©
1998 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR1072-01
February 1998
3176C, 3196, 3406E & 3456
Industrial Engines
6BR1-UP
1DW1-UP
2AW1-UP
3LW1-UP
Left Side View
TIMING CALIBRATION CONNECTOR
(J26/P26)
ELECTRONIC CONTROL MODULE
FUEL PRESSURE
(J49/P49)
FUEL TEMPERATURE
(J43/P43)
ATMOSPHERIC PRESSURE
(J27/P27)
BACKUP SPEED TIMING
(J44/P44)
INLET AIR MANIFOLD PRESSURE
(J23/P23)
INLET AIR TEMPERATURE
(J88/P88)
PRIMARY SPEED/TIMING
(J20/P20)
COOLANT TEMPERATURE
(J21/P21)
OIL PRESSURE
(J22/P22)
FUEL PRESSURE
(J49/P49)
Front View
Front Cover
Top View
FUEL TEMPERATURE
(J43/P43)
INLET AIR TEMPERATURE
(J88/P88)
TIMING CALIBRATION
(J26/P26)
ELECTRONIC CONTROL MODULE
ATMOSPHERIC PRESSURE
(J27/P27)
INLET AIR MANIFOLD PRESSURE
(J23/P23)
TOP SPEED/TIMING
(J44/P44)
BOTTOM SPEED/TIMING
(J20/P20)
OIL PRESSURE
COOLANT PRESSURE
(J21/P21)
FUEL PRESSURE
(J49/P49)
Right Side View
Left Side View
INLET AIR MANIFOLD PRESSURE
(J23/P23)
BACKUP SPEED/TIMING
(J44/P44)
PRIMARY SPEED/TIMING
(J20/P20)
ATMOSPHERIC PRESSURE
(J27/P27)
FUEL TEMPERATURE
(J43/P43)
INLET AIR TEMPERATURE
(J88/P88)
TIMING CALIBRATION
(J26/P26)
ELECTRONIC CONTROL MODULE
COOLANT TEMPERATURE
(J21/P21)
OIL PRESSURE
(J22/P22)
Left Side View
Right Side View
E25717
CONNECTION LOCATION VIEWS 3456 INDUSTRIAL ENGINE ONLY
CONNECTION LOCATION VIEWS 3406E INDUSTRIAL ENGINE ONLY
CONNECTION LOCATION VIEWS 3176 AND 3196 INDUSTRIAL ENGINES ONLY
G810/PU
G811/YL
L983/WH
L984/OR
L985/YL
A706/GY
A705/BU
A704/GN
A703/BR
A702/PU
A701/GY
MAX LENGTH 40 METERS
A
B
C
6
5
4
3
2
1
C
A
B
TERMINATION
RESISTOR
(NOTE C & M)
120
(NOTE H)
NOTE C: MAXIMUM LENGTH OF DATA BUS (TERMINATION RESISTOR
NOTE M: REFER TO THE INSTALLATION GUIDE FOR ADDITION
NOTE L: 12 VOLT BATTERY SYSTEMS MUST USE THE DC/DC CONVERTER
FOR THE EMS TO OPERATE PROPERLY. 24 VOLT SYSTEMS
SHOULD CONNECT SWITCHED BATTERY DIRECT TO PINS
NOTE K: WHEN THE SHUTDOWN SWITCH IS CONNECTED TO BATTERY (-)
THE ECM DISABLES THE FUEL INJECTION SIGNAL. THIS
ACTION CAUSES THE ENGINE TO SHUTDOWN WHILE LEAVING
NOTE H: THE DEFAULT SETTING FOR THE EMS IS METRIC UNITS.
IF METRIC UNITS ARE REQUIRED NO CONNECTION IS NEEDED.
IF U.S. UNITS ARE REQUIRED, A PERMANENT CONNECTION TO
NOTE G: ONE MAIN EMS MODULE IS REQUIRED FOR EACH DESIRED MONITORING
STATION. THE TACHOMETER AND/OR QUAD GAGE UNITS ARE
OPTIONAL AND WILL NOT OPERATE WITHOUT CONNECTION TO
NOTE F: PIN 22 ON THE EMS MAIN MODULE 40 PIN CONNECTOR
(NOTE J)
(NOTES E & M)
120
GROUND STUD
OPTIONAL REMOTE
TACHOMETER OR
QUAD GAGE
(NOTES G & M)
PTO RAMP
UP/DOWN SWITCH
DEVICE
DC/DC CONVERTER
(NOTES L & M)
TERMINATION
RESISTOR
(NOTE C & M)
(NOTE M)
QUAD GAGE
(NOTE G)
TACHOMETER
(NOTE G)
MAIN UNIT
(NOTE G)
40
39
38
37
36
32
31
30
29
28
27
26
24
22
21
19
18
17
16
12
11
10
9
8
6
3
33
4
7
13
23
20
35
34
25
15
14
5
2
1
0
5
10
15
20
25
30
RPM X100
6
5
4
3
2
1
C
A
B
SIG
+ BAT.
- BAT.
(P35)
+BAT. (UNSWITCHED)(NOTE B)
+BAT. (SWITCHED)
J1939 SHIELD
J1939 DATA -
J1939 DATA +
ATA DATA LINK -
ATA DATA LINK +
CAT DATA LINK -
CAT DATA LINK +
-BAT.
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
PTO RAMP UP SW
PTO RAMP DOWN SW
COOLANT LEVEL SNSR
REMOTE SHUTDOWN SW
DIAGNOSTIC LAMP
DIGITAL SNSR POWER (+8V)
INTERMEDIATE SPEED SW
ETHER START VALVE RELAY
STARTING AID SW
MAINTENANCE OVERDUE LAMP
BKUP SP/TMG SNSR
OVERSPEED VERIFY SW
THROTTLE POSITION SNSR
DIGITAL SNSR RETURN
ANALOG SNSR PWR (5V)
ANALOG SNSR RETURN
UNUSED
UNUSED
PTO ENABLE SW
WARNING LAMP
AUXILIARY TEMP SNSR
MAINTENANCE CLEAR
UNUSED
UNUSED
UNUSED
TORQUE LIMIT SW
UNUSED
UNUSED
UNUSED
UNUSED
TURBO OUTLET PRESS.
ATMOSPHERIC PRESS. SNSR
ENG OIL PRESS. SNSR
FUEL TEMP SNSR
FUEL PRESS. SNSR
SOLENOID COMMON
AIR SHUTOFF SOL
UNUSED
AUXILIARY PRESSURE SNSR
PTO INTERRUPT SW
ANALOG SNSR POWER (+5V)
ANALOG SNSR COMMON
INLET AIR TEMP SNSR
+V ENG SP/TMG
ENG SP/TMG COMMON
PRIM. SP/TMG SNSR
COOL. TEMP SNSR
INJECTOR COMMON 1 & 2
INJECTOR COMMON 3 & 4
INJECTOR COMMON 5 & 6
INJECTOR 6
INJECTOR 5
INJECTOR 4
INJECTOR 3
INJECTOR 2
INJECTOR 1
J1/P1
MAX LENGTH 1 METER
(NOTE M)
MAX LENGTH 0.2 METERS
J2/P2
150/OR
G971/BR
G969/YL
G468/GN
E452/WH
167/OR
A274/BK
G469/BU
A307/GY
125/OR
A243/BK
382/PK
M910/OR
F426/BU
M909/GN
F716/WH
G968/WH
387/PK
M904/OR
381/PU
G970/BU
G955/GN
G967/WH
F424/YL
F404/RD
F420/GN
M905/PU
120/YL
892/BR
893/GN
M903/GN
M902/OR
E794/YL
E793/BU
E797/WH
E798/PK
M908/YL
A234/BK
K900/YL
K990/GN
A
B
C
A
B
C
A
B
C
A
B
C
C
A
B
1
4
5
11
36
8
9
33
10
14
15
22
38
12
2
27
28
40
19
29
3
30
39
13
24
25
20
26
6
7
21
23
31
32
34
35
37
16
17
18
+V IN-V IN
+V OUT-V OUT
(NOTE F)
ECM
CB
(NOTE D)
CB
(NOTE B)
CB
(P34)
OFF ENGINE
PTO ENABLE SW
PTO INTERUPT SW
OVERSPEED VERIFY SW
INTERMEDIATE SPEED SW
120/YL
229/BK
893/GN
892/BR
E793/BU
E794/YL
ETHER
VALVE
MAINTENANCE
OVERDUE LAMP
DATA LINK
BOOSTER
OPTIONAL EMS DISPLAY MODULES
+BAT.
-BAT.
NC
CAT DATA LINK +
CAT DATA LINK -
NC
NC
ATA DATA LINK -
ATA DATA LINK +
+24V
- BAT.
US/METRIC
SCROLL FORWARD
CAT DATA LINK -
CAT DATA LINK +
UNUSED
WARNING LAMP
WARNING
BACKLIGHT LAMP PWR
SCROLL BACKWARD
1
2
3
4
5
6
7
8
9
10
11
12
+ BAT.
- BAT.
CAT DATA LINK -
CAT DATA LINK +
ATA DATA LINK +
ATA DATA LINK -
REMOTE SHUTDOWN SW
TORQUE LIMIT SW
MAINTENANCE CLEAR SW
+BAT. (UNSWITCHED)
AIR SHUTOFF SOLENOID
SOLENOID COMMON
AUXILIARY TEMP SNSR
COOLANT LEVEL SNSR
DIG SNSR PWR (+8V)
DIG SNSR RETURN
AUXILIARY PRESS. SNSR
THROTTLE POSITION SNSR
ANLG SNSR PWR (+5V)
ANLG SNSR RETURN
ETHER START VALVE RELAY
STARTING AID SW
MAINTENANCE CLEAR SW
TORQUE LIMIT SW
REMOTE SHUTDOWN SW
INTERMEDIATE SPEED SW
OVERSPEED VERIFY SW
PTO INTERRUPT SW
PTO ENABLE SW
NC
PTO RAMP UP SW
PTO RAMP DOWN SW
MAINTENANCE OVERDUE LAMP
DIAGNOSTIC LAMP
WARNING LAMP
NC
+BAT. (SWITCHED)
CAT DATA LINK -
CAT DATA LINK +
NC
NC
ATA DATA LINK +
ATA DATA LINK -
NC
NC
NC
J1939 SHIELD
J1939 DATA +
J1939 DATA -
15A
15A
STARTING AID SW
A
C
B
+8V
SIGNAL
RETURN
A
B
C
E
D
F
G
J
H
CIRCUITS WITHIN THIS AREA ARE RECOMMENDATIONS
(NOTE M)
ST
ON
OFF
B
S
C
R
G S
MTR BAT
SM
CIS
GND
ALT
-
+5V
SIGNAL
RETURN
+
A
C
B
DIAGNOSTIC LAMP
BATTERY
4
6
26
39
33
1
7
3
9
5
28
40
10
11
12
14
16
17
19
23
25
15
2
8
22
35
24
34
13
21
18
32
37
29
36
30
31
38
20
27
24
31
25
38
11
16
21
32
33
35
23
20
8
3
9
7
13
19
15
26
4
10
40
36
30
2
1
29
37
14
5
17
27
34
28
22
18
12
6
39
A
B
C
D
E
F
G
H
J
(P19B)
AUXILIARY
+8V
SIGNAL
RETURN
A
C
B
(P19A)
AUXILIARY
A
C
B
+5V
SIGNAL
RETURN
150/OR
120/YL
A234/BK
K990/GN
K900/YL
E793/BU
E794/YL
892/BR
893/GN
229/BK
M902/OR
M903/GN
G955/GN
G967/WH
E452/WH
F716/WH
F404/RD
167/OR
G968/WH
382/PK
M910/OR
F424/YL
F732/PK
387/PK
A307/GY
A274/BK
125/OR
A243/BK
M908/YL
M905/PU
381/PU
F420/GN
G468/GN
F426/BU
E798/PK
E797/WH
M909/GN
A746/PK
A747/GY
994/GY
F421/YL
413/BR
G969/YL
G971/BR
G970/BU
G469/BU
M904/OR
G811/YL
G809/GN
G808/BU
997/OR
993/BR
C967/BU
996/GN
998/BR
999/WH
995/BU
WIRE CODE
4
3
2
1
STD ENGINE HARNESS WIRING
OPTIONAL ATCH WIRING
CUSTOMER SUPPLIED WIRING
L983/WH
L984/OR
L985/YL
A706/GY
A705/BU
A704/GN
A703/BR
A702/PU
A701/GY
G810/PU
8
7
6
5
4
3
2
1
997/OR
994/GY
993/BR
997/OR
A747/GY
993/BR
997/OR
A746/PK
993/BR
997/OR
995/BU
993/BR
998/BR
996/GN
F732/PK
996/GN
998/BR
999/WH
ABBREVIATION
MAX LENGTH 30 METERS
J3/P3
(J42)
CUST. SUPPLIED ENG
SERVICE TOOL CONN
P91/J91
J49/P49
P43/J43
J22/P22
J27/P27
J23/P23
P21/J21
J44/P44
J60
J20/P20
A
C
B
+5V
SIGNAL
RETURN
+5V
SIGNAL
RETURN
A
C
B
A
C
B
+5V
SIGNAL
RETURN
+5V
SIGNAL
RETURN
A
C
B
B
A
C
RETURN
+12V
SIGNAL
WARNING LAMP
NOTE E: USE RECOMMENDED CABLE OR EQUIVALENT PER SAE J1939
AIR SHUTOFF
SOLENOID
997/OR
F421/YL
993/BR
+5V
SIGNAL
RETURN
A
C
B
+12V
RETURN
SIGNAL
A
B
C
A
C
B
P88/J88
G808/BU
G809/GN
L983/WH
L984/OR
L985/YL
A706/GY
A705/BU
A704/GN
A703/BR
A702/PU
A701/GY
CYL
NO.6
CYL
NO.5
CYL
NO.4
CYL
NO.3
12
10
8
6
5
4
3
2
1
11
9
7
CYL
NO.1
997/OR
413/BR
993/BR
P26/J26
997/OR
C967/BU
993/BR
+5V
SIGNAL
RETURN
A
B
C
CYL
NO.2
+
SMMS
NO ADDITIONAL CONNECTIONS ARE ALLOWED TO ANY WIRES
WITHOUT CATERPILLAR ENGINEERING APPROVAL
UNLESS OTHERWISE SPECIFIED:
ALL WIRES TO BE 18 AWG OR LARGER SAE J1128 TYPE SXL OR
EQUIVALENT. FOR TWISTED PAIR SPECIFICATION SEE SAE J1708
ELIMINATION OF ANY COMPONENTS SHOWN WILL DISABLE CERTAIN
ENGINE FEATURES. CONTACT CATERPILLAR ENGINEERING WHEN
NOTE A: THE CUSTOMER CONNECTOR BRACKET GROUND STUD MUST
HAVE A DIRECT WIRE CONNECTION TO BATTERY (-). THIS
CONNECTION CAN BE MADE AT THE STARTER (-) TERMINAL.
NOTE B: TO AVOID LOSS OF JOB DATA STORED BY THE ECM,
DISCONNECT SWITCHES SHOULD NOT INTERRUPT EITHER THE ECM
A DASHED LINE INDICATES AN OPTIONAL FEATURE NOT AVAILABLE
ON ALL SYSTEMS.
BATTERY
DISCONNECT
SWITCH
(NOTE B)
1
2
(NOTE A)
TC PROBE +
TC PROBE -
TC SERVICE PROBE -
TC SERVICE PROBE +
FUEL PRESSURE SENSOR
FUEL TEMPERATURE SENSOR
ATMOSPHERIC PRESSURE SENSOR
TURBO OUTLET PRESSURE SENSOR
COOLANT TEMPERATURE SENSOR
BACKUP SPEED/TIMING SENSOR
PRIMARY SPEED/TIMING SENSOR
INLET AIR TEPERATURE SENSOR
ENGINE OIL PRESSURE SENSOR
THROTTLE POSITION
SENSOR
PRESSURE SENSOR
COOLANT LEVEL SENSOR
TEMPERATURE SENSOR
a
x10
CkPaMILESKMRPMSERV CODE
J44/P44
ECM
12
18
4
39
BOTTOM SPEED/TIMING SENSOR - (TC PROBE -)
BOTTOM SPEED/TIMING SENSOR + (TC PROBE +)
E966-YL
E965-BU
1
2
F723-PK
F724-BU
2
1
1
2
J26/P26
J20/P20
TOP SPEED TIMING SENSOR
BOTTOM SPEED TIMING SENSOR
3456 INDUSTRIAL ENGINE ONLY
(NOTE P)
(NOTE R)
BATTERY (-) OR UNSWITCHED BATTERY (+) LINES.
TO TERMINATION RESISTOR) IS 40 METERS.
NOTE D: PLACE APPROPRIATE CIRCUIT PROTECTION.
SPECIFICATIONS FOR ALL J1939 DATA LINK CONNECTIONS.
MUST BE CONNECTED TO BATTERY (-) FOR PROPER OPERATION.
A MAIN EMS MODULE.
COMPONENTS ARE SHOWN WITH THE KEY OFF.
BATTERY (-) IS REQUIRED.
NOTE J: 4 AWG WIRE.
THE ECM POWERED TO MONITOR ENGINE DIAGNOSTICS.
1 & 2 ON THE 12 PIN EMS HARNESS CUSTOMER CONNECTOR.
INSTALLATION DETAILS.
CONSIDERING COMPONENT REMOVAL.
NOTE P: APPLIES TO THE 3456 INDUSTRIAL ENGINE ONLY.
NOTE R: APPLIES TO THE 3176C/3196 AND 3406E INDUSTRIAL ENGINES ONLY.
J1/P1
J2/P2
TOP SPEED/TIMING SENSOR -
TOP SPEED/TIMING SENSOR +
TOP SPEED/TIMING SENSOR -
TOP SPEED TIMING/SENSOR +
BOTTOM SPEED/TIMING SENSOR -
BOTTOM SPEED/TIMING SENSOR +
ALTERNATOR
AMERICAN TRUCKING ASSOCIATION
CIRCUIT BREAKER
CUSTOMER IGNITION SWITCH
DIGITAL
ELECTRONIC CONTROL MODULE
NO CONNECTION
PULSE WIDTH MODULATION
STARTING MOTOR
START MOTOR MAG SWITCH
ALT
ATA
CB
CIS
DIG
ECM
NC
PWM
SM
SMMS
