CAT 994F Wheel Loader Electrical System Schematic Manual Vol 1& 2 - PDF DOWNLOAD

Page 1

42

Component Location - Volume 2 Machine Location*

B-17

H-17, P-17

ALARM - AUDIBLE BACKUP

J-15

I-28, Q-28

1

Injector Cylinder 1

ALARM - AUDIBLE L BACKUP

K-15

I-28, T-28

2

Injector Cylinder 2

ALTERNATOR - 1

G-17

33

3

Injector Cylinder 3

ALTERNATOR - 2

F-17

45

4

Injector Cylinder 4

ARC SUPRESSOR - A/C

I-17

32

5

Injector Cylinder 5

BATTERIES

K-12

H-18, O-18

6

Injector Cylinder 6

BATTERIES

K-12

H-18, P-18

7

Injector Cylinder 7

BATTERIES

K-12

H-18, U-18

8

Injector Cylinder 8

BLOCK - FUSE (240 VAC)

E-12

24

9

Injector Cylinder 9

BLOCK - JUNCTION

H-12

H-18, V-18

10

Injector Cylinder 10

BLOCK - TERMINAL (240VAC)

C-12

23

11

Injector Cylinder 11

BREAKER - ADEM

G-11

H-18, V-18

12

Injector Cylinder 12

BREAKER - ALTERNATOR 1

H-11

H-18, V-18

13

Injector Cylinder 13

BREAKER - ALTERNATOR 2

G-11

H-18, V-18

14

Injector Cylinder 14

BREAKER - ENGINE PRELUBE

G-11

H-18, V-18

15

Injector Cylinder 15

BREAKER - KEY

H-11

H-18, V-18

16

Injector Cylinder 16

BREAKER - MAIN

H-11

H-18, V-18

91

Throttle Position

BREAKER - RUNNING LAMPS

H-11

H-18, V-18

101

Crankcase Pressure

CLUTCH - A/C COMPRESSOR

I-17

44

E-18

20

CID

Component

Engine Coolant Temperature

CONTROL - ADEM

168

System Voltage

CONTROL - IMPLEMENT

F-6

H-18, V-18

190

Engine Speed signal

CONTROL - TRANSMISSION

G-6

H-16, V-16

253

Personality Module

CONTROL - VIMS

J-6

H-18, V-18

261

Engine Timing calibration

DIODES - RELAY

L-9

H-16, V-16

262

5 Volt Sensor DC Power Supply

FUSE PANEL

K-11

H-18, V-18

263

Digital Sensor supply

HEATER - ENGINE OIL 1 (240VAC)

C-11

49

267

Incorrect Engine Shutdown Switch inputs

HEATER - ENGINE OIL 2 (240VAC)

C-11

28

268

Check Programmable Parameters

HEATER - JACKET WATER 1 (240VAC)

D-11

55

273

Turbo Outlet Pressure

HEATER - JACKET WATER 2 (240VAC)

D-11

19

274

Atmospheric Pressure

HEATER - JACKET WATER 3 (240VAC)

D-11

47

275

Right Turbo Inlet Pressure

HEATER - JACKET WATER 4 (240VAC)

D-11

59

276

Left Turbo Inlet Pressure

HOURMETER

J-18

C-24, W-24

291

Engine Cooling Fan Solenoid

INDICATOR - START LOCKOUT

J-18

C-24, W-24

296

Unable to communicate with Transmission ECM

INJECTOR - 1

G-18

1

298

Incorrect Service Brake Pedal Switch inputs

INJECTOR - 10

F-17

10

338

Pre-Lube Relay

INJECTOR - 11

F-18

11

542

Unfiltered Engine Oil Pressure

INJECTOR - 12

E-17

12

543

Filtered Engine Oil Pressure

INJECTOR - 13

F-18

13

544

Engine Cooling Fan Speed

INJECTOR - 14

E-17

14

546

Ether Hold Relay

INJECTOR - 15

E-18

15

800

Unable to communicate with VIMS

INJECTOR - 16

E-17

16

827

Left Exhaust Temperature

INJECTOR - 2

F-17

2

828

Right Exhaust Temperature

INJECTOR - 3

G-18

3

829

Rear Aftercool Temperature

INJECTOR - 4

F-17

4

1495

Injector Trim Codes Not Programmed

INJECTOR - 5

F-18

5

Engine Oil Renewal System

INJECTOR - 6

F-17

6

INJECTOR - 7

F-18

7

110

2271

Vital Information Management System (VIMS) ECM (MID No. 049) CID

Component

0041

8 Volt DC Supply

0075

Steering Oil Temperature Sensor

0096

Fuel Level Sensor

0127

Transmission Oil Pressure Sensor

0145

12 Volt DC Supply

0171

Ambient Air Temperature Sensor

0248

Cat Data Link

0267

Remote Shutdown Input

0271

Action Alarm

0296

Transmission Control

0324

Warning Lamp (Action)

0350

Lift Linkage Position Sensor

0364

Lift Cylinder Head Pressure Sensor

0371

Operator Horn Solenoid

0425

Front Brake Oil Pressure Sensor

0426

Rear Brake Oil Pressure Sensor

0427

Front Axel Oil Temperature Sensor

0428

Rear Axel Oil Temperature Sensor

0429

Steering Main Pump Oil Pressure Sensor

0430

Steering Pilot Oil Pressure Sensor

0434

Hydraulic Pilot Oil Pressure Sensor

0436

Torque Converter Oil Pressure Sensor

0457

Brake Oil Temperature Sensor

0458

Tilt Cylinder Rod Pressure Sensor

0590

Engine Control Module

0596

Implement Control

0600

Hydraulic Oil Temperature Sensor

0650

Harness Code

0767

Fixed Implement Pump Oil Pressure Sensor

0809

Speedometer/Tachometer (No. 1)

0810

Speedometer/Tachometer (No. 2)

0811

Gauge Cluster (No. 1)

0812

Gauge Cluster (No. 2)

0813

Gauge Cluster (No. 3)

0814

Gauge Cluster (No. 4)

0815

Message Center (No. 1)

0816

Message Center (No. 2)

0817

ECM Internal Backup Battery

0819

Display Data Link

0820

Keypad Data Link

0822

LCD Back light Power Supply

0823

Service Lamp

0826

Torque Converter Oil Temperature Sensor

0849

System Air Pressure Sensor

0860

Front Pump Drive Oil Temperature Sensor

CID

INLET EXHAUST TEMP SENSOR

EFPP/ALTERNATOR GND

55 JACKET WATER

52

HEATER 1 (240 VAC)

LAMP - LH PLATFORM FLOOD

B-4

H-16, W-16

LAMP - R STOP TAIL

J-15

LAMP - RH BUCKET FLOOD

B-5

F-8, S-8

LAMP - RH ENGINE FLOOD

K-15

H-25, Q-25

LAMP - RH PLATFORM FLOOD

B-17

H-16, N-16

LAMP - RH REAR FLOOD OR HID

J-15

H-28, P-28

LAMP - RH RUNNING

C-4

I-10, O-10

LAMP - RH TOWER FLOOD 1

C-4

I-10, O-10

B-4

I-10, O-10

LAMP - VIMS

K-15

G-28, U-28

LED - OIL RECOVERY SYS TANK FULL IND

A-18

C-16, P-16

LED - TRANSMISSION LOCKOUT IND

J-18

C-24, W-24

MOTOR - ELECT FUEL PRIMING PUNP

J-17

50

MOTOR - PRELUBRICATION

J-14

D-25, S-25

RELAY - BACKLIGHT 1

K-8

H-16, V-16

RELAY - BACKUP ALARM

I-8

H-16, V-16

RELAY - BUCKE FLOOD

I-8

H-16, V-16

CONNECTOR 4O

36

RESISTOR 1 FAN SPEED

35

ALTERNATOR 1 A/C ARC SUPRESSOR

31

A/C REFRIGERANT SW

30

OIL PRESURE SENSOR (UNFILTERED)

I-8

H-16, V-16

RELAY - PRELUBE PRIMING

G-8

H-16, V-16

RELAY - ROPS FR

J-8

H-16, V-16

RELAY - ROPS HID 1

H-8

H-16, V-16

RELAY - ROPS HID 2

F-8

H-16, V-16

RELAY - ROPS RR

J-8

H-16, V-16

RELAY - START

K-8

H-16, V-16

RESISTOR - 1 FAN SPEED

G-18

35

RESISTOR - 2 CAN DATA LINK

H-16

22

SENSOR - AFTERCOOLER TEMP

H-17

57

SENSOR - AMBIENT AIR TEMPERATURE

K-14

H-16, S-16

SENSOR - ATMOSPHERIC PRESSURE

I-18

21

29 25 OIL PRESSURE

ENGINE OIL HEATER 2 (240 VAC)

SENSOR (FILTERED)

28

LOW OIL/VMS ADD OIL SWITCH

27

26 VERY LOW OIL SWITCH

Component

Schematic Location

Machine Location

K-18

T-40, C-40

SENSOR - AUTOLUBE PRESS

A-4

H-17, U-17

ACTUATOR - WATER VALVE

SENSOR - AXEL TEMPERATURE (REAR)

A-18

C-20, S-20

ALARM - AUDIBLE FOR CAES

B-9

E-38, Q-38

SENSOR - BRAKE C00LING OIL TEMP

B-15

H-20, Q-20

BATTERY - BACKUP FOR CAES

J-3

L-41, U-41

H-2

M-41, Q-41

SENSOR - COOLANT TEMPERATURE

H-17

39

BEACON 1

SENSOR - CRANKCASE PRESSURE

I-18

52

BEACON 2

H-2

M-41, W-41

CAMERA - REAR VIEW

E-13

I-27, R-27

SENSOR - FRONT AXEL OIL TEMP

A-6

C-11, S-11

SENSOR - FRONT PUMP DRIVE OIL TEMP

B-7

H-14, S-14

CIGAR LIGHTER - 12V

G-7

E-37, Q-37

D-8

G-37, Q-37

SENSOR - FUEL LEVEL

K-14

D-26,T-26

CONTROL - CAES NAVIGATOR

SENSOR - IMPELLER CLUTCH PRESS

D-15

F-19, S-19

CONTROL GP - GATEWAY

I-4

E-40, Q-40

A-5

E-12, Q-12

CONTROL GP - STICK

J-12

E-35, V-35

A-6

E-9, S-9

CONVERTER - VOLTAGE

B-5

J-38, T-38

G-17

42

CONVERTER - VOLTAGE FOR CAES

L-3

K-36, O-36

G-11

E-33, U-33 G-33, S-33

SENSOR - LH TURBO INLET PRESSURE

H-18

40

DISPLAY - GAGE CLUSTER

SENSOR - MAGNETIC TACH

K-17

18

DISPLAY - MESSAGE CENTER

G-11

0138

Switch (Reduced Rimpull Selection)

SENSOR - PRIMARY CAM SPEED/TIMING

G-18

17

0168

Electrical System Voltage

SENSOR - RH TURBO INLET PRESSURE

H-17

43

LAMP - LADDER 1

D-4

L-18, T-18

0190

Speed Signal (Engine)

SENSOR - STEERING OIL TEMP

B-15

H-20, R-20

LAMP - LADDER 2

C-4

L-18, Q-18

0348

Switch (Transmission Lock)

SENSOR - TILT KICKOUT

A-5

H-7, R-7

LAMP - LH FRONT FLOOD 2

G-2

L-14, U-14

0378

Solenoid (Machine Autolube)

SENSOR - TIMING CAL PLUG

I-17

56

LAMP - LH FRONT ROPS FLOOD

G-2

L-14, U-14

0379

Pressure Sensor (Machine Autolube)

SENSOR - TORQUE CONV OIL TEMP

C-15

F-19, Q-19

LAMP - LH ROPS HID 1

H-2

L-14, U-14

0444

Magnetic Switch (Start Relay)

SENSOR - TORQUE CONV OUTPUT SPEED

D-15

F-19, S-19

LAMP - LH ROPS HID 2

H-2

L-14, U-14

0585

Speed Sensor No. 1 (Transmission Output )

SENSOR - TRANS SPEED 1

F-11

D-17, R-17

LAMP - PANEL 2

H-7

D-36, Q-36

D17, R-17

LAMP - PANEL 3

H-7

D-36, Q-36

H-7

D-36, Q-36

0590

Electronic Control Module (Engine)

0596

Electronic Control Module (Implement)

SENSOR - TURBO OUTLET PRESSURE

I-18

38

LAMP - PANEL 4

0603

Pressure Sensor (Torque ConverterImpeller Clutch)

SENSOR LIFT CYL HEAD END PRESS

B-8

E-14, T-14

LAMP - PANEL 5

H-7

D-36, Q-36

0623

Switch (Transmission Direction)

SENSOR LIFT POSITION

B-5

H-13, P-13

LAMP - PANEL 6

H-7

D-36, Q-36

0626

Switch (Steering/Transmission Lock)

SENSOR -RH TURBO IN EXHAUST TEMP

H-17

58

LAMP - PANEL 7

E-7

D-36, Q-36

0627

Pressure Switch (Parking Brake)

SOLENOID - AIR START VALVE

A-17

LAMP - RH FRONT FLOOD 2

G2

L-14, P-14

0650

Harness Code

SOLENOID - AUTOLUBE

A-4

H-17, U-17

LAMP - RH FRONT ROPS FLOOD

G-2

L-14, P-14

0670

Position Sensor (Torque Converter Pedal)

SOLENOID - CL1, REVERSE

F-13

G-16, S-16

LAMP - RH ROPS HID 1

F-2

L-14, P-14

0672

Speed Sensor (Torque Converter output)

SOLENOID - CL2, FORWARD

F-13

G-16, S-16

LAMP - RH ROPS HID 2

F-2

L-14, P-14

D-4

L-18, T-18

0673

Speed Sensor No. 2 (Transmission output)

SOLENOID - CL3, 3D GEAR

F-12

G-16, S-16

LAMP - ROPS LEFT REAR FLOOD

0678

Modulating Valve (Torque ConverterImpeller Clutch)

SOLENOID - CL4, 2D GEAR

E-13

G-16, S-16

LAMP - ROPS RH REAR FLOOD

D-4

L-18, Q-18

0679

Modulating Valve (Torque ConverterLockup Clutch)

SOLENOID - CL5, 1ST GEAR

E-12

G-16, S-16

LAMP ASSEMBLY - RH DASH

C-5

J-38, R-38

0800

VIMS Main Module

SOLENOID - ETHER VALVE 1

A-18

I-24, Q-24

LED - ACTION INDICATOR

D-11

E-33, U-33

E-11

E-33, U-33

1401

Modulating Valve (No. 1) (Transmission)

SOLENOID - ETHER VALVE 2

B-18

I-24, Q-24

LED - REDUCED RIMPULL INDICATOR

1402

Modulating Valve (No. 2) (Transmission)

SOLENOID - IMPELLER CLUTCH

D-15

F-19, S-19

LED - THROTTLE LOCK INDICATOR

G-11

E-33. S33

1403

Modulating Valve (No. 3) (Transmission)

SOLENOID - IMPLEMENT PUMP

B-7

F-14, S-14

LED - TORQ CONV LOCKUP INDICATOR

E-11

E-33, U-33

1404

Modulating Valve (No. 4) (Transmission)

SOLENOID - IMPLEMENT RAISE STOP

A-4

G-17, R-17

MONITOR - REAR VISION

B-11

G-37, R37

1405

Modulating Valve (No. 5) (Transmission)

SOLENOID - LH AIR HORN VALVE

B-17

H-17, N-17

MOTOR - BLOWER

J-18

C-40, U-40

Electronic Implement Control (MID No. 082)

SOLENOID - LOCKUP CLUTCH

D-15

F-19, S-19

MOTOR - FR WASHER

K-18

B-41, S-41

SOLENOID - LOWER KICKOUT CUSHION

A-4

G-17, R-17

MOTOR - FRONT WIPER

B-11

D-32, T-32

SOLENOID - OIL RENEWAL VALVE

K-17

51

MOTOR - HVAC PRECLEANER

C-13

J-40, S-40

MOTOR - LH WASHER

L-18

B-41, S-41

D-13

K-34, W-34

168

Electrical System Voltage

SOLENOID - RH AIR HORN VALVE

B-17

H-17, N-17

296

Transmission Control

SOLENOID - ROCKFORD FAN

I-17

37

MOTOR - LH WIPER

350

Lift Linkage Position Sensor

STARTER - ELECTRIC STARTERS 1 & 2

J-12

60

MOTOR - REAR WIPER

D-7

E-40, T-40

359

Lift Kickout Detent Solenoid

SWITCH - OIL RECOVERY TANK LOW

A-16

I-22, R-22

MOTOR - RH WASHER

K-18

B-41, S-41

360

Lower Kickout Detent Control Valve Solenoid

SWITCH - A/C REFREGERENT

J-17

30

MOTOR - RH WIPER

C-13

K-34, Q-34

361

Bucket Kickout Detent Control Valve Solenoid

SWITCH - BRAKE C00LING OIL LEVEL

C-15

I-20, Q-20

MOTOR - RR WASHER

L-18

B-40, S-40

365

Lift, Lower and Bucket Kickout Set Switch

SWITCH - COOLANT FLOW

I-17

46

RADIO - CAES

L-3

L-36, O-36

590

Cat Data Link Communication with Engine ECM

SWITCH - DISCONNECT

L-12

I-20, U-20

RADIO - ORBCOMM

I-16

K-35, Y-35

591

Electrically Erasable Programmable Read Only Memory

SWITCH - ELECT FUEL PRIMING PUMP

G-17

41

RECIEVER - CAES

K-3

L-41, T-41

650

Harness Code

SWITCH - FR CTR IMPL CASE DRAIN

C-6

H-13, S-13

RESISTOR - CAN TERMINATION RES 1

J-1

K-40, T-40

767

Implement Pump Oil Pressure Sensor

SWITCH - FRONT PUMP DRIVE LUBE

B-7

H-14, S-14

RESISTOR - HVAC BLOWER RES

J-18

C-40, U-40

2330

Raise Limit Solenoid

SWITCH - FRONT TRANS FILTER BYPASS

E-15

H-18, T-18

RESISTOR - HVAC WATER VALVE RES 3

K-18

C-40, T-40

2331

Lower Kickout Cushioning Solenoid

SWITCH - FUEL FILTER DIFF PRESS

J-17

34

RESISTOR - WATER VALVE TEMP SEL

E-6

D-36, Q-36

2332

Implement Pump Solenoid

SWITCH - GROUND LEVEL SHUTDOWN

L-18

C-24, W-24

SENSOR - LH BRAKE PEDAL POSITION

E-11

C-33, U-33

¹ The CID is a diagnostic code that indicates which circuit is faulty.

SWITCH - GROUND LEVEL STAIR LAMP

K-18

C-24, W-24

SENSOR - THROTTLE POSITION

C-11

C-33, S-33

² The MID is a diagnostic code that indicates which electronic control module diagnosed the fault.

SWITCH - HOOD LAMP

L-18

C-24, W-24

SOLENOIDS - PILOT VALVE GP

K-11

E-35, R-35

SWITCH - IMPL PILOT FILTER BYPASS

B-8

H-14, S-14

SPEAKER - LEFT

B-5

J-38, U-38

SWITCH - IMPLEMENT OIL CLR FLTR BYPAS S

A-15

H-21, Q-21

SPEAKER - RIGHT

B-5

J-38, S38

SWITCH - IMPLEMENT TANK OIL LEVEL

A-6

F-11, S-11

SWITCH - BEACON

K-6

E-37, Q-37

SWITCH - LH IMPLEMENT CASE DRAIN

C-6

H-13, S-13

SWITCH - BLOWER

I-7

D-36, Q-36

SWITCH - LH STEERING CASE DRAIN

E-15

H-19, S-19

SWITCH - DUAL WIPER

J-7

D-36, Q-36

SWITCH - EITHER STARTING AID

K-6

D-36, Q-36

0

Data valid but above normal operational range.

SWITCH - LOW OIL/VMS ADD OIL

1

Data valid but below normal operational range.

SWITCH - OIL RECOVERY TANK FULL

A-16

H-22, R-22

SWITCH - FENDER ROPS HEADLAMP

F-6

D-37, Q-37

Data erratic, intermittent, or incorrect.

SWITCH - PARKING BRAKE POSITION

F-14

H-15, R-15

SWITCH - FRONT BRAKE ACCU PRESS

I-16

B-39, T-39

3

Voltage above normal or shorted high.

SWITCH - PARKING BRAKE PRESSURE

F-14

H-15, R-15

SWITCH - FRONT FLOOD LAMP

G-6

D-37, Q-37

4

Voltage below normal or shorted low.

SWITCH - REAR TRANS FILTER BYPASS

E-15

H-19, T-19

SWITCH - FRONT INTERMITTANT WIPER

I-7

D-36, Q-36

5

Current below normal or open circuit.

SWITCH - RH IMPLEMENT CASE DRAIN

C-6

H-13, S-13

SWITCH - HORN

L-12

E-35, R-35

6

Current above normal or grounded circuit.

SWITCH - RH STEERING CASE DRAIN

E-15

H-19, S-19

SWITCH - IGNITION KEY

H-7

D-36, Q-36

7

Mechanical system not responding properly.

SWITCH - RR CTR IMPL CASE DRAIN

C-6

H-13, S-13

SWITCH - LIFT, LOWER KICKOUT SET

H-6

D-36, Q-36

8

Abnormal frequency, pulse width, or period.

SWITCH - START LOCKOUT

K-18

C-24, W-24

SWITCH - PAYLOAD STORE

J-11

E-35, R-35

9

Abnormal update.

SWITCH - STEERING OIL LEVEL

C-15

I-20, S-20

SWITCH - REAR FLOOD LAMP

G-6

D-37, Q-37

10

Abnormal rate of change.

SWITCH - STEERING OIL CLR FLTR BYPASS

B-15

H-21, Q-21

SWITCH - REAR INTERMITTANT WIPER

J-7

D-36, Q-36

11

Failure mode not identifiable.

SWITCH - THERMOSTAT (240VAC)

C-11

48

SWITCH - REDUCED RIMPULL

E-7

E-37, Q-37

12

Bad device or component.

SWITCH - TRANSMISSION LOCKOUT

J-18

C-24, W-24

SWITCH - RH DASH LAMP

C-5

J-38, R-38

13

Out of calibration.

SWITCH - VERY LOW OIL

J-17

26

14

Parameter failures.

SWITCH - VMS KEY

K-18

C-24, W-24

15

Parameter failures.

16

Parameter not available.

Machine locations such as "A-11, N-11" refer to the MACHINE OR CAB HARNESS CONNECTOR AND COMPONENT LOCATION GRID.

17

Module not responding.

18

Sensor supply fault.

19

Condition not met.

20

Parameter failures.

SWITCH - RH SERVICE BRAKE PEDAL

Machine locations such as "23" refer to the ENGINE HARNESS CONNECTOR AND COMPONENT LOCATIONS illustrations.

¹The FMI is a diagnostic code that indicates what type of failure has occurred.

E-11

C-33, S-33

SWITCH - RUNNING LAMP

H6

D-37, Q-37

SWITCH - STAIRWAY ACESS LAMP

E-6

D-37, Q-37

SWITCH - STEERING LOCK

J-12

E-35, V-35

SWITCH - STOP LAMP

F-11

C-33, U-33

SWITCH - THROTTLE LOCK RESUME

K-11

E-35, R-35

SWITCH - THROTTLE LOCK SET

K-11

E-35, R-35

SWITCH - THROTTLE LOCK ON-OFF

J-6

D-36Q-36

SWITCH - TORQUE CONVERTER LOCKUP

K-6

D-36, Q-36

SWITCH -REAR BRAKE ACCU PRESS

I-16

B-39, T-39

THERMOSTAT

J-18

T-40, C-40

Machine locations such as "A-11, N-11" refer to the MACHINE OR CAB HARNESS CONNECTOR AND COMPONENT LOCATION GRIDS. Machine locations such as "23" refer to the ENGINE HARNESS CONNECTOR AND COMPONENT LOCATIONS illustrations.

Event Codes - VIMS Condition

VIMS Service Operations Service Operations

Event Codes - Engine

E038

Low Engine Coolant Temperature

E072

Oil Level Low Mark

E073

Oil Filter Differential Pressure High

E074

Oil Filter Differential Pressure Very High

E095

Fuel Filter Restriction Warning

E098

Engine Prelube Override

E100

Low Engine Oil Pressure

E101

High Crankcase Pressure

E190

Engine Overspeed

E272

Inlet Air Restriction

E279

High Aftercooler Temperature

E540

Low Engine OilRefill Tank Level

E2089

Oil Renewal System Cannot Operate

V

U

U

T

T

S

S

R

R

Q

Q

P

P

O

O

Service Program Code

994F Wheel Loader Electrical System 442 1-295

N

CAB HARNESS CONNECTOR AND COMPONENT LOCATION GRID

16 INJECTOR 16

M

L

L

K

K

J

J

I

I

H

H

G

G

(ENGINE ECM)

24 FUSE BLOCK

19 JACKET WATER HEATER 2 (240 VAC)

21 ATMOSPHERIC PRESSURE SENSOR

FLYWHEEL HOUSING

F

F

E

E

Volume 1 of 2: Cab

STARTERS

Off Machine Switch Specification - Volume 1

D

D

61 CONNECTOR 58

Part No.

EMN GROUND

175-3244

C

C

LEFT SIDE VIEW OF ENGINE (RIGHT SIDE OF MACHINE)

Function Brake Accumulator - Pressure

B

Actuate

Deactuate

Contact Position

10700 kPa MAX (1552 psi) MAX

8960 ± 537 kPa (1300 ± 78 psi)

Pin A-B Normally Open² Pin A-C Normally Closed

Part No.

A 42

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

41

11

40

10

39

9

38

8

37

7

36

6

35

5

34

4

33

3

32

2

T

Function A/C Refrigerant - Pressure

1 X

Level Symbol

Circuit Breaker Symbol

Flow Symbol

Deactuate

Contact Position

170 ± 55 kPa (24.7 ± 8 psi)

Normally Open²

82.7 kPa MIN (12 psi) MIN

Normally Closed²

Fuse - A component in an electrical circuit that will open the circuit if too much current flows through it.

82.7 kPa MIN (12 psi) MIN

Normally Closed²

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.

Fuel Filter - Differential Pressure

144-5661

Steering & Impl Oil Cooler Bypass - Differential Pressure

137.9 ± 13.8 kPa MAX (20 ± 2 psi) MAX

164-7577

Transmission Filter Bypass - Force

171-8708

Coolant - Flow

8.9 N MAX (2 lbs) MAX

Symbols And Definitions

Normally Open²

.362 ± .029 N³ (1.3 ± 0.1 oz)

.303 N MIN (1.09 oz) MIN

Normally Open²

Above deactuation pt. but at least 2.3 mm. (.09 in.) before contacting stop.

Fluid level to be 10 ± 5 mm. (.39 ± 0.2 in.) below centerline of Sw

Normally Open²

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. Ground (Wired): This indicates that the component is connected to a grounded wire. The grounded wire is fastened to the machine.

172-8660

Implement, Brake, Steering, Oil Recovery & VIMS - Level

174-4312

Parking Brake - Pressure

8270 kPa MAX (1200 psi) MAX

6890 ± 345 kPa (999 ± 50 psi)

Pin A-B Normally Open² Pin A-C Normally Closed

227-6744

Front Pump Drive Lube - Pressure

276 ± 28 kPa (40 ± 4 psi) MAX

179 MIN (26 psi) MIN

Normally Closed²

253-2673

Case Drain Bypass & Pilot Filter Bypass - Differential Press

137.9 ± 28 kPa MAX (20 ± 4 psi) MAX

69 kPa MIN (10 psi) MIN

Normally Closed²

1200 kPa MAX (174 psi) MAX

700 ± 100 kPa (102 ± 14.5 psi)

Pin A-B Normally Open² Pin A-C Normally Closed

Primary Steering - Pressure

Temperature Symbol

Actuate

116-9933

3E-6450

Pressure Symbol

275 kPa MAX¹ (39.9 psi) MAX 137.9 ± 13.8 kPa MAX (20 ± 2 psi) MAX

31

X

Symbols

² Contact position at the contacts of the harness connector.

B

Printed in U.S.A.

Harness And Wire Electrical Schematic Symbols

60 ELECTRIC

Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine. 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.

T

¹ With increasing pressure the closed condition can be maintained up to 2800 ± 140 kpa (406 ± 20 psi), with decreasing pressure the closed condition can be maintained down to 170 ± 55 kpa (24.7 ± 8 psi). If 2800 kPa is exceeded, the contact will open & remain open until the pressure falls to 1750 ± 200 kPa (254 ± 29 psi). The contact will now close and remain closed until the pressure falls below 170 ± 55 kPa (24.7 ±8 psi).

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.

² Contact position at the contacts of the harness connector.

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.

³ With weight applied to the screw on lever arm which is nearest to the switch housing.

W

W

V

V

U

U

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.

Connector Location - Volume 1 Schematic Location

Machine Location

D-17

I-16, S-16

CONN 2

E-17

I-16, S-16

CONN 3

G-17

I-16, S-16

CONN 4

H-17

I-16, S-16

CONN 5

J-16

B-41, V-41

Connector Number

T

T

S

S

R

R

Q

Q

P

P

O

O

N

N

M

M

L

L

K

K

J

J

CONN 1

CONN 6

J-16

B-41, V-41

CONN 7

L-16

B-39, R-39

CONN 8

K-14

C-37, P37

CONN 9

I-14

D-37, P37

CONN 10

G-14

D-36, P36

CONN 11

F-14

C-35, P-35

CONN 12

C-14

F-41, Q-41

CONN 13

B-14

G-41, Q-41

CONN 14 - CAMERA

A-11

I-16, Q-16

CONN 15 - VIMS

C-11

E-33, T-33

CONN 16 - VIMS

C-10

D-33, T-33

CONN 17 - CAMERA

E-12

E-26, U-26

CONN 18

K-13

C-36, S-36

CONN 19

K-13

C-36, S-36

CONN 20

L-13

C-37, U-37

CONN 21

L-12

E-35, R-35

CONN 22

C-10

C-34, P-34

CONN 23 - 12V POWER PORT

G-7

D-37, Q-37

CONN 24

C-9

G-37, Q-37

CONN 25

B-9

G-37, Q-37

CONN 26

B-9

G-37, Q-37

CONN 27 - ENTERTAINMENT RADIO

A-5

J-38, R-38

CONN 28

B-7

D-35, P-35

CONN 29

C-7

D-35, P-35

CONN 30

C-7

D-38, P-38

CONN 31 - SERVICE TOOL

E-6

D-37, Q-37

CONN 32

I-3

G-40, Q-40

CONN 33

L-1

K-36, O-36

CONN 34

K-1

K-41, T-41

Harness And Wire Symbols 1 2

1 2

Deutsch connector: Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.

Harness Identification Letter(s): (A, B, C, ..., AA, AB, AC, ...)

Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes

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 Plug

C-C4 AG-C3 130-6795 130-6795

Sure-Seal connector: Typical representation of a Sure-Seal connector. The plug and receptacle contain both pins and sockets.

L-C12 3E-5179

AG-C4 111-7898

Part Number For Connector Recepticle

1

325-AG135 PK-14

5A

Socket

Pin

Fuse (5 Amps)

Receptacle Pin or Socket Number

Single Wire Connector

9X-1123

Component Part Number

Plug

200-L32 BK-14

2

Harness identification code: This example indicates wire 135 in harness "AG".

Ground Connection

Circuit Identification Number

Wire Gauge

Wire Color

Connector Location - Volume 2

I

I

H

H

G

G

F

F

E

E

D

D

C

C

B

B

A

A 28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

MACHINE HARNESS CONNECTOR AND COMPONENT LOCATION GRID

Transmission Abuse Event

Loss of Coolant Flow

V

Component Location - Volume 1

I-38, W-38

E035

W

A

B-5

High Exhaust Temperature

W

114-5333

LAMP - DOME

High Engine Coolant Temperature

14 INJECTOR 14

ENGINE HARNESS CONNECTOR AND COMPONENT LOCATIONS

G-33, T-33

E021

X

Off Machine Switch Specification - Volume 2

D-37, Q-37

E017

12 INJECTOR 12

(240 VAC)

G-7

Condition

X

M

BLOCK (240 VAC)

H-11

Event Code

10 INJECTOR 10

23 TERMINAL

KEYPAD - VIMS

Coasting in Neutral Warning

INJECTOR 8

59

DISPLAY - SPEED, TACH

“Machine Driven with Park Brake On”

8

20 ADEM CONTROL JACKET WATER HEATER 4 (240 VAC)

RELAY - PLATFORM FLOOD

Y

N

INJECTOR 6

RESISTOR

29

E627-3

6

22 CAN DATA LINK

D-25, S-25 H-16, V-16

Y

© 2011 Caterpillar, All Rights Reserved

25

E049-2

INJECTOR 4

32

CONNECTOR 44

H-16, V-16 H-16, V-16

Z

33

G-8 K-8

Z

SENSOR

K-14

H-8

RENR6322-01 May 2011

18 MAGNETIC TACH

RELAY - ENGINE SHUTDOWN RELAY - HVAC PRECLEANER

31

34

H-18

E047-1

4

SPEED/TIMING SENSOR

H-18

Event Code

INJECTOR 2

17 PRIMARY CAM

SENSOR - OIL PRESSURE -FILTERED

2

49

(EFPP) SWITCH

RELAY - ENGINE PRELUBE SECONDARY RELAY - FND FLOOD

32

48 THERMOSTAT SWITCH

37

FUEL FILTER DIFF PRESS SWITCH

H-28, P-28

LAMP - RH TOWER FLOOD 2

33

38

ROCKFORD FAN SOLENOID

I-10, V-10

34

50

39

TURBO OUTLET PRESSURE SENSOR

C-4

27

HEATER 3 (240 VAC)

INLET EXHAUST TEMP SENSOR

LAMP - LH TOWER FLOOD 2

J-17

47 JACKET WATER

42 LH TURBO COOLANT TEMPERATURE SENSOR

I-10, V-10

35

46 COOLANT FLOW SW 51

41 ELECTRONIC FUEL PRIMING PUMP

40

SENSOR - OIL PRESSURE - UNFILTERED

Failure Description

OIL RENEWAL VALVE (ATTACHMENT)

ENGINE OIL HEATER 1 (240 VAC)

Limit Switch (Parking Brake)

FMI No.

CRANKCASE PRESSURE SENSOR

53 CONNECTOR 46

2

C-4

36

45 ALTERNATOR 2

LH TURBO INLET PRESSURE SENSOR

LAMP - LH TOWER FLOOD 1

37

COMPRESSOR CLUTCH

Sensor (Supply Voltage)

Failure Mode Identifiers (FMI)¹

43 RH TURBO

44 A/C

0070

Component

INJECTOR 7

RIGHT SIDE OF ENGINE (LEFT SIDE OF MACHINE)

9

38

INLET PRESSURE

0041

CID

7

39

1 INJECTOR 1

(240 VAC)

8

F-11

3 INJECTOR 3

INJECTOR 5

TEMP SENSOR

ELECTRRONIC FUEL PRIMING PUMP (EFPP)

F-18

SENSOR - TRANS SPEED 2

5

INJECTOR 9

54 CONNECTOR 45

F-17

SENSOR - IMPLEMENT TANK OIL TEMP

9

58 RH TURBO

56 TIMING CAL PLUG

INJECTOR - 9

SENSOR - LH TURBO IN EXHAUST TEMP

Component

13 INJECTOR 13

57 AFTERCOOLER

FLYWHEEL HOUSING

INJECTOR - 8

SENSOR - IMPLEMENT PUMP PRESS

Electronic Transmission Control System (MID No. 081)

15 INJECTOR 15

40

8

7

6

5

4

3

2

1

Connector Number

Schematic Location

Machine Location

CONN 1

A-1

I-16, S-16

CONN 2

C-1

I-16, S-16

CONN 3

D-1

I-16, S-16

CONN 4

E-1

I-16, S-16

CONN 36

A-17

E-20, R-20

CONN 37

A-17

E-20, R-20

CONN 38

A-17

E-24, Q-24

CONN 39

B-17

H-16, N-16

CONN 40

G-18

36

CONN 41

L-18

C-24, W-24

Engine

CONN 42

L-16

E-26, T-26

Starting and Charging:

SENR2947

CONN 43

K-16

E-26, T-26

Hydraulic/Implement System:

RENR6323

Vital Information Management System (VIMS)

RENR6318

Power Train/Transmission Control:

RENR6306

Related Electrical Service Manuals Title

Form Number

HDB Alternator: 50MT Electric Starting Motor:

177-9953

SENR4130

6V-0889

SENR3860 RENR9347

CONN 44

I-17

31

CONN 45

H-15

H-20, T-20

CONN 46

G-15

H-20, T-20

CONN 47

B-16

I-20, Q-20

CONN 48

A-16

H-20, Q-20

CONN 49

A-15

I-20, Q-20

CONN 50

B-13

H-20, T-20

CONN 51

B-13

H-20, T-20

Part No.

CONN 52

D-13

F-20, T-20

111-0879

Resistor:

CONN 53

E-14

H-18, T-18

174-3016

Resistor 1:

CAN Termination Resistor

CONN 54

F-13

H-16, S-16

239-9368

Resistor 3:

HVAC Water Valve Resistor

CONN 55

J-14

E-26, W-26

9G-1950

Resistor:

CONN 56

L-14

E-25, T-25

¹ At room temperature unless otherwise noted.

CONN 57

E-11

G-16, S-16

CONN 58

D-12

61

CONN 59

B-10

G16, R-16

Part No.

CONN 60

B-10

G-16, S-16

134-2540

Resistor:

Can Data Link Resistor 2

CONN 61

B-9

G-14, R-14

143-5122

Resistor:

Fan Speed Resistor 1

CONN 62

C-10

G-16, S-16

147-5399

Solenoid:

CL1, CL2, CL3, CL4 & CL5 Transmission Solenoids

8.1 - 8.22

CONN 63

C-9

G-14, R-14

152-8385

Solenoid:

Implement Raise Stop & Lower Kickout Cushion Solenoids

31.0 - 34.2

Resistor Specifications - Volume 1 Component Description

Resistance (Ohms)¹

Water Valve Temp Select Rheostat

4500 - 5500 @ Maximum setting

Blower Resistor

108 - 132 26730 - 27270 .95 - 1.05 on each side of tap

Resistor, Sender and Solenoid Specifications - Volume 2 Component Description

CONN 64

E-9

H-18, V-18

153-0509

Sender:

Service Program CodeNumber

CONN 65

F-9

H-18, V-18

185-0008

Solenoid:

CONN 66

C-8

H-13, S-13

196-1185

Sender:

Fuel Level Sender LH & RH Air Horn Valves Transmission Speed Sensors

Resistance (Ohms)¹ 108 - 132 3135 - 3465

92 -98 Empty, 0-3.5 Full 72 - 76 1000 - 1200

Show Acknowledged Events

"EACK"

3225

CONN 67

A-8

G-14, Q-14

216-5342

Solenoid:

Lockup Clutch Solenoid

8.3 - 9.1

Show Event Statistics

"ESTAT"

37828

CONN 68

A-8

F-12, Q-12

217-2708

Solenoid:

Impeller Clutch Solenoid

6.75 - 8.75

Show Event List Contents.

"ELIST"

35478

CONN 69

A-6

E-11, S-11

217-4448

Solenoid:

A/C Clutch Solenoid

Toggle Display Language

"LA"

52

CONN 70

A-6

G-12, R-12

235-0266

Toggle Display Units

"UN"

86

CONN 71

C-6

G-13, P-13

235-8824

Machine Status

“MSTAT”

67828

CONN 72

C-5

H-11, P-11

¹ At room temperature unless otherwise noted.

Start/Stop Data Logger

“DLOG”

3564

CONN 73

C-6

G-13, U-13

Calibrate Payload Monitor

“PAYCAL”

729225

CONN 74

C-5

H-11, U-11

Reset Service Lamp

“SVCLIT”

782548

CONN 75

K-3

H-16, V-16

Self Test

“TEST”

8378

CONN 76

J-3

H-16, V-16

Payload ResettableTotals

“TOT”

868

CONN 77

I-3

H-16, V-16 H-16, V-16

Start Event Recorder

“EREC”

3732

CONN 78

H-3

Reset Data Logger

“DLRES”

35737

CONN 79

G-3

H-16, V-16

Backlight Intensity

“BLT”

258

CONN 80

F-3

H-16, V-16

Message Center Contrast

“CON”

266

CONN 81

E-3

H-16, V-16

Odometer Set/Reset

“ODO”

636

CONN 82

B-4

H-16, W-16

“RESET”

73738

CONN 83

B-3

I-16, U-16

CONN 84

A-3

H-16, S-16

Clear Resettable Totals Set Service Light Options (This command can be performed when the PC for VIMS is connected to the machine.) Set Event Trigger

“SVCSET”

782738

“ERSET”

37738

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.

Solenoid: Solenoid:

Oil Renewal Valve Ether 1 & Ether 2 Valves

13.4 86.6 31 - 46 at 93C

(Dimensions: 56 inches x 35 inches)

AIR DRYER

Schematic Location

41

42 Page,

Component

11 INJECTOR 11

RENR6322-01 VOL 1 of 2

Component Identifiers (CID¹) Module Identifier (MID²) ADEM Engine Control (MID No. 036)


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