Cat C3.4B Diesel Engine Electrical System Schematic

CAT C3.4B Industrial Engine Electrical System

FPT INDUSTRIAL

CAT C3.4B Engine Parts Contact phone: 269 673 1638 Email: EngineParts@HeavyEquipmentRestorationParts.com Alternate email: engineparts2@gmail.com Website: www.CATC34B.com Related website: www.HeavyEquipmentRestorationParts.com

Printed in U.S.A.

SCHEMATIC SYMBOLS AND DEFINITIONS INTERNAL PASSAGEWAYS

VALVES ENVELOPES

Two Position

One Position

Three Position

PORTS

Two-way

Three-Way

FLOW IN ONE DIRECTION

FLOW ALLOWED IN EITHER DIRECTION

Infinite Positioning

Two Position

PARALLEL FLOW

PUMPS

Unidirectional

Three Position

BASIC HYDRAULIC COMPONENT SYMBOLS

FIXED DISPLACEMENT

CROSS FLOW

Pump or Motor

Variability

Fluid Conditioner

Spring (Adjustable)

Spring

Pressure Compensation

Control Valves

Line Restriction (Variable)

Restriction

Line Restriction (Fixed)

Line Restriction Variable and Pressure Compensated

2-Section Pump

Attachment

Pump: Variable and Pressure Compensated

Bidirectional

VARIABLE DISPLACEMENT NON- COMPENSATED

CYLINDERS

Four-Way

Unidirectional

Bidirectional

CONTROL AB

AB

P T

P T

Single Acting

FIXED DISPLACEMENT

Shifted Position

Normal Position

MOTORS

Double Acting

Infinite Position

CHECK

ACCUMULATORS Basic Symbol

Spring Loaded

Shuttle

Unidirectional

VARIABLE DISPLACEMENT NON- COMPENSATED

Pilot Controlled

Spring Loaded Gas Charged

Unidirectional

PILOT CONTROL

Bidirectional

ROTATING SHAFTS

RELEASED PRESSURE

External Return

Bidirectional

Unidirectional

Internal Return

Bidirectional

REMOTE SUPPLY PRESSURE

Simplified

Complete

MAIN AUX.

Internal Supply Pressure

Hydraulic Pneumatic Energy Triangles

COMBINATION CONTROLS LINES Solenoid

Solenoid or Manual

Solenoid and Pilot

Solenoid and Pilot or Manual

Servo

Thermal

Detent

Crossing

MEASUREMENT Joining

MANUAL CONTROL

Push-pull Lever

Manual Shutoff

Temperature

Pressure

Flow

FLUID STORAGE RESERVOIRS

General Manual

Push Button

Pedal

Spring

Vented

Pressurized

Return Above Fluid Level

Return Below Fluid Level

ELECTRICAL SYMBOLS

HYDRAULIC SYMBOLS - ELECTRICAL

M

G

T

Transducer (Fluid)

Transducer (Gas / Air)

Generator

Electric Motor

Pressure Switch

Pressure Switch (Adjustable)

Temperature Switch

Electrical Wire

Pressure Switch

Temperature Switch

BASIC ELECTRICAL COMPONENT SYMBOLS

Level Switch

Flow Switch

Circuit Breaker

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

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.

L-C12 3E-5179

AG-C4 111-7898

1

Part Number: for Connector Plug

2

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

The grounded wire is fastened to the machine.

Receptacle Pin or Socket Number

Plug

Ground (Case): This indicates that the component does not have a wire connected to ground.

It is grounded by being fastened to the machine.

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

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

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.

T

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: 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.

L-C12 3E-5179 5A Fuse (5 Amps)

9X-1123

Component Part Number

325-AG135 PK-14 Harness identification code: This example indicates wire group 325, wire 135 in harness "AG".

Wire Gauge Wire Color

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.

8

F

7

6

5

WASTEGATE REGULATOR RETURN

1

INJECTOR 1

2 3 4 6 7

TV POSITION SENSOR POWER +5V NRS POSITION SENSOR POWER +5V

8 9

SENSOR POWER +5V

10 FRP SENSOR POWER +5V 11 EGP SENSOR POWER +5V 12 CAM SPEED SENSOR POWER +5V 13 CAM SPEED SENSOR SIGNAL 14 FUEL METERING VALVE SUPPLY INJECTOR SUPPLY CYL 1 INJECTOR SUPPLY CYL 4

2

1

ECM 15

1

ECM 60

2

FUEL METERING VALVE

10 PIN CONNECTOR

5 OIL PRESSURE SWITCH

3

F

ELECTRONIC CONTROL MODULE (ECM) J2 INJECTOR SUPPLY CYL 3 INJECTOR SUPPLY CYL 2

4

ECM 6

A B H G

INJECTOR 2

D C E H

INJECTOR 3

J K

INJECTOR 4

15 16 17 18 19

OIL PRESSURE SWITCH

ECM 28 ECM 14 ECM 13

1

ECM 26 ECM 41 ECM 11

1

SECONDARY SPEED/TIMING SENSOR

2 3

FUEL RAIL PRESSURE

2

SENSOR

3

ECM 59

1

ECM 44

2

PRIMARY SPEED/TIMING SENSOR

3

20 21 22 ENGINE FUEL TEMP GROUND 23 NRS POSITION SENSOR GROUND 24 SENSOR GROUND 25 FRP SENSOR GROUND 26 EGP SENSOR GROUND 27 CAM SPEED SENSOR 28

E

29 30 INJECTOR RETURN CYL 3 31 INJECTOR RETURN CYL 1 32 33 THROTTLE VALVE RETURN 34 NRS RETURN VALVE 35 36 TV POSITION SENSOR 37 ENGINE FUEL TEMP SIGNAL 38 NRS POSITION SENSOR SIGNAL PRESSURE SENSOR SIGNAL FRP SENSOR SIGNAL EPG SENSOR SIGNAL CRANK SPEED SENSOR RETURN INJECTOR RETURN CYL 2 INJECTOR RETURN CYL 4

D

THROTTLE VALVE SUPPLY NRS VALVE SUPPLY

TV POSITION SENSOR SIGNAL TEMPERATURE SENSOR SIGNAL COOLANT TEMP SENSOR SIGNAL COOLANT TEMP SENSOR GROUND CRANK SPEED SENSOR SUPPLY

ECM 57 ECM 58

1

ECM 38 ECM 23

1

COOLANT TEMPERATURE

2

SENSOR

ENGINE FUEL TEMPERATURE

2

ELECTRONIC CONTROL MODULE (ECM) J2

SENSOR

1

ECM 25

2

ECM 10 ECM 40

INTAKE MANIFOLD AIR PRESSURE SENSOR

SENSOR GROUND TEMPERATURE SENSOR SIGNAL SENSOR POWER +5V PRESSURE SENSOR SIGNAL

3 4

62 PIN CONNECTOR ECM ECM ECM ECM ECM ECM ECM

60 6 14 26 41 11 28

1 2 3 4 5 6 7 8

ECM ECM ECM ECM

59 44 58 13

9 10 11 12

ECM ECM ECM ECM ECM ECM ECM ECM ECM ECM ECM

58 57 23 38 10 40 25 55 12 27 43

13 14 15 16

ECM 15

39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

17 18 19 20

ECM 58 JI ECM 81 JI ECM 82 ECM 4 SWITCHED BATTERY +

FUEL METERING VALVE RETURN 60 61 62

ECM 50 ECM 35

ECM 24

35 36 37 38

ECM 49 ECM 34

39 40 41 42 43

ECM 8 ECM 53 ECM 37

GLOW PLUG CONTROL UNIT 8 3 41 4

J1

25 26 27 28 29 30 31 32 33 34

ECM 9 ECM 39

C

21 22 23 24

6 1 7 2

ECM 55 ECM 58

ECM 15 ECM ECM ECM ECM ECM

60 6 14 26 41

19 6 17 18

1 2 3 4

INTAKE MANIFOLD AIR TEMPERATURE SENSOR

1 2

ECM 12 ECM 27

28 59 44 58 13 58 57 23 38

1 2

ECM 43

EXHAUST PRESSURE SENSOR

3

JI ECM 82

1

JI ECM 81

2

EXHAUST TEMPERATURE SENSOR

D SWITCHED BATTERY + ECM 4

ECM 10 ECM 40 ECM 25 ECM 55 ECM 12 ECM 27 ECM 43 ECM 58 JI ECM 81 JI ECM 82 ECM 4 SWITCHED BATTERY + ECM 50

1

WASTE GATE REGULATOR

2

ECM 50 ECM 35

1 5 6

ECM 9 ECM 39

2

ECM 24

4

NOx REDUCTION SYSTEM

Industrial Engine J1 Connections

VALVE

3

ECM 35

ECM 35 ECM 39 ECM 24

ECM 49

6

ECM 34 ECM 8 ECM 53

2

ECM 37

3

1 2 3

BATTERY + VIA MAIN RELAY (a) BATTERY -1 BATTERY + VIA MAIN RELAY (b)

4 5 6

BATTERY -2 BATTERY + VIA MAIN RELAY (c)

7 8 9 10 11 12 13

INTAKE THROTTLE VALVE

1

5

4

ECM 49

ECM 8 ECM 53 ECM 37

48 49 50 51 52

BATTERY -3 OXYGEN SENSOR HEATING STARTER REQUEST PTO MODE - ON/OFF PTO MODE - RESUME

53 54 55 56 57 58

COOLANT PRESSURE SWITCH RESERVE SENSOR SUPPLY 1 RESERVE SENSOR SUPPLY 2

59 60

14 15

DPF DIFFERENTIAL SENSOR POWER RESERVE SENSOR SUPPLY 3

16 17

THROTTLE 1 POWER (+5V) THROTTLE 2 POWER FAN SPEED SENSOR 2 SUPPLY AIR INLET TEMPERATURE SIGNAL AIR INLET SENSOR GROUND

18 19 20

ECM 34

21 22 23 24

FAN SPEED 2 GLOW PLUG UNIT FEED BACK SIGNAL

25 26 27 28

CAN C 1 (LOW) ENGINE SPEED OUTPUT SIGNAL STARTER RELAY LOW SIDE

29 30 31 32 33

(+5V)

WAIT TO START LAMP SHUTDOWN LAMP GLOW PLUG RELAY STARTER RELAY HIGH SIDE IGNITION KEYSWITCH + TORQUE LIMITATION (MULTIPLE STATE SWITCH) MPSTS 1 / SWITCH TO BATTERY + MPSTS 4 DPF DIFF PRESSURE SENSOR SIGNAL MPSTS 2 ANALOG THROTTLE 1

61 62

ANALOG THROTTLE 2

63 64 65 66

OXYGEN SENSOR VOLTAGE SIGNAL OXYGEN SENSOR CURRENT PUMP

67 68 69 70

CAN 2 (HIGH) CAN C 1 (HIGH)

DPF DISABLE LAMP REVERSE OUTPUT 1

THROTTLE ARBITRATION SWITCH

RESERVE GROUND 5 REGENERATION INHIBIT PWM THROTTLE 1 ISO K LOW OIL PRESSURE LAMP FUEL FILTER HEATER RELAY DO NOT CONNECT 11 (OUTPUT INSTEAD OF LOW VOLTAGE CONTROL) EVAPORATOR RELAY FAN REVERSE REGENERATION ACTIVE LAMP

MAIN RELAY OXYGEN SENSOR 1 HEATING DISCREET STAGE (OPTIONAL)

76

WATER IN FUEL SWITCH SIGNAL PTO MODE - RAISE

77 78 79 80

IDLE VALIDATION SWITCH 1/CUSTOMER FAN OVERRIDE TORQUE LIMITATION GROUND (MULTIPLE STATE SWITCH)

AIR SHUT OFF

CYLINDER 4 GLOW PLUG CYLINDER 3 GLOW PLUG

60 61

CYLINDER 2 GLOW PLUG

34

FAN SPEED SENSOR 2 GROUND

CYLINDER 1 GLOW PLUG

35 36 37 38 39

RESERVE GROUND 4 DPF DIFFER EN AL PRESSURE SENSOR GROUND RESERVE GROUND 6 THROTTLE POSITION SENSOR 1 GROUND

81 82 83 84 85

THROTTLE POSITION SENSOR 2 GROUND

86

INLET TURBINE TEMPERATURE SENSOR (EXHAUST) EXHAUST GAS TEMPERATURE SENSOR 2 GROUND EXHAUST GAS TEMPERATURE SENSOR 2 SIGNAL OXYGEN SENSOR GROUND OXYGEN SENSOR CURRENT ADJUST

40

RESERVE GROUND 3

87

MPTS3/ SWITCH TO GROUND

41

GLOW PLUG CONTROL GROUND

88

RESERVE INPUT 1

42

IDLE VALIDATION SWITCH 2

89

43

REGENERATION FORCE/SWITCH TO BATTERY

90

44

USER DEFINED SHUTDOWN SWITCH/SWITCH TO BATTERY

91

LIN INTERFACE PRE-SUPPLY PUMP

45

CAN 2 (LOW) CAN 1 (HIGH)

92

WARNING LAMP

93

ENGINE BRAKE ACTUATOR

CAN

94

DPF LAMP

CYLINDER 1 GLOW PLUG

CYLINDER 2 GLOW PLUG

GROUND 81 SIGNAL 82

46 47

C

71 72 73 74 75

57 58

GLOW PLUG CONTROL RETURN 22 GLOW PLUG CONTROL GROUND 41 GLOW PLUG CONTROL 52 EXHAUST TEMP SENSOR EXHAUST TEMP SENSOR

25 55 10 40

COMBINED INLET AIR TEMPERATURE AND AIR PRESSURE SENSOR

ECM 11 ECM ECM ECM ECM ECM ECM ECM ECM ECM

E

62 PIN CONNECTOR

SENSOR

PTO MODE - LOWER STARTER HSD DIAGNOSTIC GROUND (OPTIONAL)

1 (LOW)

DO NOT CONNECT 10 (PARALLEL A43) EXHAUST GAS TEMPERATURE SENSOR 1 GROUND EXHAUST GAS TEMPERATURE SENSOR 1 SIGNAL INLET TURBINE TEMPERATURE SENSOR GROUND (EXHAUST)

PWM THROTTLE 1 GROUND

SWITCHED BATTERY + (WASTEGATE REGULATOR) BATTERY +

B

B

CYLINDER 3 GLOW PLUG

CYLINDER 4 GLOW PLUG

(+) BATTERY

SYMBOL

(+) BATTERY SWITCHED STARTING CIRCUIT

CIRCUIT NOT CONNECTED

SENSOR / ACTUATOR SUPPLY

A

ELECTRICAL CONNECTION TO MACHINE STRUCTURE

SIGNAL TO ECM CONTROL (POSITIVE) FROM ECM CONTROL (RETURN) FROM ECM CAT DATA LINK H#

J1939 DATA LINK

8

7

6

5

4

DESCRIPTION CIRCUIT CONNECTED

(-) BATTERY / SENSOR RETURN

RD

COLOR RED

WH

WHITE

OR

ORANGE

YL

YELLOW

INTERNAL ELECTRICAL CONNECTION TO SURFACE OF COMPONENT

PK

PINK

CONNECTOR

BK

BLACK

CIRCUIT GROUPING DESIGNATION

RS-232/RS-485 DATA LINK

ATCH WIRE, CABLE, COMPONENT

ETHERNET

SPLICE

HIGHWAYS

BLADE, SPADE, RING OR SCREW TERMINAL

3

ABBREV

GY

GRAY

PU

PURPLE

BR

BROWN

GN

GREEN

BU

BLUE

A

THIS SCHEMATIC IS FOR THE C3.4B INDUSTRIAL ENGINE ELECTRICAL SYSTEM MEDIA NUMBER: KENR9132-02

2

Components are shown installed on a fully operable machine with the key and engine off, transmission shifter in neutral and with parking brake set.

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

Note: Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.

1

ECM VIEW ALL CALLOUTS

ECM

J1

J2

J1

J2

FRONT VIEW VIEW ALL CALLOUTS

ALTERNATOR

INTAKE THROTTLE VALVE

LOCATION OF FUEL MANIFOLD PRESSURE SENSOR

FUEL MANIFOLD PRESSURE SENSOR

INTAKE THROTTLE VALVE

COOLANT TEMPERATURE SENSOR

COOLANT TEMPERATURE SECONDARY SPEED/TIMING SENSOR

GLOW PLUG CONTROL UNIT

GLOW PLUG CONTROL UNIT

BREATHER HEATER

INLET AIR TEMPERATURE SENSOR

HARNESS CONNECTORS VIEW ALL CALLOUTS

10 PIN CONNECTOR

62 PIN CONNECTOR

62 PIN CONNECTOR

10 PIN CONNECTOR

4

12

20

28

36

44

52

5 9 62

1

9

17

25

33

41

49

57 60

LEFT SIDE VIEW VIEW ALL CALLOUTS

10 PIN CONNECTOR

62 PIN CONNECTOR

FUEL TEMPERATURE SENSOR

OIL PRESSURE SWITCH

FUEL METERING VALVE

HARNESS CONNECTION PLUGS

EXHAUST TEMPERATURE SENSOR

PRIMARY SPEED/TIMING SENSOR

WATER IN FUEL SWITCH

EXHAUST TEMPERATURE CONNECTOR

CAT C3.4B ENGINE PARTS FPT INDUSTRIAL ENGINE PARTS Phone 269 673 1638 email: engineparts2@gmail.com website: www.CATC34B.com

RIGHT SIDE VIEW NOx REDUCTION CONTROL VALVE

VIEW ALL CALLOUTS

OXYGEN SENSOR

INLET MANIFOLD PRESSURE AND TEMPERATURE SENSOR EXHAUST TEMPERATURE SENSOR CONNECTOR EXHAUST PRESSURE SENSOR WASTE GATE REGULATOR NRS CONTROL VALVE

STARTING MOTOR

WASTE GATE REGULATOR CONTROL VALVE

DFP DPF TEMPERATURE SENSOR DIESEL OXIDATION CATALYST TEMPERATURE SENSOR

OUTLET CONNECTION FOR DIFFERENTIAL PRESSURE SENSOR

INLET CONNECTION FOR DIFFERENTIAL PRESSURE SENSOR

WALL FLOW DFP

DIESEL OXIDATION CATALYST TEMPERATURE SENSOR

DIFFERENTIAL PRESSURE SENSOR

THROUGH FLOW DFP

TEMPERATURE SENSOR AFTER DOC