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
ECU power (+B2, main relay)
Battery constant (BATT, memory)
GND
T4-C2-34 Analogue 9
T4-C2-25 Thermistor 2
T4-C2-4 Digital 1
T4-C2-14 Digital 4
T4-C2-15 Digital 5
T4-C2-28 CAN Low
T4-C2-26 CAN High
T4-C3-22 PWM 4
T4-C2-10 Analogue 1
0V sensor
OEM-A33
Stock ECU being replaced
1ECU power (+B2, main relay)
2Battery constant (BATT, memory)
4Power ground (EC)
8A/C pressure sensor (ACP)
12Intake air temperature (THA, in MAF)
14Starter signal (STSW2)
15Clutch switch (CLSW)
16Neutral switch (NSW)
18CAN low (CANL)
19CAN high (CANH)
20Blower relay (HB)
22Mass air flow (VG)
29MAF sensor ground (E2G)
GND
GND
GND
T4-C3-9 Lambda 1 Heater Negative
ECU power (+B, main relay)
T4-C2-3 Analogue 10
T4-C2-22 Cam 1
T4-C2-12 Crank
T4-C2-1 Analogue 2
T4-C3-18 Analogue 8
T4-C2-2 Wheel 1
0V sensor
T4-C2-16 Analogue 11
5V ref
OEM-A34
Stock ECU being replaced
1Power ground (E03)
2Power ground (E04)
3Power ground (E05)
5A/F ratio sensor heater (HA1A)
6ECU power (+B, main relay)
11DI injector confirmation (IJF1)
14VVT cam sensor exhaust bank 1 (EV1+)
16Crank position (NE+)
20Manifold absolute pressure (PIM)
21Heated oxygen sensor (OX1B, rear)
26VVT cam sensor intake bank 1 (VV1+)
27Crank position return (NE-)
31DI injector confirmation (IJF2)
34OCV power source (VCV, 5V)
T4-C3-25 PWM 7
T4-C3-10 PWM 8
T4-C1-3 PWM 3
T4-C1-4 PWM 2
T4-C1-5 PWM 1
T4-C3-23 PWM 5
5V ref
5V ref
T4-C2-19 Analogue 6
0V sensor
0V sensor
T4-C2-5 Analogue 3
T4-C3-24 PWM 6
OEM-A35
Stock ECU being replaced
5Injector relay (IREL)
7ETCS relay (+BM)
11Cooling fan relay 3 (FAN1)
12Cooling fan relay 2 (FAN2)
13EFI main relay 1 (SSHUT)
17ETCS relay (MCR)
21Accelerator pedal 5V supply (VCPA)
22Accelerator pedal 5V supply (VCP2)
23Accelerator pedal position (VPA)
29Accelerator pedal ground (EPA)
30Accelerator pedal ground (EPA2)
31Accelerator pedal position 2 (VPA2)
35A/C clutch relay (AC)
T4-C1-6 Motor 1 +
T4-C1-7 Motor 1 -
GND
GND
T4-C1-26 Coil 4
T4-C1-18 Coil 2
T4-C1-9 Injector 1
T4-C1-34 Injector 3
T4-C1-17 Injector 2
T4-C3-17 Analogue 7
5V ref
T4-C2-17 Thermistor 3
T4-C1-10 Coil 1
T4-C1-34 Injector 3
T4-C1-25 Injector 4
T4-C1-9 Injector 1
T4-C1-25 Injector 4
T4-C2-6 Analogue 4
0V sensor
T4-C2-7 Thermistor 1
T4-C1-1 Coil 3
T4-C1-17 Injector 2
OEM-A36
Stock ECU being replaced
1Throttle actuator motor - (M-)
2Throttle actuator motor + (M+)
3Power ground (E02)
4Power ground (E01)
8Ignition coil 4 (IGT4)
10Ignition coil 2 (IGT2)
12Injector 1 port (#10)
13Injector 4 port (#40)
14Injector 1 direct (#1)
18Throttle position (VTA1)
19Sensor 5V supply (VC)
20Oil temperature (OT)
21Ignition coil 1 (IGT1)
22Injector 2 port (#20)
23Injector 4 direct (#4)
24Injector 3 direct (#3)
25Injector 2 direct (#2)
28Throttle position 2 (VTA2)
29Sensor ground (E1)
30Engine coolant temperature (THW)
31Ignition coil 3 (IGT3)
32Injector 3 port (#30)
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-A36-31 Ignition coil 3 (IGT3)
OEM-A35-11 Cooling fan relay 3 (FAN1)
OEM-A35-12 Cooling fan relay 2 (FAN2)
OEM-A35-13 EFI main relay 1 (SSHUT)
OEM-A36-1 Throttle actuator motor - (M-)
OEM-A36-2 Throttle actuator motor + (M+)
Injector 1 port (#10) · 2 pins
OEM-A36-21 Ignition coil 1 (IGT1)
GND
GND
Injector 1 direct (#1) · 2 pins
OEM-A36-10 Ignition coil 2 (IGT2)
Injector 2 direct (#2) · 2 pins
OEM-A36-8 Ignition coil 4 (IGT4)
Ignition 12v In
Injector 2 port (#20) · 2 pins
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
26CAN High
28CAN Low
33Sensor Ground
34Analogue 9
OEM-A34-20 Manifold absolute pressure (PIM)
OEM-A34-26 VVT cam sensor intake bank 1 (VV1+)
OEM-A34-11 DI injector confirmation (IJF1)
OEM-A33-14 Starter signal (STSW2)
OEM-A35-31 Accelerator pedal position 2 (VPA2)
OEM-A36-28 Throttle position 2 (VTA2)
OEM-A36-30 Engine coolant temperature (THW)
OEM-A33-22 Mass air flow (VG)
OEM-A34-16 Crank position (NE+)
OEM-A33-15 Clutch switch (CLSW)
OEM-A33-16 Neutral switch (NSW)
OEM-A34-31 DI injector confirmation (IJF2)
OEM-A36-20 Oil temperature (OT)
OEM-A35-23 Accelerator pedal position (VPA)
0V sensor
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
5V ref
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A33-19 CAN high (CANH)
OEM-A33-18 CAN low (CANL)
0V sensor
OEM-A33-8 A/C pressure sensor (ACP)
T4-C3
T4
9Lambda 1 Heater Negative
10PWM 8
17Analogue 7
18Analogue 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
OEM-A34-5 A/F ratio sensor heater (HA1A)
OEM-A35-7 ETCS relay (+BM)
OEM-A36-18 Throttle position (VTA1)
OEM-A34-21 Heated oxygen sensor (OX1B, rear)
OEM-A33-20 Blower relay (HB)
OEM-A35-17 ETCS relay (MCR)
OEM-A35-35 A/C clutch relay (AC)
OEM-A35-5 Injector relay (IREL)
Permanent 12v
SP-14V · 4 pins
SP-GND · 9 pins
SP-0V · 8 pins
SP-5V1 · 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.
68 / 68 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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