ECU - Mitsubishi Genuine Part Number MD331116, MD335999 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
(B-59)
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(B-60)
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(B-61)
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(B-62)
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Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
1 | IN | 0.85 | Yellow with Blue trace | Injector 1 ground control | @ warm idle: Quickly depress accelerator | ~11 - 14.4v: Short dip in voltage |
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2 | IN | 0.85 | Blue with Green trace | Injector 3 ground control | ||||
3 | No connection | |||||||
4 | IN | 0.50 | Blue with Yellow trace | Idle speed control servo (coil A1) | 17 | @ warm idle: Stop and restart engine | ~0.0 - 6.0v repeating | |
5 | IN | 0.50 | Solid White | Idle speed control servo (coil B1) | 18 | |||
6 | No connection | |||||||
7 | No connection | |||||||
8 | IN | 0.50 | Black with Blue trace | Fuel pump relay ground control | With key ON @ idle | ~12.0 - 14.4v ~0.0 - 3.0v |
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9 | No connection | |||||||
10 | OUT | 0.50 | Black with Yellow trace | Ignition tower transistor A (? cyl 2 & 3) | 23 | With engine @3000rpm | ~0.3 - 3.0v | |
11 | No connection | |||||||
12 | IN | 0.50 | Red with Yellow trace | Power source | 38 | With key ON | ~12.0 - 14.4v | |
13 | OUT | 1.25 | Solid Black | Chassis ground | Resistance to chassis | 0.0 Ohms | ||
Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
14 | IN | 0.85 | Yellow with Black trace | Injector 2 ground control | @ warm idle: Quickly depress accelerator | ~11 - 14.4v: Short dip in voltage |
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15 | IN | 0.85 | Light Green with White trace | Injector 4 ground control | ||||
16 | No connection | |||||||
17 | IN | 0.50 | Solid Yellow | Idle speed control servo (coil A2) | 4 | @ warm idle: Stop and restart engine | ~0.0 - 6.0v repeating | |
18 | IN | 0.50 | Solid Green | Idle speed control servo (coil B2) | 5 | |||
19 | No connection | |||||||
20 | IN | 0.30 | Solid Blue | (?) Fan relay (high) (? A/C control unit) | 21 | Fan (off) & temp <90oc Fan (fast) & temp >105oc | ~12.0 - 14.4v ~0.0 - 3.0v |
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21 | IN | 0.50 | Solid Blue | (?) Fan relay (low) (? A/C ??? ) | 20 | Fan (off) & temp <90oc Fan (slow) & temp >105oc | ~12.0 - 14.4v ~0.0 - 3.0v |
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22 | IN | 0.30 | Green with White trace | A/C clutch relay | 45 | @ idle (A/C off): A/C ON | ~12.0 - 14.4v (>6.0v): ~0.0 - 3.0v |
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23 | OUT | 0.50 | Black with Green trace | Ignition power transistor B (? cyl 1 & 4) | 10 | With engine @3000rpm | ~0.3 - 3.0v | |
24 | No connection | |||||||
25 | IN | 0.50 | Red with Yellow trace | Power source | 38 | With key ON | ~12.0 - 14.4v | |
26 | OUT | 1.25 | Solid Black | Ground ( + O2 sensor wire shielding) | Resistance to chassis | 0.0 Ohms |
Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
31 | No connection | |||||||
32 | No connection | |||||||
33 | IN | 0.50 | Blue with White trace | (?) Alternator 'G' | 41 | @ warm idle (fan off): Turn ON headlights | ~0.2 - 3.5v: Voltage drop |
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34 | IN | 0.50 | Red with Blue trace | Oil control valve switch ground control (MIVEC solenoid) | ??? | ??? | ||
35 | No connection | |||||||
36 | IN | 0.50 | Light Green with Black trace | Engine check light ground control (dash) | Turn key from OFF to ON | ~0.0 - 3.0v rising to 9.0 - 14.4v afterseveral seconds. | ||
37 | OUT | 0.85 | Yellow with Black trace | 5v to powersteering oil pressure switch | @ warm idle: Stationary Turning steering wheel | ~12.0 - 14.4v ~0.0 - 3.0v |
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38 | IN | 0.50 | Solid Red | Engine control relay ground control (turns on 12 & 25) | 12 & 25 | With key ON With key OFF | ~12.0 - 14.4v ~0.0 - 3.0v |
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Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
39 | No connection | |||||||
40 | IN | 0.50 | Blue with White trace | Alarm light ground control (dash) | ??? | ??? | ||
41 | OUT | 0.50 | Solid White | 5v to Alternator 'FR' | 41 | @ warm idle (fan off): Turn on headlights | ~0.2 - 3.5v: Voltage drop |
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42 | No connection | |||||||
43 | No connection | |||||||
44 | No connection | |||||||
45 | IN | 0.30 | Green with Black trace | A/C (? Engine coolant Temperature switch) | 22 | @ idle: AC OFF AC ON | ~0.0 - 3.0v ~12.0 - 14.4v |
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46 | No connection |
Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
51 | No connection | |||||||
52 | No connection | |||||||
53 | No connection | |||||||
54 | No connection | |||||||
55 | No connection | |||||||
56 | OUT | 0.50 | Solid Light Green | Diagnositc connector (pin 1) | 62 | ??? | ??? | |
Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
57 | No connection | |||||||
58 | OUT | 0.50 | Solid White | RPM Signal | @ idle: | Factory tacho needle reading ~650 - 1500 rpm | ||
59 | No connection | |||||||
60 | IN | 0.50 | Solid Red | O2 sensor ground control (heater element) | 76 | @ warm idle: ~5000 rpm | ~0.0 - 3.0v ~12.0 - 14.4v |
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61 | No connection | |||||||
62 | OUT | 0.50 | Solid Orange | Diagnositc connector (pin 7) | 56 | ??? | ??? |
Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
71 | IN | 1.25 | Black with Yellow trace | Starter relay | 91 | Cranking engine | ~8.0v or more | |
72 | OUT | 0.50 | Red with White trace | 5v to Air intake temperature sensor | With key ON: temp 0o temp 20o temp 40o temp 80o | ~3.2 - 3.8v ~2.3 - 2.9v ~1.5 - 2.1v ~0.4 - 1.0v |
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73 | No connection | |||||||
74 | OUT | 0.50 | Solid Pink | High temp sensor (+) | 77 | ??? | ??? | |
75 | No connection | |||||||
76 | IN | 0.50 | Solid White | Y | O2 sensor (heated type) | 60 | @ warn idle: hold @ 2500 rpm | (digital multimeter) ~0.0 - 0.8v Repeating |
77 | IN | 0.50 | White with Blue trace | High temp sensor (-) | 74 | ??? | ??? | |
78 | IN | 0.50 | Solid White | Y | Detonation sensor | ??? | ??? | |
79 | No connection | |||||||
80 | IN | 0.50 | Red with Black trace | Battery backup | With key OFF | ~12.0 - 14.4v | ||
81 | OUT | 0.50 | Green with Blue trace | 5v to Throttle position sensor Atmospheric/Barometric pressure sensor | With key ON | ~4.5 - 5.5v | ||
Pin # | IN / OUT | Wire size (mm2) | Wire colour | Sheild | Description | Paired with | Test | Result |
82 | IN | 1.25 | Black with White trace | Gets 12v when the key is turned to start | With key ON With key OFF | ~12.0 - 14.4v ~0.0 - 3.0v |
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83 | OUT | 0.50 | Yellow with Green trace | 5v to engine coolant temperature sensor | With key ON: temp 0o temp 20o temp 40o temp 80o | ~3.2 - 3.8v ~2.3 - 2.9v ~1.3 - 1.9v ~0.3 - 0.8v |
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84 | IN | 0.50 | Green with White trace | Throttle position sensor | @ idle @ Wide open throttle | ~0.3 - 1.0v ~4.5 - 5.5v (Voltage increase smoothly as throttle is opened) |
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85 | IN | 0.50 | Yellow with Red trace | Atmospheric/Barometric pressure sensor (MAP) | @ idle Stab accelerator pedal | ~0.8 - 2.4v Sudden voltage rise |
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86 | OUT | 0.50 | Solid Yellow | Vechicle speed sensor | With key ON: move vechicle slowly forward | ~0.0 - 5.0v Repeating | ||
87 | OUT | 0.50 | Yellow with Red trace | Idle switch (in Throttle position sensor) | With key ON: Throttle closed Throttle opened |   ~0.0 - 1.0v > 4.0v |
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88 | OUT | 0.50 | Blue with Red trace | Camshaft position sensor | Cranking engine @ idle | ~0.4 - 3.0v ~0.5 - 2.0v |
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89 | OUT | 0.50 | Brown with Green trace | Crank angle sensor | Cranking engine @ idle | ~0.4 - 4.0v ~1.5 - 2.5v |
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90 | No connection | |||||||
91 | OUT | 1.25 | Solid Black | Ground | 71 | Continuity to chassis | True | |
92 | IN | 0.50 | Solid Black | Ground for: Throttle position sensor, Atmospheric/Barometric pressure sensor, Engine coolant temperature sensor, Plus others | Continuity to chassis | True |