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Mitsubishi Outlander XL Pinout Engine ECU engine family 4HN

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CONTROL SYSTEM

Engine-ECU

In accordance with the data input by the sensors, the engine-ECU determines (calculates) optimal control and actuates the output actuators to suit the constantly changing driving conditions.
The engine-ECU consists of microprocessor, random access memory (RAM), read only memory (ROM), and input-output (I/O interface).
It has adopted a rewritable flash-memory ROM in which the control data can be changed or corrected through the use of a special tool. In addition, it has adopted an electrically erasable programmable read only memory (EEPROM) so that the learned correction data will not be deleted even if the battery is disconnected.
ECU Connector Input / Output Pin Arrangement

1
CAN interface (low)
2
Diagnosis k-line
3
-
4
Accelerator pedal position sensor (sub) earth
5
Cruise control switch ground
6
Accelerator pedal position sensor (main) earth
7
Power supply voltage applied to accelerator pedal position sensor (main)
8
Sensor earth (water in fuel sensor and exhaust gas temperature sensor)
9
Exhaust differential pressure sensor earth
10
Air temperature sensor earth
11
Engine-ECU earth
12
Engine-ECU earth
13
CAN interface (high)
14
Clutch switch <M/T>
15
-
16
Exhaust gas temperature sensor signal
17
Cruise control switch signal
18
Accelerator pedal position sensor (main) signal
19
Accelerator pedal position sensor (sub) signal
20
-
21
Exhaust differential pressure sensor signal
22
Air temperature senor signal
23
Engine-ECU earth
24
Power source 2
25
Fuel pump relay
26
Starter relay
27
Water in fuel sensor signal
28
Stop lamp switch
29
Air flow sensor signal
30
-
31
Ignition switch-ST
32
Power supply voltage applied to accelerator pedal position sensor (sub)
33
Power supply voltage applied to exhaust differential pressure sensor
34
Ignition switch-IG
35
Power source 1
36
Power source 2
37
-
38
Radiator fan relay
39
-
40
Condenser fan relay
41
A/C compressor relay
42
Engine control relay 1
43
-
44
-
45
Fuel additive pump
46
-
47
Power source 1
48
Power source 2
51
Fuel flow regulator
52
EGR cooler solenoid valve
53
-
54
Engine oil level sensor signal
55
Engine oil pressure switch
56
EGR valve position sensor earth
57
Rail pressure sensor earth
58
Throttle position sensor earth
59
Intake air pressure sensor signal
60
Intake air pressure sensor earth
61
Proportional oxygen sensor (current pump)
62
Proportional oxygen sensor (Nernst voltage)
63
Power supply
64
High pressure fuel regulator
65
-
66
-
67
-
68
EGR valve position sensor signal
69
Rail pressure sensor signal
70
Throttle position sensor signal
71
-
72
-
73
Proportional oxygen sensor (current adjust)
74
Proportional oxygen sensor (virtual ground)
75
Power supply
76
Power supply voltage applied to throttle position sensor
77
Crank angle sensor ground
78
-
79
Power supply voltage applied to intake air pressure sensor
80
Power supply voltage applied to rail pressure sensor
81
Engine coolant temperature sensor earth
82
-
83
Engine oil temperature sensor signal
84
-
85
-
86
Camshaft position sensor earth
87
Power supply
88
Power supply voltage applied to crank angle sensor
89
Crank angle sensor signal
90
Glow plug relay
91
Power supply voltage applied to camshaft position sensor
92
Power supply voltage applied to EGR valve position sensor
93
Engine coolant temperature sensor signal
94
-
95
Oil temperature sensor earth
96
-
97
-
98
Camshaft position sensor signal
101
-
102
-
103
-
104
Fuel temperature sensor signal
105
Fuel temperature sensor earth
106
-
107
Alternator FR terminal
108
-
109
Power supply voltage applied to variable geometry position sensor
110
Alternator L terminal
111
No. 1 fuel injector (high)
112
No. 4 fuel injector (high)
113
Glow diagnosis signal
114
-
115
-
116
-
117
Variable geometry position sensor signal
118
Intake air temperature sensor signal
119
Intake air temperature sensor earth
120
-
121
EGR valve motor (minus)
122
EGR valve motor (plus)
123
No. 3 fuel injector (high)
124
No. 2 fuel injector (high)
125
-
126
-
127
Variable geometry position sensor earth
128
-
129
-
130
-
131
Throttle valve control motor (minus)
132
Variable geometry control motor (minus)
133
Variable geometry control motor (plus)
134
-
135
No. 1 fuel injector (low)
136
No. 4 fuel injector (low)
137
-
138
-
139
-
140
-
141
-
142
Throttle valve control motor (plus)
143
-
144
-
145
-
146
Proportional oxygen sensor heater
147
No. 3 fuel injector (low)
148
No. 2 fuel injector (low)
 
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