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-C1-26 ANA VOLT 1
ME221-C1-86 ANA TEMP 1
ME221-C1-17 ANA VOLT 3
5V ref
EFI main relay (B+)
EFI main relay (B1+)
ME221-C1-57 ANA TEMP 2
ME221-C1-56 ANA VOLT 2
0V sensor
GND
OEM-A
Stock ECU being replaced
4Throttle position (VTA1)
5Coolant temperature (THW)
6O2 left front (OXL1)
11Sensor supply +5V (VC)
12EFI main relay (B+)
13EFI main relay (B1+)
16Intake air temperature (THA)
17O2 right front (OXR1)
18Sensor ground (E2)
22Power ground (E1)
ME221-C1-73 LOW SIDE 1
ME221-C1-43 LOW SIDE RELAY 14
ME221-C1-12 LOW SIDE 2
ME221-C1-74 LOW SIDE 3
ME221-C1-18 ANA VOLT 4
OEM-B
Stock ECU being replaced
4EFI main relay control (MREL)
5Check-engine lamp (W)
6Fuel pump relay (FPR)
7A/C clutch relay (ACMG)
11O2 right rear (OXR2)
ME221-C1-6 DIG_IN 1
ME221-C1-53 KNOCK 1 SIGNAL
ME221-C1-32 COIL 1
ME221-C1-23 CAM A VR-
ME221-C1-22 CAM A VR+
ME221-C1-80 CRANK VR+
ME221-C1-7 DIG_IN 2
ME221-C1-31 COIL 2
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
2Igniter 1 feedback (IGF1)
3Knock sensor 1 (KNK1)
5Ignition 1 (IGT1)
6Cam sensor 2 + (G2+)
7Cam sensor 1 + (G1+)
8Crank sensor + (NE+)
10Igniter 2 feedback (IGF2)
13Ignition 2 (IGT2)
15Cam sensor ground (G-)
16Crank sensor - (NE-)
ME221-C1-72 LOW SIDE RELAY 13
ME221-C1-42 LOW SIDE RELAY 12
ME221-C1-37 LOW SIDE RELAY 11
ME221-C1-39 LOW SIDE 6
ME221-C1-4 INJECTOR 2
ME221-C1-63 INJECTOR 1
GND
ME221-C1-69 LOW SIDE 5
ME221-C1-16 LSU HEATER -VE
ME221-C1-44 LOW SIDE 4
ME221-C1-33 INJECTOR 3
ME221-C1-3 INJECTOR 4
GND
OEM-D
Stock ECU being replaced
5ISC stepper coil 4 (ISC4)
6ISC stepper coil 3 (ISC3)
7ISC stepper coil 2 (ISC2)
8ISC stepper coil 1 (ISC1)
11Injector 2&8 (#20)
12Injector 1&7 (#10)
13Power ground (E01)
17Cold start injector 1 (STJ1)
19O2 heater 2 (HT2)
20O2 heater 1 (HT1)
24Injector 3&5 (#40)
25Injector 4&6 (#30)
26Power ground (E02)
ME221
ME221-C1
ME221
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
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
80CRANK VR+
84Sensor Ground
86ANA TEMP 1
89GROUND
90GROUND
OEM-D-25 Injector 4&6 (#30)
OEM-D-11 Injector 2&8 (#20)
OEM-C-2 Igniter 1 feedback (IGF1)
OEM-C-10 Igniter 2 feedback (IGF2)
GND
OEM-B-6 Fuel pump relay (FPR)
IGN +12V
OEM-D-19 O2 heater 2 (HT2)
OEM-A-6 O2 left front (OXL1)
OEM-B-11 O2 right rear (OXR2)
OEM-C-7 Cam sensor 1 + (G1+)
OEM-C-6 Cam sensor 2 + (G2+)
OEM-A-4 Throttle position (VTA1)
OEM-C-13 Ignition 2 (IGT2)
OEM-C-5 Ignition 1 (IGT1)
OEM-D-24 Injector 3&5 (#40)
OEM-D-7 ISC stepper coil 2 (ISC2)
OEM-D-8 ISC stepper coil 1 (ISC1)
OEM-D-6 ISC stepper coil 3 (ISC3)
OEM-B-5 Check-engine lamp (W)
OEM-D-20 O2 heater 1 (HT1)
5V ref
0V sensor
OEM-C-3 Knock sensor 1 (KNK1)
OEM-A-17 O2 right front (OXR1)
OEM-A-16 Intake air temperature (THA)
GND
OEM-D-12 Injector 1&7 (#10)
VBAT
OEM-D-17 Cold start injector 1 (STJ1)
OEM-D-5 ISC stepper coil 4 (ISC4)
OEM-B-4 EFI main relay control (MREL)
OEM-B-7 A/C clutch relay (ACMG)
OEM-C-8 Crank sensor + (NE+)
0V sensor
OEM-A-5 Coolant temperature (THW)
GND
GND
SP-14V · 5 pins
SP-0V · 6 pins
SP-GND · 8 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.
46 / 46 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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