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)
T12-C2-15 Digital 5
GND
T12-C2-27 Digital 6
T12-C3-18 Analogue 8
T12-C2-25 Thermistor 2
T12-C2-4 Digital 1
T12-C2-8 Digital 2
T12-C2-11 Digital 3
T12-C2-14 Digital 4
T12-C3-34 CAN 2 Low
T12-C3-33 CAN 2 High
T12-C3-22 PWM 4
T12-C2-10 Analogue 1
0V sensor
OEM-A33
Stock ECU being replaced
1ECU power (+B2, main relay)
2Battery constant (BATT, memory)
3Stop light switch (ST1-)
4Power ground (EC)
7Stop light switch (STP)
8A/C pressure sensor (ACP)
12Intake air temperature (THA, in MAF)
14Starter signal (STSW2)
15Clutch switch (CLSW)
16Neutral switch (NSW)
17Starter signal (STSW2)
18CAN low (CANL)
19CAN high (CANH)
20Blower relay (HB)
22Mass air flow (VG)
29MAF sensor ground (E2G)
GND
GND
GND
T12-C3-9 Lambda 1 Heater Negative
ECU power (+B, main relay)
T12-C2-16 Analogue 11
T12-C2-34 Analogue 9
T12-C1-21 Injector 9
T12-C2-22 Cam 1
T12-C2-30 Cam 4
T12-C2-12 Crank
T12-C3-32 Knock 2
T12-C2-1 Analogue 2
T12-C3-17 Analogue 7
T12-C2-23 Cam 3
T12-C2-29 Cam 2
0V sensor
T12-C3-31 Knock 1
T12-C2-3 Analogue 10
T12-C1-22 Injector 10
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)
9Fuel pressure sensor (PR)
11DI injector confirmation (IJF1)
13High-pressure fuel pump spill valve (FPF)
14VVT cam sensor exhaust bank 1 (EV1+)
15VVT cam sensor intake bank 2 (VV2+)
16Crank position (NE+)
17Knock sensor 2 (KNK2)
20Manifold absolute pressure (PIM)
21Heated oxygen sensor (OX1B, rear)
25VVT cam sensor exhaust bank 2 (EV2+)
26VVT cam sensor intake bank 1 (VV1+)
27Crank position return (NE-)
28Knock sensor 1 (KNK1)
31DI injector confirmation (IJF2)
32High-pressure fuel pump spill valve (FPD)
34OCV power source (VCV, 5V)
T12-C1-8 Injector 11
T12-C3-25 PWM 7
T12-C3-10 PWM 8
T12-C1-29 Motor 2 +
T12-C2-13 Analogue 12
T12-C1-3 PWM 3
T12-C1-4 PWM 2
T12-C1-5 PWM 1
T12-C3-23 PWM 5
T12-C1-32 Injector 12
T12-C3-13 Analogue 13
5V ref
5V ref
T12-C2-18 Analogue 5
T12-C3-19 Digital 7
0V sensor
0V sensor
T12-C2-5 Analogue 3
T12-C3-24 PWM 6
OEM-A35
Stock ECU being replaced
1Canister vent valve (VPMP)
5Injector relay (IREL)
7ETCS relay (+BM)
8Leak detection pump (MPMP)
10Fuel pump control monitor (DI)
11Cooling fan relay 3 (FAN1)
12Cooling fan relay 2 (FAN2)
13EFI main relay 1 (SSHUT)
17ETCS relay (MCR)
19Fuel pump control (FPC)
20Canister pressure sensor (PPMP)
21Accelerator pedal 5V supply (VCPA)
22Accelerator pedal 5V supply (VCP2)
23Accelerator pedal position (VPA)
26Starter signal (STA)
29Accelerator pedal ground (EPA)
30Accelerator pedal ground (EPA2)
31Accelerator pedal position 2 (VPA2)
35A/C clutch relay (AC)
T12-C1-6 Motor 1 +
T12-C1-7 Motor 1 -
GND
GND
T12-C3-30 PWM 12
T12-C3-3 Lambda 2 Heater Negative
T12-C3-28 PWM 10
T12-C1-26 Coil 4
T12-C1-18 Coil 2
T12-C1-30 Motor 2 -
T12-C1-9 Injector 1
T12-C1-24 Injector 7
T12-C1-17 Injector 2
T12-C3-29 PWM 11
T12-C3-4 PWM 9
T12-C2-19 Analogue 6
5V ref
T12-C2-17 Thermistor 3
T12-C1-10 Coil 1
T12-C1-34 Injector 3
T12-C1-23 Injector 8
T12-C1-16 Injector 5
T12-C1-25 Injector 4
T12-C2-6 Analogue 4
0V sensor
T12-C2-7 Thermistor 1
T12-C1-1 Coil 3
T12-C1-15 Injector 6
OEM-A36
Stock ECU being replaced
1Throttle actuator motor - (M-)
2Throttle actuator motor + (M+)
3Power ground (E02)
4Power ground (E01)
5OCV exhaust bank 2 (OE2)
6Heated oxygen sensor heater (HT1B)
7OCV exhaust bank 1 (OE1)
8Ignition coil 4 (IGT4)
10Ignition coil 2 (IGT2)
11Purge valve (PRG)
12Injector 1 port (#10)
13Injector 4 port (#40)
14Injector 1 direct (#1)
16OCV intake bank 2 (OC2)
17OCV intake bank 1 (OC1)
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)
T12
T12-C1
T12
1Coil 3
3PWM 3
4PWM 2
5PWM 1
6Motor 1 +
7Motor 1 -
8Injector 11
9Injector 1
10Coil 1
13Power Ground 1
14Power Ground 2
15Injector 6
16Injector 5
17Injector 2
18Coil 2
21Injector 9
22Injector 10
23Injector 8
24Injector 7
25Injector 4
26Coil 4
29Motor 2 +
30Motor 2 -
31Ignition 12v In
32Injector 12
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+)
OEM-A35-1 Canister vent valve (VPMP)
OEM-A36-12 Injector 1 port (#10)
OEM-A36-21 Ignition coil 1 (IGT1)
GND
GND
OEM-A36-32 Injector 3 port (#30)
OEM-A36-24 Injector 3 direct (#3)
OEM-A36-14 Injector 1 direct (#1)
OEM-A36-10 Ignition coil 2 (IGT2)
OEM-A34-13 High-pressure fuel pump spill valve (FPF)
OEM-A34-32 High-pressure fuel pump spill valve (FPD)
OEM-A36-23 Injector 4 direct (#4)
OEM-A36-13 Injector 4 port (#40)
OEM-A36-25 Injector 2 direct (#2)
OEM-A36-8 Ignition coil 4 (IGT4)
OEM-A35-8 Leak detection pump (MPMP)
OEM-A36-11 Purge valve (PRG)
Ignition 12v In
OEM-A35-19 Fuel pump control (FPC)
OEM-A36-22 Injector 2 port (#20)
T12-C2
T12
1Analogue 2
3Analogue 10
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
8Digital 2
10Analogue 1
11Digital 3
12Crank
13Analogue 12
14Digital 4
15Digital 5
16Analogue 11
17Thermistor 3
18Analogue 5
19Analogue 6
21Sensor Ground
22Cam 1
23Cam 3
245v Output
25Thermistor 2
27Digital 6
29Cam 2
30Cam 4
33Sensor Ground
34Analogue 9
OEM-A34-20 Manifold absolute pressure (PIM)
OEM-A34-31 DI injector confirmation (IJF2)
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-A33-15 Clutch switch (CLSW)
OEM-A33-22 Mass air flow (VG)
OEM-A33-16 Neutral switch (NSW)
OEM-A34-16 Crank position (NE+)
OEM-A35-10 Fuel pump control monitor (DI)
OEM-A33-17 Starter signal (STSW2)
OEM-A33-3 Stop light switch (ST1-)
OEM-A34-9 Fuel pressure sensor (PR)
OEM-A36-20 Oil temperature (OT)
OEM-A35-23 Accelerator pedal position (VPA)
OEM-A36-18 Throttle position (VTA1)
0V sensor
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
OEM-A34-25 VVT cam sensor exhaust bank 2 (EV2+)
5V ref
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A33-7 Stop light switch (STP)
OEM-A34-26 VVT cam sensor intake bank 1 (VV1+)
OEM-A34-15 VVT cam sensor intake bank 2 (VV2+)
0V sensor
OEM-A34-11 DI injector confirmation (IJF1)
T12-C3
T12
3Lambda 2 Heater Negative
4PWM 9
9Lambda 1 Heater Negative
10PWM 8
13Analogue 13
17Analogue 7
18Analogue 8
19Digital 7
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
28PWM 10
29PWM 11
30PWM 12
31Knock 1
32Knock 2
33CAN 2 High
34CAN 2 Low
OEM-A36-6 Heated oxygen sensor heater (HT1B)
OEM-A36-17 OCV intake bank 1 (OC1)
OEM-A34-5 A/F ratio sensor heater (HA1A)
OEM-A35-7 ETCS relay (+BM)
OEM-A35-20 Canister pressure sensor (PPMP)
OEM-A34-21 Heated oxygen sensor (OX1B, rear)
OEM-A33-8 A/C pressure sensor (ACP)
OEM-A35-26 Starter signal (STA)
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
OEM-A36-7 OCV exhaust bank 1 (OE1)
OEM-A36-16 OCV intake bank 2 (OC2)
OEM-A36-5 OCV exhaust bank 2 (OE2)
OEM-A34-28 Knock sensor 1 (KNK1)
OEM-A34-17 Knock sensor 2 (KNK2)
OEM-A33-19 CAN high (CANH)
OEM-A33-18 CAN low (CANL)
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.
90 / 90 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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