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
Ignition power 2 (IGP2)
Ignition power 1 (IGP1)
GND
GND
T4-C2-2 Wheel 1
T4-C2-12 Crank
GND
GND
T4-C3-24 PWM 6
T4-C3-25 PWM 7
T4-C1-26 Coil 4
T4-C1-1 Coil 3
T4-C1-18 Coil 2
T4-C1-10 Coil 1
T4-C2-4 Digital 1
T4-C2-22 Cam 1
5V ref
5V ref
0V sensor
0V sensor
T4-C3-12 Lambda 1 Nernst Voltage
T4-C2-1 Analogue 2
T4-C2-10 Analogue 1
T4-C3-7 Lambda 1 Pump Current
OEM-A
Stock ECU being replaced
2Ignition power 2 (IGP2)
3Ignition power 1 (IGP1)
4Power ground 2 (PG2)
5Power ground 1 (PG1)
6Camshaft position B (CMP B)
7Crank position sensor (CKP)
8Logic ground 2 (LG2)
9Logic ground 1 (LG1)
10A/F sensor heater control (AFSHTC)
12Idle air control valve (IACV)
13Ignition coil 4 (IGPLS4)
14Ignition coil 3 (IGPLS3)
15Ignition coil 2 (IGPLS2)
16Ignition coil 1 (IGPLS1)
18Neutral position switch (NC)
19Camshaft position A (CMP A)
20Sensor 5V supply 2 (VCC2)
21Sensor 5V supply 1 (VCC1)
23Sensor ground 2 (SG2)
24Sensor ground 1 (SG1)
28A/F sensor - (AFS-, wideband Vs)
29Throttle position sensor (TPS)
30Manifold absolute pressure (MAP)
31A/F sensor + (AFS+, wideband Ip)
T4-C1-25 Injector 4
T4-C1-34 Injector 3
T4-C1-17 Injector 2
T4-C1-9 Injector 1
T4-C3-10 PWM 8
T4-C2-7 Thermistor 1
T4-C2-14 Digital 4
T4-C2-15 Digital 5
T4-C2-6 Analogue 4
T4-C2-25 Thermistor 2
OEM-B
Stock ECU being replaced
2Injector 4 (INJ4)
3Injector 3 (INJ3)
4Injector 2 (INJ2)
5Injector 1 (INJ1)
6VTEC solenoid (VTS)
8Coolant temp sensor (ECT)
10Alternator L signal (ALTL)
11VTEC oil pressure switch (VTPSW)
13Alternator FR signal (ALTF)
17Intake air temp sensor (IAT)
GND
0V sensor
5V ref
T4-C1-5 PWM 1
T4-C3-23 PWM 5
T4-C1-4 PWM 2
T4-C2-19 Analogue 6
T4-C3-17 Analogue 7
T4-C3-18 Analogue 8
T4-C1-3 PWM 3
T4-C3-22 PWM 4
T4-C2-5 Analogue 3
T4-C3-9 Lambda 1 Heater Negative
T4-C2-34 Analogue 9
OEM-E
Stock ECU being replaced
4Logic ground 3 (LG3)
5Sensor ground 3 (SG3)
6Sensor 5V supply 3 (VCC3)
8Main relay control (MRLY)
9A/F sensor heater relay control (AFSHTCR)
12Radiator fan control (FANC)
14Fuel tank pressure sensor (FTP)
15Electrical load detector (ELD)
16Power steering pressure switch (PSPSW)
17Immobilizer fuel pump relay (IMO FPR)
18A/C clutch relay (ACC)
20Secondary heated O2 sensor (SHO2S)
21Secondary O2 heater control (SO2SHTC)
22Brake switch (BKSW)
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-A-14 Ignition coil 3 (IGPLS3)
OEM-E-17 Immobilizer fuel pump relay (IMO FPR)
OEM-E-12 Radiator fan control (FANC)
OEM-E-8 Main relay control (MRLY)
OEM-B-5 Injector 1 (INJ1)
OEM-A-16 Ignition coil 1 (IGPLS1)
GND
GND
OEM-B-4 Injector 2 (INJ2)
OEM-A-15 Ignition coil 2 (IGPLS2)
OEM-B-2 Injector 4 (INJ4)
OEM-A-13 Ignition coil 4 (IGPLS4)
Ignition 12v In
OEM-B-3 Injector 3 (INJ3)
T4-C2
T4
1Analogue 2
2Wheel 1
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-29 Throttle position sensor (TPS)
OEM-A-6 Camshaft position B (CMP B)
OEM-A-18 Neutral position switch (NC)
OEM-E-20 Secondary heated O2 sensor (SHO2S)
OEM-B-13 Alternator FR signal (ALTF)
OEM-B-8 Coolant temp sensor (ECT)
5V ref
OEM-A-30 Manifold absolute pressure (MAP)
OEM-A-7 Crank position sensor (CKP)
OEM-B-10 Alternator L signal (ALTL)
OEM-B-11 VTEC oil pressure switch (VTPSW)
OEM-E-14 Fuel tank pressure sensor (FTP)
0V sensor
OEM-A-19 Camshaft position A (CMP A)
5V ref
OEM-B-17 Intake air temp sensor (IAT)
0V sensor
OEM-E-22 Brake switch (BKSW)
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-31 A/F sensor + (AFS+, wideband Ip)
OEM-E-21 Secondary O2 heater control (SO2SHTC)
OEM-B-6 VTEC solenoid (VTS)
OEM-A-28 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-9 A/F sensor heater relay control (AFSHTCR)
OEM-A-10 A/F sensor heater control (AFSHTC)
OEM-A-12 Idle air control valve (IACV)
SP-14V · 4 pins
SP-GND · 8 pins
SP-5V1 · 4 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.
54 / 54 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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