©
2001 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR9583
July 2001
C-12 Engine For Claas
Electrical System
BDL1-UP
Combine Applications
DT Connector Receptacle DT Connector Plug
Plug Wedge
Plug Wedge
Plug Wedge
Receptacle Wedge
Receptacle Wedge
Receptacle Wedge
HD Connector Receptacle
HD Connector Plug
Pin Contact
Sealing Plug
Socket Contact
Speed/Timing Sensor Connectors
150 Series Receptacle
IAPCV Connector
150 Series Plug
HarnessSide
ECM Connector P1
ECM Connector P2
Harness Side
ECMSide
ECMSide
ECM Connectors
30
87A
87
85
86
2
1
6
3
7
8
5
4
11
10
9
12
16
2
1
3
4
5
6
7
8
9
15
11
12
13
14
10
2
22
21
1
3
ALTERNATOR
+
GND
F59
F70FUSE
F34
-
+
12V
BATTERY
K53
START
RELAY
FROM K13/87A
TO MACHINE HARNESSTO MACHINE
ENGINE SENSORS
TO MACHINE HARNESS
FROM K51/87
TO OEM FUSES
BATTERY
DISCONNECT
SWITCH
SG
BATMTR
STARTING
MOTOR
J1 P1
1
6
7
12
UNUSED
UNUSED
UNUSED
UNUSED
13
14
16
18
UNUSED
UNUSED
UNUSED
UNUSED
24
25
26
28
UNUSED
UNUSED
UNUSED
DIAGNOSTIC LAMP
31
33
32
UNUSED
UNUSED
UNUSED
30
UNUSED
36
51
37
UNUSED
UNUSED
UNUSED
62
68
69
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
55
UNUSED
35
UNUSED
RD
RD
57
43
39
48
11
67
46
17
5
66
15
3
22
23
21
2
4
BR/WH
BL/YL
40
44
45
64
41
56
10
58
BL
BL/YL
BL
GR/BR
GR
20
29
19
70
8
9
38
60
YL
WH
ELECTRONIC CONTROL MODULE (ECM)
DIAGNOSTIC ENABLE SW
KEY ENGINE CRANK
BR/YL54COOLANT LEVEL
KEY ON
CAT DATA LINK -
CAT DATA LINK +
+BAT.(UNSWITCHED)
COOLANT LEVEL RETURN
A +BAT.
START SWITCH
J
D
E
G
H
F
C
CAT DATA LINK -
CAT DATA LINK +
- BAT.B
SERVICE TOOL CONN
DIAGNOSTIC
ENABLE
SWITCH
DIAGNOSTIC
LAMP
120
B
A
C
TERMINATION
RESISTOR
COOLANT LEVEL
SWITCH
J1939
RD
RD
CONN MD
CONN G
CONN C
22 PIN
WH
YL
RD
27
52
53
59
49
47
42
50
BR
BR
34
61
63
-BAT.
-BAT.
BR/BL
OR/BL
YL/BL
+BAT.(UNSWITCHED)
+BAT.(UNSWITCHED)
J1939 SHIELD
J1939 DATA +
J1939 DATA -
J1939 SHIELD
J1939 DATA +
J1939 DATA -
BR65
-BAT.
5
6
8
3
7
1
CIRCUITS WITHIN THIS AREA ARE RECOMMENDATIONS
FRONT VIEW
LEFT SIDE VIEW
TOP VIEW
Engine Coolant
Temperature
Sensor
Fuel
Temperature
Sensor
Fuel
Pressure
Sensor
Atmospheric
Pressure
Sensor
Engine Oil
Pressure
Sensor
ECM
Connector
J1/P1
ECM
Connector
J2/P2
Intake Manifold
Air Temperature
Sensor
TC Probe
Connector
P400
Secondary
Speed/Timing
Sensor
(Camshaft)
Primary
Speed/Timing
Sensor
(Crankshaft)
Turbo Outlet
Pressure
Sensor
(Intake Manifold Air)
NO.1
CYL
NO.3
CYL CYL
NO.2
PRIMARY ENGINE
SPEED/TIMING SENSOR
(CRANKSHAFT)
(189-9266)
TURBO OUTLET
PRESSURE SENSOR
(INTAKE MANIFOLD AIR)
(161-9929)
ENGINE COOLANT
TEMPERATURE SENSOR
(130-9811)
SECONDARY ENGINE
SPEED/TIMING SENSOR
(CAMSHAFT)
(189-9801)
CYL
NO.4
CYL
NO.5
1P920/BR
P401/J401
CYL
NO.6
+5V
2
998/BR
999/WH
F732/PK
1
2
A
C
B
997/OR
A746/PK
993/BR
995/BU
R993/BR
J200/P200
P100/J100
P402J402
SIGNAL
RETURN
SIGNAL
COMMON
SIGNAL -
SIGNAL +
SIGNAL -
SIGNAL +
ENGINE OIL PRESSURE
SENSOR
(161-9931)
ATMOSPHERIC PRESSURE
SENSOR
(161-9925)
FUEL TEMPERATURE
SENSOR
(130-9811)
INTAKE MANIFOLD AIR
TEMPERATURE SENSOR
(130-9811)
FUEL PRESSURE SENSOR
(161-9931)
+5V
+5V
+5V
A
C
B
C
A997/OR
994/GY
997/OR
A747/GY
993/BR
2
A
1F421/YL
R993/BR
997/OR
993/BR B
J209/P209
P105/J105
J201/P201
J203/P203
C
B
1
2
413/BR
993/BR
C967/BU
R993/BR
P103/J103
SIGNAL
RETURN
SIGNAL
RETURN
SIGNAL
RETURN
SIGNAL
COMMON
SIGNAL
COMMON
L983/WH
L984/OR
L985/YL
A706/GY
A705/BU
12
8
10
6
5
L983/WH
L984/OR
L985/YL
A706/GY
A705/BU
P300/J300
A704/GN
A703/BR
A702/PU
A701/GY
TIMING
CALIBRATION
PROBE
CONNECTOR
4
3
1
2
9
7
11
A704/GN
A703/BR
A702/PU
A701/GY
2
1
G810/PU
G811/YL
P400
J2/P2
44
45
46
54
39
38
37
36
23
22
49
55
INJECTOR COMMON 1 & 2
INJECTOR COMMON 3 & 4
INJECTOR COMMON 5 & 6
INJECTOR 6
INJECTOR 5
INJECTOR 4
INJECTOR 3
INJECTOR 2
INJECTOR 1
TIMING CALIBRATION PROBE -
TIMING CALIBRATION PROBE +
PRIMARY (CRANK) SP/TMG SIG -
48
59
58
32
18
2
3
40
UNUSED
UNUSED
UNUSED
UNUSED
24
33
16
35
1
4
5
6
14
PRIMARY (CRANK) SP/TMG SIG +
SECONDARY (CAM) SP/TMG SIG -
SECONDARY (CAM) SP/TMG SIG +
ENGINE COOLANT TEMP. SNSR
PASSIVE SNSR COMMON
ANALOG SNSR POWER (+5V)
ANALOG SNSR COMMON
TURBO OUTLET PRESS. SNSR
ATMOSPHERIC PRESS. SNSR
ENG OIL PRESS. SNSR
FUEL TEMP. SNSR
FUEL PRESS. SNSR
INTAKE MANIF. AIR TEMP. SNSR
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
7
8
9
10
11
12
13
15
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
19
20
21
25
26
27
28
29
UNUSED 17
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
30
31
34
41
42
43
47
50
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
52
53
56
57
60
61
62
UNUSED 51
L983/WH
L984/OR
L985/YL
A706/GY
A705/BU
A704/GN
A703/BR
A702/PU
A701/GY
G810/PU
G811/YL
P920/BR
F732/PK
998/BR
999/WH
995/BU
R993/BR
997/OR
993/BR
A746/PK
A747/GY
994/GY
F421/YL
413/BR
C967/BU
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
64
65
66
67
68
69
70
UNUSED 63
ELECTRONIC CONTROL MODULE (ECM)
2
1
INPUT SIGNAL WIRES TO ECM
OUTPUT SIGNAL WIRES FROM ECM
SENSOR SUPPLY VOLTAGE
(+) BATTERY SUPPLY WIRES
SIGNAL PLUS
(-) BATTERY / SENSOR RETURN
SIGNAL MINUS
INPUT SIGNAL WIRES TO ECM
OUTPUT SIGNAL WIRES FROM ECM
SENSOR SUPPLY VOLTAGE
(+) BATTERY SUPPLY WIRES
SIGNAL PLUS
(-) BATTERY / SENSOR RETURN
SIGNAL MINUS
COMPONENTS ARE SHOWN WITH THE KEY OFF
