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