35 37 CONN 4 39 31
740 Ejector, 740 GC, and 745 Articulated Truck Electrical System
CONN 7 28
CONN 2
38 29
CONN 21
740 Ejector: 3F7316-UP
15 40 10
34
13
14
740 GC: 3F8108-UP
745: 3F61560-UP
CONN 5
41
12
43
CONN 3
19
CONN 1
11
CONN 12 16
CONN 10
23
46
Volume 1 of 3: Cab
27
30
CONN 6
CAB - FRONT VIEW
21
7
8
20
PUBLICATIONS.CAT.COM
CAB - REAR VIEW
CAB - TOP VIEW Harness And Wire Electrical Schematic Symbols
32
48
52
51
60
63
56
65
62
Symbols
T
Pressure Symbol
Temperature Symbol
Level Symbol
Flow Symbol
Circuit Breaker Symbol
Symbols and Definitions Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it.
Component Location - Volume 1
47 Connector Location - Volume 1
24 17 67
Connector Number
55 59
18
5
61
58 53
3 50
Machine Location
Actuator - Water Valve
B-7
1
Schematic Location
Alarm - Action
B-10
Block - Fuse
I-11
Blower As
B-7
49 CONN 18
1
CONN 19
Machine Location
Resistor - CAN 2 Term A
G-16
35
2
Resistor - Green Lamp
G-15
37
3
Resistor - IAC Override
C-4
38
4
Resistor - Red Lamp
G-15
39
D-2, E-15
Coil - MSS Exciter 1
E-16
5
Sensor - A/C Compr Discharge Press
B-7
40
CONN 2
F-2, E-15
Compressor - Air Seat
G-12
6
Sensor - A/C Compr Suction Press
C-7
41 42
CONN 3
D-15
Control - A5M4 Chassis
J-7
7
Sensor - Cab Air Temp
B-7
CONN 4
C-15
Control - A5M4 Transmission
J-6
8
Sensor - Cab Vent Air Temp
A-7
43
CONN 5
J-13
Control - Payload
F-13
10
Sensor - Evap Coil Temp
B-7
44
CONN 6
G-13
Control - Telematics A5N2
F-3
11
Sensor - Throttle
C-10
45
CONN 7
E-13
Convertor - 24V 12V (10A)
F-13
12
Sensor - Washer Fluid Level
B-8
46
CONN 8
D-13
Convertor - 24V 12V (15A) Seat
F-13
13
Socket - 12V Power
B-10
47
CONN 9 - DIAGNOSTIC
G-9
Diode - Door Sw Wakeup
H-9
14
Switch - Air Condr Operator
H-16
48
CONN 10
A-9
Diode - Key Sw
H-9
15
Switch - Assisted Hoist Enable
C-16
49
CONN 11
H-9
Diode - Key Sw Wakeup
G-9
16
Switch - Door
D-16
50
CONN 12
H-9
Display - Indication
D-10
17
Switch - DPF Regen Force
J-16
51
CONN 13
B-5
Display - Secondary
C-13
18
Switch - Economy Mode
I-16
52
CONN 14
I-4
Flasher
F-16
19
Switch - Front Work Light
E-16
53
CONN 15
I-4
Ground - ECM and Fuse
G-9
20
Switch - Hazard Light
D-16
54
CONN 16
H-4
Ground - Headliner Switch
J-13
21
Switch - Headlights
F-16
55
CONN 17
F-4
Ground - RH Console
F-16
22
Switch - Heated Mirror
I-16
56
CONN 18
E-4
Ground - Washer
B-9
23
Switch - Hood
F-16
57
CONN 19
D-4
Heated Mirror - Aux
D-15
24
Switch - Horn
B-16
58
CONN 20
J-2
Key Reader
C-16
25
Switch - Key Start
E-16
59
E-2
Lever - Shift Hoist (Ejector)
D-16
26
Switch - LH Rear View Mirror
I-16
60
B-8
27
Switch - R ACS Platform Light
E-16
61
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.
CONN 9
Schematic Location
Component
CONN 1
CONN 21
54
57
Schematic Location
Component
Motor - Front Washer Motor - Front Wiper
C-16
28
Switch - Rear Wiper Control
G-16
62
Motor - LH Rear Wiper
G-15
29
Switch - RH Rear View Mirror
J-16
63
Motor - Rear Washer
B-8
30
Switch - Seat Belt
G-12
64
Motor - RH Rear Wiper
G-15
31
Switch - Sec Steer
H-16
65
Panel - HVAC
G-16
32
Switch - Tertiary Brake
C-16
66
Pedal As - Brake
C-10
33
Switch - Wash Wiper Turn
B-16
67
Relay - Key Sw
H-11
34
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 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
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 and Wire Symbols Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).
Harness Identification Letter(s): (A, B, C, ..., AA, AB, AC, ...)
L-C12 3E-5179
AG-C4 111-7898
L-C12 3E-5179
1
Part Number: for Connector Plug
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 Receptacle
2 5A Plug
CONN 16 33
66
26
CONN 20
CONN 11
CONN 13
42
4
44
CONN 17
CAB - INTERIOR VIEW
Receptacle Pin or Socket Number
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.
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
*Wire gauge is shown in AWG (American Wire Gauge) but could also be shown in metric denoted with mm
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CAB - RH VIEW
22
2 25
CONN 15 CONN 14
45
64
6
CAB - OPERATOR SEAT
(Dimensions: 56 inches x 35 inches)
CONN 8
42 Page,
M0116181-02 VOL 1 of 3
M0116181-02 June 2021