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
5V ref
T12-C2-4 Digital 1
T12-C2-20 Wheel 2
T12-C2-12 Crank
0V sensor
T12-C2-1 Analogue 2
T12-C2-10 Analogue 1
T12-C2-31 Wheel 3
T12-C2-22 Cam 1
0V sensor
T12-C2-5 Analogue 3
T12-C2-6 Analogue 4
T12-C2-25 Thermistor 2
T12-C2-32 Wheel 4
T12-C2-29 Cam 2
0V sensor
T12-C2-7 Thermistor 1
0V sensor
OEM-C84
Stock ECU being replaced
1Sensor supply +5V (VCC)
3OD direct-clutch speed sensor (NCO-)
4No.2 speed sensor (SP2-)
5Crank position (NE)
6Crank sensor return (NE-)
7Throttle position (VTA1)
8Manifold pressure (PIM)
9No.2 speed sensor (SP2+)
10Cam position 1 (G1)
11Cam 1 return (G1-)
12TRAC throttle position (VTA2)
13O2 sensor (OX1)
14Intake air temperature (THA)
15OD direct-clutch speed sensor (NCO+)
16Cam position 2 (G2)
17Cam 2 return (G2-)
20Coolant temperature (THW)
22Sensor ground (E2)
T12-C2-8 Digital 2
T12-C1-5 PWM 1
T12-C3-4 PWM 9
T12-C3-28 PWM 10
T12-C2-15 Digital 5
T12-C2-19 Analogue 6
T12-C2-11 Digital 3
T12-C2-18 Analogue 5
GND
OEM-C85
Stock ECU being replaced
1Slave engine speed (NEO)
2EFI main relay control (M-REL)
3Check-engine lamp (W)
4Fuel pump control (FPC)
5Diagnostic test 1 (TE1)
6Timing retard (TR)
10Fuel pump diagnostic (DI)
14ABS active (MT only)
16Power ground (E1)
T12-C3-17 Analogue 7
T12-C2-16 Analogue 11
T12-C3-15 Analogue 15
T12-C1-4 PWM 2
T12-C3-21 Digital 9
T12-C2-27 Digital 6
T12-C3-29 PWM 11
T12-C3-19 Digital 7
T12-C3-20 Digital 8
T12-C2-2 Wheel 1
T12-C2-17 Thermistor 3
Battery constant (BATT)
T12-C3-18 Analogue 8
T12-C2-34 Analogue 9
T12-C2-3 Analogue 10
T12-C2-13 Analogue 12
EFI main relay power (+B)
EFI main relay power (+B1)
T12-C3-13 Analogue 13
T12-C3-14 Analogue 14
OEM-C86
Stock ECU being replaced
1Diagnostic test terminal (TT)
2A/T low-gear indicator (L)
3A/T power/normal mode (P)
5A/C clutch relay (ACMG)
6A/T overdrive disable 2 (OD2)
7A/T overdrive disable 1 (OD1)
8Cat temp warning light (EGW)
10A/T 2nd-gear indicator (2)
11Diagnostic test 2 (TE2)
12No.1 speed sensor (SP1)
13Cat temperature sensor (CCO)
14Battery constant (BATT)
17A/T throttle position (L3)
18A/T throttle position (L2)
19A/T throttle position (L1)
20A/C request (A/C)
22EFI main relay power (+B)
23EFI main relay power (+B1)
25Stop light switch (STP)
28Electrical load sense (ELS)
T12-C3-9 Lambda 1 Heater Negative
T12-C3-32 Knock 2
T12-C3-31 Knock 1
T12-C3-3 Lambda 2 Heater Negative
T12-C1-34 Injector 3
T12-C1-17 Injector 2
T12-C1-9 Injector 1
T12-C1-3 PWM 3
T12-C2-14 Digital 4
T12-C3-16 Analogue 16
T12-C1-1 Coil 3
T12-C1-18 Coil 2
T12-C3-23 PWM 5
T12-C3-10 PWM 8
T12-C3-25 PWM 7
T12-C3-24 PWM 6
T12-C3-22 PWM 4
T12-C1-10 Coil 1
T12-C1-26 Coil 4
T12-C3-30 PWM 12
GND
T12-C1-27 Coil 6
T12-C1-11 Coil 5
GND
GND
OEM-C88
Stock ECU being replaced
3O2 heater (HT)
4Knock sensor 2 (KNK2, rear)
5Knock sensor 1 (KNK1, front)
7EVAP purge VSV
8Injector 3 (#30, cyl 2&6)
9Injector 2 (#20, cyl 3&5)
10Injector 1 (#10, cyl 1&4)
11A/T shift solenoid 1 (S1)
12Igniter feedback (IGF)
13Starter signal (STA)
15Ignition 3 (IGT3)
16Ignition 2 (IGT2)
17A/T shift solenoid 2 (S2)
20ISC stepper coil 4 (ISCV4)
21ISC stepper coil 3 (ISCV3)
22ISC stepper coil 2 (ISCV2)
23ISC stepper coil 1 (ISCV1)
24Ignition 1 (IGT1)
26Ignition 4 (IGT4)
27A/T lock-up solenoid (S3)
28Power ground (E11)
29Ignition 6 (IGT6)
30Ignition 5 (IGT5)
33Power ground (E02)
34Power ground (E01)
T12
T12-C1
T12
1Coil 3
3PWM 3
4PWM 2
5PWM 1
9Injector 1
10Coil 1
11Coil 5
13Power Ground 1
14Power Ground 2
17Injector 2
18Coil 2
26Coil 4
27Coil 6
31Ignition 12v In
34Injector 3
OEM-C88-15 Ignition 3 (IGT3)
OEM-C88-11 A/T shift solenoid 1 (S1)
OEM-C86-5 A/C clutch relay (ACMG)
OEM-C85-2 EFI main relay control (M-REL)
OEM-C88-10 Injector 1 (#10, cyl 1&4)
OEM-C88-24 Ignition 1 (IGT1)
OEM-C88-30 Ignition 5 (IGT5)
GND
GND
OEM-C88-9 Injector 2 (#20, cyl 3&5)
OEM-C88-16 Ignition 2 (IGT2)
OEM-C88-26 Ignition 4 (IGT4)
OEM-C88-29 Ignition 6 (IGT6)
Ignition 12v In
OEM-C88-8 Injector 3 (#30, cyl 2&6)
T12-C2
T12
1Analogue 2
2Wheel 1
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
20Wheel 2
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
27Digital 6
29Cam 2
31Wheel 3
32Wheel 4
33Sensor Ground
34Analogue 9
OEM-C84-7 Throttle position (VTA1)
OEM-C86-12 No.1 speed sensor (SP1)
OEM-C86-19 A/T throttle position (L1)
OEM-C84-3 OD direct-clutch speed sensor (NCO-)
OEM-C84-12 TRAC throttle position (VTA2)
OEM-C84-13 O2 sensor (OX1)
OEM-C84-20 Coolant temperature (THW)
OEM-C85-1 Slave engine speed (NEO)
OEM-C84-8 Manifold pressure (PIM)
OEM-C85-10 Fuel pump diagnostic (DI)
OEM-C84-5 Crank position (NE)
OEM-C86-20 A/C request (A/C)
OEM-C88-12 Igniter feedback (IGF)
OEM-C85-5 Diagnostic test 1 (TE1)
OEM-C86-2 A/T low-gear indicator (L)
OEM-C86-13 Cat temperature sensor (CCO)
OEM-C85-14 ABS active (MT only)
OEM-C85-6 Timing retard (TR)
OEM-C84-4 No.2 speed sensor (SP2-)
0V sensor
OEM-C84-10 Cam position 1 (G1)
5V ref
OEM-C84-14 Intake air temperature (THA)
OEM-C86-7 A/T overdrive disable 1 (OD1)
OEM-C84-16 Cam position 2 (G2)
OEM-C84-9 No.2 speed sensor (SP2+)
OEM-C84-15 OD direct-clutch speed sensor (NCO+)
0V sensor
OEM-C86-18 A/T throttle position (L2)
T12-C3
T12
3Lambda 2 Heater Negative
4PWM 9
9Lambda 1 Heater Negative
10PWM 8
13Analogue 13
14Analogue 14
15Analogue 15
16Analogue 16
17Analogue 7
18Analogue 8
19Digital 7
20Digital 8
21Digital 9
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
28PWM 10
29PWM 11
30PWM 12
31Knock 1
32Knock 2
OEM-C88-7 EVAP purge VSV
OEM-C85-3 Check-engine lamp (W)
OEM-C88-3 O2 heater (HT)
OEM-C88-20 ISC stepper coil 4 (ISCV4)
OEM-C86-25 Stop light switch (STP)
OEM-C86-28 Electrical load sense (ELS)
OEM-C86-3 A/T power/normal mode (P)
OEM-C88-13 Starter signal (STA)
OEM-C86-1 Diagnostic test terminal (TT)
OEM-C86-17 A/T throttle position (L3)
OEM-C86-10 A/T 2nd-gear indicator (2)
OEM-C86-11 Diagnostic test 2 (TE2)
OEM-C86-6 A/T overdrive disable 2 (OD2)
OEM-C88-23 ISC stepper coil 1 (ISCV1)
OEM-C88-17 A/T shift solenoid 2 (S2)
OEM-C88-22 ISC stepper coil 2 (ISCV2)
OEM-C88-21 ISC stepper coil 3 (ISCV3)
Permanent 12v
OEM-C85-4 Fuel pump control (FPC)
OEM-C86-8 Cat temp warning light (EGW)
OEM-C88-27 A/T lock-up solenoid (S3)
OEM-C88-5 Knock sensor 1 (KNK1, front)
OEM-C88-4 Knock sensor 2 (KNK2, rear)
SP-0V · 7 pins
SP-14V · 4 pins
SP-GND · 7 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.
77 / 77 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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