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)
GND
NEXUSS3-C-28 AVI 11
NEXUSS3-C-18 AVI 9
NEXUSS3-C-8 SPI 4
NEXUSS3-C-19 SPI 5
NEXUSS3-C-20 SPI 6
NEXUSS3-A-24 CAN 1 Low
NEXUSS3-A-23 CAN 1 High
NEXUSS3-A-14 DPO 3
NEXUSS3-C-10 AVI 1
NEXUSS3-A-13 Ignition switch input
0V sensor
OEM-A33
Stock ECU being replaced
1ECU power (+B2, main relay)
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)
27Ignition switch sense (IGSW, IG2 relay)
29MAF sensor ground (E2G)
GND
GND
GND
NEXUSS3-C-33 WBI 1 Heater -
ECU power (+B, main relay)
NEXUSS3-C-3 Home +
NEXUSS3-C-7 SPI 3
NEXUSS3-C-1 Trigger +
NEXUSS3-C-24 Knock 2
NEXUSS3-C-11 AVI 2
NEXUSS3-C-16 AVI 7
NEXUSS3-C-6 SPI 2
NEXUSS3-C-5 SPI 1
0V sensor
NEXUSS3-C-23 Knock 1
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+)
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)
34OCV power source (VCV, 5V)
NEXUSS3-A-17 DPO 6
NEXUSS3-A-21 HBO 3
NEXUSS3-A-12 DPO 2
NEXUSS3-A-9 DPO 1
NEXUSS3-A-26 ECR output
NEXUSS3-A-15 DPO 4
5V ref
5V ref
NEXUSS3-C-14 AVI 5
0V sensor
0V sensor
NEXUSS3-C-12 AVI 3
NEXUSS3-A-16 DPO 5
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)
NEXUSS3-A-19 HBO 1
NEXUSS3-A-20 HBO 2
GND
GND
NEXUSS3-A-22 HBO 4
NEXUSS3-A-30 Ignition 4
NEXUSS3-A-28 Ignition 2
NEXUSS3-A-1 Injector 1
NEXUSS3-A-7 Injector 7
NEXUSS3-A-2 Injector 2
NEXUSS3-C-15 AVI 6
5V ref
NEXUSS3-C-27 AVI 10
NEXUSS3-A-27 Ignition 1
NEXUSS3-A-3 Injector 3
NEXUSS3-A-8 Injector 8
NEXUSS3-A-5 Injector 5
NEXUSS3-A-4 Injector 4
NEXUSS3-C-13 AVI 4
0V sensor
NEXUSS3-C-17 AVI 8
NEXUSS3-A-29 Ignition 3
NEXUSS3-A-6 Injector 6
OEM-A36
Stock ECU being replaced
1Throttle actuator motor - (M-)
2Throttle actuator motor + (M+)
3Power ground (E02)
4Power ground (E01)
6Heated oxygen sensor heater (HT1B)
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)
NEXUSS3
NEXUSS3-A
NEXUSS3
1Injector 1
2Injector 2
3Injector 3
4Injector 4
5Injector 5
6Injector 6
7Injector 7
8Injector 8
9DPO 1
10Battery ground
11Battery ground
12DPO 2
13Ignition switch input
14DPO 3
15DPO 4
16DPO 5
17DPO 6
18+12V switched input
19HBO 1
20HBO 2
21HBO 3
22HBO 4
23CAN 1 High
24CAN 1 Low
25+12V switched input
26ECR output
27Ignition 1
28Ignition 2
29Ignition 3
30Ignition 4
OEM-A36-12 Injector 1 port (#10)
OEM-A36-14 Injector 1 direct (#1)
OEM-A36-22 Injector 2 port (#20)
OEM-A36-25 Injector 2 direct (#2)
OEM-A36-24 Injector 3 direct (#3)
OEM-A36-32 Injector 3 port (#30)
OEM-A36-13 Injector 4 port (#40)
OEM-A36-23 Injector 4 direct (#4)
OEM-A35-12 Cooling fan relay 2 (FAN2)
GND
GND
OEM-A35-11 Cooling fan relay 3 (FAN1)
OEM-A33-27 Ignition switch sense (IGSW, IG2 relay)
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)
+12V switched input
OEM-A36-1 Throttle actuator motor - (M-)
OEM-A36-2 Throttle actuator motor + (M+)
OEM-A35-7 ETCS relay (+BM)
OEM-A36-6 Heated oxygen sensor heater (HT1B)
OEM-A33-19 CAN high (CANH)
OEM-A33-18 CAN low (CANL)
+12V switched input
OEM-A35-13 EFI main relay 1 (SSHUT)
OEM-A36-21 Ignition coil 1 (IGT1)
OEM-A36-10 Ignition coil 2 (IGT2)
OEM-A36-31 Ignition coil 3 (IGT3)
OEM-A36-8 Ignition coil 4 (IGT4)
NEXUSS3-C
NEXUSS3
1Trigger +
2Trigger -
3Home +
4Home -
5SPI 1
6SPI 2
7SPI 3
8SPI 4
10AVI 1
11AVI 2
12AVI 3
13AVI 4
14AVI 5
15AVI 6
16AVI 7
17AVI 8
18AVI 9
19SPI 5
20SPI 6
23Knock 1
24Knock 2
25+5V
26Signal ground
27AVI 10
28AVI 11
33WBI 1 Heater -
OEM-A34-16 Crank position (NE+)
SP-0V · 5 pins
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
SP-0V · 5 pins
OEM-A34-26 VVT cam sensor intake bank 1 (VV1+)
OEM-A34-25 VVT cam sensor exhaust bank 2 (EV2+)
OEM-A34-15 VVT cam sensor intake bank 2 (VV2+)
OEM-A33-14 Starter signal (STSW2)
OEM-A33-22 Mass air flow (VG)
OEM-A34-20 Manifold absolute pressure (PIM)
OEM-A35-31 Accelerator pedal position 2 (VPA2)
OEM-A36-28 Throttle position 2 (VTA2)
OEM-A35-23 Accelerator pedal position (VPA)
OEM-A36-18 Throttle position (VTA1)
OEM-A34-21 Heated oxygen sensor (OX1B, rear)
OEM-A36-30 Engine coolant temperature (THW)
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A33-15 Clutch switch (CLSW)
OEM-A33-16 Neutral switch (NSW)
OEM-A34-28 Knock sensor 1 (KNK1)
OEM-A34-17 Knock sensor 2 (KNK2)
5V ref
0V sensor
OEM-A36-20 Oil temperature (OT)
OEM-A33-8 A/C pressure sensor (ACP)
OEM-A34-5 A/F ratio sensor heater (HA1A)
SP-14V · 5 pins
SP-GND · 9 pins
SP-0V · 9 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.
73 / 73 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
| Wire | From | To | Signal | Gauge | Colour | Stripe | Ident | Flags | |
|---|---|---|---|---|---|---|---|---|---|
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — |