8/18/2019 CT13 with SCR Engine Wiring Harness
1/4
© 2015 Caterpillar, Inc All marks are trademark
UENR4928-03
CT13 with SCR
Engine Wiring HarnessPage 1 of 4
3
6 4
1
1 31 3 1
4
3
24 24 2
1 3
4 2
1 2
23
41
2
3
4
1
2
3
4
14
2
3
1
4 2
1 3
ECT2
IAHFS
1 21 2
2 11 2
1 3 1 2 1
2
CCOSS-LCCOSS-H
AATTOSS-H
TOSS-L
IAHR Diag
IAHR CTLIAHR Enable
1
2
CKP-LCKP-H
CMP-L
FPCV 12V
FPCV
VREF6
FRP
SIG GND
SIG GND
EOL
SIG GND
SIG GND
EOPVREF5
SIG GND
EOT
IAT
SIG GND
HS
VREF2
TC2CIP
VREF4
TC2CIT
SIG GND
SIG GND
IMT
IMP
SIG GND
EBPVECM PWR OUT 2
ECM PWR OUT 3
TC2WC
VREF3
TC1TOP
SIG GND
ETP
ETC
EGRC
EGRGTSIG GND
ECM PWR OUT 2
ECB1
ECM PWR OUT
ECB2
SIG GND
ECT1
SIG GND
ECT2
CMVECM PWR OUT 2
CFV
ECM PWR OUT 3
IAHFS
ECM PWR OUT 2
ECM E1
Connector
1
24
73
96
ECM E2
Connector
5 16
1 12
11
6
Twisted p
Red B+ (BatteRed High sideBlue VREF (5GreenGreen A/C Spee
Signal
Brown Data Com
BlackBlackPurple Injectors
GND (GrBlack Low side
Color code for schemat
Brown PWM Sig
INJ1 H
INJ1 LINJ2 H
INJ2 L
INJ3 H
INJ3 L
INJ4 H
INJ4 L
INJ5 H
INJ5 L
INJ6 H
INJ6 L
ECM 96-Pin
E2 Connector Under Valve Cover
High
High
High
High
High
High
Fuel Inject
6 5 4
E2-05E2-12E2-11E2-06E2-04E2-13E2-03E2-14E2-02E2-15E2-01E2-16
1 4 1 4
CACOT Air Control ValveTC2WC / EBPV /
TC1TOP
ETV IMP IMT TC2CIS
Air Management System
EGR System Engine Compression Brake Engine Cooling System Intake
Air Heater
Lube Oil System Fuel System Timing System
ECM 96-Pin
E1 Connector
(300 series)
SIG GND
FDP
VREF5
EOT EOP EOL FRP FDP FPCV CKP
CMP
ECT1 CMV CFV
ECB Harness
Connector
EGRGT ECB1 ECB2EGRV
4321
2 1
CCOSS
610
5 1
! WARNING
To prevent personal injury or death, read allin the “Safety
Information” section of CT13
Operation and Maintenance Manual beforeany diagnostic
procedures. Information on th
at the time of publication. Updates may havintroduce product
improvements and techniSee correct truck service manual for
chassi
Chassis wiring and connectors are for referYour vehicle’s
specific chassis wiring and co
For detailed circuit information, refer to the f
documents:Chassis Electrical Circuit Diagram Manu
To 21-Pin Engin
Connector on P
1 15
7 21
14
8
E1-16E1-40
E1-17E1-41
E1-25E1-73E1-22E1-35E1-81E1-88E1-34E1-21E1-07E1-31E1-45
E1-64E1-46E1-19E1-10E1-82E1-63E1-36E1-38E1-23E1-59E1-85E1-79E1-58E1-12E1-55E1-83E1-37E1-18E1-86
E1-13E1-43
E1-04E1-54E1-26E1-52E1-89E1-61
E1-20E1-57E1-75E1-77E1-94E1-95E1-05E1-47E1-50E1-49E1-68E1-14E1-44E1-71E1-48E1-28E1-74E1-24E1-03E1-29E1-42E1-39E1-15E1-67E1-72E1-96E1-09E1-33
PrivateCAN
ECM
BARO
58-Pin C2
Chassis(200)
16-Pin E2
Engine(400)
58-Pin C1Chassis
(100)
96-Pin E1Engine
(300)
CMP-H
3
6 4
1
HS/IAT
21-Pin Engine
Interface Connector
3114
131920
4
211617
12
52
15
VREF2
CACOT
EOT2
GND
SWBAT
EGRP
GND
SWBAT
3
CAN-H (YL)CAN-L (GN)
8/18/2019 CT13 with SCR Engine Wiring Harness
2/4
© 2015 Caterpillar, Inc All marks are trademark
UENR4928-03
CT13 with SCRChassis Wiring HarnessPage 2 of 4
1
5
2
6
SART
A
D
A
F
1 2
1
3
6
41 2
Ignition Switch
B+
A
P
1
9 8
6
2
7
5
21
Data Link
Connector
O2S
ECM C1 / C2
Connector
13
27
19
5
646
58
WIF AAT EFCEFC
Option 2 Speed
Electric Fan Installed in Metal Tank
Installed in
Plastic Tank
Option 1 Variable
Electric Fan
ECL
IAHR
Intake Air Heater O2 Sensor
BCM
ABS
Module
ECM
C1 and C2 Connectors
To SWBAT on Pag
To Public CAN on P
Brake Pedal
Parking Brak
Starter Motor
Cruise Contr
Clutch Pedal
Driving Operated Controls
Engine Coolant Level
B+
B+
B+
B+
KAPWR
SWBAT
GND
GND
GND
GND
SIG GND
SIG GND
WIFEFC
VREF4
SIG GND
EFS
ECM PWR OUT 3
WIFL
DEFL
ECM PWR OUT 2
ECL
ECL GND
APP2
SIG GND
VREF5
VREF1
SIG GND
APP1
CAN-H (YL)
CAN-L (GN)
O2 Heater GND
PUMPCUR
TRIMRES
VIRGND
NVOLT
ECM PWR OUT 1
ECM PWR OUT1
EGRP
MAF GNDMAF
EOT2
RPAS
AESS
XCS
WTSL
RSL
AWL
RAPP GND
RAPP 5V
RAPP
ERO
MIL
TACH
VSS CAL
RAS
SCS
RVAR
RPRE
Body Builder Connector 2
Body Builder
Connector 1
Connector 1
Connector 2
JH
F
DE
CB A
G
JH
F
DE
CB A
G
GND
GND
SWBAT
SWBAT
SWBAT
AAT
CAN-H (YL)
CAN-L (GN)
IAHR Diag
IAHR EnableIAHR CTL
E
F
G
C
A B
J
H
120 Ω
D
Electronic Gauge Cluster
MPH RPM
To Private CAN on
To GND on Page 3
ECM C2
Connector
B o d
y B u i l d e r C i r c u i t s
C2-22C2-33C2-36C2-39C2-40C2-53C2-26
C2-27
COO
BNC
DDS
PBS
EB SW1
EB SW2
TSAS
ACD SW
Twisted pa
Red B+ (BatteryRed High side dBlue VREF (5 VoGreenGreen A/C
Speed
Signal
Brown Data Comm
BlackBlack
GND (GrouBlack Low side d
Color code for schematic
Brown PWM Signa
GND
CAN-H (YL)
CAN-L (GN)
CAN-H (YL)
CAN-H (YL)
CAN-L (GN)
WIFL
DEFL
SWBAT
CAN-L (GN)
SWBAT
Public CAN
Public CAN
PublicCAN
PrivateCANPrivateCAN
F K
E A
K F
A E
Run Crank
To 21-Pin Engine Interface
Connector on Page 1
1
7
14
8
TCM
C1-01C1-03C1-05
C1-19C1-17C1-02C1-04C1-06
C1-49C1-08C1-58
C1-32C1-42
C1-13C1-37C1-24
C1-11C1-50C1-36C1-23
C1-34C1-47C1-52C1-53C1-46C1-33C1-39C1-40
C1-44C1-15
C1-18
C2-01
C2-02
C2-48C2-35C2-52C2-23C2-30C2-09
C1-57C1-56
C2-55
C2-54
C1-21C1-54
C2-16
C2-17C2-28C2-15C2-10C2-13C2-46
C2-43C2-34
C2-37
C2-14
C2-49C2-47
C1-30
IAHFI
-
+
-
+
Batteries
To 15-Pin Underhood
PDM Connector on Page 3
PDM
! WARNING
To prevent personal injury or death, read all sa
in the “Safety Information” section of CT13 witOperation and
Maintenance Manual before doany diagnostic procedures. Information
on this
at the time of publication. Updates may have bintroduce product
improvements and technica
See correct truck service manual for chassis wChassis wiring and
connectors are for referen
Your vehicle’s specific chassis wiring and conn
For detailed circuit information, refer to the foldocuments:
Chassis Electrical Circuit Diagram Manual
Engine Fan
B AB A
Coolant
Level
Module
Manual Transmission
Transmission OutputShaft Speed Sensor
TOSS-LTOSS-H
15
21
17192021
16
12
2143
15
814
975
13
21-Pin Engine
Interface Connector (6033)
8/18/2019 CT13 with SCR Engine Wiring Harness
4/4
© 2015 Caterpillar, Inc All marks are trademark
UENR4928-03
CT13 with SCR Aftertreatment DiagramPage 4 of 4
Decomposition Reactor Tube
Diesel OxidationCatalyst (DOC)
AFTFIDPFDP / DPFOP
Private CAN
Public CAN
DEF Level GaugeDEF Level
Warning Lamp
Engine Control Module(ECM)
Private CAN
ACM
AFT Fuel Supply Module
AFTPAV
Engine
1 /4 3 /4
DEF
1/2
F
AFT Regen LampHEST Lamp
DEF Line Heater Relay
DEFTH
DEF Supply Module
Supply
(Inlet)
Return
(Backflow)
Pressure
(Outlet)
DEF RevertingValve (DEFRV)
DEF Supply Pump (DEFSP)
and Temperature Sensor
DEF Line
Pressure (DEFLP)
DEF Supply ModuleHeater (DEFSMH)
Diesel Particulate Filter (DPF) Selective Catalyst Reduction
(SCR) Catalyst
NO InSensor
xNO Out Senx
D EF SL H D EF RL H DEFPLH
DEF
DOC / DPFTemperatureModule
SCRTemperatureModule
AFTFP AFTFSO
DEFTL
DEFD
SCRIT SCROTDPFOTDPFIT
DOCIT
ECMBARO
ACT
APP1
APP2 AFT
ACM
AFTFI
AFTFP AFTFSO
AFTPAV
ACV AAT
ABS
BARO
B+BCM
BS
CMPCACCACOT
CPS
CTL
CAN-HCAN-L
CCOSS
CKP
CYLDLC
DEF
DEFLP
DEFDDEFLHR
DEFPLH
DEFRLHDEFRV
DEFSLH
DEFSM
DEFSMHDEFSP
DEFTH
DEFTL
DEFTTDOC
DOCIT
DPFDPFDPDPFIT
DPFOP
DPFOT
EGCECB1
ECB2
ECM
ECM PWR OUTECL
ECT1
ECT2
EFCEFS
EOL
EOPEOT
ETP
ETV
EBPVEGR
EGRGT
Actuator
Accelerator Pedal Position 1
Accelerator Pedal Position 2 Aftertreatment
Aftertreatment Control Module
AFT Fuel Injector
AFT Fuel Pressure AFT Fuel Shutoff
AFT Purge Air Valve
Air Control Valve Ambient Air Temperature
Antilock Brake System
Barometric Pressure
Battery Positive VoltageBody Control Module
Brake Switch
Camshaft PositionCharge Air Cooler CAC Outlet
Temperature
Clutch Pedal Switch
Control
Controller Area Network HighController Area Network Low
Crankcase Oil Separator Speed Sensor
Crankshaft Position
Cylinder Data Link Connector
Diesel Exhaust Fluid
DEF Line Pressure
DEF Doser DEF Line Heater Relay
DEF Pressure Line Heater
DEF Return Line Heater DEF Reverting Valve
DEF Supply Line Heater
DEF Supply Module
DEF Supply Module Heater DEF Supply Pump
DEF Tank Heater
DEF Tank Level
DEF Tank TemperatureDiesel Oxidation Catalyst
DOC Intake Temperature
Diesel Particulate Filter DPF Differential PressureDPF
Intake Temperature
DPF Outlet Pressure
DPF Outlet Temperature
Electronic Gauge Cluster Engine Compression Brake 1
Engine Compression Brake 2
Engine Control Module
ECM Power OutputEngine Coolant Level
Engine Coolant Temperature 1
Engine Coolant Temperature 2
Engine Fan ControlEngine Fan Speed
Engine Oil Level
Engine Oil PressureEngine Oil Temperature
Engine Throttle Position
Engine Throttle Valve
Exhaust Back Pressure ValveExhaust Gas Recirculation
EGR Cooler Gas TemperatureEGRV
EGRVP
FDPINJ
FPCV
FRPGNDHPFP
HEST
IAH
IAHFSIAHI
IAHR
IMP
IMTKAPWR
MIL
NOX
EGR Valve
EGR Valve Position
Fuel Delivery PressureFuel Injector
Fuel Pressure Control Valve
Fuel Rail PressureGroundHigh Pressure Fuel Pump
High Exhaust System Temperature
Intake Air Heater
Intake Air Heater Fuel SolenoidIntake Air Heater
Igniter
Intake Air Heater Relay
Intake Manifold Pressure
Intake Manifold TemperatureKeep Alive Power
Malfunction Indicator Lamp
Nitrogen Oxides
NH3
O2S
PDMPM
RAPP
SCR
SCRITSCROT
SIG GND
SARTSWBAT
TCM
TOSS
TCTC1TOP
TC2CIP
TC2CISTC2CITTC2WC
UVC
VREF
WTSLWIF
Ammonia
Oxygen Sensor
Power Distribution ModuleParticulate Matter
Remote Accelerator Pedal Position
Selective Catalyst Reduction
SCR Intake TemperatureSCR Outlet Temperature
Signal Ground
Stand Alone Real Time ClockSwitched Battery
Transmission Control Module
Transmission Output Shaft Speed
TurbochargerTC1 Turbine Outlet Pressure
TC2 Compressor Intake Pressure
TC2 Compressor Intake Sensor TC2 Compressor Intake
TemperatureTC2 Wastegate Control
Under Valve Cover
Voltage Reference
Wait To Start LampWater In Fuel
Ammonia (NH )Sensor Module
3
CAN Data
SCR Sensor Values
SCR Actuator ValuesSCR Trip/Event DataSCR Engine Mode REQSCR
System Fault Status
