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-C1-39 LOW SIDE 6
Ignition power 2 (IGP2)
Ignition power 1 (IGP1)
GND
GND
ME221-C1-50 LSU IP
ME221-C1-80 CRANK VR+
ME221-C1-53 KNOCK 1 SIGNAL
0V sensor
0V sensor
ME221-C1-56 ANA VOLT 2
ME221-C1-19 LSU UN
ME221-C1-6 DIG_IN 1
ME221-C1-26 ANA VOLT 1
5V ref
5V ref
ME221-C1-14 LSU +12V
GND
GND
ME221-C1-22 CAM A VR+
ME221-C1-23 CAM A VR-
ME221-C1-1 COIL 4
ME221-C1-2 COIL 3
ME221-C1-31 COIL 2
ME221-C1-32 COIL 1
OEM-A
Stock ECU being replaced
1A/F sensor heater control (AFSHTC)
2Ignition power 2 (IGP2)
3Ignition power 1 (IGP1)
4Power ground 2 (PG2)
5Power ground 1 (PG1)
6A/F sensor + (AFS+, wideband Ip)
7Crank position sensor (CKP)
9Knock sensor (KS)
10Sensor ground 2 (SG2)
11Sensor ground 1 (SG1)
15Throttle position sensor (TPS)
16A/F sensor - (AFS-, wideband Vs)
18Vehicle speed sensor (VSS, M/T)
19Manifold absolute pressure (MAP)
20Sensor 5V supply 2 (VCC2)
21Sensor 5V supply 1 (VCC1)
22A/F sensor heater supply (AFSHTC+)
23Logic ground 2 (LG2)
24Logic ground 1 (LG1)
25Camshaft position A (CMP A)
26Camshaft position B (CMP B)
27Ignition coil 4 (IGPLS4)
28Ignition coil 3 (IGPLS3)
29Ignition coil 2 (IGPLS2)
30Ignition coil 1 (IGPLS1)
ME221-C1-37 LOW SIDE RELAY 11
ME221-C1-3 INJECTOR 4
ME221-C1-33 INJECTOR 3
ME221-C1-4 INJECTOR 2
ME221-C1-63 INJECTOR 1
ME221-C1-12 LOW SIDE 2
ME221-C1-86 ANA TEMP 1
ME221-C1-7 DIG_IN 2
ME221-C1-18 ANA VOLT 4
ME221-C1-57 ANA TEMP 2
ME221-C1-42 LOW SIDE RELAY 12
ME221-C1-72 LOW SIDE RELAY 13
ME221-C1-43 LOW SIDE RELAY 14
OEM-B
Stock ECU being replaced
1VTC oil control solenoid (+)
2Injector 4 (INJ4)
3Injector 3 (INJ3)
4Injector 2 (INJ2)
5Injector 1 (INJ1)
6Radiator fan control (FANC)
8Coolant temp sensor (ECT)
10Alternator L signal (ALTL)
13Alternator FR signal (ALTF)
17Intake air temp sensor (IAT)
18Alternator control (ALTC)
21Evap canister purge valve (PCS)
23VTC oil control solenoid (-)
ME221-C1-74 LOW SIDE 3
ME221-C1-17 ANA VOLT 3
GND
0V sensor
5V ref
ME221-C1-16 LSU HEATER -VE
ME221-C1-73 LOW SIDE 1
ME221-C1-69 LOW SIDE 5
ME221-C1-44 LOW SIDE 4
ME221-C1-79 TACHOMETER
OEM-E
Stock ECU being replaced
1Immobilizer fuel pump relay (IMO FPR)
2Secondary heated O2 sensor (SHO2S)
3Logic ground 3 (LG3)
4Sensor ground 3 (SG3)
5Sensor 5V supply 3 (VCC3)
6Secondary O2 heater control (SO2SHTC)
7Main relay control (MRLY)
8A/F sensor heater relay control (AFSHTCR)
18A/C clutch relay (ACC)
26Engine speed pulse / tacho (NEP)
ME221
ME221-C1
ME221
1COIL 4
2COIL 3
3INJECTOR 4
4INJECTOR 2
6DIG_IN 1
7DIG_IN 2
10GROUND CHASSIS
12LOW SIDE 2
14LSU +12V
15IGN +12V
16LSU HEATER -VE
17ANA VOLT 3
18ANA VOLT 4
19LSU UN
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
50LSU IP
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+
84Sensor Ground
86ANA TEMP 1
89GROUND
90GROUND
OEM-A-27 Ignition coil 4 (IGPLS4)
OEM-A-28 Ignition coil 3 (IGPLS3)
OEM-B-2 Injector 4 (INJ4)
OEM-B-4 Injector 2 (INJ2)
OEM-A-18 Vehicle speed sensor (VSS, M/T)
OEM-B-10 Alternator L signal (ALTL)
GND
OEM-B-6 Radiator fan control (FANC)
OEM-A-22 A/F sensor heater supply (AFSHTC+)
IGN +12V
OEM-E-6 Secondary O2 heater control (SO2SHTC)
OEM-E-2 Secondary heated O2 sensor (SHO2S)
OEM-B-13 Alternator FR signal (ALTF)
OEM-A-16 A/F sensor - (AFS-, wideband Vs)
OEM-A-25 Camshaft position A (CMP A)
OEM-A-26 Camshaft position B (CMP B)
OEM-A-19 Manifold absolute pressure (MAP)
OEM-A-29 Ignition coil 2 (IGPLS2)
OEM-A-30 Ignition coil 1 (IGPLS1)
OEM-B-3 Injector 3 (INJ3)
OEM-B-1 VTC oil control solenoid (+)
OEM-A-1 A/F sensor heater control (AFSHTC)
OEM-B-18 Alternator control (ALTC)
OEM-B-23 VTC oil control solenoid (-)
OEM-E-18 A/C clutch relay (ACC)
5V ref
5V ref
OEM-A-6 A/F sensor + (AFS+, wideband Ip)
0V sensor
OEM-A-9 Knock sensor (KS)
OEM-A-15 Throttle position sensor (TPS)
OEM-B-17 Intake air temp sensor (IAT)
GND
OEM-B-5 Injector 1 (INJ1)
VBAT
OEM-E-8 A/F sensor heater relay control (AFSHTCR)
OEM-B-21 Evap canister purge valve (PCS)
OEM-E-7 Main relay control (MRLY)
OEM-E-1 Immobilizer fuel pump relay (IMO FPR)
5V ref
OEM-E-26 Engine speed pulse / tacho (NEP)
OEM-A-7 Crank position sensor (CKP)
0V sensor
OEM-B-8 Coolant temp sensor (ECT)
GND
GND
SP-14V · 5 pins
SP-GND · 10 pins
SP-0V · 6 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.
56 / 56 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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