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INTERACTIVE SCHEMATIC

The

The Bookm

Bookm arks pane

arks panel will

l will allow you to

allow you to

quickly navigate to points of interest.

Click on any text th

Click on any text th at is BLUE a

at is BLUE and und

nd und erlined.

erlined.

The

These are hype

se are hyperlin

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ks t hat can be used to n

hat can be used to n avi-

avi-gate the schema

gate the schematic and m

tic and m achine views.

achine views.

When only one callout is showing on a machine view this

button will make all of the callouts visible. This button is

located in the top

located in the top right

right corner of

corner of eve

every machin

ry machin e view pa

e view page.

ge.

VIEW

ALL

CALLOUTS

Cover Page Cover Page Information Information Schematic Schematic Machine Views Machine Views Component Table Component Table Tap Table Tap Table

Fluid Power Symbols Fluid Power Symbols Electrical Symbols Electrical Symbols Front Frame Front Frame Rear Frame Rear Frame Tap Views Tap Views Features Features Options Options Bookmarks Bookmarks XX EC-C3 EC-C3 EC-C2

EC-C2 _E-C60_E-C60

EC-C1 EC-C1

E-C61 E-C61

T

To set your

o set your screen resolution do

screen resolution do the following:

the following:

RIGHT CLICK

on the

DESKTOP

..

Select

PROPERTIES

..

CLICK

the

SETTINGS TAB

..

MOVE THE SLIDER

under

SCREEN RESOLUTION

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CLICK OK

to apply the resolution.

T

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KEYS

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SPACE

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©

2009

Caterpillar,

All

Rights

Reserved

Printed

in

U.S.A.

Volu me 2 of 2: Engin e and Chassi s

Volume 1 of 2: Cab

RENR8733-04

June 2009

924G & 924Gz Wheel Loader

Electrical System

930G Wheel Loader

928G Wheel Loader

924Gz:

RTA325-UP

928G:

DJD1547-UP

930G:

TWR1-UP

924G:

DDA1623-UP

RBB734-UP

(3)

Volume 1 of 2 - CAB

COMPONENT LOCATION

Component Schematic Location Machine Location Component Schematic Location Machine Location Audible Alarm G-2 A Socket - 12V AUX H-13 5

Beacon I-15 40 Solenoid - Pilot Shutoff A-8 D Cluster - Instrument H-2 A Solenoid - Quicksteer F-3 1 Control - Machine ECM E-3 1 Switch - A/C & Heater D-9 D Converter - 12V / 24V DC H-13 E Switch - Auto / Manual / VSC E-7 B

CST Shifter H-2 A Switch - Beacon E-7 B

Defroster - Rear G-15 7 Switch - Blower C-9 D Flasher F-2 A Switch - Bucket / Fork Select F-9 D Fuses - Key Switch On E-12 E Switch - Front Wiper H-5 C Ground - Cab A-15 9 Switch - Fwd Horn F-2 A Ground - Shell F-15 88 Switch - Implement Disable I-9 D Lamp - Dome H-14 45 Switch - Key Start F-2 A Lamp - Rear Flood LH I-15 41 Switch - Kickout On / Off F-9 D Lamp - Rear Flood RH I-15 42 Switch - Parking Brake H-13 5 Lamp - Roof Flood LH I-2 43 Switch - Quick Coupler G-9 D Lamp - Roof Flood LH (Atch) I-1 43 Switch - Quicksteer F-5 B Lamp - Roof Flood RH I-2 44 Switch - Rear Intermittent Wiper H-6 B Lamp - Roof Flood RH (Atch) I-1 44 Switch - Rear Window Defrost F-9 D Lighter - Cigar F-6 D Switch - Rear Wiper G-5 C Motor - Blower I-12 12 Switch - Remote FNR A-8 D Motor - Front Wiper G-8 6 Switch - Reversing Fan E-9 D Motor - Rear Wiper G-15 7 Switch - Ride Control E-9 D Relay - Brake Lamp C-13 E Switch - Running Lamp D-8 B Relay - Defroster G-12 E Switch - Secondary Steer G-5 C Relay - Main Power G-12 E Switch - Service Brake C-7 B Relay - Reversing Fan C-12 E Switch - Thermostat H-12 12 Relay - Ride Control C-12 E Switch - Throttle Lock Enable H-9 D Relay - Secondary Steer C-12 E Switch - Throttle Lock Set G-9 D Resistor - CAN Data Link Term 1 G-2 A Switch - Turn Signal F-2 A Resistor - Heater Group H-12 12 Switch - XMSN Neutralizer / Override F-7 B Sensor - Throttle Position G-3 11 Valve Gp - Pilot Solenoid (1, 2) A-5, A-6 D Sensor - XMSN Neutralizer H-3 11

Machine locations are repeated for components located close together. A = Located in the center gage panel.

B = Located in left-hand dash panel. C = Located in right-hand dash panel. D = Located in right-hand console. E = Located in or near relay panel.

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Volume 2 of 2 - ENGINE AND CHASSIS

Page 1 of 2

COMPONENT LOCATION

Component Schematic Location Machine Location Component Schematic Location Machine Location

Relay - Float 924 (Z-Bar) E-5 35

Alarm - Audible (MSS Transponder) I-9 A

Relay - Fuel Pump D-10 8

Alarm - Backup G-13 54

Relay - Secondary Steering E-12 16

Alternator A-10 2

Relay - Start C-10 8

Arc Supp - A/C A-10 2

Relay - Thermal Start D-10 8

Arc Supp - Quick Coupler 1&2 930 B-5 35

Relay - V-Link Ride Control 930 C-1 35

Resistor - Alternator A-11 2

Arc Supp - Quick Coupler 924 (V-Link) D-5 & C-5 35

Resistor - CAN Data Link Term 2 B-10 2

Arc Supp - Quick Coupler 928/IT28 (Z-BAR) G-5 35

Resistor - CAN Data Link Terminator (MSS) I-9 A Arc Supp - V-Link Ride Control 930 C-1 35

Resistor - Thermal Start C-10 8

Arc Supp - Z-Bar Ride Control 924 F-2 35

Sender - Fuel Level F-11 20

Arc Suppressor - Float 924 (Z-Bar) E-5 35 Sensor - Brake Charging Oil Pressure B-10 57

Arc Suppressor - Secondary Steering E-12 16 Sensor - Coolant Temperature D-13 58

Battery - 1 & 2 D-8 & D-9 6 Sensor - Engine Speed D-13 56

Breaker - Alternator C-10 8 Sensor - Hyd Oil Temp B-10 57

Breaker - AUX C-10 8 Sensor - Intake Manifold Pressure D-13 58

Breaker - Lamp C-10 8 Sensor - Intake Manifold Temperature D-13 58

Breaker - Main C-10 8 Sensor - Interm Speed 1 H-9 T

Camera I-11 54 Sensor - Interm Speed 2 H-9 T

Coil - Key Switch Exciter I-9 A Sensor - Oil Pressure C-13 56

Sensor - TC O il Temp F-10 T

Control - Camera Display I-11 D

Sensor - TOS Speed 1 H-9 T

Control - Engine ECM C-13 56

Sensor - TOS Speed 2 G-9 T

Control - Fuel Pump D-13 57

Sensor - XMSN Input Speed H-9 T

Control - Product Link I-1 51

Sensor - XMSN Oil Temperature G-10 T

Diode - Reversing Fan F-13 55

Solenoid - 3rd Function I-4 D

Ground - Camera Display Control H-12 D

Solenoid - A/C Compressor Group A-10 2

Ground - Engine A-10 2

Ground - Engine End Frame C-8 26 Solenoid - Clutch 1 (FWD Low) G-10 T

Ground - Frame D-9 29 Solenoid - Clutch 2 (FWD High) G-10 T

Ground - O'Rops H-12 12 Solenoid - Clutch 3 (Reverse) G-10 T

Ground - Rear Frame F-12 16 Solenoid - Clutch 4 (2nd Gear) H-10 T

Handle - 5th . 6th Function F-11 D Solenoid - Clutch 5 (3rd Gear) H-10 T

Solenoid - Clutch 6 (1st Gear) H-10 T

Heater - Thermal Start B-8 27

Solenoid - Demand Fan F-13 55

Horn - Forward 924 (Z-Bar) F-4 76

Solenoid - Float 1 924 (Z-Bar) F-5 35

Horn - Forward 924/930 (V-Link) B-4 & C-4 76

Solenoid - Float 2 924 (Z-Bar) E-5 35

Horn - Forward 928 (Z-Bar) G-3 76

Solenoid - Quick Coupler 924 / 930 (V-Link) C-5 & A-5 35

Lamp - Flood Front LH 924 (Z-Bar) F-4 72

Solenoid - Quick Coupler 928/IT28(Z-BAR) G-5 35

Lamp - Flood Front LH 928 (Z-Bar) F-2 72

Solenoid - Reversing Fan F-13 55

Lamp - Flood Front RH 924 (V-Link) C-3 73

Solenoid - V-Link Ride Control 930 C-1 35

Lamp - Flood Front RH 924 (Z-Bar) F-2 73

Solenoid - Z-Bar Ride Control 924 / 928 F-2 & G-3 35

Lamp - Head LH 930 B-4 72

Switch - A/C Refrigerant Pressure B-10 2

Lamp - Head RH 930 A-4 73

Switch - Air Inlet Restriction B-10 50

Lamp - Stop / Tail / Turn LH G-13 70

Switch - Axle Oil Pressure G-11 10

Lamp - Stop / Tail / Turn RH F-13 71

Switch - Bucket Pos 924 / 930 (V-Link) C-3 & B-3 81

Lamp - Turn Front LH 924 (Z-Bar) F-4 72

Arc Supp - V-Link Ride Control 924 D-1 35

Arc Supp - Z-Bar Ride Control 928 G-4 35

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Volume 2 of 2 - ENGINE AND CHASSIS

Page 2 of 2

COMPONENT LOCATION

Component Schematic Location Machine Location Component Schematic Location Machine Location Switch - Bucket Positioner 928 (Z-Bar) G-3 80

Lamp - Turn Front LH 928 (Z-Bar) H-2 72

Switch - Bucket Postioner 924 (Z-Bar) E-4 80

Lamp - Turn Front RH 924 (Z-Bar) E-4 73

Switch - Disconnect D-9 29

Lamp - Turn Front RH 928 (Z-Bar) E-1 73

Switch - Float Pressure 924 (Z-Bar) E-5 35

Module - MSS Transponder Reader I-9 A

Switch - Fork Positioner 924 / 930 (V-Link) A-3 & C-3 81 Module - Voltage Load Protection (VLPM) D-11 56

Switch - Hyd Oil Filter Bypass G-12 57

Motor - Condenser Fan 1 H-11 53

Switch - Key Start MSS Transponder H-8 A

Motor - Condenser Fan 2 H-11 53

Switch - Lift Positioner 924 (Z-Bar) E-4 82

Motor - Front Washer 924 (Z-Bar) F-5 17

Switch - Lift Positioner 924 / 930 (V-Link) D-4 & B-4 82 Motor - Front Washer 924 / 930 (V-Link) D-5 & B-5 17

Switch - Lift Positioner 928 (Z-Bar) F-3 82

Motor - Front Washer 928 (Z-Bar) G-5 17

Motor - Rear Washer 924 (Z-Bar) F-5 17 Switch - Primary Steer Pressure G-11 T

Motor - Rear Washer 924 930 (V-Link) D-5 & B-5 17 Switch - Variable Flow (3rd Function) I-4 D

Motor - Rear Washer 928 (Z-BAR) H-5 17 Switch - V-Link Ride Control Pressure 930 D-2 35

Motor - Secondary Steering E-13 16 Switch - XMSN Oil Filter Bypass F-10 T

Motor - Starter C-8 26 Valve Gp - 5th / 6th Function Solenoids E-10 D

A = Located in the center gage panel. D = Located in right-hand console. T = Located on or around transmission.

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Volume 1 of 2 - CAB

CONNECTOR LOCATION

Connector Number

Schematic

Location

Machine

Location

CONN 1

B-15

18 CONN 2

B-15

18 CONN 3

B-15

18 CONN 4

C-15

18 CONN 5

D-15

18 CONN 6

H-14

45 CONN 7

H-15

47 CONN 8

F-14

45 CONN 11

G-13

74 CONN 12

I-13

12 CONN 13 Service Connector

B-9

D

CONN 14

E-13

D

CONN 15

H-12

E

CONN 16

A-9

B

CONN 17

D-6

C

CONN 18

D-6

C

CONN 19

E-6

C

CONN 20

A-4

1 CONN 21

F-4

9 CONN 22

F-4

9 CONN 23

G-4

9 CONN 52

F-2

A

CONN 53

G-2

A

CONN 54

G-2

A

CONN 58

B-9

D

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.

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Volume 2 of 2 - ENGINE AND CHASSIS

CONNECTOR LOCATION

Connector Number

Schematic

Location

Machine

Location

CONN 1

G-12

18 CONN 2

A-8

18 CONN 3

A-8

18 CONN 4

B-8

18 CONN 5

G-9

18 CONN 6

I-13

45 CONN 7

I-13

47 CONN 8

I-12

45 CONN 11

I-11

74 CONN 14

I-12

D

CONN 20

H-2

1 CONN 21

A-8, C-8, G-7

A-8, C-8,E-8, G-7 B-8, C-8,E-8, G-7

9 CONN 22

9 CONN 23

9 CONN 24

B-8,

I-5

9 CONN 35

E-13, F-12

16 CONN 36

G-12, H-13

53 CONN 38

D-11

8 CONN 39

D-2,

E-3

35 CONN 40

F-3

,

G-5

35 CONN 41

C-2,

E-3

9 CONN 45

E-5

35 CONN 46

A-5, C-4, F-3

4 CONN 47

G-4

4 CONN 48

B-5, D-4, H-3

4 CONN 49

CONN 50

A-5, C-4

E-4

4

4 CONN 52

I-10

A

CONN 53

I-10

A

CONN 54

I-10

A

CONN 55

E-4

4 CONN 56

F-4

4 CONN 57

CONN 59

CONN 60

CONN 61

A-10, A-11

2 D-10

8 I-2

51 I-2

51 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.

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CID / MID / FMI

Component Identifiers (CID¹)

Modul e Identi fier (MID²)

Engine Control System

(MID No. 036)

CID Component

0041 8 Volt DC Supply 0091 Throttle Position Sensor 0100 Engine Oil Pressure Sensor 0102 Boost Pressure Sensor

0105 Inlet Manifold Temperature Sensor 0110 Engine Coolant Temperature Sensor 0174 Fuel Temperature Sensor

0247 J1939 Data Link 0253 Personality Module

0262 5 Volt Sensor Power Supply 0266 Crank Without Injection Input 0320 Speed/Timing Sensor

0342 Secondary Engine Speed Sensor 0774 Secondary Throttle Position Sensor 1627 Fuel Pump relay

1639 Machine Security System Module 1684 Fuel Injection Pump

1743 Engine Operation Mode Selector Switch 1894 Cruise Control Disengage Switch 1895 Cruise Control Speed Toggle Switch

Machine Control System

(MID No. 081)

CID Component

0041 8 Volt DC Supply 0070 Parking Brake Switch 0096 Fuel Level Sensor

0177 Transmission Oil Temperature Sensor

0247 CAN Data Link

0262 5 Volt Sensor Power Supply

0271 Action Alarm

0291 Demand Fan Solenoid 0367 Ride Control Switch

0368 Transmission & Variable Speed Control Swit ch

0420 Secondary Steering

0426 Brake Oil Pressure Sensor 0444 Starter Motor Relay

0473 Brake Charging Pressure Sensor 0486 Fan Reversing Switch

0490 Pilot On / Off Switch

0585 Transmission Output Speed Sensor 1 0590 Engine Electronic Control Module 0600 Hydraulic Oil Temperature Sensor

0637 Backup Alarm

0668 Shift Lever Input

0672 Torque Converter Output Speed Sensor 0673 Transmission Output Speed Sensor II

0674 Transmission I ntermediate Speed Sensor I 0675 Transmission Int ermediate Speed Sensor II 0747 Quick Steer Switch

0793 Primary Steering Pressure Switch 0811 Gage Cluster #1

0826 Torque Conver ter Oil Temperatur e Sensor 0882 Pilot On / Off Solenoid

1231 Brake Charging Solenoid 1251 Alternator R-Terminal Signal 1401 Clutch 1 Solenoid 1402 Clutch 2 Solenoid 1403 Clutch 3 Solenoid 1404 Clutch 4 Solenoid 1405 Clutch 5 Solenoid 1406 Clutch 6 Solenoid

1639 Machine Security System Module 1834 Ignition Key Switch

1960 Ignition Key Reader 2292 Quick Steer Solenoid

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.

Failure Mode Identifiers (FMI)¹

FMI No.

Failure Description

00 Data valid but above normal oper ational range. 01 Data valid but below normal operational range. 02 Data erratic, intermittent, or incorrect.

03 Voltage above normal or shorted high. 04 Voltage below normal or shorted low. 05 Current below normal or open circuit. 06 Current above normal or grounded circuit. 07 Mechanical system not responding properly. 08 Abnormal frequency, pulse width, or period.

09 Abnormal update.

10 Abnormal rate of change. 11 Failure mode not identifiable. 12 Bad device or component. 13 Out of calibration.

14 Not Used

15 Not Used

16 Parameter not available. 17 Module not responding. 18 Sensor supply fault. 19 Condition not met.

20 Not Used

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Volume 1 of 2 - CAB

SPECIFICATIONS AND RELATED MANUALS

Related Electri cal Servic e Manuals

Form Number

Alternator: 177-9953 (80A)

197-8820 95A) SENR4130

Electric Starting Motor: 143-0451 SENR3828

Engine Control: RENR2417

Machine Control: RENR6423

Title

Off Machine Switch Specific ation

Part

No.

Function

Actuate

Deactuate

Contact

Position

3E-5464 Refrigerant Thermostat -1.1 ± 0.8°C

(30 ± 1.4°F)

2.2 ± 0.8°C

(36 ± 1.4°F) Normally Closed

Resistor, Sender and Solenoid Specifications

Part

No.

Component

Description

Resistance

(Ohms)¹

9G-1950 Resistor: A/C Overall: 2 ± 0.1

Between Taps: 1 ± 0.05

212-1305 Solenoid: PilotValveGp 76.3±3.8

225-0300 Solenoid: PilotValveShutoff 25±5

247-4503 Solenoid: Quicksteer 35±1.8

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Volume 2 of 2 - ENGINE AND CHASSIS

SPECIFICATIONS AND RELATED MANUALS

Related Electri cal Service Manuals

Form Number Alternator: 177-9953 (80A)

197-8820 95A) SENR4130 Electric Starting Motor: 143-0451 SENR3828 Engine Control: RENR2417 Machine Control: RENR6423

Title

Off Machine Switch Specification

Part No. Function Actuate Deactuate Contact Position

3E-7690 Axle Oil Pressure 62 kPa MAX

(8.9 psi MAX)

38 ± 20 kPa

(5.5 ± 2.9 psi) Normally Open

7X-8549 Hydraulic Filter Oil Bypass 124 ± 14 kPa

(17.9 ± 2 psi)

94.5 ± 8.5 kPa

(13.7 ± .3 psi) Normally Open 126-6916 930 V-Link Ride Control Pressure 225 kPa MAX

(32.6 psi MAX)

205 ± 20 kPa

(29.7 ± 2.9 psi) Normally Closed 134-0404 Transmission Oil Filter Bypass 290 ± 13.7 kPa

(42 ± 2 psi)

207 kPa MIN

(30 psi MIN) Normally Open 187-2868 Air Inlet Restriction Pressure 76.2 Cm. of Water

(30 in. of Water)

- - - Normally Open

229-1537 924 Z-Bar Float Pressure 2100 Kpa MAX

(304.5 psi MAX)

1750 ± 108 kPa (253.8 ± 15.6 psi)

A to C: Normally Closed B to C: Normally Open

230-5771 Primary Steering Pressure 1200 kPa MAX

(174 psi MAX)

700 ± 100 kPa (101.5 ± 14.5 psi)

A to C: Normally Closed B to C: Normally Open

236-6923 A/C Refrigerant Pressure 275 to 1750 kPa¹

(39.9 to 253.8 psi)

- - - Normally Closed²

¹ With increasing pressure the c losed 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.

Resisto r, Sender and Solenoi d Specificatio ns

Part No. Component Description Resistance (Ohms)¹

3E-9205 Solenoid: QuickCoupler 24.9±0.4

134-2540 Resistor: CAN Data Link Terminator 120 ± 1.2

143-5122 Resistor: Tachograph 3.3K±165.0

160-8408 Solenoid: Transmission Clutches 1 - 6 8.7 ± 0.4

189-2100 Solenoid: ReversingFan 32.6±1.6

194-7265 Sender: Fuel Level Empty: 240 to 250

Full: 28 to 33 201-0950 Solenoid: 930 V-Link Ride Control

924 / 928 Z-Bar Ride Control 41.9 ± 2.1

203-6590 Solenoid: BrakeCharging 5.0±0.3

211-2092 Solenoid: Demand Fan

5.81 ± 0.3 @ -40°C (-40°F) 7.75 ± 1 @ 25°C (77°F) 12.68 @ 121°C (249.8°F)

228-4982 Resistor: Alternator 150±7.5

235-4605 Solenoid: 3rdFunction 5±0.3

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HARNESS and WIRE

Electri cal Schematic Symbol s

1

2

AG-C4 111-7898 L-C12 3E-5179

9X-1123 Component_{Part Number}

Pin or Socket Number

Part Number: for Connector Receptacle Part Number: for

Connector Plug

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

Plug 325-AG135 PK-14 Wire Color Wire Gauge Receptacle Pressure Symbol T Temperature Symbol Level Symbol Flow Symbol Circuit Breaker Symbol

Harness and Wire Symbo ls

1

2

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

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

Symbols

Symbols and Definitions

Fuse (5 Amps)

5A

T

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

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.

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.

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 r eed 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.

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.

Harness id entification code: This example indicates wire group 325, wire 135 in harness "AG".

L-C12 3E-5179

Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).

Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...).

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