Jeep XJ. Manual — part 651
ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 51 WAY
CAV
CIRCUIT
FUNCTION
1
Z12 14BK/TN
GROUND
2
A142 16DG/OR
AUTOMATIC SHUT DOWN RELAY OUTPUT
3
-
-
4
-
-
5
C13 20DB/OR
A/C COMPRESSOR CLUTCH RELAY CONTROL
6
K159 18VT/RD
ENGINE SPEED SENSOR SIGNAL
7
-
-
8
C103 18DG
A/C REQUEST INPUT
9
K29 20WT/PK
BRAKE LAMP SWITCH SENSE
10
C22 20DB/WT
A/C PRESSURE SWITCH SENSE
11
K6 20VT/WT
5V SUPPLY
12
K151 20WT
LOW IDLE POSITION SWITCH SIGNAL
13
K21 20BK/RD
INTAKE AIR TEMPERATURE SENSOR SIGNAL
14
-
-
15
-
-
16
-
-
17
C27 18DB/PK
RADIATOR FAN RELAY CONTROL
18
G8 18LB/BK
FUEL MONITOR OUTPUT SIGNAL
19
-
-
20
L50 20WT/TN
BRAKE LAMP SWITCH OUTPUT
21
-
-
22
-
-
23
K255 20WT/DG
ACCELERATOR PEDAL POSITION SENSOR GROUND
24
K22 20OR/DB
ACCELERATOR PEDAL POSITION SENSOR SIGNAL
25
-
-
26
-
-
27
Z12 16BK/TN
GROUND
28
A142 16DG/OR
AUTOMATIC SHUT DOWN RELAY OUTPUT
29
K35 18GY/YL
EGR SOLENOID CONTROL
30
V66 18RD/LG
SPEED CONTROL INDICATOR SIGNAL
31
-
-
32
K185 20OR/LB
WAIT TO START INDICATOR DRIVER
33
K51 20DB/YL
AUTOMATIC SHUT DOWN RELAY CONTROL
34
K48 18OR/RD
FAULT INDICATOR REQUEST INPUT
35
-
-
36
-
-
37
-
-
38
G55 18OR/BK
ENGINE DISABLE SIGNAL
39
K9 20LB
5V SUPPLY
40
K1 20DG/RD
BOOST PRESSURE SENSOR SIGNAL
41
-
-
42
K152 18WT
GLOW PLUG RELAY CONTROL
43
-
-
44
-
-
45
D21 20PK
SCI TRANSMIT
46
-
-
47
F12 18DB/WT
FUSED IGNITION SWITCH OUTPUT (RUN-START)
48
C48 18TN
RADIATOR FAN REQUEST
49
-
-
50
-
-
51
G7 20WT/OR
VEHICLE SPEED SENSOR SIGNAL
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
256
CONNECTOR PINOUTS
ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 29 WAY
CAV
CIRCUIT
FUNCTION
52
-
-
53
K156 20GY
FUEL TEMPERATURE SENSOR SIGNAL
54
K2 20TN/BK
ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
55
K68 18LG/YL
NEEDLE MOVEMENT SENSOR GROUND
56
K134 20LB/BK
CONTROL SLEEVE POSITION SENSOR SIGNAL
57
K57 20LG/OR
CONTROL SLEEVE POSITION SENSOR MIDDLE TAP
58
K135 20WT/BK
CONTROL SLEEVE POSITION SENSOR MEASURE COIL
59
K140 18TN/WT
FUEL QUANTITY ACTUATOR CONTROL
60
V37 20RD/LG
SPEED CONTROL SWITCH SIGNAL
61
K4 20BK/LB
SENSOR GROUND
62
K67 18BR/BK
NEEDLE MOVEMENT SENSOR SIGNAL
63
-
-
64
-
-
65
-
-
66
K140 18TN/WT
FUEL QUANTITY ACTUATOR CONTROL
67
K24 20GY/BK
ENGINE SPEED SENSOR SIGNAL
68
-
-
69
K3 20LG/BK
ENGINE SPEED SENSOR GROUND
70
-
-
71
-
-
72
-
-
73
-
-
74
-
-
75
-
-
76
-
-
77
K153 18OR
FUEL SHUTDOWN SOLENOID CONTROL
78
-
-
79
K126 18LG
FUEL TIMING SOLENOID CONTROL
80
K140 18TN/WT
FUEL QUANTITY ACTUATOR CONTROL
ENGINE COOLANT TEMPERATURE SENSOR NO. 1 (DIESEL ECM) - BLACK 2 WAY
CAV
CIRCUIT
FUNCTION
1
K2 18TN/BK
ECM ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2
K4 18BK/LB
SENSOR GROUND
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
257
CONNECTOR PINOUTS
ENGINE COOLANT TEMPERATURE SENSOR NO. 2 (DIESEL PCM) - BLACK 2 WAY
CAV
CIRCUIT
FUNCTION
1
K222 18TN/RD
PCM ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2
K167 18BR/YL
SENSOR GROUND
ENGINE SPEED SENSOR (DIESEL) - BLACK 3 WAY
CAV
CIRCUIT
FUNCTION
1
K3 20LG/BK
ENGINE SPEED SENSOR GROUND
2
-
-
3
K24 20GY/BK
ENGINE SPEED SENSOR SIGNAL
FUEL HEATER (DIESEL) - 2 WAY
CAV
CIRCUIT
FUNCTION
1
A93 14RD/BK
FUEL HEATER RELAY OUTPUT
2
Z1 16BK
GROUND
FUEL INJECTION PUMP (DIESEL) - BLACK 10 WAY
CAV
CIRCUIT
FUNCTION
1
K134 20LB/BK
CONTROL SLEEVE POSITION SENSOR SIGNAL
2
K57 20LG/OR
CONTROL SLEEVE POSITION SENSOR MIDDLE TAP SIGNAL
3
K135 20WT/BK
CONTROL SLEEVE POSITION SENSOR MEASURE COIL
4
K4 20BK/LB
SENSOR GROUND
5
K126 18LG
FUEL TIMING SOLENOID CONTROL
6
K153 18OR
FUEL SHUT DOWN SOLENOID CONTROL
7
K156 20GY
FUEL TEMPERATURE SENSOR SIGNAL
8
K140 16TN/WT
FUEL QUANTITY ACTUATOR CONTROL
9
A142 16DG/OR
AUTOMATIC SHUT DOWN RELAY OUTPUT
10
F142 16DG/OR
FUSED AUTOMATIC SHUT DOWN RELAY OUTPUT
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
258
CONNECTOR PINOUTS
FUEL LEVEL SENSOR (DIESEL) - BLACK 6 WAY
CAV
CIRCUIT
FUNCTION
1
A141 16DG/WT
NOT USED
2
-
-
3
K226 20DB/LG
FUEL LEVEL SENSOR SIGNAL
4
K167 20BR/YL
SENSOR GROUND
5
-
-
6
Z1 16BK
NOT USED
GENERATOR - BLACK 2 WAY
CAV
CIRCUIT
FUNCTION
1
K72 16DG/OR (GAS)
GENERATOR SOURCE
1
K72 18DG/OR (DIESEL)
GENERATOR SOURCE
2
K20 16DG (GAS)
GENERATOR FIELD
2
K20 18DG (DIESEL)
GENERATOR FIELD
GENERATOR - 3 WAY
CAV
CIRCUIT
FUNCTION
1
-
FIELD WIRES
2
-
FIELD WIRE CONNECTOR
3
-
B(+) (OUTPUT TERMINALS)
GLOW PLUG RELAY (DIESEL) - 4 WAY
CAV
CIRCUIT
FUNCTION
1
A54 10RD/GY
FUSED B(+)
2
F142 18DG/OR
FUSED AUTOMATIC SHUT DOWN RELAY OUTPUT
3
K152 18WT
GLOW PLUG RELAY CONTROL
4
K154 10GY
GLOW PLUG RELAY OUTPUT
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
259
CONNECTOR PINOUTS
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