Wire Description Wire Number
Wire Color
BATTERY+
727
GN
SEC STR RELAY COIL+
BU
RUNNING LAMP PWR
728
BU
SEC STR INTER RELAY COIL+
104
YL
PRODUCT LINK PWR (SWITCHED)
751
GN
CLUTCH 1 REVERSE
106
WH
LIFT/TILT POSITION SENSOR PWR
752
YL
CLUTCH 2 FORWARD
109
OR
ALTERNATOR PWR
754
BU
CLUTCH 3 FOURTH
110
GN
ENGINE ECM PWR (SWITCHED)
755
OR
CLUTCH 4 THIRD
112
PU
MAIN RELAY OUTPUT PWR
761
GY
LIFT POS SENSOR
RD
102
Power Circuits
Component Identifiers (CID¹) Module Identifier (MID²) ADEM III ECM (MID No. 036) CID
Component
Description
Control Circuits (Continued) T
Pressure Symbol
GN
FORWARD HORN PWR
762
YL
BUCKET/TILT POS SW
WH
AXLE OIL COOLER CLUTCH POWER
779
WH
QUICK COUPLER (ENGAGE SOL)
129
BU
START AID PWR
A701
GY
FUEL INJECTOR CYLINDER 1
130
GN
STOP LAMP/(BACKUP ALARM) PWR
A702
PU
FUEL INJECTOR CYLINDER 2
136
GN
SECONDARY STEERING PWR
A703
BR
FUEL INJECTOR CYLINDER 3
Component Location
Fuel Injector Solenoid #1
138
GN
PAYLOAD MONITOR SYSTEM PWR
A704
GN
FUEL INJECTOR CYLINDER 4
0002
Fuel Injector Solenoid #2
150
OR
ENGINE ECM PWR (UNSWITCHED)
A705
BU
FUEL INJECOTR CYLINDER 5
0003
Fuel Injector Solenoid #3
170
YL
PRODUCT LINK PWR (UNSWITCHED)
A706
GY
FUEL INJECTOR CYLINDER 6
Alarm - Backup
F-16
E-14, L-14
Sensor - Oil Pressure
B-14
E-13, L-13
0004
Fuel Injector Solenoid #4
174
PK
UNSWITCHED BUSS PWR
A746
PK
TURBO OUTLET PRESSURE
Alternator
C-18
D-13, L-13
Sensor - Trans. Lube Oil Temperature
E-9
D-11, M-11
Component
Schematic Location
Machine Location
Component
Schematic Location
0005
Fuel Injector Solenoid #5
175
PK
HOOD MOTOR PWR
A747
GY
ATMOSPHERIC PRESSURE
Arc Suppressor
D-18
D-13, L-13
Sensor - Trans. Output Speed
F-9
D-10, M-10
Fuel Injector Solenoid #6
177
OR
MAIN CIRCUIT BREAKER PWR
A751
YL
AFTER COOLER TEMPERATURE
Arc Suppressor 1
J-18
D-14, N-14
Sensor - Turbo Inlet Pressure
C-10
E-11, L-11
199
OR
0094
Fuel Pressure Sensor
200
BK
HOOD CONTROL PWR
F713
OR
TURBO INLET PRESS SENSOR
Batteries
A-18
C-14, K-14
Sensor - Turbo Outlet Pressure
B-14
E-12, M-12
F762
GY
START AID RELAY COIL+
Breaker - ADEM Engine Control
K-18
D-14, N-14
Solenoid - A/C Clutch
D-18
D-13, L-13
MAIN CHASSIS GND
F766
WH
DETENT ENABLE INTERLOCK
Breaker - Alternator
J-18
D-14, N-14
Solenoid - Axle Oil Cooler Clutch
K-13
E-13, L-13
Ground Circuits
0100
Engine Oil Pressure
201
BK
OPERATOR MONITOR GND
G764
PK
PARKING BRAKE SW (ON)
Breaker - Hood Actuator
K-18
D-14, N-14
Solenoids - Cylinder Head ( 1 - 6)
E-15
E-13, L-13
0110
Engine Coolant Temperature Sensor
229
BK
ENGINE ECM GND
H702
PU
REVERSING FAN RESET SWITCH (N.O.)
Breaker - Main
J-17
D-14, N-14
Solenoid - Ether Injection
I-11
D-12, L-12
0168
Electrical Power Supply
251
BK
PAYLOAD MONITOR SYSTEM GND
H703
YL
REVERSING FAN RESET SWITCH (N.C.)
Breaker - Running Lamp
K-18
D-14, N-14
Solenoid - Reversing Fan
G-18
C-14, L-14
0172
Inlet Air Temperature Sensor
299
BK
M I PL ECM GROUND
H704
PK
REVERSING FAN SOLENOID
Breaker - Unswitched Bus (Cab)
K-18
D-14, N-14
Solenoid - Ride Control 1
K-2
D-7, M-7
A274
BK
PRODUCT LINK ECM GND
H713
PK
LIFT PROPORTIONAL SOL
Control - ADEM III Engine
A-10
C-12, L-12
Solenoid - Ride Control 2
K-2
D-7, M-7
H714
OR
LOWER PROPORTIONAL SOL
Control - Product Link
D-6
E-12, M-12
Solenoids - Trans. Clutch
F-9
D-11, L-11
0174
Fuel Temperature Sensor
0253
Personality Module
0254
ADEM III ECM
304
WH
STARTER SOL START TERMINAL
H716
WH
I M PLEMENT ECM SOLENOID RETURN
Ground - Engine
A-8
D-10, M-10
Solenoid - Variable Speed Fan
D-12
D-13, L-13
0261
Engine Timing Calibration Sensor
306
GN
START RELAY COIL+
H717
BR
PILOT SOLENOID
Ground - Left Frame
H-15
D-10, M-10
Switch - A/C Pressure
D-18
D-13, L-13
Basic Machine Circuits
0262
5V DC Power Supply Sensor
307
OR
KEY SW(START)
H718
GY
BUCKET TILT POSITION SENS (SIG)
Ground - Right Frame
A-17
D-10, K-10
Switch - Axle Oil Cooler Temperature
K-13
C-11, L-11
0267
Engine Shutdown Switch
308
YL
MAIN POWER RELAY COIL+
H746
YL
VARIABLE SPD FAN SOLENOID+
Motor - Fuel Priming Pump
E-18
E-13, L-13
Switch - Brake Oil Pressure
C-6
D-9, K-9
0268
Check Programmable Parameters
317
YL
START AID SOLENOID+
H747
BR
VARIABLE SPD FAN SOLENOID-
Motor - Starter
C-18
C-12, L-12
Switch - Coolant Flow
E-16
D-12, L-12
0273
Turbo Outlet Pressure Sensor
321
BR
BACKUP ALARM
H795
PK
ENGINE ECM (SENSOR/SW RETURN)
Motors - Front Washer
B-7
D-9, K-9
Switch - Disconnect
A-17
D-13, L-13
GY
FORWARD HORN
J700
BR
ENGINE RETARDER SOL CYL 1
Relay - Ether Injection
I-16
D-11, M-11
Switch - Engine Oil Level
E-16
D-12, L-12
0274
Atmospheric Pressure Sensor
322
0291
Engine Cooling Fan Solenoid
326
PU
FUEL PRIMING PUMP
J701
GN
ENGINE RETARDER SOL 3
Relay - Main
J-18
D-14, N-14
Switch - Front Axle Temperature
J-1
C-6, M-6
0296
Tranmission ECM
397
OR
HOOD MOTOR LOWER
J702
BK
ENGINE RETARDER SOL COMMON
Relay - Start
I-18
D-14, N-14
Switch - Fuel Priming Pump
D-18
E-13, L-13 C-14, N-14
0320
Speed/Timing Sensor
398
BU
HOOD MOTOR RAISE
A893
OR
FUEL PRIMING PUMP MOTOR-
Sender - Fuel Level
L-7
D-9, N-9
Switch - Ground Level Shutdown
L-14
0342
Secondary Engine Speed Sensor
A300
GN
HOOD CONTROL LOWER
G828
WH
SENSOR PRESSURE +5V
Sensor - Atmospheric Pressure
B-14
E-12, M-12
Switch - Hydraulic Oil Level
A-6
B-9, J-9
0485
Engine Fan Reversing Solenoid
A301
WH
HOOD CONTROL RAISE
G829
GN
SENSOR PRESSURE COMMON
Sensor - Cam Shaft Speed Timing
A-15
E-13, L-13
Switch - Lift Kickout
L-2
D-7, M-7
0545
Ether Start Relay
0562
CAT Monitoring System
1582
Trans Lube Oil Temperature Sensor
403
GN
1589
Turbo Inlet Pressure Sensor
416 417
A307
THROTTLE PEDAL POS SENS
G833
PK
ENGINE TEMP SENSOR COMMON
Sensor - Coolant Temperature
C-14
E-13, M-13
Switch - Park Brake Pressure
C-6
D-9, K-9
G850
BU
AIR INLET HEATER RELAY COIL+
Sensor - Coolant Level
F-18
C-14, L-14
Switch - Rear Axle Temp
K-13
C-11, L-11
ALTERNATOR (R) TERMINAL
G856
WH
TDC PROBE+
Sensor - Crank Shaft Speed Timing
B-14
D-13, L-13
Switch - Supplemental Steering Pressure
L-6
D-9, N-9
OR
SEC STR PRESS SW (N/O)
G857
YL
TDC PROBE-
Sensor - Fuel Pressure
C-15
E-13, L-13
Switch - Tilt Kickout
K-2
D-7, M-7
GY
PRIMARY STR PRESS SW (N/O)
J843
BK
ENGINE ECM ANALOG SENSOR RTN
Sensor - Fuel Temperature
A-14
E-13, L-13
Switch - Trans Oil Level
G-9
C-12, L-12
419
YL
PARKING BRAKE SW (OFF)
J844
GY
ENGINE ECM ANALOG SENS 5VOLTS
Sensor - Hydraulic Oil Temperature
A-6
D-9, K-9
Switch - Trans Filter Bypass
F-8
E-11, L-11
426
BR
XMSN FILTER BYPASS SWITCH
900
PU
CLUTCH 5 SECOND
Sensor - Intake Manifold Air Temp
B-14
E-12, M-12
BU
AIR FILTER RESTRICTED IND
901
WH
CLUTCH 6 FIRST
Monitoring Circuits
Product Link ECM (MID No. 122) CID
GY
Component
0168
Electrical Power Supply
430
0254
Electronic Control Module (Product Link)
432
PK
BRAKE OIL PRES SWITCH (ON)
944
OR
CAT DATA LINK+
Sensor Power Supply
442
GY
HYD TANK OIL TEMP SENSOR
945
BR
CAT DATA LINK-
Alternator R-Terminal Signal
443
YL
TC OUTLET TEMP SENSOR
953
GY
M I PLEMENT ECM SENSOR RTRN
447
PK
FUEL LEVEL SENSOR
962
OR
TRANSMISSION ECM SENSOR RTRN
450
YL
ENGINE ECM (ENGINE SPD)
975
WH
XMSN ECM SOLENOID/INDICATOR RTN
453
PK
SEC STR PRESS SW (N/O)
976
OR
RIDE CONTROL ON SOLENOID
484
YL
PRIMARY STR PRESS SW (N/C)
994
GY
OIL PRESSURE (FILTERED)
496
WH
HYD TANK OIL LEVEL SENS
995
BU
COOLANT TEMPERATURE
E416
PU
LIFT CYL HEAD END PRESS SENSOR
A982
BR
ENGINE ECM THROTTLE/IND 8VOLTS
E455
BR
HYDRAULIC FILTER BYPASS SW
C967
BU
N I LET AIR TEMPERATURE
F421
YL
FUEL TEMPERATURE
C991
PK
FUEL PRESS SENSOR
G454
PK
PUMP DRIVE OIL TEMPERATURE
E900
WH
XMSN OUTPUT SPD SENS LEADING+
G479
WH
SERVICE ENGINE INDICATOR
E901
GN
XMSN OUTPUT SPD SENS LEADING-
G485
BU
FRONT AXLE OIL TEMP SW
E906
OR
XMSN OUTPUT SPD SENS TRAILING+
G486
GN
0269 1251
¹ The CID is a diagnostic code that indicates which circuit is faulty. ² The MID is a diagnostic code that indicates which electronic control module diagnosed the fault.
REAR AXLE OIL TEMP SW Accessory Circuits
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.
E907
GY
XMSN OUTPUT SPD SENS TRAILING-
E908
BR
XMSN INPUT SPD SENSOR+ XMSN INPUT SPD SENSOR-
PU
FRONT WASHER PUMP+
E909
WH
WH
REAR WASHER PUMP+
E919
YL
AUX LIFT PROPORTIONAL SOL
513
OR
A/C CLUTCH SOLENOID+
E920
BR
AUX LOWER PROPORTIONAL SOL
521
YL
A/C SELECT SW (A/C POSTION)
E921
PK
RACKBACK PROPORTIONAL SOL
522
WH
A/C CLUTCH SOLENOID-
E922
GN
DUMP PROPORTIONAL SOL
C529
GY
LIFT CYL HE PRESS SENS
E963
BK
CRANK RPM SENSOR-
C530
BU
E964
WH
CRANK RPM SENSOR+
E965
BU
CAM RPM SENSORCAM RPM SENSOR+
603
PK
ROTARY BEACON
E966
YL
604
OR
STOP LAMP
K933
GN
OPERATOR MONITOR SENSOR PWR
605
YL
LH TURN LAMPS
K977
PK
XMSN OIL TEMP SENSOR
606
GY
RH TURN LAMPS
L983
WH
FUEL INJECTOR RTN CYL 1-2
608
GN
REAR FLOOD LAMPS
L984
OR
FUEL INJECTOR RTN CYL 3-4
611
PU
HEAD LAMP (HIGH)
L985
YL
FUEL INJECTOR RTN CYL 5-6
612
GY
BACKUP LAMP
N939
GN
RIDE CONTROL AUTO SOLENOID
614
PU
LICENSE PLATE/RH TAIL/DASH LAMPS
P976
BR
QUICK COUPLER RELEASE SOLENOID
615
YL
FORWARD CAB FLOOD LAMPS
R971
YL
XMSN LUBE OIL TEMP SENSOR
617
BR
LH TAIL/CLEARANCE LAMPS
R974
OR
START AID SWITCH
619
GN
FWD FLOOD/LO BEAM LAMPS
X918
PU
GND LEVEL SHUTDOWN SW (N/O)
X919
WH
GND LEVEL SHUTDOWN SW (N/C)
709
OR
Control Circuits XMSN ECM SENS/IND (+8VOLTS)
Schematic Location
Connector Number
Machine Location
CONN 1
F-6
E-10, L-10
CONN 2
H-6
E-10, L-10
CONN 3
I-6
E-10, L-10
CONN 4
J-6
E-10, L-10
CONN 5
G-6
E-10, L-10
D-17
D-12, L-12
A-14
D-12, L-12
CONN 6 CONN 8
B-14
C-7, L-7
Failure mode not identifiable.
CONN 9
C-14
C-11, L-11
12
Bad device or component.
CONN 10
D-14
E-12, L-12
13
Out of calibration.
CONN 11
G-14
C-15, L-15
14
Parameter failures.
CONN 12
K-13
C-10, L-10
15
Parameter failures.
CONN 13
K-14
C-10, L-10
16
Parameter not available.
Part No.
Resistance (Ohms)¹
CONN 14
K-13
C-13, M-13
17
Module not responding.
118-9701
Solenoid:
Reversing Fan
13.8 ± 0.4
CONN 15
H-12
E-10, L-10
18
Sensor supply fault.
128-7991
Solenoids:
Fuel Injectors
1.06 ± 0.05
CONN 16
G-8
D-13, L-13
19
Condition not met.
141-9676
Solenoid:
A/C Compressor Clutch
17.6 ± 0.6
CONN 17
A-6
C-9, K-9
20
Parameter failures.
147-5399
Solenoids:
Transmission Clutch
8.15 ± 0.6
CONN 18
B-6
D-9, K-9
148-2350
Solenoid:
5.0 ± 0.3
CONN 19
D-7
C-12, L-12
Empty: 95 ± 3.0 Full: 1.75 ± 1.75
CONN 20
L-7
D-9, N-9
CONN 21
K-4
D-7, L-7
CONN 22
J-2
C-6, L-6
CONN 23
K-2
D-7, L-7
Resistor, Sender and Solenoid Specifications
168-6452
Solenoid:
174-4913 3E-6333
Axle Oil Cooler Clutch
9.4 ± 5.0
Solenoids:
Ride Control 1 Ride Control 2
8.7 ± 0.4
Solenoid:
Ether Injection
6.0
Event Code
Part No.
Function
High Engine Coolant Temperature Derate
E017
High Engine Coolant Temperature Warning
E025
High Inlet Air Temperature Derate
E027
High Inlet Air Temperature Warning
E039
Low Engine Oil Pressure Derate
E053
Low Fuel Pressure Warning
E096
High Fuel Pressure
E100
Low Engine Oil Pressure Warning
E190
Engine Overspeed Warning
E272
Inlet Air Restriction Warning
Actuate
Deactuate
275 to 1750 kPa¹ (39.9 to 253.8 psi)
A/C (High / Low) Pressure
134-6054
Coolant Flow
362 ± 2.9 mN .141 ± .10 ozf
303 mN 1.1 ozf
Normally Open
155-8998
Axle Oil Cooler Temperature
65 ± 3.0°C (149 ± 5.4°F)
58°C Min (136.4°F Min)
Normally Open
174-4312
Parking Brake Pressure
8270 kPa MAX (1200 psi MAX)
6890 ± 345 kPa (1000 ± 50 psi)
A-B, Normally Open A-C, Normally Closed
Brake Oil Pressure
10700 kPa MAX (1550 psi MAX)
8960 ± 537 kPa (1300 ± 79 psi)
A-B, Normally Open A-C, Normally Closed
100 ± 3.0°C (212 ± 5.4°F)
92°C Min (197.6°F Min)
Normally Closed
115 ± 3.0°C (239 ± 5.4°F)
106°C Min (222.8°F Min)
Normally Closed
177-2313 177-2314 230-5771
Front Axle Monitor Oil Temperature Rear Axle Monitor Oil Temperature Supplemental Steering Pressure
1200 kPa MAX (174 psi MAX)
Normally Open ²
700 ± 100 kPa (101.5 ± 14.5 psi)
A-C, Normally Closed B-C, Normally Open
¹ 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 position at the contacts of the harness connector.
L-C12 3E-5179
L-C12 3E-5179
1
Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...).
Part Number: for Connector Receptacle
Receptacle Pin or Socket Number
1 2
Deutsch connector: Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.
1 2
Sure-Seal connector: Typical representation of a Sure-Seal connector. The plug and receptacle contain both pins and sockets.
5A Fuse (5 Amps)
9X-1123
Component Part Number
14
13
12
11
10
9
8
7
6
5
4
3
2
Title
Form Number 185-5294
SENR4130
Electric Starting Motor:
6V-0890
SENR3860
CAT Monitoring System:
SENR1394
Transmission Control System:
RENR6008
O
O
N
N
M
M
L
L
K
K
J
J
I
I
H
H
G
G
F
F
E
E
D
D
C
C
B
B
A
A
Product Link ECM:
RENR5885
15
14
13
12
11
Wire Gauge Wire Color
1
Related Electrical Service Manuals Alternator:
Harness identification code: This example indicates wire group 325, wire 135 in harness "AG".
Printed in U.S.A.
Contact Position
114-5333
175-3244
Harness Identification Letter(s): (A, B, C, ..., AA, AB, AC, ...)
AG-C4 111-7898
Off Machine Switch Specification
Condition
E015
Timing Cal Probe
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.
¹ At room temperature unless otherwise noted.
Event Codes ADEM III ECM
Harness and Wire Symbols Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).
Connector Location
11
Fuel Level
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. Magnetic Latch Solenoid: A magnetic latch solenoid is an electrical component that is activated by electricity and held latched 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.
15
Abnormal update.
Sender:
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.
AXG1-UP
© 2012 Caterpillar, All Rights Reserved
Abnormal rate of change.
157-8858
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.
T
Volume 1 of 2: Chassis Wiring
9
Varible Speed Fan
980G Series II Wheel Loader - Underground Mining Electrical System
325-AG135 PK-14
10
¹The FMI is a diagnostic code that indicates what type of failure has occurred.
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.
Part Number: for Connector Plug
CONN 7
Component Description
Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.
Plug
506
LIFT POSITION SENSOR
Ground (Wired): This indicates that the component is connected to a grounded wire. The grounded wire is fastened to the machine.
2
507
Lighting Circuits
Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.). No circle indicates that the wire cannot be disconnected from the component.
Machine Location
0006
Throttle Sensor
Circuit Breaker Symbol
Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates that the component has screw terminals and a wire can be disconnected from it.
0001
ECM 8V DC Supply
Flow Symbol
Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it.
123
0041
Level Symbol
Symbols and Definitions
114
0091
Temperature Symbol
10
9
8
7
6
5
4
3
2
1
(Dimensions: 39 inches x 28 inches)
101
Description
30 Page,
Wire Color
Symbols
RENR9858-02 VOL 1 of 2
Wire Number
Harness And Wire Electrical Schematic Symbols
RENR9858-02 August 2012