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
T4-C1-9 Injector 1
T4-C1-17 Injector 2
T4-C1-34 Injector 3
T4-C1-5 PWM 1
T4-C3-23 PWM 5
T4-C3-10 PWM 8
T4-C3-9 Lambda 1 Heater Negative
T4-C1-10 Coil 1
GND
ECM power source (IGP1)
T4-C1-25 Injector 4
T4-C1-9 Injector 1
T4-C1-17 Injector 2
T4-C3-24 PWM 6
T4-C3-25 PWM 7
T4-C1-18 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)
22Front primary O2 heater (FPO2SHTC)
23Rear primary O2 heater (RPO2SHTC)
24Ignition coil 2 (IGN COIL2)
25Power ground (PG2)
26Logic ground (LG1)
T4-C2-16 Analogue 11
T4-C2-22 Cam 1
T4-C2-2 Wheel 1
T4-C2-12 Crank
0V sensor
T4-C1-26 Coil 4
T4-C1-1 Coil 3
0V sensor
0V sensor
0V sensor
0V sensor
OEM-B
Stock ECU being replaced
1VTEC pressure switch front (VTP SWF)
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)
T4-C2-4 Digital 1
OEM-C
Stock ECU being replaced
1ECM power source (IGP2)
7Vehicle speed sensor (VSS)
Backup power (VBU)
T4-C2-7 Thermistor 1
T4-C2-25 Thermistor 2
T4-C2-10 Analogue 1
5V ref
0V sensor
T4-C2-6 Analogue 4
T4-C2-19 Analogue 6
T4-C3-17 Analogue 7
T4-C3-18 Analogue 8
T4-C2-34 Analogue 9
T4-C2-3 Analogue 10
OEM-D
Stock ECU being replaced
1Backup power (VBU)
7Engine coolant temperature (ECT)
8Intake air temperature (IAT)
9MAP sensor
10Sensor 5V supply (VCC2)
11Sensor ground (SG2)
12Throttle position sensor (TPS)
16Front secondary O2 signal (O2S FS)
17Rear secondary O2 signal (O2S RS)
18Front primary O2 signal (O2S FP)
19Rear primary O2 signal (O2S RP)
20EGR valve lift sensor (EGRL)
5V ref
0V sensor
T4-C3-22 PWM 4
T4-C2-15 Digital 5
T4-C2-5 Analogue 3
T4-C2-1 Analogue 2
5V ref
0V sensor
T4-C2-14 Digital 4
T4-C1-4 PWM 2
T4-C1-3 PWM 3
OEM-F
Stock ECU being replaced
1Sensor 5V supply (VCC1)
2Sensor ground (SG1)
4Fuel pump relay 2 (FLR2)
6Brake switch 2 (BKSW2)
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)
T4
T4-C1
T4
1Coil 3
3PWM 3
4PWM 2
5PWM 1
9Injector 1
10Coil 1
13Power Ground 1
14Power Ground 2
17Injector 2
18Coil 2
25Injector 4
26Coil 4
31Ignition 12v In
34Injector 3
OEM-B-12 Ignition coil 3 (IGN COIL3)
OEM-F-20 VTEC solenoid rear (VT SOLR)
OEM-F-19 VTEC solenoid front (VT SOLF)
OEM-A-5 Fuel pump relay (FLR1)
Injector 1 · 2 pins
OEM-A-11 Ignition coil 1 (IGN COIL1)
GND
GND
Injector 6 (INJ6) · 2 pins
OEM-A-24 Ignition coil 2 (IGN COIL2)
OEM-A-14 Injector 4 (INJ4)
OEM-B-11 Ignition coil 4 (IGN COIL4)
Ignition 12v In
OEM-A-3 Injector 3 (INJ3)
T4-C2
T4
1Analogue 2
2Wheel 1
3Analogue 10
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
95v Output
10Analogue 1
12Crank
14Digital 4
15Digital 5
16Analogue 11
19Analogue 6
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
34Analogue 9
OEM-F-13 Accelerator pedal position 1 (AP1)
OEM-B-7 Crank position sensor 2 + (CKP 2P)
OEM-D-20 EGR valve lift sensor (EGRL)
OEM-C-7 Vehicle speed sensor (VSS)
OEM-F-12 Accelerator pedal position 2 (AP2)
OEM-D-12 Throttle position sensor (TPS)
OEM-D-7 Engine coolant temperature (ECT)
5V ref
OEM-D-9 MAP sensor
OEM-B-8 Crank position sensor 1 + (CKP 1P)
OEM-F-16 Brake switch 1 (BKSW1)
OEM-F-6 Brake switch 2 (BKSW2)
OEM-B-1 VTEC pressure switch front (VTP SWF)
OEM-D-16 Front secondary O2 signal (O2S FS)
0V sensor
OEM-B-6 Cylinder position sensor 1 + (CYP 1P)
5V ref
OEM-D-8 Intake air temperature (IAT)
0V sensor
OEM-D-19 Rear primary O2 signal (O2S RP)
T4-C3
T4
9Lambda 1 Heater Negative
10PWM 8
17Analogue 7
18Analogue 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
OEM-A-10 Rear secondary O2 heater (RSO2SHTC)
OEM-A-9 Front secondary O2 heater (FSO2SHTC)
OEM-D-17 Rear secondary O2 signal (O2S RS)
OEM-D-18 Front primary O2 signal (O2S FP)
OEM-F-4 Fuel pump relay 2 (FLR2)
OEM-A-8 A/C clutch relay (ACC)
OEM-A-22 Front primary O2 heater (FPO2SHTC)
OEM-A-23 Rear primary O2 heater (RPO2SHTC)
Permanent 12v
SP-GND · 7 pins
SP-0V · 12 pins
SP-5V1 · 4 pins
SP-14V · 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.
66 / 66 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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