XSMN TEMP
SENSOR
CONN (P95)
INJECTORS
9 & 11 (P54)
INJECTORS
5 & 7 (P53)
INJECTORS
1 & 3 (P52)
OIL TEMPERATURE
SENSOR
106-0735
COOLANT LEVEL SENSOR
OIL PRESSURE
SENSOR
103-6092
ATMOSPHERIC
PRESSURE SENSOR
TURBO OUTLET
PRESSURE SENSOR
CONN (J23)
BACKUP SPEED
TIMING SENSOR
FUEL TEMP SENSOR
PRIMARY SPEED
TIMING SENSOR
COOLANT TEMP
SENSOR
TURBO OUTLET
PRESSURE SENSOR
(BOOST)
INJECTION ACTUATION
PRESSURE SENSOR
CONN (P54)
INJECTORS
2 & 4 (P56)
INJECTORS
6 & 8 (P57)
INJECTORS
10 & 12 (P58)
INJECTION ACTUATION
PRESSURE CONTROL
VALVE
100-5632
XSMN PRESSURE
SENSOR
CONN (P96)
Engine Harness Connector And Component Locations
TOP VIEW
FUEL PRESSURE
SENSOR
RIGHT SIDE VIEW
CONTROL PANEL
CONN (P94 & J107)
LEFT SIDE VIEW
CONTROL PANEL
CONN (P94 & J107)
FUEL PRESSURE SENSOR
DATA BOOSTER
ECM CONN (P1)
TDC PROBE
CONN (P26)
ECM CONN (P2)
SERVICE TOOL
CONN (J60)
DATA BOOSTER (P108)
CUSTOMER CONNECTION (J3)
OIL TEMP SENSOR
(106-0735)
OIL PRESSURE SENSOR
(103-6092)
INJECTOR ACTUATION PRESSURE
CONTROL VALVE
(100-5632)
BACKUP SPEED
TIMING SENSOR
3-PIN DT PLUG FOR J1939 DATA LINK
134-2540 RECPTACLE AS.
133-0970 RECEPTACLE AS. (TEE)
133-0974 WEDGE 133-4076 PLUG AS.
102-8813 SEAL
J3 Customer Pin Out
No. Function Wire Ident
1 + Battery Unswitched 150/OR
2 Minus Battery Bus Bar 229/BK
3 Minus Battery Bus Bar 229/BK
4 Secondary Throttle Position M972/PK
5 + Battery Unswitched 150/OR
6 Cat Data Link - 945/BR
7 Cat Data Link + 944/OR
8 N/C -
9 N/C -
10 Primary Throttle Position M971/BR
11 N/C -
12 Hour Meter + F427/PK
13 Hour Meter - F428/WH
14 N/C -
15 N/C -
16 J1939 Shield A234/BK (Copper)
17 J1939 Data + K900/YL
18 J1939 Data - K990/GR
19 N/C -
20 Low Coolant Level Lamp E452/WH
21 High Coolant Temperature Lamp F401/GY
22 Maintenance Indicator Lamp F424/YL
23 Low Oil Pressure Lamp F400/GY
24 Diagnostic Lamp F429/BU
25 Warning Lamp F473/YL
26 N/C -
27 N/C -
28 N/C -
29 Remote Start 391/PK
30 + Battery Switched A31 8/BU
31 ATA Data Link + E794/YL
32 ATA Data Link - E793/BU
33 N/C -
34 Sync Switch Input 1 M973/BR
35 Sync Switch Input 2 M794/YL
36 Shutdown Imput G966/PU
37 Trolling Mode F425/PU
38 Slow Vessel Mode M970/WH
39 Maintenance Clear F426/BU
40 N/C
-
Wire Gauge
Pin #
Socket #
14
16-18
8T-8729
9W-0852
9W-0844
8T-8730
4-Pin DT Plug
3E-3376 Receptacle As.
3E-3377 Wedge
3E-3374 Wedge
102-8814 Seal
3E-3373 Plug As.
Wire Gauge
Pin #
Socket #
14
16-18
8T-8729
9W-0852
9W-0844
8T-8730
3E-4367 Ring
3E-8557 Bolt
8T-9834 Connector As.
9X-3132 Seals
9X-1343 Receptacle As.
40-Pin DRC Connector
DEUTSCH IPD
DRC16-40S
40 39 38 37 36
35 34 33 32 31
10
20
40
30
26
36
16
6
5
15
25
35
21
11
31
1
102-8804 Receptacle Kit
102-8809 Plug Kit
10
40
36
6
5
35
31
1
40-Pin Deutsch Connector
110-6844 Seal
or
Wire Gauge
Pin #
Socket #
14
16-18
8T-8729
9W-0852
9W-0844
8T-8730
Wire Gauge
Pin #
Socket #
14
16-18
8T-8729
9W-0852
9W-0844
8T-8730
9-Pin HD10 Receptacle
8T-8736 Receptacle
A
B
C
D
E
F
G
H
J
Wire Gauge
Pin #
Socket #
14
16-18
8T-8729
9W-0852
9W-0844
8T-8730
3-Pin DT Plug
3E-3307 Receptacle As.
3E-3371 Wedge
3E-3368 Wedge
102-8813 Seal
104-2921 Plug As.
102-8803 Receptacle Kit
102-8808 Plug Kit
110-6845 Plug As.
or
110-6846 Plug As.
(Service Replacement)
110-6845 Plug As.
110-6846 Plug As.
E68199
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows
through it.
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.
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.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
much current flows through it. This does not destroy the circuit breaker and it can be reset to
become part of the circuit again.
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.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
plugand receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch 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.
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Normally open switch that is closed due to an applied condition, and will open again with a
specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again
with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected
from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded
by being fastened to the machine.
Electrical Schematic Symbols And Definitions
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
©
1998 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR5030
September 1998
3412E Marine Engine
9KS1-UP
9PW1-UP
Wire Gauge
Pin #
Socket #
14
16-18
8T-8729
9W-0852
9W-0844
8T-8730
E68519
VOLTAGE SUPPLY WIRES.
INPUTS SIGNAL WIRES.
OUTPUTS SIGNAL WIRES.
COMMON WIRES.
DATA LINK PLUS.
DATA LINK MINUS.
1
P56
J56
P57
J57
P58
J58
P54
J54
P53
J53
M972/PK / SECONDARY THROTTLE POSITION
M971/BR / PRIMARY THROTTLE POSITION
103/YL / AUXILIARY CKT
C
B
A
G849/BR
993/BR
997/OR
P45/J45
(121-2725)
SIGNAL
SNSR RETURN
(106-0735)
J51/P51
E795/YL
993/BR
997/OR
A
B
C
CB
TIMING PROBE
CONNECTOR
NOTE G: DO NOT ENGINE MOUNT
POWER CABLE
(163-3974)
150/OR
150/OR
CB 15A
CB
(NOTE H)
CB
15A
CB
(NOTE H)
STARTING
MOTOR
G
DATA CABLE
(163-3973)
S
SIGNAL
SNSR RETURN
SIGNAL
SNSR RETURN
START
ON
OFF
START
OFF
ON
START
OFF
ON
START
(6T-7337)
HOUR METER
+
-
CB
(NOTE C)
ALT
ATA DATA LINK -
ATA DATA LINK +
CAT DATA LINK +
CAT DATA LINK -
UNUSED
UNUSED
UNUSED
J60
A
B
H
J
D
E
C
F
G
120/YL
229/BK
E793/BU
E794/YL
944/OR
945/BR
P92/J92
J93/P93
+
+
150/OR
-
+
HOUR METER
300mA RD (WARNING)
(6T-7337)
CB 15A
CB 15A
EMSS
ENGINE MOUNTED CONTROL PANEL
229/BK
300mA YL (DIAGNOSTIC)
300mA RD (MAINT IND)
MAINTENANCE CLEAR
SWITCH
391/PK
+
-
1
2
-
-
391/PK
SMMS
ES
J94B/P94B
SERVICE
TOOL
CONNECTOR
A
C
B
F427/PK
F428/WH
G966/PU
P107A/J107A
J94A/P94A
944/OR
945/BR
229/BK
A700/OR
4
3
2
1
CUSTOMER PROVIDED
SHUTDOWN SWITCH
(NOTE F)
391/PK
A318/BU
229/BK
229/BK
229/BK
F424/YL
F429/BU
24
1
F473/YL
F427/PK
F428/WH
229/BK
3
ON
OFF
CISS
-BATTERY
BUS BAR
+BATTERY
BUS BAR
24V
ONLY
F426/BU
G966/PU
P107B/J107B
150/OR
150/OR
SYNC SWITCH INPUT 1 / M973/BR
SYNC SWITCH INPUT 2 / M974/YL
TROLLING MODE / F425/PU
SLOW VESSEL MODE / M970/WH
MAINTENANCE CLEAR / F426/BU
AUXILIARY CKT / 106/WH
DRIVER #1 LOW OIL PRESSURE / F400/GY
DRIVER #2 HIGH COOLANT TEMP / F401/GY
DRIVER #3 LOW COOLANT LEVEL / E452/WH
DRIVER #4 MAINTENANCE IND / F424/YL
DRIVER #5 WARNING / F473/YL
DRIVER #6 DIAGNOSTIC LAMP / F429/BU
J1939 SHIELD / A234/BK
J1939 DATA - / K990/GN
J1939 DATA + / K900/YL
ATA DATA LINK - / E793/BU
ATA DATA LINK + / E794/YL
CAT DATA LINK + / 944/OR
CAT DATA LINK - / 945/BR
SHUTDOWN INPUT / G966/PU
DIG SNSR PWR / A700/OR
SNSR RETURN / 993/BR
ANLG SNSR PWR / 997/OR
120/YL
SYNC SWITCH INPUT 1
SYNC SWITCH INPUT 2
SECONDARY THROTTLE POSITION
PRIMARY THROTTLE POSITION
TROLLING MODE
SLOW VESSEL MODE
MAINTENANCE CLEAR
UNUSED
DRIVER #1 LOW OIL PRESSURE
DRIVER #2 HIGH COOLANT TEMP
DRIVER #3 LOW COOLANT LEVEL
DRIVER #4 MAINTENANCE IND
DRIVER #5 WARNING
DRIVER #6 DIAGNOSTIC LAMP
J1939 SHIELD
ATA DATA LINK -
ATA DATA LINK +
AUXILIARY CKT
UNUSED
CAT DATA LINK +
CAT DATA LINK -
SHUTDOWN INPUT
HOUR METER -
HOUR METER +
REMOTE START
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
F427/PK
F428/WH
G966/PU
P3/J3
(143-4518)
J108/P108
M973/BR
M974/YL
M971/BR
F425/PU
M970/WH
F426/BU
106/WH
103/YL
UNUSED
F400/GY
F401/GY
E452/WH
F424/YL
F473/YL
F429/BU
A234/BK
K990/GN
K900/YL
E793/BU
E794/YL
104/YL
UNUSED
944/OR
945/BR
150/OR
229/BK
G966/PU
F428/WH
F427/PK
150/OR
391/PK
A318/BU
229/BK
UNUSED
UNUSED
UNUSED
993/BR
UNUSED
997/OR
A
C
B
34
35
4
10
37
38
39
19
11
15
23
21
20
22
25
24
16
32
31
28
9
7
6
1
3
36
13
12
5
29
30
2
8
14
26
27
40
33
UNUSED
SYNC SWITCH INPUT 1 / M973/BR
SYNC SWITCH INPUT 2 / M974/YL
TROLLING MODE SW / F425/PU
SLOW VESSEL MODE SW / M970/WH
MAINTENANCE CLEAR SW / F426/BU
AUXILIARY CKT / 106/WH
DRIVER #1 LOW OIL PRESSURE / F400/GY
DRIVER #2 HIGH COOLANT TEMP / F401/GY
DRIVER #3 LOW COOLANT LEVEL / E452/WH
DRIVER #4 MAINTENANCE / F424/YL
DRIVER #5 WARNING LAMP / F473/YL
DRIVER #6 DIAGNOSTIC LAMP / F429/BU
ATA DATA LINK - / E793/BU
ATA DATA LINK + / E794/YL
CAT DATA LINK + / 944/OR
CAT DATA LINK - / 945/BR
SHUTDOWN INPUT / G966/PU
J1939 SHIELD (GND) / A234/BK
J1939 DATA - / K990/GN
J1939 DATA + / K900/YL
MARINE GEAR OIL TEMP SNSR / G732/WH
TDC PROBE + / F723/PK
TDC PROBE - / F724/PU
BKUP SP/TMG SNSR / F732/PK
SP/TMG SNSR PWR / M995/GY
PRIMARY SP/TMG SNSR / 999/WH
ENG OIL TEMP SNSR / E795/YL
COOLANT LEVEL SNSR / M967/OR
ANALOG SNSR PWR / 997/OR
SNSR RETURN / 993/BR
SP/TMG RETURN / 998/BR
DIG SNSR PWR / A700/OR
25
2
8
19
20
24
21
22
27
28
34
40
1
7
9
3
4
5
14
6
11
23
15
10
16
26
33
18
12
39
32
38
37
31
17
13
36
30
29
35
J26/P26
(129-6628)
SIGNAL
SP/TMG RETURN
SP/TMG SNSR PWR
SIGNAL
SP/TMG RETURN
SP/TMG SNSR PWR
F723/PK
F724/PU
P44/J44
P20/J20
1
2
F732/PK
998/BR
M995/GY
(129-6628)
A
B
C
C
B
A
999/WH
998/BR
M995/GY
2
1
E798/PK
E797/WH
P46
CYL CYL CYL CYL CYL CYL
CONTROL VALVE
(100-5632)
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
P52
J52
(HIGH COOLANT TEMPERATURE)
(LOW OIL PRESSURE)
OPTIONAL LAMPS (NOTE B)
(DIAGNOSTIC LAMP)
(MAINTENANCE LAMP)
(LOW COOLANT LEVEL)
(WARNING LAMP)
(NOTE E)
(NOTE E)
(NOTE E)
(NOTE E)
SECONDARY THROTTLE POSITION
PRIMARY THROTTLE POSITION
AUXILIARY CKT
HOUR METER -
HOUR METER +
AUXILIARY CKT
SYNC SWITCH
P35 (HD)
PRIMARY THROTTLE
POSITION SENSOR
(9X-9648) OR (121-7029)
(NOTES D & G)
SIG
C
B
A
P100
ENGINE VISION
INTERFACE MODULE
(OPTIONAL)
(130-6197)
ENGINE VISION DISPLAY UNIT (OPTIONAL)
(163-3970)
(NOTE G)
ATA DATA LINK +
ATA DATA LINK -
CAT DATA LINK +
CAT DATA LINK -
UNUSED
UNUSED
UNUSED
J42
A
B
J
H
D
E
C
F
G
ON/OFF
SWITCH
(7C-2668)
GPS
INTERFACE
MODULE
(OPTIONAL)
(130-6191)
P111
- CAT DATA LINK
+ CAT DATA LINK
M973/BR
M974/YL
M972/PK
M971/BR
F425/PU
M970/WH
F426/BU
/
/
/
/
/
/
/
- CAT DATA LINK
+ CAT DATA LINK
GPS
(CUSTOMER)
(SUPPLIED)
SYNC SWITCH INPUT 1
SYNC SWITCH INPUT 2
SECONDARY THROTTLE POSITION
PRIMARY THROTTLE POSITION
TROLLING MODE
SLOW VESSEL MODE
MAINTENANCE CLEAR
SLOW VESSEL MODE SWITCH
MAINTENANCE CLEAR SWITCH
TROLLING MODE SWITCH
(NOTE E)
(NOTES G & J)
CUSTOMER
CONNECTOR
/ M972/PK
/ M971/BR
/ 103/YL
/ F428/WH
/ F427/PK
/ 104/YL
A318/BU
F428/WH / HOUR METER -
F427/PK / HOUR METER +
104/YL / AUXILIARY CKT
SIGNAL
SNSR RETURN
(103-6091)
A
B
C
A746/PK
993/BR
997/OR
P23/J23
OPTIONAL
(3E-6114)
OPTIONAL
(100-3055)
CUSTOMER WIRING AND OPTIONAL FEATURE WIRING SHOWN
ARE RECOMMENDED
A
B
C
C
B
A
413/BR
993/BR
997/OR
C
B
A
(103-6092)
WIRE CODE
STD ENGINE HARNESS WIRING
OPTIONAL ATTACHMENT WIRING
CUSTOMER SUPPLIED WIRING
ALT ALTERNATOR
ATA AMERICAN TRUCKING ASSOCIATION
CB CIRCUIT BREAKER
CISS CUSTOMER INSTALLED START SWITCH
DIG DIGITAL
ECM ELECTRONIC CONTROL MODULE
EMSS ENGINE MOUNTED START SWITCH
ES ENGINE SHUTDOWN
GPS GLOBAL POSITIONING SYSTEM
SMMS STARTING MOTOR MAG SWITCH
VM VOLT METER
ECM
KEY D
(156-7172)
P2/J2
C
B
A
CYL CYL
ABBREVIATION
CYL
CYL
NOTE F: AN ENGINE SHUTDOWN SWITCH SHOULD BE INSTALLED
AT EACH STATION TO SHUTDOWN THE ENGINE
WITHOUT REMOVING POWER TO ECM
G732/WH
993/BR
A700/OR
INDIRECT PATH
(102-2240)
F421/YL
993/BR
997/OR
NOTE C: CHOOSE PROPERLY SIZED CIRCUIT BREAKER FOR ALTERNATOR
CUSTOMER'S OPTION
40
34
11
28
22
21
18
12
33
31
37
27
38
32
17
26
16
5
2
4
6
10
13
30
36
39
25
24
1
7
19
29
35
23
20
8
9
15
3
14
INJECTOR 2 / A702/PU
INJECTOR 4 / J763/GY
INJECTOR COMMON 2 & 4 / L985/YL
INJECTOR 6 / A706/GY
INJECTOR 8 / A708/BR
INJECTOR COMMON 6 & 8 / L984/OR
INJECTOR 10 / A710/GY
INJECTOR 12 / A712/BR
INJECTOR COMMON 10 & 12 / L983/WH
INJECTOR 11 / A711/PU
INJECTOR 9 / A709/OR
INJECTOR COMMON 9 & 11 / F730/GY
INJECTOR 7 / A707/PU
INJECTOR 5 / A705/BU
INJECTOR COMMON 5 & 7 / F728/BR
INJECTOR 3 / A703/BR
INJECTOR 1 / A701/GY
INJECTOR COMMON 1 & 3 / F726/YL
SECONDARY THROTTLE POSITION / M972/PK
PRIMARY THROTTLE POSITION / M971/BR
AUXILIARY CKT / 103/YL
HOUR METER - / F428/WH
HOUR METER + / F427/PK
COOLANT TEMP SNSR / 995/BU
FUEL TEMP SNSR / F421/YL
AUXILIARY CKT / 104/YL
J96/P96
J95/P95
J43/P43
M967/OR
993/BR
C985/BU
J21/P21
J34/P34
P49/J49
P22/J22
C
B
P27/J27
A
(111-3794)
SIGNAL
SNSR RETURN
SIGNAL
SNSR RETURN
NO ADDITIONAL CONNECTIONS ARE ALLOWED TO ANY WIRES
WITHOUT CATERPILLAR ENGINEERING APPROVAL
UNLESS OTHERWISE SPECIFIED: ALL WIRES TO BE 16 AWG
OR LARGER, SAE J1128 TYPE SXL OR EQUIVALENT
SIGNAL
SNSR RETURN
SIGNAL
SNSR RETURN
ALARM
SNSR RETURN
(103-6092)
A
B
C
994/GY
993/BR
997/OR
A747/GY
993/BR
997/OR
C
B
A
(103-6093)
G428/BU
993/BR
997/OR
SIGNAL
SNSR RETURN
SIGNAL
SNSR RETURN
995/BU
993/BR
997/OR
(102-2240)
A
B
C
COMPONENTS ARE SHOWN WITH THE KEY OFF
ELIMINATION OF ANY COMPONENTS SHOWN WILL DISABLE CERTAIN ENGINE
COMPONENT REMOVAL
CYL
CYL
ECM GROUND STRAP
(SEE NOTE A)
P1/J1
(NOTE E)
(NOTE E)
!
!
-
+
E64459
REFER TO 3412E MARINE ENGINE INSTALLATION GUIDE SENR5014
ECM
MINUS BATTERY BUS BAR
KEY C
ANALOG SNSR PWR
ANALOG SNSR PWR
ANALOG SNSR PWR
ANALOG SNSR PWR
ANALOG SNSR PWR
ANALOG SNSR PWR
DIGITAL SNSR PWR
ANALOG SNSR PWR
ANALOG SNSR PWR
ANALOG SNSR PWR
DIGITAL SNSR PWR
9
1
2
6
5
4
8
7
3
11
10
12
9
1
2
6
5
4
8
7
3
11
10
12
30A
RECEIVER
M972/PK
C
C
TERMINATION
RESISTOR
(134-2540)
(NOTE K & M)
120
(153-2707)
(NOTES L & M)
120
DEVICE
TERMINATION
RESISTOR
(134-2540)
(NOTE K & M)
MAX LENGTH 1 METER
(NOTE M)
CC CC
C
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
C
MTR BAT
+BAT
-BAT
BAT
+BAT (UNSWITCHED) / 150/OR
-BAT / 229/BK
+BAT (UNSWITCHED) / 150/OR
-BAT / 229/BK
+BAT (SWITCHED) / 120/YL
+BAT (UNSWITCHED)
-BAT (NOTE A)
+BAT (UNSWITCHED)
+BAT (SWITCHED)
-BAT (NOTE A)
+BAT (UNSWITCHED) / 150/OR
-BAT / 229/BK
+BAT (UNSWITCHED) / 150/OR
-BAT / 229/BK
+BAT (SWITCHED) / 120/YL
INJR ACTN PRESS SNSR / G849/BR
FUEL PRESS SNSR / 413/BR
NO.2 NO.4 NO.6 NO.8 NO.10 NO.12
-BAT
+BAT
+BAT
-BAT
DIODE AS
- B
AT
+ BAT
- BAT
+ BAT
NOTE H: REQUIRED CIRCUIT PROTECTION. CIRCUIT PROTECTION
WILL VARY BASED ON THE NUMBER AND TYPE OF DISPLAYS.
NO.9 NO.11
NO.5
NO.7
NOTE A: -BAT ON CUSTOMER CONNECTOR MUST BE CONNECTED DIRECTLY TO
THE -BAT BUS BAR AND NOT CONNECTED TO -BAT THROUGH ANY OTHER
NOTE D: CATERPILLAR SUPPLIED, SHIPPED LOOSE WITH ENGINE. USE IS
INJR ACTN PRESS CONT VALVE / E798/PK
INJR ACTN PRESS CONT VALVE RETURN / E797/WH
TURBO OUTLET PRESS SNSR / A746/PK
ATMOSPHERIC PRESS SNSR / A747/GY
ENG OIL PRESS SNSR / 994/GY
MARINE GEAR OIL PRESS SNSR / G428/BU
NOTE B: 0.3A CURRENT LIMIT ON EACH OPTIONAL OUTPUT DRIVER
ATMOSPHERIC PRESS
NOTE E: INTERFACE TO ADDITIONAL ENGINES. FOR DETAILED INSTALLATION
FEATURES. CONTACT CATERPILLAR ENGINEERING WHEN CONSIDERING
NO.3
NO.1
THIS SCHEMATIC (154-0915) IS FOR THE 3412E MARINE ENGINE.
CUST SUPPLIED ENG.
SERVICE TOOL CONN
TURBO OUTLET PRESS SNSR
ENGINE OIL PRESS SNSR
COOLANT TEMP SNSR
FUEL TEMP SNSR
MARINE GEAR OIL PRESS SNSR
PRIM SP/TMG SNSR
MARINE GEAR OIL TEMP SNSR
BKUP SP/TMG SNSR
INJR ACTN PRESS SNSR
ENG OIL TEMP SNSR
FUEL PRESSURE SNSR
COOLANT LEVEL SNSR
INJR ACTN PRESS
(NOTE G)
NOTE L:
NOTE M:
NOTE K:
NOTE J: ENGINE VISION DISPLAY REQUIRES ENGINE VISION
INTERFACE MODULE
SEE INSTALLATION GUIDE SENR5014
MAXIMUM LENGTH OF DATA BUS (TERMINATION RESISTOR
TO TERMINATION RESISTOR) IS 40 METERS
SPECIFICATION FOR ALL J1939 DATA LINK CONNECTIONS
USE RECOMMENDED CABLE OR EQUIVALENT PER SAE J1939
REFER TO THE INSTALLATION GUIDE FOR ADDITIONAL
INSTALLATION DETAILS
18
17
J1939 DATA -
J1939 DATA +
A318/BU
150/OR
150/OR
120/YL
150/OR
229/BK
F429/BU
F473/YL
F424/YL
150/OR
F426/BU
391/PK
A318/BU
150/OR
150/OR
120/YL
150/OR
229/BK
F429/BU
F473/YL
F424/YL
150/OR
F426/BU
391/PK
A318/BU
150/OR
150/OR
120/YL
150/OR
229/BK
F429/BU
F473/YL
F424/YL
150/OR
F426/BU
391/PK
432 1 432 1 432 1 432 1 432 1 432
13
13
12 11 10
12 11 10
9 8 7
9 8 7
6 5 4 3 2 1
6 5 4 3 2 1
F
E
D
H
G
I
F
E
D
C
B
A
C
B
A
H
G
I
