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-C2-3 Analogue 10
T4-C2-10 Analogue 1
T4-C2-7 Thermistor 1
T4-C2-5 Analogue 3
T4-C2-17 Thermistor 3
T4-C3-17 Analogue 7
5V ref
EFI main relay (B+)
EFI main relay (B1+)
T4-C2-34 Analogue 9
T4-C2-25 Thermistor 2
T4-C2-1 Analogue 2
0V sensor
T4-C2-15 Digital 5
T4-C3-18 Analogue 8
GND
OEM-A
Stock ECU being replaced
2Starter signal (STA)
4Throttle position (VTA1)
5Coolant temperature (THW)
6O2 left front (OXL1)
7EGR temperature sensor
9Diagnostic test 1 (TE1)
11Sensor supply +5V (VC)
12EFI main relay (B+)
13EFI main relay (B1+)
14Neutral start switch (NSW)
16Intake air temperature (THA)
17O2 right front (OXR1)
18Sensor ground (E2)
19Vehicle speed (SPD)
20Diagnostic test 2 (TE2)
22Power ground (E1)
T4-C1-5 PWM 1
T4-C1-4 PWM 2
T4-C1-3 PWM 3
T4-C2-6 Analogue 4
T4-C2-16 Analogue 11
T4-C2-19 Analogue 6
Battery constant (BATT)
OEM-B
Stock ECU being replaced
4EFI main relay control (MREL)
6Fuel pump relay (FPR)
7A/C clutch relay (ACMG)
11O2 right rear (OXR2)
19Stop light switch (BK)
24O2 left rear (OXL2)
26Battery constant (BATT)
T4-C2-4 Digital 1
T4-C1-10 Coil 1
T4-C2-2 Wheel 1
T4-C2-22 Cam 1
T4-C2-12 Crank
T4-C2-14 Digital 4
T4-C1-18 Coil 2
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
2Igniter 1 feedback (IGF1)
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-)
T4-C3-10 PWM 8
T4-C3-25 PWM 7
T4-C3-24 PWM 6
T4-C1-17 Injector 2
T4-C1-9 Injector 1
GND
T4-C3-23 PWM 5
T4-C3-9 Lambda 1 Heater Negative
T4-C3-22 PWM 4
T4-C1-34 Injector 3
T4-C1-25 Injector 4
GND
OEM-D
Stock ECU being replaced
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)
T4
T4-C1
T4
3PWM 3
4PWM 2
5PWM 1
9Injector 1
10Coil 1
13Power Ground 1
14Power Ground 2
17Injector 2
18Coil 2
25Injector 4
31Ignition 12v In
34Injector 3
OEM-B-7 A/C clutch relay (ACMG)
OEM-B-6 Fuel pump relay (FPR)
OEM-B-4 EFI main relay control (MREL)
OEM-D-12 Injector 1&7 (#10)
OEM-C-5 Ignition 1 (IGT1)
GND
GND
OEM-D-11 Injector 2&8 (#20)
OEM-C-13 Ignition 2 (IGT2)
OEM-D-25 Injector 4&6 (#30)
Ignition 12v In
OEM-D-24 Injector 3&5 (#40)
T4-C2
T4
1Analogue 2
2Wheel 1
3Analogue 10
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
10Analogue 1
12Crank
14Digital 4
15Digital 5
16Analogue 11
17Thermistor 3
19Analogue 6
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
34Analogue 9
OEM-A-17 O2 right front (OXR1)
OEM-C-6 Cam sensor 2 + (G2+)
OEM-A-2 Starter signal (STA)
OEM-C-2 Igniter 1 feedback (IGF1)
OEM-A-6 O2 left front (OXL1)
OEM-B-11 O2 right rear (OXR2)
OEM-A-5 Coolant temperature (THW)
OEM-A-4 Throttle position (VTA1)
OEM-C-8 Crank sensor + (NE+)
OEM-C-10 Igniter 2 feedback (IGF2)
OEM-A-19 Vehicle speed (SPD)
OEM-B-19 Stop light switch (BK)
OEM-A-7 EGR temperature sensor
OEM-B-24 O2 left rear (OXL2)
0V sensor
OEM-C-7 Cam sensor 1 + (G1+)
5V ref
OEM-A-16 Intake air temperature (THA)
0V sensor
OEM-A-14 Neutral start switch (NSW)
T4-C3
T4
9Lambda 1 Heater Negative
10PWM 8
17Analogue 7
18Analogue 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
OEM-D-19 O2 heater 2 (HT2)
OEM-D-6 ISC stepper coil 3 (ISC3)
OEM-A-9 Diagnostic test 1 (TE1)
OEM-A-20 Diagnostic test 2 (TE2)
OEM-D-20 O2 heater 1 (HT1)
OEM-D-17 Cold start injector 1 (STJ1)
OEM-D-8 ISC stepper coil 1 (ISC1)
OEM-D-7 ISC stepper coil 2 (ISC2)
Permanent 12v
SP-14V · 4 pins
SP-GND · 6 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.