RENR4922
December 2000
3500B Industrial Engines
Electrical System
3508B:
BPX1-UP
3512B:
BRC1-UP
3516B:
CAN1-UP
©
2000 Caterpillar
All Rights Reserved
Printed in U.S.A.
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
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
plug and receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
LEFT SIDE VIEW
Filtered Fuel Filter Pressure Sensor
Left Air Shut-Off Solenoid
Left Turbo Inlet Pressure Sensor
(Mounts In Air Cleaner - Not Shown)
LH Turbo Exhaust Temperature Sensor
Secondary Engine Speed/Timing Sensor
Engine Speed/Timing Sensor
After Cooler Temperature Sensor
Unfiltered Fuel Filter Pressure Sensor
Engine Service Connection H
(For Service Tool)
Engine Connection A
(Machine Interface)
Unfiltered Engine Oil Pressure Sensor
RIGHT SIDE VIEW
Right Air Shut-Off Solenoid
Right Turbo Inlet Pressure Sensor
(Mounts In Air Cleaner - Not Shown)
RH Turbo Exhaust Temperature Sensor
Timing Calibration Sensor
Crankcase Pressure Sensor
REAR VIEW
FRONT VIEW
Engine Control
(ADEM Controller)
Atmospheric Pressure Sensor
Engine Coolant Temperature Sensor
Turbo Outlet Pressure Sensor
Optional Oil Temperature Sensor
ALL DASHED LINES ARE ATTACHMENTS.
VOLTAGE SUPPLY WIRES.
DATA LINK PLUS.
INPUT SIGNAL WIRES.
COMMON WIRES.
OUTPUT SIGNAL WIRES.
DATA LINK MINUS.
BK-18
WH-18
TIMING
CALI-
BRATION
189-5476
L5
F722-OR
F707-WH
F720-GN
8 7
1
32
6T-3642
10A
15A
30A
6N-9349
30A
40A
8D-7265
15A
6T-3643
200-BK
F421-YL
129-9191
SENSOR
FUEL TEMP
(A)
9X-1343
40 PIN
ENGINE CONNECTION A
(OPTIONAL)
1 SIGNAL
2 RESISTOR
2
USE ONLY WITH PRELUBE
USE ONLY WITH PRELUBE
USE ONLY WITH PRELUBE
USE ONLY WITH PRELUBE
6T-3643
USE ONLY WITHOUT PRELUBE
USE ONLY WITHOUT PRELUBE
USE ONLY WITHOUT PRELUBE
USE ONLY WITH PRELUBE
USE ONLY WITH PRELUBE
53
PRCL
2
6
PRCL
4
6
PRCL
(PRCL)
RELAY 1
PRELUBE CONTROL
6N-9349
1
TO BATT(-)
229-BK
145-0343 RELAY
145-0346 BASE
137-4269 CLIP
150-1240
PRELUBE PRESS
SWITCH
ENGINE COOLANT
LEVEL SENSOR
165-6634
L14 J1939 DATA LINK
229-BK
20
19
200-BK
18
17
16
15
F712-GY
12
13
A249-BK
997-OR
F701-BR
G971-BR-14
F705-PK
F708-YL
229-BK-14
F702-GN
A700-OR
150-OR-14
150-OR-14
F711-GN
229-BK-14
229-BK-14
893-GN
892-BR
F717-YL
F709-BU
F716-WH
06
07
03
01
02
34
35
05
08
10
14
16
17
09
32
31
27
18
21
40
24
23
26
36
37
F706-PU
F718-BU
F719-BR
F721-GY
F722-OR
G971-BR-14
F715-PU
28
33
25
30
39
29
04
22
38
998-BR
G971-BR
11
15
20
19
113-OR-14
B429-YL
F720-GN
F707-WH
F710-BR
229-BK-14
993-BR
200-BK
D839-YL
AIR SHUT-OFF
SOLENOID
(LEFT)
118-6676
G971-BR-14
229-BK-14
229-BK-14
G971-BR-14
AIR SHUT-OFF
SOLENOID
(RIGHT)
118-6676
893-GN
D829-YL
6
7
8
9
150-OR
1
10
11
1
3
2
4
5
229-BK
892-BR
150-OR
L11
12
13
14
X1
X2
229-BK-6
229-BK-14
229-BK-10
L14
150-OR-8
229-BK-10
229-BK-6
229-BK-14
150-OR-14
150-OR
150-OR-14
229-BK
229-BK-6
NOTE B
229-BK
229-BK
229-BK
229-BK
150-OR-8
150-OR-10
SPEED ADJUST
POT (1K OHM)
10 TURN
122-9458
SA
3
2
1
150-OR-14
2 3
1
PTO ENABLE
4D-1836
150-OR-6
SC
F702-GN
ENGINE SPEED
CONTROL
150-OR
998-BR
-B S D +B
1 2 3
SPEED CONTROL
9X-9591
150-OR-10
R
DIGITAL SENSOR POWER (+8V)
A
B
993-BR
A700-OR
ANALOG SENSOR RETURN
ANALOG SENSOR POWER (+5V)
997-OR
A249-BK
CAN DATALINK J1939 (SHIELD)
CAN DATALINK J1939 (+)
F712-GY
F711-GN
NOTE A: TOTAL CURRENT LOAD FOR RELAY AND/OR
LAMP NOT TO EXCEED 300mA
2
CAN DATALINK J1939 (-)
R
A
150-OR
2
4D-1836
STARTER SOLENOID (+)
150-OR-8
ETHER SOLENOID (+)
BATTERY (+)
BATTERY (-)
229-BK-14
STARTER SOLENOID (+)
ETHER SOLENOID (-)
STARTER SOLENOID (-)
+8V DIGITAL
DIG RETURN
SIGNAL
PRELUBE PUMP MOTOR (+)
PRELUBE PUMP MOTOR (-)
C
ETHER RELAY
9Y2921
8586
87a
30
SAS
2 3
1
STARTING AID SWITCH
8N-0694 MOMENTARY
A700-OR
SMMS2
2 1
3
4
229-BK-14
MAG RELAY
9X-8124
87
SAR
2 3
1
PTO INTERUPT
4D-1836
2
3
PTO OPERATION
9G-0011
X1
X2
X1
X2
DIAGNOSTIC LAMP
7N-5876 LAMP
9D-3127 BASE
9D-2867 LENSE
NOTE A
998-BR
GENERAL ALARM LAMP
7N-5876 LAMP
9D-3127 BASE
9D-2868 LENSE
NOTE A
GENERAL
ALARM RELAY
9Y2921
85
86
87a
30
2
1
MAINTENANCE LAMP
7N-5876 LAMP
9D-3127 BASE
9D-1868 LENSE
NOTE A
GENERAL ALARM RELAY - COMMON
GENERAL ALARM RELAY-NORMALLY CLOSED
ENGINE OIL TEMP (SIGNAL)
2
GENERAL ALARM RELAY-NORMALLY OPEN
MAINT. LAMP
MAINT. CLR SW.
87
3
D839-YL
CAT DATA LINK (-)
200-BK
GAR
CAT DATA LINK (+)
ENGINE OIL TEMP (RETURN)
150-OR-10
150-OR-10
INSTRUMENT
PANEL CONNECTION
8N-1525
TO PANEL GP INSTRUMENT
186-4256
7N-8001
MAINT. CLEAR SW.
998-BR
F707-WH
F707-WH
L13
F702-GN
OPEN (DO NOT USE)
PRIMARY CAT DATALINK (+)
PRIMARY CAT DATALINK (-)
L13
START ENABLE RELAY
BATT (+) UNSWITCHED
L13
BATT (-) UNSWITCHED
AIR SHUTOFF COMMON (LEFT)
L8
DIGITAL SENSOR POWER
L13
PRIMARY THROTTLE
ANALOG SENSOR PWR (+5V)
J1939 DATALINK SHIELD
ENGINE HARNESS WIRING
(C)
J1939 DATALINK (+)
DIGITAL SENSOR RETURN
L11
1
L11
PTO INTERUPT
AIR SHUTOFF
MAG RELAY
9X-8124
4
L13
1
893-GN
3
START/STOP/RUN
4D-1836
12
TORQUE LIMITER SW.
DIAGNOSTIC LAMP
2 1
3
4
INTERMEDIATE SPEED SW
4D1836
MAG RELAY
9X-8124
32
+5V ANALOG
SIGNAL
ANALOG RET
DIGITAL RET
SIGNAL
+V SPD/TIM
+5V ANALOG
SIGNAL
ANALOG RET
ANALOG RET
SIGNAL
+5V ANALOG
+5V ANALOG
SIGNAL
ANALOG RET
TURBO
OUTLET
PRESSURE
SENSOR
161-9929
LEFT
TURBO
INLET
PRESSURE
SENSOR
161-9926
RIGHT
TURBO
INLET
PRESSURE
SENSOR
161-9926
ENGINE
OIL
PRESSURE
SENSOR
UNFILTD
161-9931
ENGINE
COOLANT
TEMP
SENSOR
102-2240
ENGINE
SPEED/
TIMING
SENSOR
129-6628
ANALOG RET
SIGNAL
+5V ANALOG
+5V ANALOG
SIGNAL
ANALOG RET
ATMOS
PRESSURE
SENSOR
161-9926
L2
L6
FUEL
FILTER
PRESSURE
SENSOR
FILTD
161-9931
ANALOG RET
SIGNAL
+5V ANALOG
B429-YL
COOLANT LEVEL SENSOR
L7
L7
ANALOG RET
SIGNAL
+5V ANALOG
L3
+8V DIGITAL
SIGNAL
DIGITAL RET
TURBO
EXHAUST
TEMP RH
163-7882
TURBO
EXHAUST
TEMP LH
163-7882
DIGITAL RET
SIGNAL
+8V DIGTAL
+5V ANALOG
SIGNAL
ANALOG RET
AFTER
COOLER
TEMP
SENSOR
102-2240
L4
25
FUEL
FILTER
PRESSURE
SENSOR
UNFILTD
161-9931
CRANK
CASE
PRESSURE
SENSOR
161-9926
DIGITAL RET
SIGNAL
+5V ANALOG
+5V ANALOG
SIGNAL
ANALOG RET
ENGINE
OIL
PRESSURE
SENSOR
FILTD
161-9931
INTERMEDIATE SPEED
4
3
1
F709-BU
2
SMMS1
L9
EPOS
PRELUBE RELAY
9X-8124
L11
L2
L3
C-KEY
PLUG AS.
101-0204
HSDL SHIELD GROUND
L6
A249-BK
L4
15
L9
L10
TORQUE LIMIT
L8
L6
39
C
L7
L3
B
L12
L2
L4
A
START/STOP/RUN
+V SPD/TIM
SIGNAL
DIGITAL RET
SECONDARY
ENGINE
SPEED/
TIMING
SENSOR
129-6628
AIR SHUTOFF RELAY
(H)
ENGINE SERVICE
CONNECTION 'H'
8T-8736
14-18 GA.
STR RELAY
MASTER 9Y-2921
200BK
D839YL
F719-BR
J1939 DATALINK (-)
EMERGENCY STOP
EMERGENCY STOP
(OPTIONAL)
OIL
TEMP
SENSOR
129-9191
1 SIGNAL
2 RETURN
AIR SHUTOFF + (LEFT)
200-BK
D839-YL
F731-OR
F730-GY
F729-GN
F728-BR
F727-GN
F726-YL
A712-BR
A711-PU
A710-GY
A709-OR
A708-BR
A707-PU
A706-GY
A705-YL
A704-GN
A703-BR
A702-PU
A701-GY
SOL 14&16 RETURN
SOL 13&15 RETURN
SOL 10&12 RETURN
SOL 9&11 RETURN
SOL 6&8 RETURN
SOL 5&7 RETURN
SOL 2&4 RETURN
SOL 1&3 RETURN
SOLENOID 16 POWER
SOLENOID 15 POWER
SOLENOID 14 POWER
SOLENOID 13 POWER
SOLENOID 12 POWER
SOLENOID 11 POWER
SOLENOID 10 POWER
SOLENOID 9 POWER
SOLENOID 8 POWER
SOLENOID 7 POWER
SOLENOID 6 POWER
SOLENOID 5 POWER
SOLENOID 4 POWER
SOLENOID 3 POWER
SOLENOID 2 POWER
SOLENOID 1 POWER
L1
YL
YL
G770-WH
G769-PU
A716-PU
A715-GY
A714-PK
32
D-KEY
PLUG AS.
101-0205
16
40
26
34
28
38
22
37
18
31
12
30
06
10
05
11
17
21
33
OPEN
INTERMEDIATE SPEED SW.
PTO ENABLE SW.
39
DIGITAL
RETURN
PTO RAMP UP SW.
PTO RAMP DN SW.
04
27
36
2
1
2
1
1
2
2
1
1
UNLESS OTHERWISE SPECIFIED ALL
WIRES ARE TO BE 16 AWG.
2
RECOMMENDED LOGIC DIAGRAM ONLY.
CUSTOMER CONNECTION LOGIC
DRAWING DOES NOT INCLUDE TOTAL POWER
DISTRIBUTION OR CIRCUIT PROTECTION
DEVICES. WIRE TO NEC STANDARDS.
2
1
1
229-BK-10
2
30 87
2
87a
WARNING LAMP/GEN ALARM
86 85
AIR SHUTOFF + (RIGHT)
START/STOP/RUN
ENGINE OIL TEMP SNSR SIG
ENGINE OIL TEMP SNSR RET
ANALOG SENSOR RETURN
2
1
1
2
AIR SHUTOFF COMMON (RIGHT)
START AID SWITCH
ETHER RELAY ON
BATT + (SWITCHED)
(ECM POWER ON/OFF)
4D-1836
892-BR
1
3
COOLANT LEVEL SENSOR
WH-18
BK-18
OR-18
2
OR-18
CUSTOMER CONNECTOR
40 PIN
8T9834
ECM
A
B
C
F732-PK
A
B
C
A746-PK
F713-OR
F714-PK
997-OR
993-BR
997-OR
993-BR
997-OR
993-BR
993-BR
997-OR
997-OR
993-BR
995-BU
996-GN
998-BR
999-WH
996-GN
999-WH
A
B
C
A
B
C
A
B
C
A
B
OR-18
YL-18
GN-18
WH-18
BK-18
OR-18
OR-18
BK-18
WH-18
OR-18
YL-18
GN-18
C
GN-18
2
1
YL
YL
A713-GN
A716-PU
G770-WH
CYLINDER
HEAD
SOL 16
CYLINDER
HEAD
SOL 14
G770-WH
A714-PK
YL
YL
YL
YL
CYLINDER
HEAD
SOL 15
YL-18
OR-18
CYLINDER
HEAD
SOL 13
YL
YL
YL
YL
YL
YL
YL
A713-GN
G769-PU
A715-GY
YL
A716-PU
G770-WH
A702-PU
F727-GN
A747-GY
OR-18
YL-18
GN-18C
B
A
993-BR
997-OR
A747-GY
F725-WH
GN-18
YL-18
OR-18
C
B
A
993-BR
997-OR
F725-WH
G971-BR
F701-BR
XXXX-XX
A746-PK
A747-GY
F713-OR
994-GY
F714-PK
CUSTOMER CONNECTION LOGIC
F702-GN
A704-GN
1
PRIMARY THROTTLE
AFTERCOOLER TEMPERATURE SNSR
A751-YL
OIL PRESSURE SNSR - FILTERED
TURBO INLET LH PRESSURE SNSR
ATMOSPHERIC PRESSURE SNSR
TURBO OUTLET PRESSURE SNSR
OPEN
13
03
02
08
14
20
23
07
19
TURBO INLET RH PRESSURE SNSR
AIR SHUTOFF RELAY
START ENABLE RELAY
A700-OR
998-BR
F723-PK
F724-PU
A751-YL
993-BR
997-OR
F704-OR
A700-OR
998-BR
BK-18
WH-18
998-BR
A700-OR
F703-GY
F737-YL
E795-YL
A746-PK
F713-OR
F714-PK
995-BU
997-OR
993-BR
F737-YL
997-OR
993-BR
A
B
C
OR-18
YL-18
GN-18
A751-YL
109-6507 SWITCH
111-1324 BLOCK
124-3176 COVER
F724-PU
F723-PK
BATTERY + (SWITCHED)
995-BU
COOLANT TEMPERATURE SNSR
A706-GY
09
24
01
29
35
F729-GN
A708-BR
A710-GY
F731-OR
15
A712-BR
A711-PU
F730-GY
A709-OR
A707-PU
F728-BR
A705-YL
YL
YL
YL
YL
A701-GY
F726-YL
F726-YL
A703-BR
ECM
C
B
A
993-BR
997-OR
E795-YL
997-OR
993-BR
A
B
C
OR-18
YL-18
GN-18
A705-YL
F728-BR
XXXX-XX
F737-YL
FUEL PRESSURE SNSR - UNFILTERED
F728-BR
A707-PU
G769-PU
A715-GY
A713-GN
G769-PU
A709-OR
F730-GY
F730-GY
A711-PUA712-BR
F731-OR
F731-OR
A710-GY
CYLINDER
HEAD
SOL 11
CYLINDER
HEAD
SOL 9
CYLINDER
HEAD
SOL 7
L13 OIL TEMP SENSOR
L13
BATT (+) UNSWITCHED
CYLINDER
HEAD
SOL 5
CYLINDER
HEAD
SOL 3
L1
CYLINDER
HEAD
SOL 1
CYLINDER
HEAD
SOL 12
CYLINDER
HEAD
SOL 10
CYLINDER
HEAD
SOL 8
CYLINDER
HEAD
SOL 6
CYLINDER
HEAD
SOL 4
YL
YL
YL
YL
YL
YL
CYLINDER
HEAD
SOL 2
YL
YL
A714-PK
A703-BR
YL
YL
INJECTOR GP (16)
A708-BR
F729-GN
F729-GN
A706-GY
F726-YL
A704-GN
1
B429-YL
2
2
1
F727-GN
A701-GY
F727-GN
A702-PU
1
2
2
1
1
1
2
2
YL
YL
RECEPT AS. (16)
9X-0352
F720-GN
OPEN
G971-BR
L1
F732-PK
BATT (-) UNSWITCHED
L12 BATTERY +/- (UNSWITCHED)
996-GN
TURBO EXHAUST TEMP LH
E795-YL
996-GN
999-WH
892-BR
F706-PU
F718-BU
L11 CAT DATALINK (LOCAL AND GLOBAL)
F721-GY
F723-PK
F724-PU
229-BK-14
229-BK-14
113-OR
CRANKCASE PRESSURE SENSOR
+V SPEED/TIMING
PRIMARY SPEED TIMING
GLOBAL CAT DATA LINK (-)
LOCAL CAT DATA LINK (+)
LOCAL CAT DATA LINK (-)
WARNING LAMP/GENERAL ALARM RELAY
START AID SWITCH
L10 PTO INT/E-STOP
ETHER RELAY ON
SECONDARY SPEED TIMING
+V BATTERY SWITCHED
993-BR
997-OR
998-BR
F725-WH
F711-GN
F704-OR
E796-GN
F715-PU
J981-WH
A700-OR
F705-PK
J982-OR
893-GN
F708-YL
F717-YL
F716-WH
F710-BR
150-OR-14
150-OR-14
FUEL PRESSURE SNSR - FILTERED
CAN DATA LINK (+)
TURBO EXHAUST TEMP RH
OIL PRESSURE SNSR - UNFILTERED
PTO RAMP UP/SET SWITCH
PTO ENABLE SWITCH
GLOBAL CAT DATA LINK (+)
DIG SNSR PWR (8V)
MAINTENANCE CLEAR SWITCH
L9 PTO RAMP UP/ON
TIMING CAL-FAN SPD(+)
TIMING CAL-FAN SPD(-)
MAINTENANCE LAMP
OVERSPEED/TORQUE LIMIT SWITCH
EMERGENCY STOP
L8 ANALOG SENSOR POWER/RETURN
BATTERY(-)
BATTERY(-)
BATTERY(+)
BATTERY(+)
ANA SNSR RETURN
34
PTO INTERRUPT
01
17
16
26
37
31
32
38
07
09
03
27
25
20
24
14
08
02
40
30
36
29
35
21
13
28
22
33
18
12
11
05
19
23
06
04
ANA SNSR PWR (5V)
DIG SNSR RETURN
PTO RAMP DOWN/RESUME SWITCH
L7 SENSOR INPUT
OPEN (DO NOT USE)
L6 SENSOR INPUT
L5 ETHER CONTROL/OVERSPEED/TORQUE LIMIT
L4 TIMING CALIBRATION
L3 PRIMARY SPEED TIMING
L2
F703-GY
A
XXXX-XX
L2 DIGITAL SENSOR POWER/RETURN
B
C
C
B
A
OR-18
YL-18
GN-18
WH-18
BK-18
F712-GY
GN-18
YL-18
OR-18
CAN DATA LINK (-)
TWISTED PAIR
L1 CYLINDER SOLNOID DRIVE/RETURN
A
B
J
H
D
D839-YL
200-BK
993-BR
229-BK-14
F710-BR
F707-WH
F720-GN
B429-YL
113-OR
19
20
15
11
F701-BR
G971-BR
OPEN (DO NOT USE)
OR-18
E796-GN
E796-GN
F701-BR
F732-PK
998-BR
10
START/STOP/RUN
J981-WH
994-GY
J982-OR
150-OR
229-BK
F703-GY
998-BR
892-BR
893-GN
OR-18
BK-18
WH-18
994-GY
150-OR
229-BK
C
B
A
38
22
TWISTED SHEILDED
PAIR
04
29
39
30
25
33
28
F715-PU
G971-BR-14
A249-BK
F721-GY
L12
NOTE BLOCK
A249-BK
F722-OR
L2
L10
L11
L12
F721-GY
L9
F719-BR
L10
L12
F718-BU
TWISTED PAIR
TWISTED PAIR
E
NOTE B:
L11
L11
L11
L5
F706-PU
229-BK
37
36
26
23
24
40
21
18
27
31
32
09
17
16
14
10
08
05
35
34
02
01
03
07
06
150-OR
F712-GY
G971-BR
F711-GN
G971-BR
G971-BR
DIAGNOSTIC LAMP
F712-GY
F711-GN
F705-PK
F701-BR
F711-GN
F712-GY
F716-WH
F709-BU
F717-YL
F717-YL
892-BR
893-GN
229-BK-14
229-BK-14
F711-GN
150-OR-14
150-OR-14
A700-OR
F702-GN
229-BK-14
F708-YL
F705-PK
G971-BR-14
F701-BR
997-OR
A249-BK
13
12
F705-PK
F712-GY
MAINT. LAMP
MAINT. CLR SW.
CAT DATA LINK (-)
CAT DATA LINK (+)
START ENABLE RELAY
BATT (+) UNSWITCHED
BATT (-) UNSWITCHED
AIR SHUTOFF COMMON (LEFT)
DIGITAL SENSOR POWER
PRIMARY THROTTLE
ANALOG SENSOR PWR (+5V)
J1939 DATALINK SHIELD
J1939 DATALINK (+)
DIGITAL SENSOR RETURN
PTO INTERUPT
DIAGNOSTIC LAMP
TORQUE LIMIT
AIR SHUTOFF RELAY
J1939 DATALINK (-)
EMERGENCY STOP
AIR SHUTOFF + (LEFT)
OPEN
INTERMEDIATE SPEED SW.
PTO ENABLE SW.
PTO RAMP UP SW.
PTO RAMP DN SW.
WARNING LAMP/GEN ALARM
AIR SHUTOFF + (RIGHT)
ENGINE OIL TEMP SNSR SIG
ENGINE OIL TEMP SNSR RET
ANALOG SENSOR RETURN
AIR SHUTOFF COMMON (RIGHT)
START AID SWITCH
ETHER RELAY ON
COOLANT LEVEL SENSOR
BATTERY + (SWITCHED)
BATT (+) UNSWITCHED
OPEN
BATT (-) UNSWITCHED
START/STOP/RUN
L14
L5
L5
L5
L2
L2
TWISTED PAIR
TWISTED PAIR
L11
L10
L10
L9
L13
L13
L13
L13
L8
L8
L7
L7
L2
L2
L2
L1
L1
L1
L1
L11
L14
L14
TWISTED
PAIR
THIS SCHEMATIC IS FOR THE 3508B/3512B/3516B EUI
INDUSTRIAL ENGINES (186-4257 CHG 01).
TWISTED SHEILDED
PAIR
L12
