Difference between revisions of "USDM VIII ECU Pinout"
Jump to navigation
Jump to search
(Front/Rear O2 sensor and heater pins were swapped accidentally. Fixed.) |
(→C-117: Add note about pin 56 being OBD-II pine 1, and note that pin 62 is the OBD-II K-line.) |
||
Line 170: | Line 170: | ||
| 55||Evaporative emission ventilation solenoid | | 55||Evaporative emission ventilation solenoid | ||
|- | |- | ||
− | | 56|| | + | | 56||Data link (OBD-II/MUT-III comms, pin 1 on OBD-II port, C-14) |
|- | |- | ||
| 57||Charge air cooler water spray relay control | | 57||Charge air cooler water spray relay control | ||
Line 182: | Line 182: | ||
| 61||Fuel tank differential pressure sensor signal | | 61||Fuel tank differential pressure sensor signal | ||
|- | |- | ||
− | | 62||Data link (OBD-II/MUT-III comms, pin 7 on OBD-II port, C-14) | + | | 62||Data link (OBD-II/MUT-III comms, K-line, pin 7 on OBD-II port, C-14) |
|} | |} | ||
− | |||
= C-115 = | = C-115 = |
Revision as of 19:09, 15 January 2010
The USDM Evo VIII ECU uses a four-plug harness, with two rows of pins for each plug. The factory service manual refers to these plugs as C-121, C-119, C-117, and C-115.
For a picture of the ECU-side of the harness, see Road Race Engineering's EVO VIII pinout page.
Contents
Complete harness
Pins 1, 2, 3, 12, 13, 14, 15, 16, 25, 26, 71, 80, 81, 82, 91, and 92 (16 total) are "large"; the remaining (60) pins are "small". Large pins have been marked in the diagrams below with a yellow background color.
C-121 | C-119 | C-117 | C-115 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
C-121
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
Pin | Description |
---|---|
1 | Injector #1 |
2 | Injector #3 |
3 | Fuel pressure solenoid |
4 | Idle air control motor, coil A1 |
5 | Idle air control motor, coil B1 |
6 | Exhaust gas recirculation solenoid relay control, ground |
7 | |
8 | A/C compressor clutch control, ground |
9 | Evaporative emission purge solenoid |
10 | Ignition coil, cylinder #1 and #4 |
11 | Turbocharger wastegate solenoid |
12 | 12V power (through MFI relay) |
13 | Chassis ground |
14 | Injector #2 |
15 | Injector #4 |
16 | |
17 | Idle air control motor, coil A2 |
18 | Idle air control motor, coil B2 |
19 | Volume airflow sensor reset (MAF filter?) |
20 | |
21 | A/C condenser fan control |
22 | Fuel pump relay |
23 | Ignition coil, cylinder #2 and #3 |
24 | A/C control (?) |
25 | 12V power (through MFI relay) |
26 | Chassis ground |
C-119
31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 |
39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 |
Pin | Description |
---|---|
31 | |
32 | A/C condenser fan relay (high) |
33 | Alternator voltage regulator, ground |
34 | A/C condenser fan relay (low) |
35 | Charge air cooler water spray fluid meter |
36 | Check-engine light |
37 | Power steering pressure sensor signal |
38 | MFI relay control, ground |
39 | Fuel pump relay control, ground |
40 | Sensor ground (IAT, cam position, fuel tank pressure, MDP, TPS) |
41 | Alternator voltage regulator signal |
42 | Aftermarket use: ADC 0F, typically used for map switching in TephraMod |
43 | Clutch pedal position switch |
44 | Charge air cooler water spray switch (auto control) |
45 | A/C control (?) |
46 | Fuel level sender signal (gauge) |
C-117
51 | 52 | 53 | 54 | 55 | 56 |
57 | 58 | 59 | 60 | 61 | 62 |
Pin | Description |
---|---|
51 | Engine immobilizer system |
52 | |
53 | |
54 | Rear O2 sensor heater control |
55 | Evaporative emission ventilation solenoid |
56 | Data link (OBD-II/MUT-III comms, pin 1 on OBD-II port, C-14) |
57 | Charge air cooler water spray relay control |
58 | Engine speed (RPM) |
59 | |
60 | Front O2 sensor heater control |
61 | Fuel tank differential pressure sensor signal |
62 | Data link (OBD-II/MUT-III comms, K-line, pin 7 on OBD-II port, C-14) |
C-115
71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 |
82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 |
Pin | Description |
---|---|
71 | Starter relay signal |
72 | Intake air temperature sensor signal |
73 | MAP sensor signal |
74 | Fuel level sender signal (low-fuel light) |
75 | Rear O2 sensor signal |
76 | Front O2 sensor signal |
77 | Fuel temperature sensor signal |
78 | Knock sensor signal |
79 | Data link (flash signal, pin 26 on diagnostic port, C-15) |
80 | 12V power (backup ECU power, wired directly from battery) |
81 | Throttle position sensor power (+5V) |
82 | Ignition switch IG1 (power when ignition in postion "ON" and "START") |
83 | Coolant temperature sensor signal |
84 | Throttle position sensor signal |
85 | MAF barometric pressure sensor signal |
86 | Vehicle speed sensor signal |
87 | |
88 | Intake cam position sensor signal |
89 | Crankshaft position sensor signal |
90 | MAF sensor signal |
91 | Charge air cooler water spray switch (manual control) |
92 | Sensor ground (O2 heaters, coolant temp, tps signal, MAP, fuel tank pressure signal) |