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
T12-C2-14 Digital 4
T12-C2-10 Analogue 1
T12-C2-7 Thermistor 1
T12-C2-5 Analogue 3
T12-C2-17 Thermistor 3
T12-C2-4 Digital 1
5V ref
EFI main relay (B+)
EFI main relay (B1+)
T12-C2-11 Digital 3
T12-C2-25 Thermistor 2
T12-C2-1 Analogue 2
0V sensor
T12-C2-31 Wheel 3
T12-C2-8 Digital 2
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)
T12-C1-5 PWM 1
T12-C3-4 PWM 9
T12-C1-4 PWM 2
T12-C1-3 PWM 3
T12-C3-28 PWM 10
T12-C2-6 Analogue 4
T12-C2-15 Digital 5
T12-C2-27 Digital 6
T12-C3-19 Digital 7
T12-C2-18 Analogue 5
Battery constant (BATT)
OEM-B
Stock ECU being replaced
4EFI main relay control (MREL)
5Check-engine lamp (W)
6Fuel pump relay (FPR)
7A/C clutch relay (ACMG)
8Fuel pump control (FC)
11O2 right rear (OXR2)
19Stop light switch (BK)
20A/T kickdown switch (KD)
23A/C request (AC)
24O2 left rear (OXL2)
26Battery constant (BATT)
T12-C3-20 Digital 8
T12-C2-2 Wheel 1
T12-C3-31 Knock 1
T12-C1-10 Coil 1
T12-C2-29 Cam 2
T12-C2-22 Cam 1
T12-C2-12 Crank
T12-C2-20 Wheel 2
T12-C3-32 Knock 2
T12-C1-18 Coil 2
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
1TPS idle switch (IDL)
2Igniter 1 feedback (IGF1)
3Knock sensor 1 (KNK1)
5Ignition 1 (IGT1)
6Cam sensor 2 + (G2+)
7Cam sensor 1 + (G1+)
8Crank sensor + (NE+)
10Igniter 2 feedback (IGF2)
11Knock sensor 2 (KNK2)
13Ignition 2 (IGT2)
15Cam sensor ground (G-)
16Crank sensor - (NE-)
T12-C1-16 Injector 5
T12-C3-10 PWM 8
T12-C3-25 PWM 7
T12-C3-24 PWM 6
T12-C3-23 PWM 5
T12-C1-17 Injector 2
T12-C1-9 Injector 1
GND
T12-C3-22 PWM 4
T12-C3-9 Lambda 1 Heater Negative
T12-C3-3 Lambda 2 Heater Negative
T12-C3-29 PWM 11
T12-C3-30 PWM 12
T12-C1-34 Injector 3
T12-C1-25 Injector 4
GND
OEM-D
Stock ECU being replaced
4Cold start injector (STJ)
5ISC stepper coil 4 (ISC4)
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)
21EGR solenoid
22Fuel pressure-up VSV (PR)
24Injector 3&5 (#40)
25Injector 4&6 (#30)
26Power ground (E02)
T12
T12-C1
T12
3PWM 3
4PWM 2
5PWM 1
9Injector 1
10Coil 1
13Power Ground 1
14Power Ground 2
16Injector 5
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-4 Cold start injector (STJ)
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)
T12-C2
T12
1Analogue 2
2Wheel 1
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
8Digital 2
10Analogue 1
11Digital 3
12Crank
14Digital 4
15Digital 5
17Thermistor 3
18Analogue 5
20Wheel 2
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
27Digital 6
29Cam 2
31Wheel 3
33Sensor Ground
OEM-A-17 O2 right front (OXR1)
OEM-C-2 Igniter 1 feedback (IGF1)
OEM-A-9 Diagnostic test 1 (TE1)
OEM-A-6 O2 left front (OXL1)
OEM-B-11 O2 right rear (OXR2)
OEM-A-5 Coolant temperature (THW)
OEM-A-20 Diagnostic test 2 (TE2)
OEM-A-4 Throttle position (VTA1)
OEM-A-14 Neutral start switch (NSW)
OEM-C-8 Crank sensor + (NE+)
OEM-A-2 Starter signal (STA)
OEM-B-19 Stop light switch (BK)
OEM-A-7 EGR temperature sensor
OEM-B-24 O2 left rear (OXL2)
OEM-C-10 Igniter 2 feedback (IGF2)
0V sensor
OEM-C-7 Cam sensor 1 + (G1+)
5V ref
OEM-A-16 Intake air temperature (THA)
OEM-B-20 A/T kickdown switch (KD)
OEM-C-6 Cam sensor 2 + (G2+)
OEM-A-19 Vehicle speed (SPD)
0V sensor
T12-C3
T12
3Lambda 2 Heater Negative
4PWM 9
9Lambda 1 Heater Negative
10PWM 8
19Digital 7
20Digital 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
28PWM 10
29PWM 11
30PWM 12
31Knock 1
32Knock 2
OEM-D-20 O2 heater 1 (HT1)
OEM-B-5 Check-engine lamp (W)
OEM-D-19 O2 heater 2 (HT2)
OEM-D-5 ISC stepper coil 4 (ISC4)
OEM-B-23 A/C request (AC)
OEM-C-1 TPS idle switch (IDL)
OEM-D-17 Cold start injector 1 (STJ1)
OEM-D-8 ISC stepper coil 1 (ISC1)
OEM-D-7 ISC stepper coil 2 (ISC2)
OEM-D-6 ISC stepper coil 3 (ISC3)
Permanent 12v
OEM-B-8 Fuel pump control (FC)
OEM-D-21 EGR solenoid
OEM-D-22 Fuel pressure-up VSV (PR)
OEM-C-3 Knock sensor 1 (KNK1)
OEM-C-11 Knock sensor 2 (KNK2)
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.
60 / 60 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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