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-C3-24 PWM 6
Ignition power 2 (IGP2)
Ignition power 1 (IGP1)
GND
GND
T4-C3-7 Lambda 1 Pump Current
T4-C2-12 Crank
0V sensor
0V sensor
T4-C3-25 PWM 7
T4-C2-1 Analogue 2
T4-C3-12 Lambda 1 Nernst Voltage
T4-C2-4 Digital 1
T4-C2-10 Analogue 1
5V ref
5V ref
GND
GND
T4-C2-22 Cam 1
T4-C2-2 Wheel 1
T4-C1-26 Coil 4
T4-C1-1 Coil 3
T4-C1-18 Coil 2
T4-C1-10 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)
10Sensor ground 2 (SG2)
11Sensor ground 1 (SG1)
12Idle air control valve (IACV)
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)
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)
T4-C1-6 Motor 1 +
T4-C1-25 Injector 4
T4-C1-34 Injector 3
T4-C1-17 Injector 2
T4-C1-9 Injector 1
T4-C1-4 PWM 2
T4-C2-7 Thermistor 1
T4-C2-15 Digital 5
T4-C2-14 Digital 4
T4-C2-6 Analogue 4
T4-C3-10 PWM 8
T4-C2-25 Thermistor 2
T4-C1-7 Motor 1 -
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)
9VTEC oil pressure switch (VTPSW)
10Alternator L signal (ALTL)
13Alternator FR signal (ALTF)
15VTEC solenoid (VTS)
17Intake air temp sensor (IAT)
18Alternator control (ALTC)
T4-C1-3 PWM 3
T4-C2-5 Analogue 3
GND
0V sensor
5V ref
T4-C3-9 Lambda 1 Heater Negative
T4-C1-5 PWM 1
T4-C3-23 PWM 5
T4-C2-19 Analogue 6
T4-C3-17 Analogue 7
T4-C3-18 Analogue 8
T4-C3-22 PWM 4
T4-C2-34 Analogue 9
T4-C2-3 Analogue 10
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)
14Fuel tank pressure sensor (FTP)
15Electrical load detector (ELD)
16Power steering pressure switch (PSPSW)
18A/C clutch relay (ACC)
20Brake switch / interlock (2WBS)
22Brake switch (BKSW)
T4
T4-C1
T4
1Coil 3
3PWM 3
4PWM 2
5PWM 1
6Motor 1 +
7Motor 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-A-28 Ignition coil 3 (IGPLS3)
OEM-E-1 Immobilizer fuel pump relay (IMO FPR)
OEM-B-6 Radiator fan control (FANC)
OEM-E-7 Main relay control (MRLY)
OEM-B-1 VTC oil control solenoid (+)
OEM-B-18 Alternator control (ALTC)
OEM-B-5 Injector 1 (INJ1)
OEM-A-30 Ignition coil 1 (IGPLS1)
GND
GND
OEM-B-4 Injector 2 (INJ2)
OEM-A-29 Ignition coil 2 (IGPLS2)
OEM-B-2 Injector 4 (INJ4)
OEM-A-27 Ignition coil 4 (IGPLS4)
Ignition 12v In
OEM-B-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
19Analogue 6
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
34Analogue 9
OEM-A-15 Throttle position sensor (TPS)
OEM-A-26 Camshaft position B (CMP B)
OEM-E-22 Brake switch (BKSW)
OEM-A-18 Vehicle speed sensor (VSS, M/T)
OEM-E-2 Secondary heated O2 sensor (SHO2S)
OEM-B-13 Alternator FR signal (ALTF)
OEM-B-8 Coolant temp sensor (ECT)
5V ref
OEM-A-19 Manifold absolute pressure (MAP)
OEM-A-7 Crank position sensor (CKP)
OEM-B-10 Alternator L signal (ALTL)
OEM-B-9 VTEC oil pressure switch (VTPSW)
OEM-E-14 Fuel tank pressure sensor (FTP)
0V sensor
OEM-A-25 Camshaft position A (CMP A)
5V ref
OEM-B-17 Intake air temp sensor (IAT)
0V sensor
OEM-E-20 Brake switch / interlock (2WBS)
T4-C3
T4
7Lambda 1 Pump Current
9Lambda 1 Heater Negative
10PWM 8
12Lambda 1 Nernst Voltage
17Analogue 7
18Analogue 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
OEM-A-6 A/F sensor + (AFS+, wideband Ip)
OEM-E-6 Secondary O2 heater control (SO2SHTC)
OEM-B-15 VTEC solenoid (VTS)
OEM-A-16 A/F sensor - (AFS-, wideband Vs)
OEM-E-15 Electrical load detector (ELD)
OEM-E-16 Power steering pressure switch (PSPSW)
OEM-E-18 A/C clutch relay (ACC)
OEM-E-8 A/F sensor heater relay control (AFSHTCR)
OEM-A-1 A/F sensor heater control (AFSHTC)
OEM-A-12 Idle air control valve (IACV)
SP-14V · 4 pins
SP-GND · 8 pins
SP-0V · 6 pins
SP-5V1 · 4 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.
57 / 57 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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