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
ME221-C1-63 INJECTOR 1
ME221-C1-4 INJECTOR 2
ME221-C1-33 INJECTOR 3
ME221-C1-73 LOW SIDE 1
ME221-C1-69 LOW SIDE 5
ME221-C1-42 LOW SIDE RELAY 12
ME221-C1-16 LSU HEATER -VE
ME221-C1-32 COIL 1
GND
ECM power source (IGP1)
ME221-C1-3 INJECTOR 4
ME221-C1-63 INJECTOR 1
ME221-C1-4 INJECTOR 2
ME221-C1-72 LOW SIDE RELAY 13
ME221-C1-43 LOW SIDE RELAY 14
ME221-C1-39 LOW SIDE 6
ME221-C1-37 LOW SIDE RELAY 11
ME221-C1-31 COIL 2
GND
0V sensor
OEM-A
Stock ECU being replaced
1Injector 1 (INJ1)
2Injector 2 (INJ2)
3Injector 3 (INJ3)
5Fuel pump relay (FLR1)
8A/C clutch relay (ACC)
9Front secondary O2 heater (FSO2SHTC)
10Rear secondary O2 heater (RSO2SHTC)
11Ignition coil 1 (IGN COIL1)
12Power ground (PG1)
13ECM power source (IGP1)
14Injector 4 (INJ4)
15Injector 5 (INJ5)
16Injector 6 (INJ6)
17EVAP bypass solenoid (2WBS)
20IAB control solenoid (IABCS)
22Front primary O2 heater (FPO2SHTC)
23Rear primary O2 heater (RPO2SHTC)
24Ignition coil 2 (IGN COIL2)
25Power ground (PG2)
26Logic ground (LG1)
ME221-C1-23 CAM A VR-
ME221-C1-22 CAM A VR+
ME221-C1-81 CRANK VR-
ME221-C1-80 CRANK VR+
0V sensor
ME221-C1-1 COIL 4
ME221-C1-2 COIL 3
0V sensor
0V sensor
0V sensor
0V sensor
OEM-B
Stock ECU being replaced
5Cylinder position sensor 2 + (CYP 2P)
6Cylinder position sensor 1 + (CYP 1P)
7Crank position sensor 2 + (CKP 2P)
8Crank position sensor 1 + (CKP 1P)
9Logic ground (LG2)
11Ignition coil 4 (IGN COIL4)
12Ignition coil 3 (IGN COIL3)
13Cylinder position sensor 2 return (CYP 2M)
14Cylinder position sensor 1 return (CYP 1M)
15Crank position sensor 2 return (CKP 2M)
16Crank position sensor 1 return (CKP 1M)
ECM power source (IGP2)
ME221-C1-6 DIG_IN 1
ME221-C1-79 TACHOMETER
OEM-C
Stock ECU being replaced
1ECM power source (IGP2)
7Vehicle speed sensor (VSS)
8Engine speed pulse (NEP)
ME221-C1-86 ANA TEMP 1
ME221-C1-57 ANA TEMP 2
ME221-C1-26 ANA VOLT 1
5V ref
0V sensor
ME221-C1-18 ANA VOLT 4
ME221-C1-53 KNOCK 1 SIGNAL
OEM-D
Stock ECU being replaced
7Engine coolant temperature (ECT)
8Intake air temperature (IAT)
9MAP sensor
10Sensor 5V supply (VCC2)
11Sensor ground (SG2)
12Throttle position sensor (TPS)
13Knock sensor front (KSF)
5V ref
0V sensor
ME221-C1-44 LOW SIDE 4
ME221-C1-17 ANA VOLT 3
ME221-C1-56 ANA VOLT 2
5V ref
0V sensor
ME221-C1-7 DIG_IN 2
ME221-C1-12 LOW SIDE 2
ME221-C1-74 LOW SIDE 3
OEM-F
Stock ECU being replaced
1Sensor 5V supply (VCC1)
2Sensor ground (SG1)
4Fuel pump relay 2 (FLR2)
12Accelerator pedal position 2 (AP2)
13Accelerator pedal position 1 (AP1)
14Accelerator pedal 5V supply (VCC3)
15Accelerator pedal ground (SG3)
16Brake switch 1 (BKSW1)
19VTEC solenoid front (VT SOLF)
20VTEC solenoid rear (VT SOLR)
Throttle motor power source 1 (IGM1)
Throttle motor power source 2 (IGM2)
GND
GND
Throttle motor common power phases 1&3 (COM1)
Throttle motor common power phases 2&4 (COM2)
OEM-G
Stock ECU being replaced
2Throttle motor power source 1 (IGM1)
3Throttle motor power source 2 (IGM2)
7Throttle motor ground 1 (PGM1)
8Throttle motor ground 2 (PGM2)
9Throttle motor common power phases 1&3 (COM1)
10Throttle motor common power phases 2&4 (COM2)
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+
23CAM 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
465V REF
52SENSORS GROUND
53KNOCK 1 SIGNAL
56ANA VOLT 2
57ANA TEMP 2
61GROUND
63INJECTOR 1
64VBAT
69LOW SIDE 5
72LOW SIDE RELAY 13
73LOW SIDE 1
74LOW SIDE 3
765V REF
79TACHOMETER
80CRANK VR+
81CRANK VR-
84Sensor Ground
86ANA TEMP 1
89GROUND
90GROUND
OEM-B-11 Ignition coil 4 (IGN COIL4)
OEM-B-12 Ignition coil 3 (IGN COIL3)
OEM-A-14 Injector 4 (INJ4)
Injector 2 (INJ2) · 2 pins
OEM-C-7 Vehicle speed sensor (VSS)
OEM-F-16 Brake switch 1 (BKSW1)
GND
OEM-F-19 VTEC solenoid front (VT SOLF)
IGN +12V
OEM-A-10 Rear secondary O2 heater (RSO2SHTC)
OEM-F-12 Accelerator pedal position 2 (AP2)
OEM-D-12 Throttle position sensor (TPS)
OEM-B-6 Cylinder position sensor 1 + (CYP 1P)
OEM-B-5 Cylinder position sensor 2 + (CYP 2P)
OEM-D-9 MAP sensor
OEM-A-24 Ignition coil 2 (IGN COIL2)
OEM-A-11 Ignition coil 1 (IGN COIL1)
OEM-A-3 Injector 3 (INJ3)
OEM-A-23 Rear primary O2 heater (RPO2SHTC)
OEM-A-22 Front primary O2 heater (FPO2SHTC)
OEM-A-9 Front secondary O2 heater (FSO2SHTC)
OEM-A-20 IAB control solenoid (IABCS)
OEM-F-4 Fuel pump relay 2 (FLR2)
5V ref
5V ref
0V sensor
OEM-D-13 Knock sensor front (KSF)
OEM-F-13 Accelerator pedal position 1 (AP1)
OEM-D-8 Intake air temperature (IAT)
GND
Injector 1 (INJ1) · 2 pins
VBAT
OEM-A-8 A/C clutch relay (ACC)
OEM-A-17 EVAP bypass solenoid (2WBS)
OEM-A-5 Fuel pump relay (FLR1)
OEM-F-20 VTEC solenoid rear (VT SOLR)
5V ref
OEM-C-8 Engine speed pulse (NEP)
OEM-B-8 Crank position sensor 1 + (CKP 1P)
OEM-B-7 Crank position sensor 2 + (CKP 2P)
0V sensor
OEM-D-7 Engine coolant temperature (ECT)
GND
GND
SP-GND · 9 pins
SP-0V · 12 pins
SP-14V · 9 pins
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
65 / 65 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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