D6F SR, D6G PS, D6G SR TRACK-TYPE TRACTOR ELECTRICAL SCHEMATIC

1996 Caterpillar

Printed in U.S.A.

Component Location

Component

Schematic

Location

Machine

Location

Component

Schematic

Location

Machine

Location

Alarm - Action

B-8 D

Sender - Coolant Temperature

C-3 6

Alarm - Backup

E-9 1

Sender - Fuel

D-9 7

Alternator

B-2 2

Sender - Tachometer

A-6 8

Batteries

F-4 3

Sender - Torque Converter Oil Temperature

C-4 9

Breaker - Alternator

F-9 B

Solenoid - Start Aid

E-2 10

Electronic Monitoring System (EMS)

E-6 A

Solenoid - Variable Horsepower

A-9 11

Filter - Alternator

C-6 A

Suppressor - Arc

A-9 11

Fuses

E-8,F-7 B

Switch - Backup Alarm

E-8 C

Gauge - Coolant Temperature

B-6 A

Switch - Coolant

C-2 6

Gauge - Fuel Level

B-6 A

Switch - Disconnect

F-4 C

Gauge - Torque Converter Temperature

B-6 A

Switch - Engine Oil Pressure

C-3 6

Ground

A-8 4

Switch - Flood Lamp

C-8 A

Ground

B-2 2

Switch - Forward Horn

B-7 D

Ground - Frame

A-3 4

Switch - Front/Dash Lamp

C-8 A

Ground - Frame

F-4 C

Switch - Fuel Pressure

C-3 12

Ground - Module

D-6 A

Switch - Hydraulic Oil Temperature

D-9 13

Ground - Opr Monitor Panel Mounting Bolt

C-7 A

Switch - Key Start

D-7 A

Horn - Front

F-1 5

Switch - Neutral Start

D-8 C

Lamp - Master Action

D-7 A

Switch - Neutral Start

E-8 C

Lamp - Variable Horsepower Indicator

B-7 A

Switch - Operator Monitor Test

D-7 A

Meter - Service

B-6 A

Switch - Start Aid

D-8 A

Motor - Starter

B-3 4

Switch - Start Aid Temperature

E-2 10

Relay - Main

F-8 B

Switch - Transmission

A-4 14

Relay - Start

F-8 B

Tachometer

B-6 A

Resistor - Starter/Diagnostic

B-3 4

Machine locations are repeated for components located close together.

A = Located in the dash area.

B = Located in the relay panel area.

C = Located in the left console area.

D = Located in the right console area.

Connector Location

Connector Number

Schematic

Location

Machine

Location

CONN 1 A-9 15

CONN 2 C-9 15

CONN 3 E-9 16

CONN 4 Diagnostic Conn F-9 B

CONN 5 E-8 C

CONN 6 D-8 C

CONN 7 D-8 A

CONN 8 B-7 A

CONN 9 D-7 A

CONN 10 C-6 A

CONN 11 A-5 14

CONN 12 A-4 4

CONN 13 C-4 10

CONN 14 E-3 17

CONN 15 D-3 17

CONN 16 D-3 17

CONN 17 F-2 5

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.

Related Electrical Service Manuals

Form Number

Alternator: 6N-9294 SENR4130

Electronic Monitoring System (EMS) SENR2945

Starting and Charging Systems SENR2947

Starting Motor: 106-8555

Consist: 6V-5023

Consist: 6V-5207

Consist: 6V-5226

SENR3536

SENR3581

SENR4975

Title

Resistor, Sender and Solenoid Specifications

Part No.

Component Description

Resistance (Ohms)¹

6T-2217 Resistor - Starter/Diagnostic Conn 150 ± 7.5

9G-4365 Solenoid - Start Aid 6.0

104-9258 Solenoid - Variable Horsepower 21.7 ± 2.8

¹ At room temperature unless otherwise noted.

Off Machine Switch Specification

Part No. Function Actuate Deactuate Contact Position

3E-6425 Start Aid Temperature

38.00 ± 3.0°C

(100.4° ± 5.4°F)

27.0 °C MIN

(80.6°F MIN)

Normally Closed

7N-9785 Coolant Temperature

107.2 ± 2.8°C

(225.0 ± 5.0°F)

93.0°C MIN

(200°F MIN)

Normally Closed

8N-2248 Hydraulic Oil Temperature

101.7°C MIN

(215.0°F MIN)

93.3°C MIN

(200°F MIN)

Normally Closed

107-0613 Engine Oil Pressure

62 ± 21 kPa

(9.0 ± 3.0 psi)

38 ± 21 kPa

(5.5 ± 3.0 psi)

Normally Open

107-0616 Fuel Pressure

93 ± 21 kPa

(13.5 ± 3.0 psi)

69.0 ± 21 kPa

(10.0 ± 3.0 psi)

Normally Closed

Wire Description

Wire

Number

Wire

Color

Description

Wire

Number

Wire

Color

Description

Power Circuits

Monitoring Circuits

101 RD Battery (+) 403 GN

Alternator (R) Terminal.

102 BU Head Lamp 404 YL

Operator Monitor Hydraulic Oil Temperature

105 BR Key Switch 405 GY

Operator Monitor Oil Pressure (Lo Setting)

108 BU Auxiliary Circuit 406 PU

Operator Monitor Coolant Temperature

109 OR Alternator Output (+) Terminal. 410 WH

Operator Monitor Action Alarm

112 PU Main Power Relay Output 411 PK

Operator Monitor Action Alarm Lamp

113 OR Operator Monitor Panel B (+) Switched 413 BR

Operator Monitor Fuel Pressure

114 GN Warning Horn (Forward) 415 GN

Operator Monitor Test Switch

116 BR Auxiliary Circuit 428 OR

Operator Monitor Transmission Oil Temperature

121 YL Backup Alarm to Lamp 439 YL

Lamp Indicator

123 WH Auxiliary Circuit 441 OR

Engine Coolant Temperature Gauge

145 BU Auxiliary Circuit 443 YL

Power Train Temperature Gauge

Ground Circuits

447 PK

Fuel Level Gauge

200 BK Main Chassis 450 YL

Tachometer Sender (+)

201 BK Operator Monitor Panel

Lighting Circuits

203 BK Chassis Diagnostic 600 BR

Dash Lamp Basic

207 BK Starter Diagnostic 607 PK

Flood Lamp - Front

Basic Machine Circuits

608 GN

Flood Lamp - Rear

301 BU Starter No. 1 Solenoid

Control Circuits

302 OR Starter No. 1 Resistor to Diagnostic 788 YL

Engine Speed (+)

304 WH Starter Relay No. Output

306 GN Starter Relay Coil to Neutral Start Switch

307 OR Key Switch to Neutral Start Switch

308 YL Main Power Relay Coil

310 PU Start Aid Switch to Start Aid Solenoid

311 WH Start Aid Solenoid to Temperature Switch

321 BR Backup Alarm Lamp

322 GY Warning Horn (Forward)

Machine Harness Connector And Component Locations

D78394

A AA

325-PK-14

200-BK-14

FUSE - A component in an electrical circuit that will open the circuit if too much current flows

through it.

REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the

contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.

SENDER - A component that is used with a temperature or pressure gauge. The sender

measures the temperature or pressure. Its resistance changes to give an indication to the

gauge of the temperature or pressure.

RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.

It has a coil that makes an electromagnet when current flows through it. The electromagnet

can open or close the switch part of the relay.

CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too

much current flows through it. This does not destroy the circuit breaker and it can be reset to

become part of the circuit again.

SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil

that makes an electromagnet when current flows through it. The electromagnet can open or

close a valve or move a piece of metal that can do work.

Harness And Wire Electrical Schematic Symbols

Socket

Pin or Socket

Number

Wire, Cable, or Harness

Assembly Identification

Single Wire

Connector

Circuit Number

Identification

Wire

Gauge

Wire

Color

Plug

Receptacle

9X-1123

Component

Part Number

Electrical Schematic Symbols And Definitions

Typical representation of a

Sure-Seal connector. The

plugand receptacle contain

both pins and sockets.

Typical representation of a

Deutsch connector. The

plug contains all sockets

and the receptacle contains

all pins.

MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is

activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)

that make electromagnet when current flows through them. It also has an internal switch that places

the latch coil circuit open at the time the coil latches.

Normally open switch that will close with an increase of a specific condition (temp-press-etc.).

Normally open switch that is closed due to an applied condition, and will open again with a

specific decrease in that condition.

Normally closed switch that will open with an increase of a specific condition.

Normally closed switch that is open due to an applied condition, and will close again

with a specific decrease in that condition.

The circle indicates that the component has screw terminals and a wire can be disconnected

from it.

No circle indicates that the wire cannot be disconnected from the component.

This indicates that the component has a wire connected to it that is connected to ground.

This indicates that the component does not have a wire connected to ground. It is grounded

by being fastened to the machine.

Electrical Schematic Symbols And Definitions

Pressure

Symbol

Temperature

Symbol

Level

Symbol

Flow

Symbol

SENR8379

October 1996

D6F SR, D6G PS, and D6G SR Tractors

Electrical System

D6F SR:

5FR1-UP

D6G PS:

2MJ02654-UP

D6G SR:

3SR1-UP

WIRES THAT HAVE BATTERY VOLTAGE

WHEN THE KEY SWITCH IS OFF.

WIRES THAT HAVE BATTERY VOLTAGE

WHEN THE KEY SWITCH IS ON.

STARTING CIRCUIT.

GAUGE CIRCUIT.

MONITOR CIRCUIT. (EMS)

PANEL LAMP CIRCUIT.

GROUND CIRCUIT.

START AID CIRCUIT.

ALL DASHED LINES ARE ATTACHMENTS.

322-GY-14

200-BK-14

FRONT

HORN

7T-0970

FRONT

HORN

7T-0969

FLOOD

LAMP

107-6689

607-PK-14

200-BK-14

322-GY-14

200-BK-14

607-PK-14

CONN 17

200-BK

322-GY

607-PK-14

200-BK-14

START AID

SOLENOID

9G-4365

BK-18

L1 L1

311-WH

200-BK

607-PK-14

310-PU

322-GY

200-BK

310-PU

311-WH

START AID

TEMP SW

3E-6425

200-BK

311-WH

°T

RD-00

403-GN

441-OR

413-BR

201-BK

405-GY

406-PU

405-GY

201-BK

406-PU

201-BK

BK-18

201-BK

413-BR

441-OR

403-GN

COOLANT SW

7N-9785

ENGINE OIL

PRESS SW

107-0613

°T

FUEL SW

107-0616

COOLANT

TEMP SENDER

6N-5926

441-OR

109-OR-6

BK-10

ALTERNATOR

6N-9294

NOTE E

ALT

403-GN

RD-00

788-YL-14

304-WH-8

101-RD-6 101-RD-6

304-WH-8

200-BK-8

207-BK

302-OR

109-OR-6

302-OR

301-BU

RESISTOR

6T-2217

STARTER

106-8555

FRAME

GROUND

BK-6

BK-00

200-BK-8

207-BK

301-BU

MOTOR

G S

MTR BAT

443-YL

428-GY

201-BK

TORQUE CONV

OIL TEMP

SENDER

3E-7259

NOTE B

NOTE: ON MODELS D6F SR AND D6G SR, ATTATCH 3

LAMP SOCKETS OF HARNESS AS. N TO COOLANT

ON MODEL D6G PS, ATTATCH 3 LAMP SOCKETS OF

TEMP GAUGE, FUEL LEVEL GAUGE AND TACHOMETER.

HARNESS AS. N TO TORQUE CONVERTER TEMP GAUGE,

COOLANT TEMP GAUGE AND FUEL LEVEL GAUGE.

XMSN SW

9W-2150

NOTE C

145-BU-14

788-YL-14

CONN 12

XMSN SW

9W-2150

NOTE C

XMSN SW

9W-2150

NOTE C

145-BU-14

788-YL-14

145-BU-14

CONN 11

L10

201-BK

410-WH

L28

L25

322-GY

114-GN

200-BK-14

608-GN-14

447-PK

L26

BK-18

WH-18

450-YL

200-BK

TACHOMETER

SENDER

3E-7886

NOTE C

L28

L26

OPERATOR STATION

200-BK

450-YL

200-BK-18

607-PK

LAMP

7X-2058

TACHOMETER

NOTE D

IGN

SEND

GRD

322-GY

114-GN

FORWARD

HORN SW

3T-2357

123-WH-18

447-PK-18

441-OR-18

443-YL-18

447-PK-18

441-OR-18

443-YL-18

BR-18

BK-18

GN-18

TORQUE CONV

3E-7240

NOTE B

COOLANT

4W-0483

FUEL

9X-3496

TEMP GAUGE

LEVEL GAUGE

L27

123-WH-18

200-BK-18

200-BK-18200-BK-18

200-BK-18

607-PK607-PK 607-PK

607-PK

LAMP

7X-2058

LAMP

7X-2058

LAMP

7X-2058

IGN

SEND

GRD

IGN

SEND

GRD

IGN

SEND

GRD

– +

SIG

SERVICE

METER

108-8357

ALTERNATOR

FILTER

100-5052

BR-18

+ BATTERY

GROUND

SIGNAL

GN-18

BK-18

441-OR

443-YL

447-PK

123-WH

403-GN

200-BK

123-WH

CONN 10

L27L27

200-BK

600-BR

608-GN-14

607-PK-14

607-PK

200-BK-18

C N

607-PK-14

PANEL

LAMP

7N-9967

BASE

7G-9730

OPERATOR

MONITOR

PANEL

MOUNTING

BOLT

LAMP

BASE: 9D-3127

LAMP: 7N-5876

NOTE C

607-PK

VARIABLE HORSEPOWER

INDICATOR

L22

L10

ACTION

ALARM

9G-9813

410-WH

201-BK

439-YL-14

200-BK-14

CONN 8

L22

L10

L10L10

L25

145-BU-14

145-BU-14145-BU-14

OPERATOR STATION

L25

200-BK-14

NOTE: WITHOUT CAB FLOOD

LAMPS, PLUG HARNESS AS.

H INTO HARNESS AS. J

200-BK-14

145-BU-14

SOLENOID AS.

104-9258

NOTE C

ARC SUPPRESSOR

105-8827

NOTE C

200-BK-14

608-GN-14

FLOOD

LAMP

107-6689

VARIABLE

HORSEPOWER

CONN 1

L25

L24

L21 L21

OPERATOR STATION

447-PK

608-GN-14

200-BK-14

608-GN-14

200-BK-14

608-GN-14

447-PK

447-PK608-GN-14

608-GN-14

447-PK

200-BK-14

200-BK-14 200-BK

447-PK

200-BK

FUEL

SENDER

120-9587

HYDRAULIC

OIL TEMP SW

8N-2248

102-BU-14

116-BR-14

608-GN-14

607-PK-14

L23

CONN 2

L16

PK-18

BK-18

201-BK

404-YL

°T

307-OR

306-GN

NEUTRAL

START SW

9W-1581

NOTE B

CONN 6

L21

L20L20

L16

310-PU

308-YL-14

307-OR

105-BR

608-GN-14

607-PK-14

116-BR-14

102-BU-14

108-BU-14

310-PU

CONN 7

L14

307-OR

306-GN

Q A

306-GN

307-OR

NEUTRAL

START SW

9W-2150

NOTE C

121-YL

321-BR

BACKUP

ALARM

123-6449

BACKUP

ALARM SW

8T-9635

CONN 5

308-YL

L22

L20

308-YL

105-BR

307-OR

308-YL

START

AID SW

3T-3453

600-BR

607-PK-14

FRONT/DASH

LAMP SW

7T-3946

FLOOD

LAMP SW

7N-8000

200-BK

600-BR

PANEL

LAMP

7N-9967

BASE

7G-9730

MASTER

ACTION

LAMP

7N-1996

BASE

3T-0304

201-BK

411-PK

KEY

START SW

9G-7641

OFF

OPERATOR

MONITOR

TEST SW

7N-8001

200-BK

201-BK

411-PK

415-GN

CONN 9

201-BK

L15

200-BK

321-BR

L15

L16

L14

L11

RELAY PANEL

OPERATOR STATION

121-YL

321-BR

9X-7801

ELECTRONIC

MONITORING

SYSTEM

GROUND

UNUSED

TEST

FUEL PR

LAMP

ALARM

ENG OIL PR

HYD TEMP

ALTERNATOR

GROUND

+ BATTERY

UNUSED

COOL TEMP

TC OIL TEMP

UNUSED

L16

L15

201-BK

108-BU-14

102-BU-14

116-BR-14

607-PK-14

608-GN-14

105-BR

307-OR

308-YL-14

310-PU

201-BK

404-YL

201-BK

415-GN

411-PK

403-GN

413-BR

405-GY

406-PU

428-GY

201-BK

113-OR

410-WH

404-YL

201-BK

200-BK-14

200-BK

200-BK-8

200-BK

MODULE

GROUND

411-PK

415-GN

201-BK

788-YL-14

304-WH-8

207-BK

302-OR

101-RD-6

109-OR-6

200-BK-8

788-YL-14

109-OR-6

302-OR

207-BK

304-WH-8

101-RD-6

CONN 16

200-BK

123-WH

447-PK

403-GN

441-OR

443-YL

L6L6

L4L4

608-GN-14

322-GY

114-GN

447-PK

200-BK-14

201-BK

441-OR

403-GN

200-BK

201-BK

428-GY

406-PU

405-GY

413-BR

403-GN

201-BK

410-WH

L18

L19

L18

L19

L18

L14

OPERATOR STATION

306-GN

307-OR

L19

105-BR

102-BU-14

308-YL-14

310-PU

311-WH

788-YL-14

304-WH-8

207-BK

302-OR

101-RD-6

109-OR-6

203-BK

200-BK-14

114-GN

113-OR

123-WH

116-BR-14

108-BU-14

306-GN

101-RD-6

105-BR

108-BU-14

113-OR

116-BR-14

788-YL-14

123-WH

114-GN

200-BK-14

306-GN

109-OR-6

304-WH-8

308-YL-14

102-BU-14

203-BK

311-WH

310-PU

302-OR

207-BK

RD-00

DISCONNECT SW

7N-0718

FRAME

GROUND

BK-00

311-WH

310-PU

308-YL-14

102-BU-14

105-BR

200-BK

441-OR

201-BK

406-PU

413-BR

405-GY

403-GN

310-PU

311-WH

607-PK-14

322-GY

200-BK

CONN 15

CONN 14

L19

L18

310-PU

607-PK-14

L13

L12

L11

121-YL

108-BU-14

113-OR

116-BR-14

788-YL-14

123-WH

114-GN

112-PU-14

109-OR-14

BACKUP ALARM

SPARE

OPERATOR MONITOR

SIDE AND REAR FLOOD LAMPS

TACHOMETER (NOTE C)

FORWARD HORN

GAUGES AND SERVICE METER

VARIABLE HORSEPOWER (NOTE C)

RELAY PANEL

10A

FUSE (2)

3K-8782

BREAKER

9S-0173

112-PU

304-WH

308-YL

112-PU-14

105-BR

101-RD

109-OR

109-OR-8

101-RD-6

101-RD-14

109-OR-6

306-GN

200-BK-14

200-BK

200-BK-14

BK-18

207-BK

302-OR

310-PU

311-WH

203-BK

FUSE

NOTE A

FUSE

HOLDER (9)

4K-5122

L13 L13

L12

ALT

MAIN RELAY

3T-0376

304-WH-8

308-YL-14

109-OR-8

109-OR-6

DIAGNOSTIC CONNECTOR

CONN 4

START RELAY

118-3534

304-WH

L13

L11

105-BR

101-RD-6

102-BU-14

FRONT DASH DOME

105-BR

KEY

60A

10A

608-GN-14

200-BK-14

608-GN-14

200-BK-14

CAB FLOOD

LAMP

107-6689

CAB FLOOD

LAMP

107-6689

NOTE: WITHOUT CAB FLOODS,

PLUG HARNESS AS. H INTO

HARNESS AS. J

WITH CAB FLOODS PLUG

HARNESS AS. H INTO

HARNESS AS. R

L24

608-GN-14

200-BK-14

FLOOD

LAMP

107-6689

CONN 3

203-BK

12V BATTERY

3T-5760 STD

9X-3404 ATCH

12V BATTERY

3T-5760 STD

9X-3404 ATCH

BK-00

RD-00

NEGPOS NEGPOS

201-BK

428-GY

443-YL

TORQUE CONV

OIL TEMP

SENDER

3E-6453

NOTE B

CONN 13

ATCH BB-201

ATCH

B-3004E-2604

F-4038P-8237

F-4005Y-2057

F-4006T-1992

F-400131-8712

NOTE CC-400124-6356

A-3079F-4337

B-2034N-5092

WIRE AS.

F-900127-9599

NOTE CE-800125-0350

NOTE BD-800124-6355

B-600124-6462

NOTE CB-7006Y-0269

NOTE CA-5005Y-1410

NOTE CA-600124-6461K

00 A-9/F-9124-6354J

C-902124-7423H

NOTE CA-400130-3086G

C-600124-6460F

NOTE BC-400124-6353E

F-101124-7424D

D-600124-5673C

D-302124-6463B

03 E-4124-5243A

IDENT PART NO. LOC

HARNESS AS.

NOTECHG

CIRCUIT GROUPING

DESIGNATION

ATCH WIRE, CABLE,

COMPONENT

CIRCUIT NOT CONNECTED

CIRCUIT CONNECTED

BLUE

GREEN

BLADE, SPADE, RING,

OR SCREW TERMINAL

INTERNAL ELECTRICAL

CONNECTION TO SURFACE

OF COMPONENT

ELECTRICAL CONNECTION

CONNECTOR

SYMBOL DESCRIPTION

BROWN

PURPLE

GRAY

BLACK

COLORABBREV

PINK

YELLOW

ORANGE

WHITE

RED

4D-6565HH

CABLE AS.

TO MACHINE STRUCTURE

NOTE E: FOR ATCH D6G PS USE 100-5047

NOTE D: FOR D6F SR USE 127-4251

FOR D6G SR USE 3E-5092

NOTE C: FOR USE ON D6F SR AND D6G SR ONLY

NOTE B: FOR USE ON D6G PS ONLY

NOTE A: FUSES 5A: 2S-6024, 10A: 3K-8782

UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAGE

COMPONENTS ARE SHOWN INSTALLED ON A FULLY

OPERABLE MACHINE WITH THE KEY AND ENGINE OFF

THIS SCHEMATIC IS FOR THE D6G PS, D6F SR, D6G SR

TRACTORS (134-4062 CHG00)

AND XMSN SHIFTER IN NEUTRAL

D60402

FLOOD

LAMP

107-6689

200-BK-14

607-PK-14

L14

9 8 7

8 7

5 4

6 5 4 3