RSX Type-S 2005-06 (K20Z1) → DTAFast T2i (auto)
RSX Type-S 2005-06 (K20Z1) — 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.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 8: read the Findings page before cutting any wire |
| Size of the job | 40 wires · 8 connectors · 6 part lines |
| Tools | 715131-1 · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 · 316836-1 |
| Order of work | 1. 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.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | T2I-C1-31 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | T2I-C1-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | T2I-C1-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-E-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | T2I-C1-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | T2I-C1-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-E-6 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-5V1-1 | T2I-C1-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-7 | T2I-C1-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-19 | T2I-C1-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-16 | T2I-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-15 | T2I-C1-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-E-8 | T2I-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-E-12 | T2I-C1-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-E-17 | T2I-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-E-18 | T2I-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-E-21 | T2I-C1-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-31 | T2I-C1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-28 | T2I-C1-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-30 | T2I-C1-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-29 | T2I-C1-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E-20 | T2I-C1-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B-8 | T2I-C1-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-17 | T2I-C1-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-13 | T2I-C1-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E-14 | T2I-C1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E-15 | T2I-C1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-18 | T2I-C1-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B-10 | T2I-C1-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
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 A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | T2I-C1-27 | T2I-C1-28 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | T2I-C1-31 | T2I-C1-13 | open (OL) | +12 V supply must not touch power ground | |
| 3 | T2I-C1-31 | T2I-C1-28 | open (OL) | +12 V supply must not touch sensor ground | |
| 4 | T2I-C1-13 | T2I-C1-27 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | T2I-C1-31 | T2I-C1-27 | open (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
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Knock sensor (KS) | — | — | — | — | — | — | — | — |
| 2 | Ignition power 2 (IGP2) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 (IGP1) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 (PG2) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 (PG1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Camshaft position B (CMP B) | — | — | — | — | — | — | — | — |
| 7 | Crank position sensor (CKP) | — | W20 | — | 0.5 | T2I-C1-19 | — | — | — |
| 8 | Logic ground 2 (LG2) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Logic ground 1 (LG1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | A/F sensor heater control (AFSHTC) | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Idle air control valve (IACV) | — | — | — | — | — | — | — | — |
| 13 | Ignition coil 4 (IGPLS4) | — | — | — | — | — | — | — | — |
| 14 | Ignition coil 3 (IGPLS3) | — | — | — | — | — | — | — | — |
| 15 | Ignition coil 2 (IGPLS2) | — | W23 | — | 0.5 | T2I-C1-6 | — | — | — |
| 16 | Ignition coil 1 (IGPLS1) | — | W22 | — | 0.5 | T2I-C1-3 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | Neutral position switch (NC) | — | W39 | — | 0.5 | T2I-C1-11 | — | — | — |
| 19 | Camshaft position A (CMP A) | — | W21 | — | 0.5 | T2I-C1-12 | — | — | — |
| 20 | Sensor 5V supply 2 (VCC2) | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor 5V supply 1 (VCC1) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | Sensor ground 2 (SG2) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Sensor ground 1 (SG1) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — |
| 26 | — | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | A/F sensor - (AFS-, wideband Vs) | — | W30 | — | 0.5 | T2I-C1-2 | — | — | — |
| 29 | Throttle position sensor (TPS) | — | W32 | — | 0.5 | T2I-C1-22 | — | — | — |
| 30 | Manifold absolute pressure (MAP) | — | W31 | — | 0.5 | T2I-C1-20 | — | — | — |
| 31 | A/F sensor + (AFS+, wideband Ip) | — | W29 | — | 0.5 | T2I-C1-5 | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTC oil control solenoid (+) | — | — | — | — | — | — | — | — |
| 2 | Injector 4 (INJ4) | — | — | — | — | — | — | — | — |
| 3 | Injector 3 (INJ3) | — | — | — | — | — | — | — | — |
| 4 | Injector 2 (INJ2) | — | — | — | — | — | — | — | — |
| 5 | Injector 1 (INJ1) | — | — | — | — | — | — | — | — |
| 6 | VTEC solenoid (VTS) | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor (ECT) | — | W34 | — | 0.5 | T2I-C1-24 | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Alternator L signal (ALTL) | — | W40 | — | 0.5 | T2I-C1-30 | — | — | — |
| 11 | VTEC oil pressure switch (VTPSW) | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal (ALTF) | — | W36 | — | 0.5 | T2I-C1-25 | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor (IAT) | — | W35 | — | 0.5 | T2I-C1-32 | — | — | — |
| 18 | Alternator control (ALTC) | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve (PCS) | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
OEM-E
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | Reverse lockout solenoid (RVS, Type-S) | — | — | — | — | — | — | — | — |
| 4 | Logic ground 3 (LG3) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Sensor ground 3 (SG3) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor 5V supply 3 (VCC3) | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Main relay control (MRLY) | — | W24 | — | 0.5 | T2I-C1-1 | — | — | — |
| 9 | A/F sensor heater relay control (AFSHTCR) | — | — | — | — | — | — | — | — |
| 10 | Ignition switch signal (IG1) | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Radiator fan control (FANC) | — | W25 | — | 0.5 | T2I-C1-10 | — | — | — |
| 13 | Multiplex communication (SEFMJ) | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor (FTP) | — | W37 | — | 0.5 | T2I-C1-33 | — | — | — |
| 15 | Electrical load detector (ELD) | — | W38 | — | 0.5 | T2I-C1-34 | — | — | — |
| 16 | Power steering pressure switch (PSPSW) | — | — | — | — | — | — | — | — |
| 17 | Immobilizer fuel pump relay (IMO FPR) | — | W26 | — | 0.5 | T2I-C1-18 | — | — | — |
| 18 | A/C clutch relay (ACC) | — | W27 | — | 0.5 | T2I-C1-26 | — | — | — |
| 19 | Evap vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 20 | Secondary heated O2 sensor (SHO2S) | — | W33 | — | 0.5 | T2I-C1-23 | — | — | — |
| 21 | Secondary O2 heater control (SO2SHTC) | — | W28 | — | 0.5 | T2I-C1-15 | — | — | — |
| 22 | Brake switch (BKSW) | — | — | — | — | — | — | — | — |
| 23 | K-line (diagnostic) | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
| 25 | Engine speed pulse / tacho (NEP) | — | — | — | — | — | — | — | — |
| 26 | Vehicle speed output (VSSOUT) | — | — | — | — | — | — | — | — |
| 27 | Immobilizer code (IMOCD) | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | Service check signal (SCS) | — | — | — | — | — | — | — | — |
| 30 | Write enable signal (WEN) | — | — | — | — | — | — | — | — |
| 31 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | T2I-C1-28 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | T2I-C1-29 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-A-24 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-A-23 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-2 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A-3 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | T2I-C1-31 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W16 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-E-6 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | T2I-C1-27 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-8 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-9 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E-4 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | T2I-C1-13 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | T2I-C1-14 | — | — | — |
T2I-C1
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM 1 | — | W24 | — | 0.5 | OEM-E-8 | — | — | — |
| 2 | Lambda Nernst Voltage | — | W30 | — | 0.5 | OEM-A-28 | — | — | — |
| 3 | Coil 1 | — | W22 | — | 0.5 | OEM-A-16 | — | — | — |
| 4 | Lambda VGND | — | — | — | — | — | — | — | — |
| 5 | Lambda Pump Current | — | W29 | — | 0.5 | OEM-A-31 | — | — | — |
| 6 | Coil 2 | — | W23 | — | 0.5 | OEM-A-15 | — | — | — |
| 7 | Lambda Trim Resistor | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | PWM 2 | — | W25 | — | 0.5 | OEM-E-12 | — | — | — |
| 11 | Digital 1 | — | W39 | — | 0.5 | OEM-A-18 | — | — | — |
| 12 | Wheel 1 | — | W21 | — | 0.5 | OEM-A-19 | — | — | — |
| 13 | Power Ground 1 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Power Ground 2 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | Lambda Heater Negative | — | W28 | — | 0.5 | OEM-E-21 | — | — | — |
| 16 | CAN High | — | — | — | — | — | — | — | — |
| 17 | CAN Low | — | — | — | — | — | — | — | — |
| 18 | PWM 3 | — | W26 | — | 0.5 | OEM-E-17 | — | — | — |
| 19 | Crank | — | W20 | — | 0.5 | OEM-A-7 | — | — | — |
| 20 | Analogue 1 | — | W31 | — | 0.5 | OEM-A-30 | — | — | — |
| 21 | Permanent 12v | — | — | — | — | — | — | — | — |
| 22 | Analogue 2 | — | W32 | — | 0.5 | OEM-A-29 | — | — | — |
| 23 | Analogue 3 | — | W33 | — | 0.5 | OEM-E-20 | — | — | — |
| 24 | Thermistor 1 | — | W34 | — | 0.5 | OEM-B-8 | — | — | — |
| 25 | Analogue 4 | — | W36 | — | 0.5 | OEM-B-13 | — | — | — |
| 26 | PWM 4 | — | W27 | — | 0.5 | OEM-E-18 | — | — | — |
| 27 | 5v Output | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 28 | Sensor Ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 29 | Sensor Ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Digital 2 | — | W40 | — | 0.5 | OEM-B-10 | — | — | — |
| 31 | Ignition 12v In | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 32 | Thermistor 2 | — | W35 | — | 0.5 | OEM-B-17 | — | — | — |
| 33 | Analogue 5 | — | W37 | — | 0.5 | OEM-E-14 | — | — | — |
| 34 | Analogue 6 | — | W38 | — | 0.5 | OEM-E-15 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Knock sensor (KS) | knock_in | — | — | — | single_source | |
| OEM-A-10 | A/F sensor heater control (AFSHTC) | low_side_out | — | — | — | single_source | |
| OEM-A-12 | Idle air control valve (IACV) | low_side_out | — | — | — | single_source | |
| OEM-A-13 | Ignition coil 4 (IGPLS4) | ignition_out | — | — | — | single_source | |
| OEM-A-14 | Ignition coil 3 (IGPLS3) | ignition_out | — | — | — | single_source | |
| OEM-A-15 | Ignition coil 2 (IGPLS2) | ignition_out | T2I-C1-6 | Coil 2 | ignition_out | single_source | |
| OEM-A-16 | Ignition coil 1 (IGPLS1) | ignition_out | T2I-C1-3 | Coil 1 | ignition_out | single_source | |
| OEM-A-18 | Neutral position switch (NC) | digital_in | T2I-C1-11 | Digital 1 | digital_in | single_source | |
| OEM-A-19 | Camshaft position A (CMP A) | trigger_in | T2I-C1-12 | Wheel 1 | digital_in | single_source | |
| OEM-A-2 | Ignition power 2 (IGP2) | power_in | T2I-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-A-20 | Sensor 5V supply 2 (VCC2) | vref | T2I-C1-27 | 5v Output | vref | single_source | |
| OEM-A-21 | Sensor 5V supply 1 (VCC1) | vref | T2I-C1-27 | 5v Output | vref | single_source | |
| OEM-A-23 | Sensor ground 2 (SG2) | sensor_ground | T2I-C1-28 + T2I-C1-29 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-24 | Sensor ground 1 (SG1) | sensor_ground | T2I-C1-28 + T2I-C1-29 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-28 | A/F sensor - (AFS-, wideband Vs) | wb_vs | T2I-C1-2 | Lambda Nernst Voltage | wb_vs | single_source | |
| OEM-A-29 | Throttle position sensor (TPS) | analog_in | T2I-C1-22 | Analogue 2 | analog_in | single_source | |
| OEM-A-3 | Ignition power 1 (IGP1) | power_in | T2I-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-A-30 | Manifold absolute pressure (MAP) | analog_in | T2I-C1-20 | Analogue 1 | analog_in | single_source | |
| OEM-A-31 | A/F sensor + (AFS+, wideband Ip) | wb_ip | T2I-C1-5 | Lambda Pump Current | wb_ip | single_source | |
| OEM-A-4 | Power ground 2 (PG2) | ground | T2I-C1-13 + T2I-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-A-5 | Power ground 1 (PG1) | ground | T2I-C1-13 + T2I-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-A-6 | Camshaft position B (CMP B) | trigger_in | — | — | — | single_source | |
| OEM-A-7 | Crank position sensor (CKP) | trigger_in | T2I-C1-19 | Crank | trigger_in | single_source | |
| OEM-A-8 | Logic ground 2 (LG2) | ground | T2I-C1-13 + T2I-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-A-9 | Logic ground 1 (LG1) | ground | T2I-C1-13 + T2I-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-B-1 | VTC oil control solenoid (+) | low_side_out | — | — | — | single_source | |
| OEM-B-10 | Alternator L signal (ALTL) | digital_in | T2I-C1-30 | Digital 2 | digital_in | single_source | |
| OEM-B-11 | VTEC oil pressure switch (VTPSW) | digital_in | — | — | — | single_source | |
| OEM-B-13 | Alternator FR signal (ALTF) | analog_in | T2I-C1-25 | Analogue 4 | analog_in | single_source | |
| OEM-B-17 | Intake air temp sensor (IAT) | temp_in | T2I-C1-32 | Thermistor 2 | temp_in | single_source | |
| OEM-B-18 | Alternator control (ALTC) | low_side_out | — | — | — | single_source | |
| OEM-B-2 | Injector 4 (INJ4) | injector_out | — | — | — | single_source | |
| OEM-B-21 | Evap canister purge valve (PCS) | low_side_out | — | — | — | single_source | |
| OEM-B-3 | Injector 3 (INJ3) | injector_out | — | — | — | single_source | |
| OEM-B-4 | Injector 2 (INJ2) | injector_out | — | — | — | single_source | |
| OEM-B-5 | Injector 1 (INJ1) | injector_out | — | — | — | single_source | |
| OEM-B-6 | VTEC solenoid (VTS) | low_side_out | — | — | — | single_source | |
| OEM-B-8 | Coolant temp sensor (ECT) | temp_in | T2I-C1-24 | Thermistor 1 | temp_in | single_source | |
| OEM-E-10 | Ignition switch signal (IG1) | digital_in | — | — | — | single_source | |
| OEM-E-12 | Radiator fan control (FANC) | low_side_out | T2I-C1-10 | PWM 2 | low_side_out | single_source | |
| OEM-E-13 | Multiplex communication (SEFMJ) | serial | — | — | — | single_source | |
| OEM-E-14 | Fuel tank pressure sensor (FTP) | analog_in | T2I-C1-33 | Analogue 5 | analog_in | single_source | |
| OEM-E-15 | Electrical load detector (ELD) | analog_in | T2I-C1-34 | Analogue 6 | analog_in | single_source | |
| OEM-E-16 | Power steering pressure switch (PSPSW) | digital_in | — | — | — | single_source | |
| OEM-E-17 | Immobilizer fuel pump relay (IMO FPR) | low_side_out | T2I-C1-18 | PWM 3 | low_side_out | single_source | |
| OEM-E-18 | A/C clutch relay (ACC) | low_side_out | T2I-C1-26 | PWM 4 | low_side_out | single_source | |
| OEM-E-19 | Evap vent shut valve (VSV) | low_side_out | — | — | — | single_source | |
| OEM-E-20 | Secondary heated O2 sensor (SHO2S) | lambda_nb_in | T2I-C1-23 | Analogue 3 | analog_in | single_source | |
| OEM-E-21 | Secondary O2 heater control (SO2SHTC) | low_side_out | T2I-C1-15 | Lambda Heater Negative | low_side_out | single_source | |
| OEM-E-22 | Brake switch (BKSW) | digital_in | — | — | — | single_source | |
| OEM-E-23 | K-line (diagnostic) | serial | — | — | — | single_source | |
| OEM-E-25 | Engine speed pulse / tacho (NEP) | tacho_out | — | — | — | single_source | |
| OEM-E-26 | Vehicle speed output (VSSOUT) | tacho_out | — | — | — | single_source | |
| OEM-E-27 | Immobilizer code (IMOCD) | — | — | — | — | single_source | |
| OEM-E-29 | Service check signal (SCS) | — | — | — | — | single_source | |
| OEM-E-3 | Reverse lockout solenoid (RVS, Type-S) | low_side_out | — | — | — | single_source | |
| OEM-E-30 | Write enable signal (WEN) | — | — | — | — | single_source | |
| OEM-E-31 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-E-4 | Logic ground 3 (LG3) | ground | T2I-C1-13 + T2I-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-E-5 | Sensor ground 3 (SG3) | sensor_ground | T2I-C1-28 + T2I-C1-29 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-E-6 | Sensor 5V supply 3 (VCC3) | vref | T2I-C1-27 | 5v Output | vref | single_source | |
| OEM-E-8 | Main relay control (MRLY) | low_side_out | T2I-C1-1 | PWM 1 | low_side_out | single_source | |
| OEM-E-9 | A/F sensor heater relay control (AFSHTCR) | low_side_out | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | no route | Ignition power 2 (IGP2) | — | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | no route | Ignition power 1 (IGP1) | — | |
| W3 | SP-14V-1 | T2I-C1-31 | 0.85 | no route | Ignition 12v In | — | |
| W4 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 (PG2) | — | |
| W5 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 (PG1) | — | |
| W6 | OEM-A-8 | SP-GND-1 | 0.85 | no route | Logic ground 2 (LG2) | — | |
| W7 | OEM-A-9 | SP-GND-1 | 0.85 | no route | Logic ground 1 (LG1) | — | |
| W8 | OEM-E-4 | SP-GND-1 | 0.85 | no route | Logic ground 3 (LG3) | — | |
| W9 | SP-GND-1 | T2I-C1-13 | 0.85 | no route | Power Ground 1 | — | |
| W10 | SP-GND-1 | T2I-C1-14 | 0.85 | no route | Power Ground 2 | — | |
| W11 | OEM-A-23 | SP-0V-1 | 0.5 | no route | Sensor ground 2 (SG2) | — | |
| W12 | OEM-A-24 | SP-0V-1 | 0.5 | no route | Sensor ground 1 (SG1) | — | |
| W13 | OEM-E-5 | SP-0V-1 | 0.5 | no route | Sensor ground 3 (SG3) | — | |
| W14 | SP-0V-1 | T2I-C1-28 | 0.5 | no route | Sensor Ground | — | |
| W15 | SP-0V-1 | T2I-C1-29 | 0.5 | no route | Sensor Ground | — | |
| W16 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 (VCC2) | — | |
| W17 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (VCC1) | — | |
| W18 | OEM-E-6 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 3 (VCC3) | — | |
| W19 | SP-5V1-1 | T2I-C1-27 | 0.5 | no route | 5v Output | — | |
| W20 | OEM-A-7 | T2I-C1-19 | 0.5 | no route | Crank position sensor (CKP) | — | |
| W21 | OEM-A-19 | T2I-C1-12 | 0.5 | no route | Camshaft position A (CMP A) | — | |
| W22 | OEM-A-16 | T2I-C1-3 | 0.5 | no route | Ignition coil 1 (IGPLS1) | — | |
| W23 | OEM-A-15 | T2I-C1-6 | 0.5 | no route | Ignition coil 2 (IGPLS2) | — | |
| W24 | OEM-E-8 | T2I-C1-1 | 0.5 | no route | Main relay control (MRLY) | — | |
| W25 | OEM-E-12 | T2I-C1-10 | 0.5 | no route | Radiator fan control (FANC) | — | |
| W26 | OEM-E-17 | T2I-C1-18 | 0.5 | no route | Immobilizer fuel pump relay (IMO FPR) | — | |
| W27 | OEM-E-18 | T2I-C1-26 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W28 | OEM-E-21 | T2I-C1-15 | 0.5 | no route | Secondary O2 heater control (SO2SHTC) | — | |
| W29 | OEM-A-31 | T2I-C1-5 | 0.5 | no route | A/F sensor + (AFS+, wideband Ip) | — | |
| W30 | OEM-A-28 | T2I-C1-2 | 0.5 | no route | A/F sensor - (AFS-, wideband Vs) | — | |
| W31 | OEM-A-30 | T2I-C1-20 | 0.5 | no route | Manifold absolute pressure (MAP) | — | |
| W32 | OEM-A-29 | T2I-C1-22 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W33 | OEM-E-20 | T2I-C1-23 | 0.5 | no route | Secondary heated O2 sensor (SHO2S) | — | |
| W34 | OEM-B-8 | T2I-C1-24 | 0.5 | no route | Coolant temp sensor (ECT) | — | |
| W35 | OEM-B-17 | T2I-C1-32 | 0.5 | no route | Intake air temp sensor (IAT) | — | |
| W36 | OEM-B-13 | T2I-C1-25 | 0.5 | no route | Alternator FR signal (ALTF) | — | |
| W37 | OEM-E-14 | T2I-C1-33 | 0.5 | no route | Fuel tank pressure sensor (FTP) | — | |
| W38 | OEM-E-15 | T2I-C1-34 | 0.5 | no route | Electrical load detector (ELD) | — | |
| W39 | OEM-A-18 | T2I-C1-11 | 0.5 | no route | Neutral position switch (NC) | — | |
| W40 | OEM-B-10 | T2I-C1-30 | 0.5 | no route | Alternator L signal (ALTL) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 1318682-6 | TE | K-series ECU harness plug A (040-3 HD plug assy, 31P) | 1.000 | ea |
| connector | 353029-1 | TE | K-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P) | 1.000 | ea |
| connector | 353826-1 | TE | K-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P) | 1.000 | ea |
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 27.000 | ea |
| terminal | 316836-1 | TE | Multilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²) | 34.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (15)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | PHYS_REQUIRED_OPEN | T2I-C1-21 | T2I-C1-21 "Permanent 12v" is required but not wired. |
| error | REQUIRED_UNMAPPED | OEM-A-13 | Required OEM function "Ignition coil 4 (IGPLS4)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A-14 | Required OEM function "Ignition coil 3 (IGPLS3)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A-6 | Required OEM function "Camshaft position B (CMP B)" (trigger_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-2 | Required OEM function "Injector 4 (INJ4)" (injector_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-3 | Required OEM function "Injector 3 (INJ3)" (injector_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-4 | Required OEM function "Injector 2 (INJ2)" (injector_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-5 | Required OEM function "Injector 1 (INJ1)" (injector_out) is not connected to the new ECU. |
| warn | DATASET_GAP | RSX ECU A | 6 of 31 cavities on RSX ECU A have no pin data (11,17,22,25,26,27). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU B | 11 of 24 cavities on RSX ECU B have no pin data (7,9,12,14,15,16,19,20,22,23,24). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU E | 6 of 31 cavities on RSX ECU E have no pin data (1,2,7,11,24,28). Anything there is invisible to these checks. |
| warn | DATASET_GAP | T2i C1 | 2 of 34 cavities on T2i C1 have no pin data (8,9). Anything there is invisible to these checks. |
| warn | NET_FAMILY | OEM-A-19 ↔ T2I-C1-12 | OEM-A-19 "Camshaft position A (CMP A)" [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. |
| warn | SUPPLY_GROUP | OEM-A-20 + OEM-A-21 + OEM-E-6 + SP-5V1-1 + T2I-C1-27 | Supplies meant to stay independent share one net: OEM-A-20 [k_vcc2], OEM-A-21 [k_vcc1], OEM-E-6 [k_vcc3]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all. |
| info | UNMAPPED | OEM | 22 optional OEM pins are not mapped: OEM-A-1 Knock sensor (KS); OEM-A-10 A/F sensor heater control (AFSHTC); OEM-A-12 Idle air control valve (IACV); OEM-B-1 VTC oil control solenoid (+); OEM-B-11 VTEC oil pressure switch (VTPSW); OEM-B-18 Alternator control (ALTC); OEM-B-21 Evap canister purge valve (PCS); OEM-B-6 VTEC solenoid (VTS); OEM-E-10 Ignition switch signal (IG1); OEM-E-13 Multiplex communication (SEFMJ); OEM-E-16 Power steering pressure switch (PSPSW); OEM-E-19 Evap vent shut valve (VSV); OEM-E-22 Brake switch (BKSW); OEM-E-23 K-line (diagnostic); OEM-E-25 Engine speed pulse / tacho (NEP); OEM-E-26 Vehicle speed output (VSSOUT); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-3 Reverse lockout solenoid (RVS, Type-S); OEM-E-30 Write enable signal (WEN); OEM-E-31 Malfunction indicator lamp (MIL); OEM-E-9 A/F sensor heater relay control (AFSHTCR) |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
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-A 6: Camshaft position B (CMP B): no free cam_hall/cam_vr/frequency_in input on DTAFast T2i - OEM-A 14: Ignition coil 3 (IGPLS3): no free ignition output on DTAFast T2i - OEM-A 13: Ignition coil 4 (IGPLS4): no free ignition output on DTAFast T2i - OEM-B 5: Injector 1 (INJ1): no free injector output on DTAFast T2i - OEM-B 4: Injector 2 (INJ2): no free injector output on DTAFast T2i - OEM-B 3: Injector 3 (INJ3): no free injector output on DTAFast T2i - OEM-B 2: Injector 4 (INJ4): no free injector output on DTAFast T2i - T2I-C1 21: Permanent 12v: required by DTAFast T2i but no stock pin feeds it; wire by hand Not wired: - OEM-A 1: Knock sensor (KS): no free knock input on DTAFast T2i - OEM-E 10: Ignition switch signal (IG1): 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-E 9: A/F sensor heater relay control (AFSHTCR): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on DTAFast T2i - OEM-A 10: A/F sensor heater control (AFSHTC): no free heater_low_side/low_side/ls_hs/hbridge on DTAFast T2i - OEM-A 12: Idle air control valve (IACV): no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on DTAFast T2i - OEM-B 6: VTEC solenoid (VTS): no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on DTAFast T2i - OEM-B 1: VTC oil control solenoid (+): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-B 18: Alternator control (ALTC): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-B 21: Evap canister purge valve (PCS): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-E 19: Evap vent shut valve (VSV): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-E 3: Reverse lockout solenoid (RVS, Type-S): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-E 31: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on DTAFast T2i - OEM-E 25: Engine speed pulse / tacho (NEP): no free tacho/frequency_out/low_side/ls_hs on DTAFast T2i - OEM-E 26: Vehicle speed output (VSSOUT): no free frequency_out/tacho/low_side/ls_hs on DTAFast T2i - OEM-B 11: VTEC oil pressure switch (VTPSW): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-E 16: Power steering pressure switch (PSPSW): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-E 22: Brake switch (BKSW): no free switch_in/frequency_in/analog_0_5 on DTAFast T2i - OEM-E 13: Multiplex communication (SEFMJ): no free k_line on DTAFast T2i - OEM-E 23: K-line (diagnostic): no free k_line on DTAFast T2i - OEM-E 27: Immobilizer code (IMOCD): not classified in the library; wire by hand - OEM-E 29: Service check signal (SCS): not classified in the library; wire by hand - OEM-E 30: Write enable signal (WEN): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | DTAFast T2i ECU wiring diagram | https://cdn.shopify.com/s/files/1/0848/7508/4108/files/T2i_Wiring-Diagram.pdf?v=1728571341 | — | — | — |
| 3 | forum | FFS TechNet: K-series 02-06 RSX ECU pin diagram (Helm) | https://ff-squad.com/technet2/k-series-02-06-rsx-ecu-pin-diagram/ | archive | 2026-10-05 | b2b85002666e |