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
T2-C1-32 Thermistor 2
T2-C1-11 Digital 1
T2-C1-30 Digital 2
T2-C1-17 CAN Low
T2-C1-16 CAN High
T2-C1-26 PWM 4
T2-C1-20 Analogue 1
0V sensor
OEM-A33
Stock ECU being replaced
1ECU power (+B2, main relay)
2Battery constant (BATT, memory)
4Power ground (EC)
12Intake air temperature (THA, in MAF)
14Starter signal (STSW2)
15Clutch switch (CLSW)
18CAN low (CANL)
19CAN high (CANH)
20Blower relay (HB)
22Mass air flow (VG)
29MAF sensor ground (E2G)
GND
GND
GND
T2-C1-15 Lambda Heater Negative
ECU power (+B, main relay)
T2-C1-12 Wheel 1
T2-C1-19 Crank
T2-C1-22 Analogue 2
0V sensor
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)
14VVT cam sensor exhaust bank 1 (EV1+)
16Crank position (NE+)
20Manifold absolute pressure (PIM)
27Crank position return (NE-)
34OCV power source (VCV, 5V)
T2-C1-18 PWM 3
T2-C1-10 PWM 2
T2-C1-1 PWM 1
5V ref
5V ref
T2-C1-33 Analogue 5
0V sensor
0V sensor
T2-C1-23 Analogue 3
OEM-A35
Stock ECU being replaced
11Cooling fan relay 3 (FAN1)
12Cooling fan relay 2 (FAN2)
13EFI main relay 1 (SSHUT)
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)
GND
GND
T2-C1-6 Coil 2
T2-C1-8 Injector 1
T2-C1-8 Injector 1
T2-C1-9 Injector 2
T2-C1-34 Analogue 6
5V ref
T2-C1-3 Coil 1
T2-C1-8 Injector 1
T2-C1-9 Injector 2
T2-C1-8 Injector 1
T2-C1-9 Injector 2
T2-C1-25 Analogue 4
0V sensor
T2-C1-24 Thermistor 1
T2-C1-9 Injector 2
OEM-A36
Stock ECU being replaced
3Power ground (E02)
4Power ground (E01)
10Ignition coil 2 (IGT2)
12Injector 1 port (#10)
13Injector 4 port (#40)
14Injector 1 direct (#1)
18Throttle position (VTA1)
19Sensor 5V supply (VC)
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)
32Injector 3 port (#30)
T2
T2-C1
T2
1PWM 1
3Coil 1
6Coil 2
8Injector 1
9Injector 2
10PWM 2
11Digital 1
12Wheel 1
13Power Ground 1
14Power Ground 2
15Lambda Heater Negative
16CAN High
17CAN Low
18PWM 3
19Crank
20Analogue 1
21Permanent 12v
22Analogue 2
23Analogue 3
24Thermistor 1
25Analogue 4
26PWM 4
275v Output
28Sensor Ground
29Sensor Ground
30Digital 2
31Ignition 12v In
32Thermistor 2
33Analogue 5
34Analogue 6
OEM-A35-13 EFI main relay 1 (SSHUT)
OEM-A36-21 Ignition coil 1 (IGT1)
OEM-A36-10 Ignition coil 2 (IGT2)
Injector 3 direct (#3) · 4 pins
Injector 2 · 4 pins
OEM-A35-12 Cooling fan relay 2 (FAN2)
OEM-A33-14 Starter signal (STSW2)
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
GND
GND
OEM-A34-5 A/F ratio sensor heater (HA1A)
OEM-A33-19 CAN high (CANH)
OEM-A33-18 CAN low (CANL)
OEM-A35-11 Cooling fan relay 3 (FAN1)
OEM-A34-16 Crank position (NE+)
OEM-A33-22 Mass air flow (VG)
Permanent 12v
OEM-A34-20 Manifold absolute pressure (PIM)
OEM-A35-31 Accelerator pedal position 2 (VPA2)
OEM-A36-30 Engine coolant temperature (THW)
OEM-A36-28 Throttle position 2 (VTA2)
OEM-A33-20 Blower relay (HB)
5V ref
0V sensor
0V sensor
OEM-A33-15 Clutch switch (CLSW)
Ignition 12v In
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A35-23 Accelerator pedal position (VPA)
OEM-A36-18 Throttle position (VTA1)
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.