6
767-WH-18
216-BK
700-PK-18
213-BK
ID CODE 1
ID CODE 2
102-BU
103-YL
614-PU-18
417-GY
19
18
12
16
17
1
3
2
10
SIGNAL
E735-PU
1
5
4
+V ANALOG
NNN
BK-00
ENGINE
COOLANT
TEMP
SENSOR
102-2240
AUX START
RECEPTACLE
11
20
122-BU
450-YL
40
2
452-PU
614-PU
9
8
F975-OR
202-BK
201-BK
446-PU
6
7
WH-18
BK-18
OR-18
A
FUEL LEVEL SENDER
115-1782
201-BK
C
447-PK
B
2
1
BK-18
+V
PK-18
GROUND
SIGNAL
202-BK
T/C OUTPUT
SPEED SENDER
6V-2455
201-BK-18 2
610-OR
610-OR
FLASHER
108-0358
767-WH-18
C
700-PK-18
B
4
14
15
13
22
20
ENGINE
OIL
PRESSURE
SENSOR
(FILTERED)
103-6092
24
21
ANALOG RET
23
A
1
201-BK-18
TRACTION AID TEST/
OPERATOR MODE SW
125-2063
+24 V BATTERY IN
+24 V SWITCHED IN
E735-PU-18
GROUND
+12 V MEMORY OUT
ARC
SUPPRESSOR
106-8704
BK-18
WH-18
C
450-YL-18
200-BK
ENGINE
SPEED
6V-2455
136-GN
BK-18
BK-18
BK-18
H
H
200-BK
DISCONNECT SW
7N-0718
610-OR-14
H
306-GN
126-PK
3
202-BK
C
202-BK
00117-2932
216-BK
772-BR
4
2
3
6
1
773-GY
998-BR-18
SMOKE
BOX
SOLENOID
101-3430
892-BR
893-GN
F705-PK-18
799-WH
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
138-GN
8
WH-18
BU-18
BR-18
GY-18
PK-18
MODE
TEST/SET
LCD LATCH
LCD CLOCK
TX LCD OUT
D
3
+12 V SWITCHED OUT
774-YL
BU
291-BK
290-BK
417-GY
481-PK
403-GN
411-PK
SIGNAL
+V ANALOG
ANALOG RET
C
B
A
A
B
C
ANALOG RET
+V ANALOG
SIGNAL
OR-18
BK-18
WH-18
C
CONN 37
L14
L14
L14
L14
L9
SOLENOID 6 POWER
L16
L13
L13
L13
L15
L15
L5
L5
L5
L4
775-BR
L4
L4
L4
L4
1
410-WH
2
L4
113-OR
34
4
L4
L56
L56
L6
L6
L6
SOLENOID 5 POWER
SOLENOID 4 POWER
L3
L3
L9
L9
L8L8
L11
L11
BRAKE AIR PRESS
37408-WH-18
P2
662-YL
661-GN
799-WH
891-BU
707-PU
799-WH
635-BU
636-GN
B
UNUSED
F708-YL-18
SOLENOID RETURN
C
NN
GROUND
F708-YL-18
F710-BR-18
F709-BU-18
F707-WH-18
1
2
C
C
F705-PK-18
+BATTERY
TIMING CAL +
TIMING CAL -
UNUSED
OIL LEVEL (LOW)
ETHER ON RELAY
THROTTLE OVERRIDE
CAT DATA LINK -
CAT DATA LINK +
+V THROTTLE
IDLEDOWN/SHUTDOWN
KEYSWITCH ON
ETHER HOLD
OIL BURN RELAY
+BATTERY
201-BK
30
B
A
103-YL-14
E750-PU
113-OR
201-BK
3
1
AFTER
COOLER
TEMP
SENSOR
102-2240
A
F709-BU-18
306-GN
F708-YL-18
F721-GY-18
RD-00
997-OR
36
24
121-YL
H
E750-PU
E750-PU
V
472-OR-18
417-GY-18
426-BR-18
481-PK-18
200-BK-14
892-BR-18
993-BR
893-GN-18
447-PK-18
201-BK
2
1
446-PU-18
403-GN-18
291-BK-18
290-BK-18
411-PK-18
410-WH-18
201-BK-18
GN-18
BK-18
GN-18
BK-18
(L)
S-2
(R)
S-1
PROPORTIONAL
SOLENOID
3T-0062
767-WH
202-BK
202-BK
767-WH
202-BK
769-BU
770-GN
E
3
2
1
BK
WH
GROUND
SIGNAL
+V
C
B
A
GROUND
SIGNAL
+V
C
B
A
F
E
D
113-OR-18
2
1
11
0
1
1
C
B
A
2
1 11
0
1
2
3
4
5
290-BK
6
7
614-PU-18
9
614-PU-18
202-BK
202-BK
202-BK
770-GN
200-BK-18
200-BK-18
769-BU
200-BK-18
24
12
200-BK
306-GN
200-BK
306-GN
E794-YL-18
E793-BU-18
E796-GY-18
12V BATTERY
9X-9731 STD
12V BATTERY
9X-9731 STD
SUPPLEMENTAL
STEERING
116-4531
AA
JJ
BK-18
BK-00
BK-00
NEGPOS
F713-OR
STARTER
1W-6363
NOTE B
STARTER
1W-6363
NOTE B
FUSE
3K-8782
10A
12V BATTERY
9X-9731 STD
NOTE B
12V BATTERY
9X-9731 STD
NOTE B
23
13
H
CC
MM
QQ
RR
03
KK
LL
AA
HH
BK-18
RD-00
RD-00
RD-10
RD-10
WH/BK-10
WH/BK-10
BK-000
STEERING
MOTOR
RELAY
3E-0154
START
RELAY
118-3534
NOTE B
L6
BRAKE OIL
TEMP SENSOR
100-3055
14
HHH
522-WH-14
HHH
BK-00
RD-00
BK-00
G S
MTR BAT
MOTOR
G S
MTR BAT
MOTOR
MOTOR
NEGPOSNEGPOSNEGPOS
201-BK
40
14
19
ALTERNATOR
9X-7803
3
JJ
9
4
6
15A
201-BK
727-GN-18
F975-OR
472-OR
426-BR
447-PK
15
16
35
RUNNING
LAMP SW
3E-2210
720-PU
202-BK
19
8
CCC
CONN 34
446-PU
G
G
+24V (OUT)
PK-18
YL-18
BK-18
GROUND
5
3
2
794-YL
202-BK
202-BK
G
1
GY-18
WH-18
SPEED
+ BATTERY
7
614-PU-18
614-PU-18
6
4
3
1
5
2
E735-PU-18
129-PU
G
G
G
200-BK-18
C
L98
OPERATOR STATION
113-OR-14
G
UUU
CONN 13
START RELAY
118-3534
NOTE B
410-WH
663-YL
727-GN-18
202-BK202-BK
MOTOR
9
10
11
B
A
200-BK
614-PU-18
OPERATOR STATION
123-WH-18
200-BK-18
1
3
SHIFT
LEVER POS
SENSOR
126-7896
711-BR-18
712-WH-18
713-OR-18
714-YL-18
715-GN-18
716-BU-18
202-BK-18
3
4
5
8
9
1
2
10
7
6
LEVER 1
LEVER 2
LEVER 3
LEVER 4
LEVER 5
GND VERIFY
GROUND
NEUTRAL
123-WH
711-BR
712-WH
713-OR
714-YL
715-GN
716-BU
202-BK
5
6
7
8
9
10
4
11
12
2
SUPPL
STER SW
127-4986
135-BU
PPP
P
G
G
G
P
L TURBO
INLET
PRESSURE
SENSOR
103-6093
19
PP
121-YL
P
454-GN
P
F702-GN
27
29
A700-OR
FUEL LEVEL SENDER
SERVICE
ACTION LAMP
P
P
P
CONN 46
ACTION ALARM
GROUND
02
+ BATTERY
611-PU
200-BK-18
663-YL-18
661-GN-18
105-BR-18
ATCH H
22
662-YL-18
515-GY-14
614-PU
4
5
251-BK
201-BK-18
454-GN-18
454-GN-18
NOTE E: 776D ONLY
6
G
126-PK
G
G
G
308-YL-18
F-201116-9304F
CLEAR
ALTERNATOR
307-OR-18
BK OIL TEMP SENSOR
22
727-GN-18
123-WH-18
21
1
G
C-2
G
G
G
G
6
ATCH00
39
38
36
28
26
20
27
28
34
37
25
31
39
33
7
1
20
16
26
17
2
8
A/C FAN PRESS SW
29
32
38
15
12
18
G
G
462-YL-18
200-BK-18
B
200-BK
G
G
K986-PK-18
G
G
23
G
G
G
G
G
A
B
103-YL
G
614-PU-18
PANEL
LAMP
110-2079
200-BK-18
614-PU-18
200-BK-18
614-PU-18
614-PU-18
102-BU
G
102-BU-14
MONITOR
ACTION
ALARM
3E-6328
635-BU
126-PK
G
614-PU-18
200-BK-18
308-YL-18
00
307-OR-18
18
25
612-GY
17
454-GN-18
411-PK-18
L70
T
F975-OR-18
201-BK-18
540-WH-18
539-BU-18
10
A
M
200-BK
103-YL-14
602-WH
DOME
LAMP
8C-9678
3
8
9
AUTO RETARDER
OFF/ON SW
125-2076
CAB GND
113-OR-18
410-WH-18
411-PK-18
290-BK-18
2
EEE
291-BK-18
403-GN-18
710-GN
446-PU-18
447-PK-18
3
124-8794
706-BR
614-PU-18
W
02
JJJ
7
6
HARNESS CODE 4
K985-BR-18
291-BK
893-GN-18
958-YL
892-BR-18
481-PK-18
426-BR-18
LEVER 5
LEVER 4
LEVER 3
LEVER 2
LEVER 1
ID CODE 3
ID CODE 2
ID CODE 1
ID CODE 0
GND VERIFY
GND VERIFY
LKUP SOL
+ BATTERY
GROUND
UP SOL
DOWN SOL
RETARDER
BED RAISE
+V
BRAKE
GEAR 1
GEAR 2
GEAR 3
GEAR 4
GEAR 5
37
36
35
34
33
32
31
8
27
30
26
25
24
23
22
21
11
20
19
18
17
16
15
14
13
12
9
29
7
6
5
4
3
2
1
L
417-GY-18
472-OR-18
103-YL-14
321-BR
202-BK
13
706-BR
126-PK
2
8
14
5
1
11
711-BR
712-WH
713-OR
714-YL
715-GN
716-BU
8
707-PU
202-BK
126-PK
218-BK
219-BK
703-BU
704-GY
705-PK
709-OR
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
227-BK
217-BK
215-BK
4
L50
L50
L50
L50
202-BK
4
5
794-YL
6
2
772-BR
767-WH
200-BK
BK-18
123-WH
A
R
12
2
UNUSED
5
OPERATOR STATION
8
UNUSED
PROP SOL
TEST
ID CODE 4
ID CODE 3
RIGHT SP
LEFT SP
+ BATTERY
GROUND
RIGHT SOL
LEFT SOL
XMSN SP
11
19
36
37
16
2
18
4
3
5
15
30
29
GN-18
17
1
9
10
SPEED IN
6
216-BK
V
4
3
1
700-PK
767-WH
710-GN
FFF
BK
A
213-BK
768-OR
202-BK
3
W/PAYLOAD
W/O
TRACTION
AID USE
WIRE AS. FFF
R
202-BK
768-OR
132-PK 1
2
5
202-BK
769-BU
770-GN
775-BR
774-YL
773-GY
202-BK
215-BK
707-PU
12
774-YL
773-GY
775-BR
C
769-BU
C
1
770-GN
4
799-WH
612-GY-18
411-PK-18
201-BK-18
539-BU-18
200-BK-18
612-GY-18
200-BK-18
102-BU
867-PU
866-PK
865-GY
891-BU
864-BR
863-BU
860-PK
861-PU
858-GY
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
707-PU
250-BK
818-BR
820-BU
819-GY
859-YL
794-YL
636-GN
635-BU
251-BK
799-WH
TRACTN AID
OR-18 4
+10V
13
767-WH
12
767-WH
BRAKE
767-WH
202-BK-14
E750-PU
GROUND
126-PK
3
17
14
18
19
772-BR
L
768-OR
126-PK
612-GY
604-OR
605-YL
606-GY
614-PU
DOOR
COURTESY
LAMP SW
6T-6117
BK-18
202-BK
202-BK
202-BK
767-WH
770-GN
769-BU
775-BR
773-GY
3
23
774-YL
3
2
30
BK-18
17
993-BR-18
RD-00
RETARDER
BRAKE SW
103-4977
200-BK-18
L100
L102
614-PU-18
BK-18
202-BK
SERVICE/RETARDER
BRAKE TEE
SERVICE
BRAKE SW
3E-2034
22
21
STOP
LAMP SW
2M-9346
993-BR-18
SERVICE
BRAKE SW
3E-2034
C
994-GY-18
993-BR-18
C
C
993-BR-18
997-OR-18
11
33
C
A
24
537-GN
F721-GY-18
R TURBO
INLET
PRESSURE
SENSOR
103-6093
41
540-WH
539-BU
605-YL
606-GY
3
2
6
5
4
1
Q
F714-PK
993-BR
997-OR A
AAA
B
Q
C
ANALOG RET
+V ANALOG
SIGNAL
OR-18
33
34
35
40
31
BRAKE OVERSTROKE SW
TRANS FILTER SW
T/C TEMP SENSOR
CAT DATA LINK -
CAT DATA LINK +
F702-GN-18
13
408-WH-18
1
PRIM. STER
100-5778
MODULE LOAD
+8V SENSOR SUPPLY
MODULE CLOCK
MODULE +V
MODULE DATA
C414-BU-18
COOLANT FLOW SW
B
FUEL FILTER SW
KK
E708-PK-18
GG
403-GN-18
200-BK-18
G
E707-GN-18
11
K972-BR
YL-18
Q
103-YL-14
200-BK-18
200-BK-18
662-YL-18
Q
A
NNN
PAYLOAD
MONITOR
GREEN
LAMP
8T-9684
BULB
8T-9749
PAYLOAD
MONITOR
RED
LAMP
8T-9683
BULB
8T-9749
RD
RD
BK
BK
1
1
2
2636-GN
799-WH
799-WH
635-BU
NNN
A
113-OR
K972-BR
29
UNUSED
AS
3
2
6
5
LIGHT DIMMER
103-5526
200-BK-18
663-YL
RD-18
WH-18
ACCESSORY
OUTLET
117-2311
135-BU
619-GN-14
1
2
C
122-BU
TACH LAMP
113-OR
123-WH
129-PU
122-BU
113-OR
126-PK
135-BU
138-GN
200-BK
123-WH
612-GY
307-OR
513-OR-14
521-YL-14
129-PU-18
E-1
E-10
C-4
D-13
A-4
B-12
B-11
E-3
L6
BK-4
BK-4
AAA
200-BK
CONN 25
RD-00
C
2
1
1
2
CC
2
1
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
DESCRIPTIONSYMBOL
CONNECTOR
ELECTRICAL CONNECTION
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
L#
CIRCUIT GROUPING
DESIGNATION
1
2
C
TURN SW
9G-5589
00117-2930
START AID
SOLENOID
123-8773
26
604-OR
YY
RIGHT
TURN
103-YL-14
J1
P1
J2
537-GN
11
15
20
2
9
14
35
3
4
21
33
39
27
17
5
36
30
31
37
38
32
26
16
34
6
28
22
10
19
7
13
12
201-BK
799-WH
707-PU
818-BR
819-GY
250-BK
820-BU
NNN
E
D
C
B
A
799-WH
819-GY
410-WH
820-BU
818-BR
250-BK
L12
7
202-BK
L
CONN 5
A
A
A
BK-18
REVERSE
SUPP
STEER
32
21
L64
L64
L17
F975-OR-18
BK-18
MONITOR
ACTION
200-BK-18
GN-18
LIGHTS ON
XMSN SPEED
10
216-BK
213-BK
BK-18
RETARDER
462-YL-18
HIGH
BEAM LAMP
110-2079
LEFT
TURN
SPEEDO LAMP
GROUND
+ BATTERY
661-GN-18
200-BK-18
614-PU
661-GN
662-YL
113-OR
200-BK
HARNESS CODE
HARNESS CODE
663-YL-18
GAGE LAMPS
201-BK-18
201-BK-18
C413-YL-18
C413-YL-18
E707-GN-18
SPEEDO/TACH
6V-6457
LAMPS (2)
7N-5876
614-PU-18
606-GY
BU
PU
710-GN
4
3
1
A
2
200-BK
2
10
C
251-BK
C
2
1
1
2
200-BK-18
614-PU-18
521-YL-14
M
BK
RD
201-BK
410-WH
L17
SS
138-GN
799-WH
GY-18
GN-18
WH-18
RD-18
PK-18
BK-18
PU-18
BU-18
YL-18
OR-18
BR-18
OPR PANEL
KEY SW
STER SW
GROUND
GROUND
+ BATTERY
ALTERNATOR
MAG SW
2
1
9
8
7
6
5
4
3
2
1
A
A
SUPPLEMENTAL
STEERING CONT
3E-5184
308-YL
728-BU
200-BK
403-GN
727-GN
417-GY
GY
PU
BR
RED
403-GN-18
WHITE
ORANGE
3
YELLOW
PINK
5
ABBREV COLOR
BLACK
GRAY
F718-BU-18
PURPLE
UNUSED
BROWN
DESCRIPTION
612-GY
SYMBOL
CONNECTOR
ELECTRICAL CONNECTION
C
B-15
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
1
860-PK
861-PU
251-BK
858-GY
859-YL
F975-OR-18
799-WH
138-GN
707-PU
B-10
891-BU
BRAKE AIR
PRESS SENSOR
9X-5272
100-4984
LAMPS (2)
7N-5876
MODULE +V
C
GROUND
998-BR
200-BK-18
MODULE CLOCK
7
635-BU
636-GN
BLADE, SPADE, RING,
OR SCREW TERMINAL
799-WH
251-BK
3
21
794-YL
MAIN POWER
RELAY (FRONT)
3E-5239
138-GN
105-BR-18
KEY
START SW
110-7887
29
C413-YL-18
200-BK
706-BR
202-BK
799-WH
SUPP
STER
BREAKER
9G-9487
F705-PK
2
85
86
ST
30
PRELUBRICATION RELAY
15
87a
Q
112-PU-12
F705-PK
709-OR
337-WH
522-WH-14
521-YL-14
NN
452-PU-18
201-BK
472-OR
201-BK
201-BK
1
MODULE DATA
A-3
C
BK-18
BK
200-BK
YL-18
L12
308-YL
PK
YL
123-WH-18
KEY BREAKER
9G-9487
ANALOG RET
OR
+V ANALOG
RD-00
WH
109-OR-12
SIGNAL
E707-GN-18
RD
GN
112-PU-12
15A
10A
10A
15A
DOME & STOP
LAMP
BREAKER
6N-8589
F714-PK-18
ALT BREAKER
3E-7294
113-OR
123-WH
132-PK
138-GN
176-OR
315-GN
TCS
PAY MON
ARC
START AID
BACKUP ALARM
10A
10A
10A
112-PU-12
112-PU-12
112-PU-12
10A
10A
10A
112-PU-12
112-PU-12
112-PU-12
ID CODE 4
122-BU
ALT
R
105A
BU
E708-PK-18
BU
BK
AIR DRYER
997-OR-18
121-YL
+
GREEN
993-BR-18
799-WH
10A
MAIN POWER
RELAY (REAR)
3E-5239
BLUE
15A
AIR CONDITIONER
BREAKER
6N-8589
FUSES
3K-8782
FUSE HOLDERS
4K-5122
102-BU-14
124-GN-14
10A
A746-PK-18
997-OR-18
635-BU
112-PU-12
636-GN
HEAD LAMP
BREAKER
6T-2662
10A
200-BK
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
Q
20
21
16
5
4
22
11
774-YL
L
775-BR
#
24
25
1
610-OR-14
202-BK
619-GN-14
L10
L3
L3
L3
1
9
8
6
7
15
14
539-BU
540-WH
121-YL
12
G
891-BU
773-GY
CIRCUIT GROUPING
DESIGNATION
2
RD
893-GN
RD
200-BK
308-YL
109-OR-12
251-BK
112-PU-12
767-WH
109-OR-12
308-YL
200-BK
24
23
YL-18
993-BR-18
13
10
135-BU
109-OR-4
18
2
5
H
CONN 16
A
13
19
16
22
21
8
7
11
15
9
4
6
14
2
12
25
10
18
17
23
20
3
24
1
MAIN POWER
RELAY (MID)
3E-5239
3
727-GN
462-YL
200-BK-8
101-RD-4
19
1
CIGAR
LIGHTER
9W-0335
129-PU
PK-18
200-BK
614-PU
SECONDARY
BRAKE SW
3E-2033
ZZ
ZZ
A
19
1
E750-PU
A751-YL-18
997-OR-18
614-PU
447-PK
606-GY
605-YL
604-OR
794-YL
C
202-BK
200-BK
A
123-6866
PAYLOAD MONITOR
OPERATOR DISPLAY
9X-6847
24V
ACCESSORY
OUTLET
9R-7941
A
A
CONN 32
J
612-GY
RESISTOR
125-9740
15
10
24
2
7
5
13
12
8
6
11
20
22
4
3
21
9
16
1
462-YL
A
CONN 14
202-BK
122-BU
101-RD-4
A
604-OR
5
R
CONN 4
CONN 3
150-RD-14
993-BR-18
200-BK
200-BK
10
450-YL-18
WH-18
GN-18
200-BK-14
F709-BU-18
F713-OR-18
BK-18
A747-GY-18
GROUND
LEVEL
SHUTDOWN SW
4D-1836
E794-YL-18
A751-YL-18
E793-BU-18
SHUTDOWN SIGNAL C
998-BR-18
F707-WH-18
998-BR
B
F975-OR-18
WH-18
BK-18
OR-18
A
C
A747-GY-18
F714-PK-18
ENGINE
OIL
PRESSURE
SENSOR
(UNFILTERED)
103-6092
B
GN-18
F716-WH-18
521-YL-18
H
102-BU
F715-PU-18
WH-18
893-GN-18
892-BR-18
F717-YL-18
F710-BR-18
F719-BR-18
UNUSED
F724-PU-18
610-OR-14
772-BR
767-WH
GN-18
202-BK
994-GY-18
Y
L
202-BK
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
280-BK
218-BK
217-BK
219-BK
202-BK
20
6
4
5
8
9
10
11
19
18
17
16
15
14
13
12
2
CCC
202-BK
767-WH
LOCKUP
SOLENOID
7X-1120
DOWN SHIFT
SOLENOID
7X-1120
GROUND
SIGNAL
+V
C
B
A
TRANSMISSION SW
118-8471
721-BR-18
722-WH-18
723-OR-18
724-PU-18
725-GN-18
726-BU-18
231-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
UP SHIFT
SOLENOID
7X-1120
2
2
2
1
1
1
Z Z Y
CONN 8
Y
Y
YY
TRANSMISSION
SPEED
SENDER
3E-6955
705-PK
704-GY
202-BK
202-BK
703-BU
J
H
A
B
C
D
E
I
F
G 231-BK
709-OR
710-GN
705-PK
704-GY
703-BU
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
202-BK
X
J
CONN 7
CONN 1
CONN 2
E
4
202-BK
1
2
3
WHEEL SPEED
SENSOR
3T-2469
WHEEL SPEED
SENSOR
3T-2469
X
X
SS
SS
RIGHT REAR
STRUT SENSOR
124-0328
LEFT REAR
STRUT SENSOR
124-0328
860-PK
861-PU
251-BK
799-WH
WH-18
BK-18
RD-18
SIGNAL
+V
GROUND
3
2
1
WH-18
BK-18
RD-18
SIGNAL
+V
GROUND
3
2
605-YL
202-BK
A
4 WAY
SOLENOID
9G-9988
767-WH
202-BK
4
769-BU
202-BK
767-WH
770-GN
5
7
9
1
799-WH
799-WH
B
BK-18
251-BK
251-BK
861-PU
860-PK
WH-18
614-PU
RD-18
BK-18
AIR
CONDITIONER
CLUTCH
SOLENOID
7N-4287
774-YL
775-BR
202-BK
202-BK
202-BK
773-GY
LH STOP/
TAIL LAMP
130-3453
RH STOP/
TAIL LAMP
130-3453
BK-18
RD-18
WH-18
B
C
A
135-5452
614-PU
614-PU
614-PU
AL
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
604-OR
604-OR
BK-18
1
L86
17
TURBO
OUTLET
PRESSURE
SENSOR
103-6091
12
605-YL
614-PU
200-BK
200-BK 612-GY
604-OR
606-GY
132-PK
BACK-UP
ALARM
123-6449
614-PU
T
S
612-GY
608-GN
RH BACKUP
LAMP
9X-7169
608-GN
LH BACKUP
LAMP
9X-7169
J
L3
L2
L2
L2
L2
L9
124-8837
768-OR
997-OR-18
2
202-BK
769-BU
201-BK
F975-OR
446-PU
447-PK
D
CONN 20
CONN 21
BBB
L17
L75
L11
426-BR
993-BR-18
TRANSMISSION
FILTER SW
9X-7781
201-BK
995-BU-18
213-BK
859-YL
858-GY
861-PU
860-PK
863-BU
864-BR
865-GY
NNN
CONN 26
H
3
F723-PK-18
337-WH
200-BK
150-RD-14
201-BK
WITH TCS AND
W/O PAYLOAD MONITOR
CONNECT WIRE AS. EEE
TO HARNESS A
ON
116-9303
01
SS
SS
RIGHT FRONT
STRUT SENSOR
124-0328
LEFT FRONT
STRUT SENSOR
124-0328
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
WH-18
BK-18
OR-18
OFF
MODULE LOAD
OR-18
522-WH-14
B
513-0R-14
BK-18
116-9306
BK-18
109-OR-4
PAYLOAD
MONITOR
GREEN
LAMP
8T-9684
BULB
8T-9749
PAYLOAD
MONITOR
RED
LAMP
8T-9683
BULB
8T-9749
635-BU
799-WH
799-WH
636-GN
2
2
1
1
BK
BK
RD
RD
SS
SS
998-BR-18
200-BK-14
200-BK-14
SHUTDOWN SIGNAL D
116-9307
120-9288
SOLENOID 3 POWER
118-2891
118-6751
SOLENOID 2 POWER
SOLENOID 1 POWER
AFTERCOOL TEMP
ATMOSPHERIC PRESS
R TURBO INLET
COOLANT TEMP SIG
L TURBO INLET
ANALOG RETURN
+V ANALOG SUPPLY
ENGINE SPEED
200-BK-14
8
200-BK-14
611-PU-14
619-GN-14
200-BK-14
WH-18
BK-18
OR-18
SIGNAL
+V TIMING
DIGITAL RET
C
998-BR-18
L9
L7
L7
2
200-BK-14
200-BK-14
998-BR-18
+V TIMING
DIGITAL RETURN
OIL PRESS (FLTR)
BOOST PRESSURE
XXX
200-BK
00
2
200-BK-14
C-4118-7952
L7
BK-18
23
200-BK-14
PARK-TURN
LAMP
129-5688
WH-18
RD-18
PARK-TURN
LAMP
129-5688
WH-18
RD-18
T
L1
L1
L1
L1
ZZZ
200-BK-14
LOW BEAM
HEAD LAMP
9X-7169
LOW BEAM
HEAD LAMP
9X-7169
HI BEAM
HEAD LAMP
9X-7170
HI BEAM
HEAD LAMP
9X-7170
B
A
540-WH
614-PU
L8
L8
L8
T
T
T
539-BU
614-PU
611-PU-14
619-GN-14
1
200-BK
337-WH
RD-00
RD-00
H
PRELUBE
RELAY
3E-0154
2
1
RD-00
ZZZ
CONN 29
E729-GN
1
337-WH
998-BR
1
2
136-2197
118-0290
FFF
01
00
BODY
RAISE SW
8C-5681
BK
251-BK
337-WH
PAYLOAD
MONITOR
CONTROL
9X-6846
T
C
NN
CONN 15
472-OR
200-BK
454-GN
PU
866-PK
+V
GROUND
E708-PK-18
118-6675
EE
YY
101-RD-4
BK-4
7
109-OR-4
YY
RD-00
462-YL
AA
LL
109-OR-4
S
A701-GY-18
A702-PU-18
A703-BR-18
A704-GN-18
867-PU
F716-WH-18
F715-PU-18
RD-18
BK-00
A705-BU-18
BK-00
522-WH-18
BK-00
BK-00
A706-GY-18
BK-00
200-BK
H
ZZ
Y
N
C414-BU-18
TO ENG
BLOCK
TO
FRAME
A707-PU-18
H
L8
A708-BR-18
F726-YL-18
317-YL-18
F727-BU-18
F728-BR-18
F729-GN-18
F729-GN-18
996-GN-18
C
999-WH-18
997-OR-18
993-BR-18
994-GY-18
996-GN-18
998-BR-18
MODULE LOAD
117-0035
MODULE DATA
MODULE CLOCK
GROUND
MODULE +V
C414-BU-18
RO-18
BK-18
GN-18
WH-18
HH
117-2931
522-WH
513-OR
C
123-6867
OR-18
02
K
995-BU-18
BK-18
YL-18
6G-9462
F713-OR-18
200-BK-14
F721-GY-18
GROUND
HEATER GP 118-6383
VS
A700-OR-18
SIGNAL
YL-18
317-YL-18
BK-18
R
200-BK-14
F975-OR-18
893-GN-18
GN-18
317-YL-18
SIGNAL
403-GN-18
YL-18
C
T/C OUT SP
FAN CLUTCH SOL
1
A708-BR-18
A707-PU-18
A706-GY-18
A705-BU-18
A704-GN-18
F728-BR-18
F729-GN-18
F728-BR-18
F727-BU-18
F726-YL-18
L8
200-BK-18
F727-BU-18
A703-BR-18
A702-PU-18
F726-YL-18
A701-GY-18
CYLINDER
HEAD
SOL 8
CYLINDER
HEAD
SOL 7
C
CYLINDER
HEAD
SOL 6
CYLINDER
HEAD
SOL 5
CYLINDER
HEAD
SOL 4
CYLINDER
HEAD
SOL 3
ENG SPEED
2
BODY UP SW
2
999-WH-18
799-WH
636-GN
CYLINDER
HEAD
SOL 2
858-GY
251-BK
859-YL
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 THE XMSN SHIFTER IN NEUTRAL.
(116-4597 CHG00)
858-GY
CYLINDER
HEAD
SOL 1
1
CONN 38
CONN 39
CONN 40
CONN 41
CONN 42
CONN 43
CONN 44
CONN 45
481-PK-18
NOTE
727-GN
452-PU-18
450-YL-18
A746-PK-18
998-BR-18
C
26
3
14
9 8 7
9 8 7
15A
6 5 4
6 5 4
3 2
1
F
E
D
3 2
1
C
B
A
NOTE B: NOT USED ON MACHINES WITH AIR START
NOTE C: USED ON MACHINES WITH AIR START ONLY
NOTE G: USED ON MACHINES WITHOUT A/C FAN PRESS SW
THIS SCHEMATIC IS FOR THE 776D/777D TRUCK
D59139
TO MACHINE STRUCTURE
CATERPILLAR MONITORING
SYSTEM GROUND
CATERPILLAR MONITORING SYSTEM
GAUGE MODULE
ENGINE CONTROL
CATERPILLAR MON
SERVICE SW
CATERPILLAR MON SYS
GAUGE
CATERPILLAR
MON CLEAR SW
128-0869
AUTOMATIC ELECTRONIC
TRACTION AID (TCS)
K986-BR-18
30
ALL DASHED LINES ARE ATTACHMENTS.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
AUTOMATIC ELECTRONIC TRACTIONAID (TCS).
CATERPILLAR MONITORING SYSTEM.
PANEL LAMP CIRCUIT.
AUTOMATIC RETARDER CONTROL.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE ECM.
TURN SIGNAL CIRCUIT.
PAYLOAD MONITOR CIRCUIT.
START AID CIRCUIT.
TRANSMISSION CONTROL CIRCUIT.