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Toyota 86 (ZN6, FA20) → DTAFast T2i (auto)

Toyota 86 (ZN6, FA20) — DTAFast — T2i
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11

Before you start

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.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors9: read the Findings page before cutting any wire
Size of the job45 wires · 9 connectors · 2 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Terminals3-1447221-4
Order of work1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up.

Build checklist

Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.

WireFromToGaugeColourCutLabelCrimp ACrimp BPin APin BContinuity
W1OEM-A33-1SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-A34-6SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1T2I-C1-310.85☐☐☐☐☐☐☐
W4OEM-A33-2T2I-C1-210.85☐☐☐☐☐☐☐
W5OEM-A33-4SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-A34-1SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-A34-2SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-A34-3SP-GND-10.85☐☐☐☐☐☐☐
W9OEM-A36-3SP-GND-10.85☐☐☐☐☐☐☐
W10OEM-A36-4SP-GND-10.85☐☐☐☐☐☐☐
W11SP-GND-1T2I-C1-130.85☐☐☐☐☐☐☐
W12SP-GND-1T2I-C1-140.85☐☐☐☐☐☐☐
W13OEM-A33-29SP-0V-10.5☐☐☐☐☐☐☐
W14OEM-A34-27SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-A35-29SP-0V-10.5☐☐☐☐☐☐☐
W16OEM-A35-30SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-A36-29SP-0V-10.5☐☐☐☐☐☐☐
W18SP-0V-1T2I-C1-280.5☐☐☐☐☐☐☐
W19SP-0V-1T2I-C1-290.5☐☐☐☐☐☐☐
W20OEM-A34-34SP-5V1-10.5☐☐☐☐☐☐☐
W21OEM-A35-21SP-5V1-10.5☐☐☐☐☐☐☐
W22OEM-A35-22SP-5V1-10.5☐☐☐☐☐☐☐
W23OEM-A36-19SP-5V1-10.5☐☐☐☐☐☐☐
W24SP-5V1-1T2I-C1-270.5☐☐☐☐☐☐☐
W25OEM-A34-16T2I-C1-190.5☐☐☐☐☐☐☐
W26OEM-A34-14T2I-C1-120.5☐☐☐☐☐☐☐
W27OEM-A36-21T2I-C1-30.5☐☐☐☐☐☐☐
W28OEM-A36-10T2I-C1-60.5☐☐☐☐☐☐☐
W29OEM-A35-13T2I-C1-10.5☐☐☐☐☐☐☐
W30OEM-A35-12T2I-C1-100.5☐☐☐☐☐☐☐
W31OEM-A35-11T2I-C1-180.5☐☐☐☐☐☐☐
W32OEM-A33-20T2I-C1-260.5☐☐☐☐☐☐☐
W33OEM-A34-5T2I-C1-150.5☐☐☐☐☐☐☐
W34OEM-A33-22T2I-C1-200.5☐☐☐☐☐☐☐
W35OEM-A34-20T2I-C1-220.5☐☐☐☐☐☐☐
W36OEM-A35-31T2I-C1-230.5☐☐☐☐☐☐☐
W37OEM-A36-28T2I-C1-250.5☐☐☐☐☐☐☐
W38OEM-A35-23T2I-C1-330.5☐☐☐☐☐☐☐
W39OEM-A36-18T2I-C1-340.5☐☐☐☐☐☐☐
W40OEM-A36-30T2I-C1-240.5☐☐☐☐☐☐☐
W41OEM-A33-12T2I-C1-320.5☐☐☐☐☐☐☐
W42OEM-A33-14T2I-C1-110.5☐☐☐☐☐☐☐
W43OEM-A33-15T2I-C1-300.5☐☐☐☐☐☐☐
W44OEM-A33-19T2I-C1-160.5☐☐☐☐☐☐☐
W45OEM-A33-18T2I-C1-170.5☐☐☐☐☐☐☐

Bench test (before first power-up)

Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).

#Probe AProbe BExpectWhyReading
1T2I-C1-21T2I-C1-13open (OL)+12 V supply must not touch power ground
2T2I-C1-21T2I-C1-28open (OL)+12 V supply must not touch sensor ground
3T2I-C1-31T2I-C1-13open (OL)+12 V supply must not touch power ground
4T2I-C1-31T2I-C1-28open (OL)+12 V supply must not touch sensor ground
5T2I-C1-13T2I-C1-27open (OL)power ground must not touch 5 V sensor reference
6T2I-C1-21T2I-C1-27open (OL)+12 V supply must not touch 5 V sensor reference
7T2I-C1-28T2I-C1-27open (OL)sensor ground must not touch 5 V sensor reference
8T2I-C1-31T2I-C1-27open (OL)+12 V supply must not touch 5 V sensor reference

If any reading doesn't match, stop and get help before powering up.

Revisions

RevLabelByDate
No revisions yet.

Schematic

OEM-A33OEM-A34OEM-A35OEM-A36SP-0VSP-14VSP-5V1SP-GNDT2I-C1

Connectors

OEM-A33

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1ECU power (+B2, main relay)—W1—0.85SP-14V-1———
12Intake air temperature (THA, in MAF)—W41—0.5T2I-C1-32———
14Starter signal (STSW2)—W42—0.5T2I-C1-11———
15Clutch switch (CLSW)—W43—0.5T2I-C1-30———
16Neutral switch (NSW)————————
17Starter signal (STSW2)————————
18CAN low (CANL)—W45—0.5T2I-C1-17———
19CAN high (CANH)—W44—0.5T2I-C1-16———
2Battery constant (BATT, memory)—W4—0.85T2I-C1-21———
20Blower relay (HB)—W32—0.5T2I-C1-26———
22Mass air flow (VG)—W34—0.5T2I-C1-20———
27Ignition switch sense (IGSW, IG2 relay)————————
28Shield ground (SLE2)————————
29MAF sensor ground (E2G)—W13—0.5SP-0V-1———
3Stop light switch (ST1-)————————
4Power ground (EC)—W5—0.85SP-GND-1———
7Stop light switch (STP)————————
8A/C pressure sensor (ACP)————————

OEM-A34

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Power ground (E03)—W6—0.85SP-GND-1———
11DI injector confirmation (IJF1)————————
13High-pressure fuel pump spill valve (FPF)————————
14VVT cam sensor exhaust bank 1 (EV1+)—W26—0.5T2I-C1-12———
15VVT cam sensor intake bank 2 (VV2+)————————
16Crank position (NE+)—W25—0.5T2I-C1-19———
17Knock sensor 2 (KNK2)————————
18A/F ratio sensor (A1A-)————————
19A/F ratio sensor (A1A+)————————
2Power ground (E04)—W7—0.85SP-GND-1———
20Manifold absolute pressure (PIM)—W35—0.5T2I-C1-22———
21Heated oxygen sensor (OX1B, rear)————————
25VVT cam sensor exhaust bank 2 (EV2+)————————
26VVT cam sensor intake bank 1 (VV1+)————————
27Crank position return (NE-)—W14—0.5SP-0V-1———
28Knock sensor 1 (KNK1)————————
29Shield ground (EKNK)————————
3Power ground (E05)—W8—0.85SP-GND-1———
30Shield ground (SLE1)————————
31DI injector confirmation (IJF2)————————
32High-pressure fuel pump spill valve (FPD)————————
34OCV power source (VCV, 5V)—W20—0.5SP-5V1-1———
35Shield ground (SLE3)————————
5A/F ratio sensor heater (HA1A)—W33—0.5T2I-C1-15———
6ECU power (+B, main relay)—W2—0.85SP-14V-1———
9Fuel pressure sensor (PR)————————

OEM-A35

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Canister vent valve (VPMP)————————
10Fuel pump control monitor (DI)————————
11Cooling fan relay 3 (FAN1)—W31—0.5T2I-C1-18———
12Cooling fan relay 2 (FAN2)—W30—0.5T2I-C1-10———
13EFI main relay 1 (SSHUT)—W29—0.5T2I-C1-1———
15Tachometer output (TACH)————————
17ETCS relay (MCR)————————
19Fuel pump control (FPC)————————
20Canister pressure sensor (PPMP)————————
21Accelerator pedal 5V supply (VCPA)—W21—0.5SP-5V1-1———
22Accelerator pedal 5V supply (VCP2)—W22—0.5SP-5V1-1———
23Accelerator pedal position (VPA)—W38—0.5T2I-C1-33———
26Starter signal (STA)————————
29Accelerator pedal ground (EPA)—W15—0.5SP-0V-1———
30Accelerator pedal ground (EPA2)—W16—0.5SP-0V-1———
31Accelerator pedal position 2 (VPA2)—W36—0.5T2I-C1-23———
35A/C clutch relay (AC)————————
5Injector relay (IREL)————————
7ETCS relay (+BM)————————
8Leak detection pump (MPMP)————————

OEM-A36

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Throttle actuator motor - (M-)————————
10Ignition coil 2 (IGT2)—W28—0.5T2I-C1-6———
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)—W39—0.5T2I-C1-34———
19Sensor 5V supply (VC)—W23—0.5SP-5V1-1———
2Throttle actuator motor + (M+)————————
20Oil temperature (OT)————————
21Ignition coil 1 (IGT1)—W27—0.5T2I-C1-3———
22Injector 2 port (#20)————————
23Injector 4 direct (#4)————————
24Injector 3 direct (#3)————————
25Injector 2 direct (#2)————————
28Throttle position 2 (VTA2)—W37—0.5T2I-C1-25———
29Sensor ground (E1)—W17—0.5SP-0V-1———
3Power ground (E02)—W9—0.85SP-GND-1———
30Engine coolant temperature (THW)—W40—0.5T2I-C1-24———
31Ignition coil 3 (IGT3)————————
32Injector 3 port (#30)————————
4Power ground (E01)—W10—0.85SP-GND-1———
5OCV exhaust bank 2 (OE2)————————
6Heated oxygen sensor heater (HT1B)————————
7OCV exhaust bank 1 (OE1)————————
8Ignition coil 4 (IGT4)————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W13—0.5OEM-A33-29———
1——W14—0.5OEM-A34-27———
1——W15—0.5OEM-A35-29———
1——W16—0.5OEM-A35-30———
1——W17—0.5OEM-A36-29———
1——W18—0.5T2I-C1-28———
1——W19—0.5T2I-C1-29———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A33-1———
1——W2—0.85OEM-A34-6———
1——W3—0.85T2I-C1-31———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W20—0.5OEM-A34-34———
1——W21—0.5OEM-A35-21———
1——W22—0.5OEM-A35-22———
1——W23—0.5OEM-A36-19———
1——W24—0.5T2I-C1-27———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W10—0.85OEM-A36-4———
1——W5—0.85OEM-A33-4———
1——W6—0.85OEM-A34-1———
1——W7—0.85OEM-A34-2———
1——W8—0.85OEM-A34-3———
1——W9—0.85OEM-A36-3———
1——W11—0.85T2I-C1-13———
1——W12—0.85T2I-C1-14———

T2I-C1

Mating face
T2I-C1-1 · PWM 11T2I-C1-2 · Lambda Nernst Voltage2T2I-C1-3 · Coil 13T2I-C1-4 · Lambda VGND4T2I-C1-5 · Lambda Pump Current5T2I-C1-6 · Coil 26T2I-C1-7 · Lambda Trim Resistor7T2I-C1-88T2I-C1-99T2I-C1-10 · PWM 210T2I-C1-11 · Digital 111T2I-C1-12 · Wheel 112T2I-C1-13 · Power Ground 113T2I-C1-14 · Power Ground 214T2I-C1-15 · Lambda Heater Negative15T2I-C1-16 · CAN High16T2I-C1-17 · CAN Low17T2I-C1-18 · PWM 318T2I-C1-19 · Crank19T2I-C1-20 · Analogue 120T2I-C1-21 · Permanent 12v21T2I-C1-22 · Analogue 222T2I-C1-23 · Analogue 323T2I-C1-24 · Thermistor 124T2I-C1-25 · Analogue 425T2I-C1-26 · PWM 426T2I-C1-27 · 5v Output27T2I-C1-28 · Sensor Ground28T2I-C1-29 · Sensor Ground29T2I-C1-30 · Digital 230T2I-C1-31 · Ignition 12v In31T2I-C1-32 · Thermistor 232T2I-C1-33 · Analogue 533T2I-C1-34 · Analogue 634
Wire side
T2I-C1-1 · PWM 11T2I-C1-2 · Lambda Nernst Voltage2T2I-C1-3 · Coil 13T2I-C1-4 · Lambda VGND4T2I-C1-5 · Lambda Pump Current5T2I-C1-6 · Coil 26T2I-C1-7 · Lambda Trim Resistor7T2I-C1-88T2I-C1-99T2I-C1-10 · PWM 210T2I-C1-11 · Digital 111T2I-C1-12 · Wheel 112T2I-C1-13 · Power Ground 113T2I-C1-14 · Power Ground 214T2I-C1-15 · Lambda Heater Negative15T2I-C1-16 · CAN High16T2I-C1-17 · CAN Low17T2I-C1-18 · PWM 318T2I-C1-19 · Crank19T2I-C1-20 · Analogue 120T2I-C1-21 · Permanent 12v21T2I-C1-22 · Analogue 222T2I-C1-23 · Analogue 323T2I-C1-24 · Thermistor 124T2I-C1-25 · Analogue 425T2I-C1-26 · PWM 426T2I-C1-27 · 5v Output27T2I-C1-28 · Sensor Ground28T2I-C1-29 · Sensor Ground29T2I-C1-30 · Digital 230T2I-C1-31 · Ignition 12v In31T2I-C1-32 · Thermistor 232T2I-C1-33 · Analogue 533T2I-C1-34 · Analogue 634
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1PWM 1—W29—0.5OEM-A35-13———
2Lambda Nernst Voltage————————
3Coil 1—W27—0.5OEM-A36-21———
4Lambda VGND————————
5Lambda Pump Current————————
6Coil 2—W28—0.5OEM-A36-10———
7Lambda Trim Resistor————————
8—————————
9—————————
10PWM 2—W30—0.5OEM-A35-12———
11Digital 1—W42—0.5OEM-A33-14———
12Wheel 1—W26—0.5OEM-A34-14———
13Power Ground 1—W11—0.85SP-GND-1———
14Power Ground 2—W12—0.85SP-GND-1———
15Lambda Heater Negative—W33—0.5OEM-A34-5———
16CAN High—W44—0.5OEM-A33-19———
17CAN Low—W45—0.5OEM-A33-18———
18PWM 3—W31—0.5OEM-A35-11———
19Crank—W25—0.5OEM-A34-16———
20Analogue 1—W34—0.5OEM-A33-22———
21Permanent 12v—W4—0.85OEM-A33-2———
22Analogue 2—W35—0.5OEM-A34-20———
23Analogue 3—W36—0.5OEM-A35-31———
24Thermistor 1—W40—0.5OEM-A36-30———
25Analogue 4—W37—0.5OEM-A36-28———
26PWM 4—W32—0.5OEM-A33-20———
275v Output—W24—0.5SP-5V1-1———
28Sensor Ground—W18—0.5SP-0V-1———
29Sensor Ground—W19—0.5SP-0V-1———
30Digital 2—W43—0.5OEM-A33-15———
31Ignition 12v In—W3—0.85SP-14V-1———
32Thermistor 2—W41—0.5OEM-A33-12———
33Analogue 5—W38—0.5OEM-A35-23———
34Analogue 6—W39—0.5OEM-A36-18———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A33-1ECU power (+B2, main relay)power_inT2I-C1-31Ignition 12v Inpower_insingle_source
OEM-A33-12Intake air temperature (THA, in MAF)temp_inT2I-C1-32Thermistor 2temp_insingle_source
OEM-A33-14Starter signal (STSW2)digital_inT2I-C1-11Digital 1digital_insingle_source
OEM-A33-15Clutch switch (CLSW)digital_inT2I-C1-30Digital 2digital_insingle_source
OEM-A33-16Neutral switch (NSW)digital_in———single_source
OEM-A33-17Starter signal (STSW2)digital_in———single_source
OEM-A33-18CAN low (CANL)can_lT2I-C1-17CAN Lowcan_lsingle_source
OEM-A33-19CAN high (CANH)can_hT2I-C1-16CAN Highcan_hsingle_source
OEM-A33-2Battery constant (BATT, memory)power_inT2I-C1-21Permanent 12vpower_insingle_source
OEM-A33-20Blower relay (HB)low_side_outT2I-C1-26PWM 4low_side_outsingle_source
OEM-A33-22Mass air flow (VG)analog_inT2I-C1-20Analogue 1analog_insingle_source
OEM-A33-27Ignition switch sense (IGSW, IG2 relay)digital_in———single_source
OEM-A33-28Shield ground (SLE2)shield———single_source
OEM-A33-29MAF sensor ground (E2G)sensor_groundT2I-C1-28 + T2I-C1-29Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A33-3Stop light switch (ST1-)digital_in———single_source
OEM-A33-4Power ground (EC)groundT2I-C1-13 + T2I-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-A33-7Stop light switch (STP)digital_in———single_source
OEM-A33-8A/C pressure sensor (ACP)analog_in———single_source
OEM-A34-1Power ground (E03)groundT2I-C1-13 + T2I-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-A34-11DI injector confirmation (IJF1)analog_in———single_source
OEM-A34-13High-pressure fuel pump spill valve (FPF)low_side_out———single_source
OEM-A34-14VVT cam sensor exhaust bank 1 (EV1+)trigger_inT2I-C1-12Wheel 1digital_insingle_source
OEM-A34-15VVT cam sensor intake bank 2 (VV2+)trigger_in———single_source
OEM-A34-16Crank position (NE+)trigger_inT2I-C1-19Cranktrigger_insingle_source
OEM-A34-17Knock sensor 2 (KNK2)knock_in———single_source
OEM-A34-18A/F ratio sensor (A1A-)————single_source
OEM-A34-19A/F ratio sensor (A1A+)————single_source
OEM-A34-2Power ground (E04)groundT2I-C1-13 + T2I-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-A34-20Manifold absolute pressure (PIM)analog_inT2I-C1-22Analogue 2analog_insingle_source
OEM-A34-21Heated oxygen sensor (OX1B, rear)lambda_nb_in———single_source
OEM-A34-25VVT cam sensor exhaust bank 2 (EV2+)trigger_in———single_source
OEM-A34-26VVT cam sensor intake bank 1 (VV1+)trigger_in———single_source
OEM-A34-27Crank position return (NE-)sensor_groundT2I-C1-28 + T2I-C1-29Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A34-28Knock sensor 1 (KNK1)knock_in———single_source
OEM-A34-29Shield ground (EKNK)shield———single_source
OEM-A34-3Power ground (E05)groundT2I-C1-13 + T2I-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-A34-30Shield ground (SLE1)shield———single_source
OEM-A34-31DI injector confirmation (IJF2)analog_in———single_source
OEM-A34-32High-pressure fuel pump spill valve (FPD)low_side_out———single_source
OEM-A34-34OCV power source (VCV, 5V)vrefT2I-C1-275v Outputvrefsingle_source
OEM-A34-35Shield ground (SLE3)shield———single_source
OEM-A34-5A/F ratio sensor heater (HA1A)low_side_outT2I-C1-15Lambda Heater Negativelow_side_outsingle_source
OEM-A34-6ECU power (+B, main relay)power_inT2I-C1-31Ignition 12v Inpower_insingle_source
OEM-A34-9Fuel pressure sensor (PR)analog_in———single_source
OEM-A35-1Canister vent valve (VPMP)low_side_out———single_source
OEM-A35-10Fuel pump control monitor (DI)analog_in———single_source
OEM-A35-11Cooling fan relay 3 (FAN1)low_side_outT2I-C1-18PWM 3low_side_outsingle_source
OEM-A35-12Cooling fan relay 2 (FAN2)low_side_outT2I-C1-10PWM 2low_side_outsingle_source
OEM-A35-13EFI main relay 1 (SSHUT)low_side_outT2I-C1-1PWM 1low_side_outsingle_source
OEM-A35-15Tachometer output (TACH)tacho_out———single_source
OEM-A35-17ETCS relay (MCR)low_side_out———single_source
OEM-A35-19Fuel pump control (FPC)low_side_out———single_source
OEM-A35-20Canister pressure sensor (PPMP)analog_in———single_source
OEM-A35-21Accelerator pedal 5V supply (VCPA)vrefT2I-C1-275v Outputvrefsingle_source
OEM-A35-22Accelerator pedal 5V supply (VCP2)vrefT2I-C1-275v Outputvrefsingle_source
OEM-A35-23Accelerator pedal position (VPA)analog_inT2I-C1-33Analogue 5analog_insingle_source
OEM-A35-26Starter signal (STA)digital_in———single_source
OEM-A35-29Accelerator pedal ground (EPA)sensor_groundT2I-C1-28 + T2I-C1-29Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A35-30Accelerator pedal ground (EPA2)sensor_groundT2I-C1-28 + T2I-C1-29Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A35-31Accelerator pedal position 2 (VPA2)analog_inT2I-C1-23Analogue 3analog_insingle_source
OEM-A35-35A/C clutch relay (AC)low_side_out———single_source
OEM-A35-5Injector relay (IREL)low_side_out———single_source
OEM-A35-7ETCS relay (+BM)low_side_out———single_source
OEM-A35-8Leak detection pump (MPMP)low_side_out———single_source
OEM-A36-1Throttle actuator motor - (M-)hbridge_out———single_source
OEM-A36-10Ignition coil 2 (IGT2)ignition_outT2I-C1-6Coil 2ignition_outsingle_source
OEM-A36-11Purge valve (PRG)low_side_out———single_source
OEM-A36-12Injector 1 port (#10)injector_out———single_source
OEM-A36-13Injector 4 port (#40)injector_out———single_source
OEM-A36-14Injector 1 direct (#1)injector_out———single_source
OEM-A36-16OCV intake bank 2 (OC2)low_side_out———single_source
OEM-A36-17OCV intake bank 1 (OC1)low_side_out———single_source
OEM-A36-18Throttle position (VTA1)analog_inT2I-C1-34Analogue 6analog_insingle_source
OEM-A36-19Sensor 5V supply (VC)vrefT2I-C1-275v Outputvrefsingle_source
OEM-A36-2Throttle actuator motor + (M+)hbridge_out———single_source
OEM-A36-20Oil temperature (OT)temp_in———single_source
OEM-A36-21Ignition coil 1 (IGT1)ignition_outT2I-C1-3Coil 1ignition_outsingle_source
OEM-A36-22Injector 2 port (#20)injector_out———single_source
OEM-A36-23Injector 4 direct (#4)injector_out———single_source
OEM-A36-24Injector 3 direct (#3)injector_out———single_source
OEM-A36-25Injector 2 direct (#2)injector_out———single_source
OEM-A36-28Throttle position 2 (VTA2)analog_inT2I-C1-25Analogue 4analog_insingle_source
OEM-A36-29Sensor ground (E1)sensor_groundT2I-C1-28 + T2I-C1-29Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A36-3Power ground (E02)groundT2I-C1-13 + T2I-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-A36-30Engine coolant temperature (THW)temp_inT2I-C1-24Thermistor 1temp_insingle_source
OEM-A36-31Ignition coil 3 (IGT3)ignition_out———single_source
OEM-A36-32Injector 3 port (#30)injector_out———single_source
OEM-A36-4Power ground (E01)groundT2I-C1-13 + T2I-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-A36-5OCV exhaust bank 2 (OE2)low_side_out———single_source
OEM-A36-6Heated oxygen sensor heater (HT1B)low_side_out———single_source
OEM-A36-7OCV exhaust bank 1 (OE1)low_side_out———single_source
OEM-A36-8Ignition coil 4 (IGT4)ignition_out———single_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-A33-1SP-14V-10.85no routeECU power (+B2, main relay)—
W2OEM-A34-6SP-14V-10.85no routeECU power (+B, main relay)—
W3SP-14V-1T2I-C1-310.85no routeIgnition 12v In—
W4OEM-A33-2T2I-C1-210.85no routeBattery constant (BATT, memory)—
W5OEM-A33-4SP-GND-10.85no routePower ground (EC)—
W6OEM-A34-1SP-GND-10.85no routePower ground (E03)—
W7OEM-A34-2SP-GND-10.85no routePower ground (E04)—
W8OEM-A34-3SP-GND-10.85no routePower ground (E05)—
W9OEM-A36-3SP-GND-10.85no routePower ground (E02)—
W10OEM-A36-4SP-GND-10.85no routePower ground (E01)—
W11SP-GND-1T2I-C1-130.85no routePower Ground 1—
W12SP-GND-1T2I-C1-140.85no routePower Ground 2—
W13OEM-A33-29SP-0V-10.5no routeMAF sensor ground (E2G)—
W14OEM-A34-27SP-0V-10.5no routeCrank position return (NE-)—
W15OEM-A35-29SP-0V-10.5no routeAccelerator pedal ground (EPA)—
W16OEM-A35-30SP-0V-10.5no routeAccelerator pedal ground (EPA2)—
W17OEM-A36-29SP-0V-10.5no routeSensor ground (E1)—
W18SP-0V-1T2I-C1-280.5no routeSensor Ground—
W19SP-0V-1T2I-C1-290.5no routeSensor Ground—
W20OEM-A34-34SP-5V1-10.5no routeOCV power source (VCV, 5V)—
W21OEM-A35-21SP-5V1-10.5no routeAccelerator pedal 5V supply (VCPA)—
W22OEM-A35-22SP-5V1-10.5no routeAccelerator pedal 5V supply (VCP2)—
W23OEM-A36-19SP-5V1-10.5no routeSensor 5V supply (VC)—
W24SP-5V1-1T2I-C1-270.5no route5v Output—
W25OEM-A34-16T2I-C1-190.5no routeCrank position (NE+)—
W26OEM-A34-14T2I-C1-120.5no routeVVT cam sensor exhaust bank 1 (EV1+)—
W27OEM-A36-21T2I-C1-30.5no routeIgnition coil 1 (IGT1)—
W28OEM-A36-10T2I-C1-60.5no routeIgnition coil 2 (IGT2)—
W29OEM-A35-13T2I-C1-10.5no routeEFI main relay 1 (SSHUT)—
W30OEM-A35-12T2I-C1-100.5no routeCooling fan relay 2 (FAN2)—
W31OEM-A35-11T2I-C1-180.5no routeCooling fan relay 3 (FAN1)—
W32OEM-A33-20T2I-C1-260.5no routeBlower relay (HB)—
W33OEM-A34-5T2I-C1-150.5no routeA/F ratio sensor heater (HA1A)—
W34OEM-A33-22T2I-C1-200.5no routeMass air flow (VG)—
W35OEM-A34-20T2I-C1-220.5no routeManifold absolute pressure (PIM)—
W36OEM-A35-31T2I-C1-230.5no routeAccelerator pedal position 2 (VPA2)—
W37OEM-A36-28T2I-C1-250.5no routeThrottle position 2 (VTA2)—
W38OEM-A35-23T2I-C1-330.5no routeAccelerator pedal position (VPA)—
W39OEM-A36-18T2I-C1-340.5no routeThrottle position (VTA1)—
W40OEM-A36-30T2I-C1-240.5no routeEngine coolant temperature (THW)—
W41OEM-A33-12T2I-C1-320.5no routeIntake air temperature (THA, in MAF)—
W42OEM-A33-14T2I-C1-110.5no routeStarter signal (STSW2)—
W43OEM-A33-15T2I-C1-300.5no routeClutch switch (CLSW)—
W44OEM-A33-19T2I-C1-160.5no routeCAN high (CANH)—
W45OEM-A33-18T2I-C1-170.5no routeCAN low (CANL)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 11.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)28.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (12)

SeverityCodeSubjectMessage
errorDBW_SENSOR_INPUTtpsOnly 1 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them.
errorREQUIRED_UNMAPPEDOEM-A36-1Required OEM function "Throttle actuator motor - (M-)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-12Required OEM function "Injector 1 port (#10)" (injector_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-13Required OEM function "Injector 4 port (#40)" (injector_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-2Required OEM function "Throttle actuator motor + (M+)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-22Required OEM function "Injector 2 port (#20)" (injector_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-31Required OEM function "Ignition coil 3 (IGT3)" (ignition_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-32Required OEM function "Injector 3 port (#30)" (injector_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-A36-8Required OEM function "Ignition coil 4 (IGT4)" (ignition_out) is not connected to the new ECU.
warnDATASET_GAPT2i C12 of 34 cavities on T2i C1 have no pin data (8,9). Anything there is invisible to these checks.
warnNET_FAMILYOEM-A34-14 ↔ T2I-C1-12OEM-A34-14 "VVT cam sensor exhaust bank 1 (EV1+)" [trigger_in] is wired to T2I-C1-12 "Wheel 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
infoUNMAPPEDOEM45 optional OEM pins are not mapped: OEM-A33-16 Neutral switch (NSW); OEM-A33-17 Starter signal (STSW2); OEM-A33-27 Ignition switch sense (IGSW, IG2 relay); OEM-A33-28 Shield ground (SLE2); OEM-A33-3 Stop light switch (ST1-); OEM-A33-7 Stop light switch (STP); OEM-A33-8 A/C pressure sensor (ACP); OEM-A34-11 DI injector confirmation (IJF1); OEM-A34-13 High-pressure fuel pump spill valve (FPF); OEM-A34-15 VVT cam sensor intake bank 2 (VV2+); OEM-A34-17 Knock sensor 2 (KNK2); OEM-A34-18 A/F ratio sensor (A1A-); OEM-A34-19 A/F ratio sensor (A1A+); OEM-A34-21 Heated oxygen sensor (OX1B, rear); OEM-A34-25 VVT cam sensor exhaust bank 2 (EV2+); OEM-A34-26 VVT cam sensor intake bank 1 (VV1+); OEM-A34-28 Knock sensor 1 (KNK1); OEM-A34-29 Shield ground (EKNK); OEM-A34-30 Shield ground (SLE1); OEM-A34-31 DI injector confirmation (IJF2); OEM-A34-32 High-pressure fuel pump spill valve (FPD); OEM-A34-35 Shield ground (SLE3); OEM-A34-9 Fuel pressure sensor (PR); OEM-A35-1 Canister vent valve (VPMP); OEM-A35-10 Fuel pump control monitor (DI); OEM-A35-15 Tachometer output (TACH); OEM-A35-17 ETCS relay (MCR); OEM-A35-19 Fuel pump control (FPC); OEM-A35-20 Canister pressure sensor (PPMP); OEM-A35-26 Starter signal (STA); OEM-A35-35 A/C clutch relay (AC); OEM-A35-5 Injector relay (IREL); OEM-A35-7 ETCS relay (+BM); OEM-A35-8 Leak detection pump (MPMP); OEM-A36-11 Purge valve (PRG); OEM-A36-14 Injector 1 direct (#1); OEM-A36-16 OCV intake bank 2 (OC2); OEM-A36-17 OCV intake bank 1 (OC1); OEM-A36-20 Oil temperature (OT); OEM-A36-23 Injector 4 direct (#4); OEM-A36-24 Injector 3 direct (#3); OEM-A36-25 Injector 2 direct (#2); OEM-A36-5 OCV exhaust bank 2 (OE2); OEM-A36-6 Heated oxygen sensor heater (HT1B); OEM-A36-7 OCV exhaust bank 1 (OE1)

Accepted (0)

CodeSubjectReasonBy

Notes

Fit check: needs add-on. Resolve these before building: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - No knock input; the stock knock sensor would be unused Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-A36 31: Ignition coil 3 (IGT3): no free ignition output on DTAFast T2i - OEM-A36 8: Ignition coil 4 (IGT4): no free ignition output on DTAFast T2i - OEM-A36 12: Injector 1 port (#10): no free injector output on DTAFast T2i - OEM-A36 22: Injector 2 port (#20): no free injector output on DTAFast T2i - OEM-A36 32: Injector 3 port (#30): no free injector output on DTAFast T2i - OEM-A36 13: Injector 4 port (#40): no free injector output on DTAFast T2i - OEM-A36 1: Throttle actuator motor - (M-): no free hbridge on DTAFast T2i - OEM-A36 2: Throttle actuator motor + (M+): no free hbridge on DTAFast T2i Not wired: - OEM-A34 26: VVT cam sensor intake bank 1 (VV1+): no free cam_hall/cam_vr/frequency_in input on DTAFast T2i - OEM-A34 25: VVT cam sensor exhaust bank 2 (EV2+): no free cam_hall/cam_vr/frequency_in input on DTAFast T2i - OEM-A34 15: VVT cam sensor intake bank 2 (VV2+): no free cam_hall/cam_vr/frequency_in input on DTAFast T2i - OEM-A34 28: Knock sensor 1 (KNK1): no free knock input on DTAFast T2i - OEM-A34 17: Knock sensor 2 (KNK2): no free knock input on DTAFast T2i - OEM-A36 14: Injector 1 direct (#1): no free injector output on DTAFast T2i - OEM-A36 25: Injector 2 direct (#2): no free injector output on DTAFast T2i - OEM-A36 24: Injector 3 direct (#3): no free injector output on DTAFast T2i - OEM-A36 23: Injector 4 direct (#4): no free injector output on DTAFast T2i - OEM-A33 28: Shield ground (SLE2): no shield pin on DTAFast T2i - OEM-A34 29: Shield ground (EKNK): no shield pin on DTAFast T2i - OEM-A34 30: Shield ground (SLE1): no shield pin on DTAFast T2i - OEM-A34 35: Shield ground (SLE3): no shield pin on DTAFast T2i - OEM-A33 27: Ignition switch sense (IGSW, IG2 relay): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); DTAFast T2i has no dedicated key-on input - OEM-A35 17: ETCS relay (MCR): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on DTAFast T2i - OEM-A35 35: A/C clutch relay (AC): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on DTAFast T2i - OEM-A35 5: Injector relay (IREL): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on DTAFast T2i - OEM-A35 7: ETCS relay (+BM): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on DTAFast T2i - OEM-A36 6: Heated oxygen sensor heater (HT1B): no free heater_low_side/low_side/ls_hs/hbridge on DTAFast T2i - OEM-A36 17: OCV intake bank 1 (OC1): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A36 7: OCV exhaust bank 1 (OE1): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A36 16: OCV intake bank 2 (OC2): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A36 5: OCV exhaust bank 2 (OE2): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A34 13: High-pressure fuel pump spill valve (FPF): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A34 32: High-pressure fuel pump spill valve (FPD): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A35 1: Canister vent valve (VPMP): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A35 19: Fuel pump control (FPC): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A35 8: Leak detection pump (MPMP): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A36 11: Purge valve (PRG): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-A35 15: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on DTAFast T2i - OEM-A34 21: Heated oxygen sensor (OX1B, rear): no free o2_narrowband/analog_0_5 on DTAFast T2i - OEM-A36 20: Oil temperature (OT): no free thermistor/analog_0_5 on DTAFast T2i - OEM-A33 8: A/C pressure sensor (ACP): no free analog_0_5 on DTAFast T2i - OEM-A34 11: DI injector confirmation (IJF1): no free analog_0_5 on DTAFast T2i - OEM-A34 31: DI injector confirmation (IJF2): no free analog_0_5 on DTAFast T2i - OEM-A34 9: Fuel pressure sensor (PR): no free analog_0_5 on DTAFast T2i - OEM-A35 10: Fuel pump control monitor (DI): no free analog_0_5 on DTAFast T2i - OEM-A35 20: Canister pressure sensor (PPMP): no free analog_0_5 on DTAFast T2i - OEM-A33 16: Neutral switch (NSW): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-A33 17: Starter signal (STSW2): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-A33 3: Stop light switch (ST1-): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-A33 7: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-A35 26: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-A34 18: A/F ratio sensor (A1A-): not classified in the library; wire by hand - OEM-A34 19: A/F ratio sensor (A1A+): not classified in the library; wire by hand

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docDTAFast T2i ECU wiring diagramhttps://cdn.shopify.com/s/files/1/0848/7508/4108/files/T2i_Wiring-Diagram.pdf?v=1728571341———
4vendor_docScion FR-S / Toyota 86 Repair Manual (2013) — FA20 ECM terminal pinout (SFI system)https://gt86.me/images/0/09/2013_Scion_FR-S_Repair_Manual.pdf———