Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
100%
Stock ECU being replaced
0V sensor
ME221-C1-72 LOW SIDE RELAY 13
Ignition 1 voltage (key hot)
0V sensor
ME221-C1-17 ANA VOLT 3
0V sensor
5V ref
5V ref
5V ref
ME221-C1-57 ANA TEMP 2
0V sensor
ME221-C1-26 ANA VOLT 1
Ignition 1 voltage (key hot)
ME221-C1-79 TACHOMETER
0V sensor
ME221-C1-37 LOW SIDE RELAY 11
ME221-C1-43 LOW SIDE RELAY 14
ME221-C1-73 LOW SIDE 1
5V ref
ME221-C1-12 LOW SIDE 2
ME221-C1-42 LOW SIDE RELAY 12
ME221-C1-74 LOW SIDE 3
ME221-C1-16 LSU HEATER -VE
ME221-C1-44 LOW SIDE 4
ME221-C1-6 DIG_IN 1
ME221-C1-7 DIG_IN 2
GND
OEM-X1
Stock ECU being replaced
11HO2S low reference, bank 1 sensor 2
17High speed cooling fan relay
19Ignition 1 voltage (key hot)
23APP sensor low reference
29Accelerator pedal position (APP) sensor 1 signal
30APP sensor low reference
335V reference (fuel tank pressure)
345V reference (A/C pressure)
365V reference (APP sensor)
37Intake air temperature (IAT) signal
38Intake air temperature (IAT) low reference
41Mass air flow (MAF) signal
47Ignition 1 voltage (key hot)
48Tachometer output
49HO2S low reference, bank 2 sensor 2
50Fuel pump relay control (primary)
51Fuel pump relay control (secondary)
52Starter enable relay control
565V reference (APP sensor)
58Low speed cooling fan relay
59Powertrain relay coil control (main relay)
63A/C compressor clutch relay
64HO2S heater low control, bank 2 sensor 2
65HO2S heater low control, bank 1 sensor 2
71VSS high signal (manual trans)
72VSS low signal (manual trans)
73Power ground
5V ref
5V ref
ME221-C1-68 Stepper 2 / A2
ME221-C1-67 Stepper 1 / A1
ME221-C1-70 Stepper 3 / B1
ME221-C1-69 LOW SIDE 5
ME221-C1-39 LOW SIDE 6
ME221-C1-71 Stepper 4 / B2
ME221-C1-3 INJECTOR 4
ME221-C1-63 INJECTOR 1
ME221-C1-4 INJECTOR 2
ME221-C1-63 INJECTOR 1
ME221-C1-86 ANA TEMP 1
0V sensor
ME221-C1-53 KNOCK 1 SIGNAL
0V sensor
0V sensor
ME221-C1-4 INJECTOR 2
ME221-C1-33 INJECTOR 3
ME221-C1-3 INJECTOR 4
ME221-C1-33 INJECTOR 3
5V ref
5V ref
5V ref
0V sensor
0V sensor
0V sensor
ME221-C1-56 ANA VOLT 2
0V sensor
ME221-C1-22 CAM A VR+
ME221-C1-18 ANA VOLT 4
0V sensor
ME221-C1-81 CRANK VR+
0V sensor
ME221-C1-32 COIL 1
ME221-C1-31 COIL 2
ME221-C1-1 COIL 4
ME221-C1-2 COIL 3
GND
GND
OEM-X2
Stock ECU being replaced
25V reference (crankshaft sensor)
35V reference (throttle body)
5Throttle actuator motor control 2
6Throttle actuator motor control 1
10Cylinder shutoff solenoid 1 (AFM)
12HO2S heater low control, bank 1 sensor 1
13HO2S heater low control, bank 2 sensor 1
14Cylinder shutoff solenoid 2 (AFM)
17Injector 8
18Injector 5
19Injector 6
20Injector 1
21Engine coolant temperature (ECT) signal
22ECT low reference
26Knock sensor 1 signal A
34Oil pressure low reference
35Throttle body low reference
37Injector 2
38Injector 3
39Injector 4
40Injector 7
415V reference (oil pressure)
435V reference (MAP)
445V reference (camshaft sensor)
52Camshaft actuator low reference
53MAP low reference
56HO2S low reference, bank 1 sensor 1
58Manifold absolute pressure (MAP) signal
60HO2S low reference, bank 2 sensor 1
64Camshaft position signal (4x)
65Throttle position sensor 1 signal
66Camshaft position low reference
68Crankshaft position signal (58x)
69Crankshaft position low reference
70Ignition coil 1 control
73Ignition coil 2 control
76Ignition coil 4 control
77Ignition coil 3 control
78Coil low reference (odd bank)
79Coil low reference (even bank)
ME221
ME221-C1
ME221
1COIL 4
2COIL 3
3INJECTOR 4
4INJECTOR 2
6DIG_IN 1
7DIG_IN 2
10GROUND CHASSIS
12LOW SIDE 2
15IGN +12V
16LSU HEATER -VE
17ANA VOLT 3
18ANA VOLT 4
22CAM A VR+
26ANA VOLT 1
31COIL 2
32COIL 1
33INJECTOR 3
37LOW SIDE RELAY 11
39LOW SIDE 6
42LOW SIDE RELAY 12
43LOW SIDE RELAY 14
44LOW SIDE 4
455V REF
52SENSORS GROUND
53KNOCK 1 SIGNAL
56ANA VOLT 2
57ANA TEMP 2
61GROUND
63INJECTOR 1
64VBAT
67Stepper 1 / A1
68Stepper 2 / A2
69LOW SIDE 5
70Stepper 3 / B1
71Stepper 4 / B2
72LOW SIDE RELAY 13
73LOW SIDE 1
74LOW SIDE 3
79TACHOMETER
81CRANK VR+
84Sensor Ground
86ANA TEMP 1
89GROUND
90GROUND
OEM-X2-76 Ignition coil 4 control
OEM-X2-77 Ignition coil 3 control
Injector 4 · 2 pins
Injector 6 · 2 pins
OEM-X1-71 VSS high signal (manual trans)
OEM-X1-72 VSS low signal (manual trans)
GND
OEM-X1-58 Low speed cooling fan relay
IGN +12V
OEM-X1-64 HO2S heater low control, bank 2 sensor 2
OEM-X1-29 Accelerator pedal position (APP) sensor 1 signal
OEM-X2-65 Throttle position sensor 1 signal
OEM-X2-64 Camshaft position signal (4x)
OEM-X1-41 Mass air flow (MAF) signal
OEM-X2-73 Ignition coil 2 control
OEM-X2-70 Ignition coil 1 control
Injector 7 · 2 pins
OEM-X1-50 Fuel pump relay control (primary)
OEM-X2-13 HO2S heater low control, bank 2 sensor 1
OEM-X1-59 Powertrain relay coil control (main relay)
OEM-X1-51 Fuel pump relay control (secondary)
OEM-X1-65 HO2S heater low control, bank 1 sensor 2
5V ref
0V sensor
OEM-X2-26 Knock sensor 1 signal A
OEM-X2-58 Manifold absolute pressure (MAP) signal
OEM-X1-37 Intake air temperature (IAT) signal
GND
Injector 1 · 2 pins
VBAT
OEM-X2-6 Throttle actuator motor control 1
OEM-X2-5 Throttle actuator motor control 2
OEM-X2-12 HO2S heater low control, bank 1 sensor 1
OEM-X2-10 Cylinder shutoff solenoid 1 (AFM)
OEM-X2-14 Cylinder shutoff solenoid 2 (AFM)
OEM-X1-17 High speed cooling fan relay
OEM-X1-52 Starter enable relay control
OEM-X1-63 A/C compressor clutch relay
OEM-X1-48 Tachometer output
OEM-X2-68 Crankshaft position signal (58x)
0V sensor
OEM-X2-21 Engine coolant temperature (ECT) signal
GND
GND
SP-14V · 5 pins
SP-5V1 · 11 pins
SP-0V · 17 pins
SP-GND · 8 pins
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Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.