Electrical Connectors and Functions

RENR8132 Jack/Plug Functional Description

TOP VIEW May 2004 J1/P1 Electronic Control Module (ECM) Connector (key C)
J2/P2 Electronic Control Module (ECM) Connector (key D)
J3/P3 Customer Connector (40-Pin)
J114/P114 Auxiliary Temperature Sensor Connector (3-Pin)
Inlet Air J109/P109 Auxiliary Pressure Sensor Connector (3-Pin)
Temperature
Inlet Air Sensor J20/P20 Primary Speed/Timing Sensor Connector (3-Pin)
Temperature P89 J21/P21 Coolant Temperature Sensor Connector (3-Pin)
Sensor (Specific Arrangements Only)
Fuel Pressure J22/P22 Oil Pressure Sensor Connector (3-Pin)
Sensor Connector P89
P49 (Specific Arrangements Only) Turbocharger Compressor Outlet Pressure Sensor Connector
Caterpillar Supplied J23/P23
Customer Engine Service (3-Pin)
Connector Tool Connector P26 Timing Calibration Connector (2-Pin)
J3 J60
J27/P27 Atmospheric Pressure Sensor Connector (3-Pin)
J34/P34 Coolant Level Sensor Connector (3-Pin)
J35/P35 Throttle Position Sensor Connector (3-Pin)
J42 Customer Installed Service Tool Connector
Injectors Timing Calibration J43/P43 Fuel Temperature Sensor Connector (3-Pin)
6&8 (TC) Probe
Connector J44/P44 Secondary Speed/Timing Sensor Connector (3-Pin)
P57
J26/P26 J45/P45 Injection Actuation Pressure Sensor Connector (3-Pin)
Injectors
5&7 Injection Actuation Pressure Control Valve Sensor Connector-
P53 J46/P46
(2-Pin)
J49/P49 Fuel Pressure Sensor Connector (3-Pin)
J51/P51 Engine Oil Temperature Sensor Connector (3-Pin)
Electronics
Ground J52/P52 #1, #3 Hydraulic Electronic Unit Injector Connector (4-Pin)
Injection Actuation ECM
Stud Connector J53/P53 #5, #7 Hydraulic Electronic Unit Injector Connector (4-Pin)
Timing Calibration Pressure Sensor ECM
(TC) Probe J2/P2
Electronic Connector J54/P54 #9, #11 Hydraulic Electronic Unit Injector Connector (4-Pin)
Connector J1/P1
J26/P26 Control J56/P56 #2, #4 Hydraulic Electronic Unit Injector Connector (4-Pin)
Module
3408E Industrial Engine J57/P57 #6, #8 Hydraulic Electronic Unit Injector Connector (4-Pin)
#12, #10 Hydraulic Electronic Unit Injector Connector
ECM Caterpillar Supplied J58/P58
Customer
Connector
J2/P2
Fuel Pressure
Sensor Connector
P49
Connector
J3
Engine Service
Tool Connector
J60
Electrical System J60
(4-Pin)
Service Tool Connector (9-Pin)
Injection Actuation
J89/P89 Inlet Air Temperature Sensor Connector (3-Pin)
Pressure Control Electronics
Valve Ground
Stud
7PR1-UP
ECM
Connector
J1/P1

Electronic
Control
Module Injectors
1&3
P52

Injectors
2&4
P56

Primary Engine
Speed/Timing
Sensor Connector
J20/P20

Atmospheric
Pressure
J2 J1
Sensor Injection Actuation
Pressure Control Valve
Engine Coolant Fuel
Temperature Intake Manifold Temperature Sensor
Engine Oil
Sensor (Boost)
Pressure Sensor Engine Oil
Atmospheric (Turbo Outlet)
Injection Actuation
Pressure Sensor Pressure Sensor Temperature Sensor
Pressure Sensor
Connector J45/P45 Connector J27/P27 Connector J23/P23 Atmospheric
Pressure Sensor
Electronic Control Module

© 2004 Caterpillar Printed in U.S.A.

All Rights Reserved

4-Pin DT Connector
Electronic Control Module (ECM) J60 102-8814 Seal
Caterpillar Supplied
Timing Calibration Engine Service
(TC) Probe Tool Connector

3E-3376 Receptacle As. 3E-3377 Wedge 3E-3374 Wedge 3E-3373 Plug As.
Electronics
Ground Stud 102-8804 Receptacle Kit 102-880 9 Plug Kit

Wire Gauge Pin # Socket #

P26/J26
14 9W-0852 9W-0844
8 HEUI Injectors
16 - 18 8T-8729 8T-8730

40-Pin Deutsch Connector

J3 Customer
Connector
P3
Battery
110-6844 Seal
9-Pin HD10 Receptacle
Disconnect
+ -
Battery
Switch 24VDC
Secondary 110-6845 Plug As.
E D

Primary Speed/Timing Sensor Breaker C

Speed/Timing Sensor
SMMS or A
B

F
J

P20/J20

RENR8132
G
110-6845 Plug As. H

Primary Engine or
Speed/Timing Sensor 110-6846 Plug As.
Keyswitch (Service Replacement)
8T-8736 Rece ptacle
P44/J44 15 Amp 110-6846 Plug As.
Secondary Engine Breaker 15 Amp
Speed/Timing Sensor Breaker Wire Gauge Pin # Socket #

16 Page, JVD
12 Hydraulic Wire Gauge Pin # Socket #
Fuel System Block Diagram Electronic Unit J46/P46
14 9W-0852 9W-0844
14 9W-0852 9W-0844
Injection Actuation
To Lubrication System
Injectors Pressure Control 16 - 18 8T-8729 8T-8730 16 - 1 8 8T-8729 8T-8730
Valve (IAPCV) P45/J45 OEM Installed Switches:
Injection Actuation PTO Enable
Pressure Sensor
Engine PTO Ramp Up/Down 3-Pin DT Connector
Oil Temperature P27/P27 PTO Interrupt 102-881 3 Seal
Sensor Remote Shutdown
Oil Pressure Atmospheric
Sensor Pressure Sensor Starting Aid Override
P22/J22
Overspeed Verify
Intake Manifold Engine Oil
Cold Start Pressure Sensor Intermediate Engine Speed
(Boost)
(Turbo Outlet) Oil High Pressure
Maintenance Due Reset
Reservoir J23/P23 Torque Limit 3E-3371 Wedge
Pressure Sensor Oil Manifold 3E-3368 Wedge
Intake Manifold J35/P35 3E-3307 Receptacle As. 104-2921 Plug As.
Cooldown Pressure Sensor Throttle
Injection Actuation
Fuel Temperature P21/J21 102-8803 Receptacle Kit 102-8808 Plug Kit
High Circuit Pressure Sensor Position Sensor
Pressure Sensor Engine Coolant
Temperature Sensor P34/J34
Oil Pump Coolant
High Pressure Level Sensor Wire Gauge Pin # Socket #
Oil Manifold P43/J43
Fuel P109/J109 14 9W-0852 9W-0844
Temperature Sensor Auxiliary
Oil 16 - 18 8T-8729 8T-8730
Filter P51/J51 Pressure Sensor
Injection Engine Oil P114/J114
Actuation ECM Temperature Sensor Auxiliary
Pressure Temperature Sensor
J89/P89 40-Pin DRC Connector
Control P49/J49
Valve Intake Manifold Air
Fuel

40
Temperature Sensor

40

10
Oil

10

20

30

40
Pressure Sensor

39
Cooler

38
Fuel 3E-8557 Bolt

37
Transfer

36
Warning Lamp

16

26

36
6
36
Pump Inlet Air Shutoff
Hydraulic Electronic
Unit Injectors (HEUI) Solenoid & Relay

DRC16 -40S
DE UTS CH I PD
Diagnostic Lamp

15

25

35
5
35

35

5
Pressure

34
Lubrication Primary Regulating NOTE: Maintenance Ether

33
Oil Pump Fuel Filter Valve Components within Due Lamp Solenoid & Relay 3E-4367 Ring

32

11

21

31
1
31

1
Water

31
this area are
Separator recommendations
Secondary Customer Installed J42 Engine Monitoring 8T-9834 Connector As.
9X-3132 Seals
Fuel Filter Service Tool System (EMS)
10 15

5 20

Engine Coolant Connector 0 25 Display Modules Wire Gauge Pin # Socket # 9X-1343 Receptacle As.
Temperature
Sensor 14 9W-0852 9W-0844
Oil Fuel 16 - 18 8T-8729 8T-8730
Sump Tank
 MAIN UNIT
(NOTE E)
OPTIONAL EMS DISPLAY MODULES

TACHOMETER QUAD GAGE

(NOTE E) (NOTE E)

15
10 20
OPTIONAL REMOTE
5 25 TACHOMETER OR
QUAD GAGE
0 RPM X100 30 (NOTES E & J)

14
15
25
34
35
20
23
13

33

10
11
12
16
17
18
19
21
22
24
26
27
28
29
30
31
32
36
37
38
39
40
1
2
5

7
4

3
6
8
9

1
2
3
4
5
6

1
2
3
4
5
6
7
8
1
2
3
4
5
6
(NOTE D)

+24V 1
- BAT. 2
US/METRIC 3
SCROLL FORWARD 4 (NOTE F)
CAT DATA LINK - 5
CAT DATA LINK + 6
UNUSED 7
WARNING LAMP 8
WARNING 9
BACKLIGHT LAMP PWR 10
SCROLL BACKWARD 11
12
(NOTE J)

INJECTORS INJECTORS INJECTORS INJECTORS

#1 #3 #5 #7 #6 #8 #2 #4

GY-16
WH-16

OR-16
PU-16

GY-16
WH-16

OR-16
PU-16
GY-16
WH-16

OR-16
PU-16

GY-16
WH-16

OR-16
PU-16
J2/P2
INJECTOR 1 16 A701/GY
INJECTOR 2 26 A702/PU

1
2
3
4

1
2
3
4
1
2
3
4

1
2
3
4
INJECTOR 3 32 A703/BR
INJECTOR 4 38 A704/GN P52 P53 P57 P56

A706/GY
F729/GN
A708/BR
F729/GN

A702/PU
F727/BU
A704/GN
F727/BU
A705/BU
F728/BR
A707/PU
F728/BR
INJECTOR 5 37 A705/BU A701/GY
INJECTOR 6 31 A706/GY A703/BR
INJECTOR 7 30 A707/PU F726/YL
INJECTOR 8 36 A708/BR A705/BU
A707/PU
F728/BR
F729/GN (NOTE J)
A708/BR
START C OFF
CIRCUITS WITHIN THIS AREA ARE RECOMMENDATIONS
INJECTOR COMMON 1&3 5 F726/YL A706/GY
RELAY ON B
INJECTOR COMMON 2&4 17 F727/BU F727/BU
INJECTOR COMMON 5&7 27 F728/BR A704/GN S ST
INJECTOR COMMON 6&8 39 F729/GN A702/PU AIR SHUTOFF
R SOLENOID
CB (P49)
KEYSWITCH 15A 997/OR A +5V
SIGNAL FUEL PRESSURE
F714/PK C SENSOR
IAPCV RETURN 35 E797/WH E797/WH
INJECTION ACTUATION 993/BR B RETURN
IAPCV 29 E798/PK E798/PK E798/PK 1
ENGINE COOLANT TEMPERATURE 9 995/BU 995/BU E797/WH 2 PRESSURE CONTROL VALVE (NOTE K)
15A
FUEL TEMPERATURE 15 A751/YL A751/YL P46 (P114)
ATMOSPHERIC PRESSURE 20 A747/GY A747/GY 412/BU 1 + A +8V
NOT USED AUXILIARY TEMPERATURE
INTAKE MANIFOLD PRESSURE 23 A746/PK A746/PK 998/BR 2 C SIGNAL
CB SENSOR (131-0427)
ENGINE OIL PRESSURE 8 994/GY 994/GY B RETURN
ALTERNATOR (NOTE B)
INLET AIR TEMPERATURE 14 F713/OR F714/PK J45 G S
FUEL PRESSURE 2 F714/PK F713/OR 997/OR A +5V CB
INJECTION ACTUATION PRESSURE GND (P34)
SOLENOID RETURN 7 E799/BR 998/BR 993/BR B RETURN (NOTE C) MTR BAT
SENSOR 15A A +8V
AIR SHUTOFF SOLENOID 13 F701/BR 997/OR E796/GN C SIGNAL COOLANT LEVEL
19 F700/BU 993/BR C SIGNAL
NOT USED SENSOR (111-3794)
THROTTLE POSITION SENSOR 24 F702/GN 412/BU J20 B RETURN
STARTING
AUXILIARY TEMPERATURE SENSOR 25 F703/GY E795/YL 996/GN A +12V MOTOR CB
PRIMARY SPEED/TIMING
MAINTENANCE CLEAR SWITCH 1 F704/OR E796/GN 998/BR B RETURN SENSOR (NOTE B)
SPARE 3 F737/YL 999/WH 999/WH C SIGNAL (P19B)
BATTERY A +5V
F732/PK
DISCONNECT C SIGNAL AUXILIARY PRESSURE
J44 SENSOR (161-9932)
996/GN SWITCH B RETURN
996/GN A +12V SECONDARY SPEED/TIMING
996/GN 996/GN (NOTE B)
993/BR 998/BR B GND SENSOR
(P35)
997/OR F732/PK C SIGNAL + -
998/BR 998/BR C SIG
998/BR THROTTLE POSITION
998/BR 998/BR A + BAT.
998/BR P21 SENSOR (161-8906)
998/BR B - BAT.
997/OR F714/PK 997/OR A +5V ENGINE COOLANT TEMPERATURE
J1/P1 993/BR F714/PK F714/PK 993/BR B GND SENSOR BATTERY
997/OR
DIGITAL SENSOR RETURN 29 998/BR F713/OR 995/BU C SIGNAL
997/OR
ANALOG SENSOR POWER (+5V) 36 997/OR F713/OR F713/OR
997/OR J3/P3
ANALOG SENSOR RETURN 30 993/BR E799/BR J23
997/OR 997/OR INTAKE MANIFOLD PRESSURE ETHER
NOT USED 26 412/BU F701/BR 997/OR A +5V 150(4)/OR-14 1 +BAT. (UNSWITCHED)
997/OR 997/OR (BOOST) VALVE
ENGINE OIL TEMPERATURE 31 E795/YL F700/BU 993/BR B GND 150(6)/OR-14 2 +BAT. (UNSWITCHED)
997/OR (TURBO OUTLET)
SPEED/TIMING SENSOR POWER 32 996/GN F702/GN A746/PK C SIGNAL F701/BR 4 AIR SHUTOFF SOLENOID
997/OR SENSOR
INJECTION ACTUATION PRESSURE 37 E796/GN F703/GY E799/BR 5 SOLENOID COMMON
997/OR
PRIMARY SPEED/TIMING 38 999/WH F704/OR J27 F703/GY 11 AUXILIARY TEMP SENSOR
997/OR
SECONDARY SPEED/TIMING 39 F732/PK F737/YL 997/OR A +5V ATMOSPHERIC PRESSURE F719/BR 36 COOLANT LEVEL SENSOR
993/BR B GND SENSOR A700/OR 8 DIGITAL SNSR PWR (+8V) STARTING AID SW
993/BR
REMOTE SHUTDOWN SWITCH (NO) 2 F715/PU A747/GY C SIGNAL 998/BR 9 DIGITAL SNSR RETURN
993/BR
INTERMEDIATE SPEED SWITCH 8 F716/WH F714/PK 20 FUEL PRESSURE SENSOR MAINTENANCE CLEAR SW
993/BR
J1939 SHIELD 15 A234/BK J22 F713/OR 19 INLET AIR TEMPERATURE SENSOR
993/BR 993/BR
J1939 DATA + 10 F711/GN 997/OR A +5V ENGINE OIL PRESSURE F725/WH 33 AUXILIARY PRESS. SENSOR TORQUE LIMIT SW
993/BR 993/BR
J1939 DATA - 16 F712/GY 993/BR B GND SENSOR F702/GN 10 THROTTLE POSITION SENSOR
993/BR (NOTE H)
OVERSPEED VERIFY SWITCH 13 F722/OR 994/GY C SIGNAL 997/OR 14 ANLG SNSR PWR (+5V) REMOTE SHUTDOWN SW
993/BR
KEYSWITCH 23 113/OR 993/BR 15 ANLG SNSR RETURN
993/BR
PTO ENABLE SWITCH 14 F717/YL P51 F709/BU 22 ETHER START VALVE RELAY INTERMEDIATE SPEED SW
993/BR
PTO RAMP UP SWITCH 20 F718/BU 997/OR A +5V ENGINE OIL TEMPERATURE F720/GN 38 STARTING AID SW
PTO RAMP DOWN SWITCH 19 F721/GY 993/BR B GND SENSOR F704/OR 12 MAINTENANCE CLEAR SW OVERSPEED VERIFY SW
AUXILIARY PRESSURE SENSOR 17 F725/WH E795/YL C SIGNAL F710/BR 21 TORQUE LIMIT SW
RENR8132

DIAGNOSTIC LAMP 22 F707/WH F715/PU 27 REMOTE SHUTDOWN SW PTO INTERUPT SW

WARNING LAMP 27 F706/PU P43 F716/WH 28 INTERMEDIATE SPEED SW
STARTING AID SWITCH 25 F720/GN 997/OR A +5V FUEL TEMPERATURE F722/OR 40 OVERSPEED VERIFY SW PTO ENABLE SW
ETHER START VALVE RELAY 34 F709/BU 993/BR B GND SENSOR F708/YL 23 PTO INTERRUPT SW
DIGITAL SENSOR POWER (+8V) 35 A700/OR A751/YL C SIGNAL F717/YL 29 PTO ENABLE SW
+BATTERY (UNSWITCHED)(NOTE B) 4 150/OR-14 150(4)/OR-14 F700/BU 3 NOT USED
16 Page, JVD

MAINTENANCE OVERDUE LAMP 21 F705/PK F718/BU 30 PTO RAMP UP SW PTO RAMP

COOLANT LEVEL SENSOR 24 F719/BR P89 F721/GY 39 PTO RAMP DOWN SW UP/DOWN SWITCH
PTO INTERUPT SWITCH 28 F708/YL 997/OR A +5V F705/PK 13 MAINTENANCE OVERDUE LAMP
993/BR B RETURN INLET AIR TEMPERATURE
TORQUE LIMIT SWITCH 40 F710/BR SENSOR F707/WH 24 DIAGNOSTIC LAMP
TIMING CALIBRATION (TC) PROBE + 18 F723/PK F713/OR C SIGNAL F706/PU 25 WARNING LAMP
TIMING CALIBRATION (TC) PROBE - 12 F724/PU NOTE K F737/YL 37 SPARE
+BATTERY (UNSWITCHED) 6 150/OR-14 150(6)/OR-14 113/OR 26 KEYSWITCH INPUT MAINTENANCE
ATA DATA LINK - 1 E793/BU 892/BR 6 CAT DATA LINK - OVERDUE LAMP
J49 MAX LENGTH 30 METERS
ATA DATA LINK + 7 E794/YL 893/GN 7 CAT DATA LINK +
CAT DATA LINK - 3 892/BR 997/OR A +5V E794/YL 31 ATA DATA LINK +
993/BR B RETURN FUEL PRESSURE MAX LENGTH 40 METERS DIAGNOSTIC LAMP
CAT DATA LINK + 9 893/GN SENSOR E793/BU 32 ATA DATA LINK -
-BATTERY 5 229/BK-14 F714/PK C SIGNAL A234/BK 16 BARE
-BATTERY 11 229/BK-14 F711/GN 17 YL CABLE AS
F712/GY 18 GN 165-0200 WARNING LAMP
ELECTRONIC CONTROL MODULE
F723/PK 1 F723/PK 34 REMOTE TC PROBE +
A A A + BAT.
F724/PU 2 F724/PU 35 REMOTE TC PROBE -
SERVICE TOOL CONNECTOR B B B - BAT.
P26 J26 C C C
J60 E CAT DATA LINK -
TIMING CALIBRATION
150/OR-14 A +BAT. CABLE AS A A D CAT DATA LINK +
TC PROBE CONNECTOR MAX LENGTH 40 METERS
229/BK-14 B -BAT. 165-0200 B B F J1939 DATA +
ELECTRONICS C C C G J1939 DATA -
GROUND 893/GN D CAT DATA LINK + CABLE J ATA DATA LINK +
STUD 892/BR E CAT DATA LINK - A A
120 ohms 153-2707 120 ohms H ATA DATA LINK -
(NOTE A) F B B
G C C (J42)
E793/BU H ATA DATA LINK - TERMINATION CUST. SUPPLIED ENG
CABLE TEE CABLE TEE
E794/YL J ATA DATA LINK + RESISTOR TERMINATION SERVICE TOOL CONN
133-0970 133-0970
174-3016 RESISTOR
174-3016

NOTE A: THE CUSTOMER CONNECTOR BRACKET GROUND STUD MUST NOTE E: ONE MAIN EMS MODULE IS REQUIRED FOR EACH DESIRED NOTE H: WHEN THE SHUTDOWN SWITCH IS CONNECTED TO BATTERY
HAVE A DIRECT WIRE CONNECTION TO BATTERY (-). THIS MONITORING STATION. THE TACHOMETER AND/OR QUAD (-) THE ECM DISABLES THE FUEL INJECTION SIGNAL.
CONNECTION CAN BE MADE AT THE STARTER (-) TERMINAL. GAGE UNITA ARE OPTIONAL AND WILL NOT OPERATE THIS ACTION CAUSES THE ENGINE TO SHUTDOWN WHILE
WITHOUT CONNECTION TO A MAIN EMS MODULE. LEAVING THE ECM POWERED TO MONITOR ENGINE NO ADDITIONAL CONNECTIONS ARE ALLOWED TO ANY
NOTE B: TO AVOID LOSS OF JOB DATA STORED BY THE ECM, DIAGNOSTICS. WIRES WITHOUT CATERPILLAR ENGINEERING APPROVAL
DISCONNECT SWITCHES SHOULD NOT INTERRUPT EITHER NOTE F: THE DEFAULT SETTING FOR THE EMS IS METRIC UNITS.
IF METRIC UNITS ARE REQUIRED NO CONNECTION IS UNLESS OTHERWISE SPECIFIED:
THE ECM BATTERY (-) OR UNSWITCHED BATTERY (+) LINES. NOTE J: REFER TO THE INSTALLATION GUIDE FOR ADDITIONAL ALL WIRES TO BE 18 AWG OR LARGER SAE J1128 TYPE = Circuit Connection
NEEDED. IF U.S. UNITS ARE REQUIRED, A PERMANENT INSTALLATION DETAILS.
NOTE C: PLACE APPROPRIATE CIRCUIT PROTECTION. CONNECTION TO BATTERY (-) IS REQUIRED. SEE SAE J1708
NOTE G: ALL WIRE IS 16 AWG WIRE UNLESS OTHERWISE SPECIFIED. NOTE K: THIS OPTIONAL FEATURE NOT AVAILABLE ON ALL SYSTEMS.
= Circuit Connection (Harness Splice)
NOTE D: PIN 22 ON THE EMS MAIN MODULE 40 PIN CONNECTOR ELIMINATION OF ANY COMPONENTS SHOWN WILL DISABLE
MUST BE CONNECTED TO BATTERY (-) FOR PROPER CERTAIN ENGINE FEATURES. CONTACT CATERPILLAR
OPERATION. ENGINEERING WHEN CONSIDERING COMPONENT REMOVAL THIS SCHEMATIC IS FOR THE 3408E INDUSTRIAL ENGINE (S/N: 7PR)
ABBREVIATION COMPONENTS ARE SHOWN WITH THE KEY OFF HARNESS CHG
131-6686 08 (ENGINE/CUSTOMER)
179-7087 00 (INJECTOR HARNESS)
IAPCV INJECTION ACTUATION PRESSURE CONTROL VALVE