Scion FR-S (ZN6, FA20) → Motorsport Electronics ME221 (auto)
Scion FR-S (ZN6, FA20) — Motorsport Electronics — ME221
⚠ 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 | 7: read the Findings page before cutting any wire |
| Size of the job | 64 wires · 9 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| 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-A33-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A34-6 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | ME221-C1-15 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | ME221-C1-64 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A33-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A34-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A34-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A34-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A36-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A36-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | ME221-C1-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | ME221-C1-61 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | ME221-C1-89 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | ME221-C1-90 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A33-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A34-27 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A35-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A35-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A36-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | ME221-C1-52 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | ME221-C1-84 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A34-34 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A35-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A35-22 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A36-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | SP-5V1-1 | ME221-C1-45 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A34-16 | ME221-C1-81 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A34-14 | ME221-C1-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A34-26 | ME221-C1-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A34-28 | ME221-C1-53 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A36-21 | ME221-C1-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A36-10 | ME221-C1-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A36-31 | ME221-C1-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A36-8 | ME221-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A36-12 | ME221-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A36-14 | ME221-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A36-22 | ME221-C1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A36-25 | ME221-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A36-24 | ME221-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A36-32 | ME221-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A36-13 | ME221-C1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A36-23 | ME221-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A36-1 | ME221-C1-67 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A36-2 | ME221-C1-68 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A35-13 | ME221-C1-73 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A35-12 | ME221-C1-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A35-11 | ME221-C1-74 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A33-20 | ME221-C1-44 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A35-17 | ME221-C1-69 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A35-35 | ME221-C1-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A35-5 | ME221-C1-70 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A35-7 | ME221-C1-71 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A34-5 | ME221-C1-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A35-15 | ME221-C1-79 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A33-22 | ME221-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A34-20 | ME221-C1-56 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-A35-31 | ME221-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-A36-28 | ME221-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-A36-30 | ME221-C1-86 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-A33-12 | ME221-C1-57 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-A33-14 | ME221-C1-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-A33-15 | ME221-C1-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-A33-19 | ME221-C1-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-A33-18 | ME221-C1-51 | 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 | ME221-C1-15 | ME221-C1-10 | open (OL) | +12 V supply must not touch power ground | |
| 2 | ME221-C1-15 | ME221-C1-52 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | ME221-C1-10 | ME221-C1-45 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | ME221-C1-15 | ME221-C1-45 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | ME221-C1-52 | ME221-C1-45 | open (OL) | sensor ground 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
ME221-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | COIL 4 | — | W34 | — | 0.5 | OEM-A36-8 | — | — | — |
| 10 | GROUND CHASSIS | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | LOW SIDE 2 | — | W46 | — | 0.5 | OEM-A35-12 | — | — | — |
| 14 | LSU +12V | — | — | — | — | — | — | — | — |
| 15 | IGN +12V | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | LSU HEATER -VE | — | W53 | — | 0.5 | OEM-A34-5 | — | — | — |
| 17 | ANA VOLT 3 | — | W57 | — | 0.5 | OEM-A35-31 | — | — | — |
| 18 | ANA VOLT 4 | — | W58 | — | 0.5 | OEM-A36-28 | — | — | — |
| 19 | LSU UN | — | — | — | — | — | — | — | — |
| 2 | COIL 3 | — | W33 | — | 0.5 | OEM-A36-31 | — | — | — |
| 20 | LSU VM | — | — | — | — | — | — | — | — |
| 21 | CAN 1 HIGH | — | W63 | — | 0.5 | OEM-A33-19 | — | — | — |
| 22 | CAM A VR+ | — | W28 | — | 0.5 | OEM-A34-14 | — | — | — |
| 23 | CAM A VR- | — | W29 | — | 0.5 | OEM-A34-26 | — | — | — |
| 24 | SERIAL 1 GROUND | — | — | — | — | — | — | — | — |
| 25 | SERIAL 1 TX | — | — | — | — | — | — | — | — |
| 26 | ANA VOLT 1 | — | W55 | — | 0.5 | OEM-A33-22 | — | — | — |
| 3 | INJECTOR 4 | — | W38 | — | 0.5 | OEM-A36-25 | — | — | — |
| 3 | INJECTOR 4 | — | W42 | — | 0.5 | OEM-A36-23 | — | — | — |
| 31 | COIL 2 | — | W32 | — | 0.5 | OEM-A36-10 | — | — | — |
| 32 | COIL 1 | — | W31 | — | 0.5 | OEM-A36-21 | — | — | — |
| 33 | INJECTOR 3 | — | W37 | — | 0.5 | OEM-A36-22 | — | — | — |
| 33 | INJECTOR 3 | — | W41 | — | 0.5 | OEM-A36-13 | — | — | — |
| 35 | USB D+ | — | — | — | — | — | — | — | — |
| 36 | USB D- | — | — | — | — | — | — | — | — |
| 37 | LOW SIDE RELAY 11 | — | — | — | — | — | — | — | — |
| 38 | USB VBUS | — | — | — | — | — | — | — | — |
| 39 | LOW SIDE 6 | — | W50 | — | 0.5 | OEM-A35-35 | — | — | — |
| 4 | INJECTOR 2 | — | W36 | — | 0.5 | OEM-A36-14 | — | — | — |
| 4 | INJECTOR 2 | — | W40 | — | 0.5 | OEM-A36-32 | — | — | — |
| 41 | USB GROUND | — | — | — | — | — | — | — | — |
| 42 | LOW SIDE RELAY 12 | — | — | — | — | — | — | — | — |
| 43 | LOW SIDE RELAY 14 | — | — | — | — | — | — | — | — |
| 44 | LOW SIDE 4 | — | W48 | — | 0.5 | OEM-A33-20 | — | — | — |
| 45 | 5V REF | — | W26 | — | 0.5 | SP-5V1-1 | — | — | — |
| 46 | 5V REF | — | — | — | — | — | — | — | — |
| 49 | LSU IA | — | — | — | — | — | — | — | — |
| 50 | LSU IP | — | — | — | — | — | — | — | — |
| 51 | CAN 1 LOW | — | W64 | — | 0.5 | OEM-A33-18 | — | — | — |
| 52 | SENSORS GROUND | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 53 | KNOCK 1 SIGNAL | — | W30 | — | 0.5 | OEM-A34-28 | — | — | — |
| 55 | SERIAL 1 RX | — | — | — | — | — | — | — | — |
| 56 | ANA VOLT 2 | — | W56 | — | 0.5 | OEM-A34-20 | — | — | — |
| 57 | ANA TEMP 2 | — | W60 | — | 0.5 | OEM-A33-12 | — | — | — |
| 6 | DIG_IN 1 | — | W61 | — | 0.5 | OEM-A33-14 | — | — | — |
| 61 | GROUND | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 63 | INJECTOR 1 | — | W35 | — | 0.5 | OEM-A36-12 | — | — | — |
| 63 | INJECTOR 1 | — | W39 | — | 0.5 | OEM-A36-24 | — | — | — |
| 64 | VBAT | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 67 | Stepper 1 / A1 | — | W43 | — | 0.5 | OEM-A36-1 | — | — | — |
| 68 | Stepper 2 / A2 | — | W44 | — | 0.5 | OEM-A36-2 | — | — | — |
| 69 | LOW SIDE 5 | — | W49 | — | 0.5 | OEM-A35-17 | — | — | — |
| 7 | DIG_IN 2 | — | W62 | — | 0.5 | OEM-A33-15 | — | — | — |
| 70 | Stepper 3 / B1 | — | W51 | — | 0.5 | OEM-A35-5 | — | — | — |
| 71 | Stepper 4 / B2 | — | W52 | — | 0.5 | OEM-A35-7 | — | — | — |
| 72 | LOW SIDE RELAY 13 | — | — | — | — | — | — | — | — |
| 73 | LOW SIDE 1 | — | W45 | — | 0.5 | OEM-A35-13 | — | — | — |
| 74 | LOW SIDE 3 | — | W47 | — | 0.5 | OEM-A35-11 | — | — | — |
| 76 | 5V REF | — | — | — | — | — | — | — | — |
| 79 | TACHOMETER | — | W54 | — | 0.5 | OEM-A35-15 | — | — | — |
| 80 | CRANK VR- | — | — | — | — | — | — | — | — |
| 81 | CRANK VR+ | — | W27 | — | 0.5 | OEM-A34-16 | — | — | — |
| 84 | Sensor Ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 86 | ANA TEMP 1 | — | W59 | — | 0.5 | OEM-A36-30 | — | — | — |
| 89 | GROUND | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 90 | GROUND | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-A33
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU power (+B2, main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 12 | Intake air temperature (THA, in MAF) | — | W60 | — | 0.5 | ME221-C1-57 | — | — | — |
| 14 | Starter signal (STSW2) | — | W61 | — | 0.5 | ME221-C1-6 | — | — | — |
| 15 | Clutch switch (CLSW) | — | W62 | — | 0.5 | ME221-C1-7 | — | — | — |
| 16 | Neutral switch (NSW) | — | — | — | — | — | — | — | — |
| 17 | Starter signal (STSW2) | — | — | — | — | — | — | — | — |
| 18 | CAN low (CANL) | — | W64 | — | 0.5 | ME221-C1-51 | — | — | — |
| 19 | CAN high (CANH) | — | W63 | — | 0.5 | ME221-C1-21 | — | — | — |
| 2 | Battery constant (BATT, memory) | — | — | — | — | — | — | — | — |
| 20 | Blower relay (HB) | — | W48 | — | 0.5 | ME221-C1-44 | — | — | — |
| 22 | Mass air flow (VG) | — | W55 | — | 0.5 | ME221-C1-26 | — | — | — |
| 27 | Ignition switch sense (IGSW, IG2 relay) | — | — | — | — | — | — | — | — |
| 28 | Shield ground (SLE2) | — | — | — | — | — | — | — | — |
| 29 | MAF sensor ground (E2G) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Stop light switch (ST1-) | — | — | — | — | — | — | — | — |
| 4 | Power ground (EC) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 7 | Stop light switch (STP) | — | — | — | — | — | — | — | — |
| 8 | A/C pressure sensor (ACP) | — | — | — | — | — | — | — | — |
OEM-A34
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Power ground (E03) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | DI injector confirmation (IJF1) | — | — | — | — | — | — | — | — |
| 13 | High-pressure fuel pump spill valve (FPF) | — | — | — | — | — | — | — | — |
| 14 | VVT cam sensor exhaust bank 1 (EV1+) | — | W28 | — | 0.5 | ME221-C1-22 | — | — | — |
| 15 | VVT cam sensor intake bank 2 (VV2+) | — | — | — | — | — | — | — | — |
| 16 | Crank position (NE+) | — | W27 | — | 0.5 | ME221-C1-81 | — | — | — |
| 17 | Knock sensor 2 (KNK2) | — | — | — | — | — | — | — | — |
| 18 | A/F ratio sensor (A1A-) | — | — | — | — | — | — | — | — |
| 19 | A/F ratio sensor (A1A+) | — | — | — | — | — | — | — | — |
| 2 | Power ground (E04) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 20 | Manifold absolute pressure (PIM) | — | W56 | — | 0.5 | ME221-C1-56 | — | — | — |
| 21 | Heated oxygen sensor (OX1B, rear) | — | — | — | — | — | — | — | — |
| 25 | VVT cam sensor exhaust bank 2 (EV2+) | — | — | — | — | — | — | — | — |
| 26 | VVT cam sensor intake bank 1 (VV1+) | — | W29 | — | 0.5 | ME221-C1-23 | — | — | — |
| 27 | Crank position return (NE-) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Knock sensor 1 (KNK1) | — | W30 | — | 0.5 | ME221-C1-53 | — | — | — |
| 29 | Shield ground (EKNK) | — | — | — | — | — | — | — | — |
| 3 | Power ground (E05) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Shield ground (SLE1) | — | — | — | — | — | — | — | — |
| 31 | DI injector confirmation (IJF2) | — | — | — | — | — | — | — | — |
| 32 | High-pressure fuel pump spill valve (FPD) | — | — | — | — | — | — | — | — |
| 34 | OCV power source (VCV, 5V) | — | W22 | — | 0.5 | SP-5V1-1 | — | — | — |
| 35 | Shield ground (SLE3) | — | — | — | — | — | — | — | — |
| 5 | A/F ratio sensor heater (HA1A) | — | W53 | — | 0.5 | ME221-C1-16 | — | — | — |
| 6 | ECU power (+B, main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Fuel pressure sensor (PR) | — | — | — | — | — | — | — | — |
OEM-A35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Canister vent valve (VPMP) | — | — | — | — | — | — | — | — |
| 10 | Fuel pump control monitor (DI) | — | — | — | — | — | — | — | — |
| 11 | Cooling fan relay 3 (FAN1) | — | W47 | — | 0.5 | ME221-C1-74 | — | — | — |
| 12 | Cooling fan relay 2 (FAN2) | — | W46 | — | 0.5 | ME221-C1-12 | — | — | — |
| 13 | EFI main relay 1 (SSHUT) | — | W45 | — | 0.5 | ME221-C1-73 | — | — | — |
| 15 | Tachometer output (TACH) | — | W54 | — | 0.5 | ME221-C1-79 | — | — | — |
| 17 | ETCS relay (MCR) | — | W49 | — | 0.5 | ME221-C1-69 | — | — | — |
| 19 | Fuel pump control (FPC) | — | — | — | — | — | — | — | — |
| 20 | Canister pressure sensor (PPMP) | — | — | — | — | — | — | — | — |
| 21 | Accelerator pedal 5V supply (VCPA) | — | W23 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | Accelerator pedal 5V supply (VCP2) | — | W24 | — | 0.5 | SP-5V1-1 | — | — | — |
| 23 | Accelerator pedal position (VPA) | — | — | — | — | — | — | — | — |
| 26 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 29 | Accelerator pedal ground (EPA) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Accelerator pedal ground (EPA2) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Accelerator pedal position 2 (VPA2) | — | W57 | — | 0.5 | ME221-C1-17 | — | — | — |
| 35 | A/C clutch relay (AC) | — | W50 | — | 0.5 | ME221-C1-39 | — | — | — |
| 5 | Injector relay (IREL) | — | W51 | — | 0.5 | ME221-C1-70 | — | — | — |
| 7 | ETCS relay (+BM) | — | W52 | — | 0.5 | ME221-C1-71 | — | — | — |
| 8 | Leak detection pump (MPMP) | — | — | — | — | — | — | — | — |
OEM-A36
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Throttle actuator motor - (M-) | — | W43 | — | 0.5 | ME221-C1-67 | — | — | — |
| 10 | Ignition coil 2 (IGT2) | — | W32 | — | 0.5 | ME221-C1-31 | — | — | — |
| 11 | Purge valve (PRG) | — | — | — | — | — | — | — | — |
| 12 | Injector 1 port (#10) | — | W35 | — | 0.5 | ME221-C1-63 | — | — | — |
| 13 | Injector 4 port (#40) | — | W41 | — | 0.5 | ME221-C1-33 | — | — | — |
| 14 | Injector 1 direct (#1) | — | W36 | — | 0.5 | ME221-C1-4 | — | — | — |
| 16 | OCV intake bank 2 (OC2) | — | — | — | — | — | — | — | — |
| 17 | OCV intake bank 1 (OC1) | — | — | — | — | — | — | — | — |
| 18 | Throttle position (VTA1) | — | — | — | — | — | — | — | — |
| 19 | Sensor 5V supply (VC) | — | W25 | — | 0.5 | SP-5V1-1 | — | — | — |
| 2 | Throttle actuator motor + (M+) | — | W44 | — | 0.5 | ME221-C1-68 | — | — | — |
| 20 | Oil temperature (OT) | — | — | — | — | — | — | — | — |
| 21 | Ignition coil 1 (IGT1) | — | W31 | — | 0.5 | ME221-C1-32 | — | — | — |
| 22 | Injector 2 port (#20) | — | W37 | — | 0.5 | ME221-C1-33 | — | — | — |
| 23 | Injector 4 direct (#4) | — | W42 | — | 0.5 | ME221-C1-3 | — | — | — |
| 24 | Injector 3 direct (#3) | — | W39 | — | 0.5 | ME221-C1-63 | — | — | — |
| 25 | Injector 2 direct (#2) | — | W38 | — | 0.5 | ME221-C1-3 | — | — | — |
| 28 | Throttle position 2 (VTA2) | — | W58 | — | 0.5 | ME221-C1-18 | — | — | — |
| 29 | Sensor ground (E1) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Power ground (E02) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Engine coolant temperature (THW) | — | W59 | — | 0.5 | ME221-C1-86 | — | — | — |
| 31 | Ignition coil 3 (IGT3) | — | W33 | — | 0.5 | ME221-C1-2 | — | — | — |
| 32 | Injector 3 port (#30) | — | W40 | — | 0.5 | ME221-C1-4 | — | — | — |
| 4 | Power ground (E01) | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | OCV exhaust bank 2 (OE2) | — | — | — | — | — | — | — | — |
| 6 | Heated oxygen sensor heater (HT1B) | — | — | — | — | — | — | — | — |
| 7 | OCV exhaust bank 1 (OE1) | — | — | — | — | — | — | — | — |
| 8 | Ignition coil 4 (IGT4) | — | W34 | — | 0.5 | ME221-C1-1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-A33-29 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-A34-27 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-A35-29 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-A35-30 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-A36-29 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | ME221-C1-52 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | ME221-C1-84 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A33-1 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A34-6 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | ME221-C1-15 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | ME221-C1-64 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W22 | — | 0.5 | OEM-A34-34 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | OEM-A35-21 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | OEM-A35-22 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | OEM-A36-19 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | ME221-C1-45 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-A33-4 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A34-1 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A34-2 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A34-3 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-A36-3 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-A36-4 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | ME221-C1-10 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | ME221-C1-61 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | ME221-C1-89 | — | — | — |
| 1 | — | — | W14 | — | 0.85 | ME221-C1-90 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A33-1 | ECU power (+B2, main relay) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | single_source | |
| OEM-A33-12 | Intake air temperature (THA, in MAF) | temp_in | ME221-C1-57 | ANA TEMP 2 | temp_in | single_source | |
| OEM-A33-14 | Starter signal (STSW2) | digital_in | ME221-C1-6 | DIG_IN 1 | digital_in | single_source | |
| OEM-A33-15 | Clutch switch (CLSW) | digital_in | ME221-C1-7 | DIG_IN 2 | digital_in | single_source | |
| OEM-A33-16 | Neutral switch (NSW) | digital_in | — | — | — | single_source | |
| OEM-A33-17 | Starter signal (STSW2) | digital_in | — | — | — | single_source | |
| OEM-A33-18 | CAN low (CANL) | can_l | ME221-C1-51 | CAN 1 LOW | can_l | single_source | |
| OEM-A33-19 | CAN high (CANH) | can_h | ME221-C1-21 | CAN 1 HIGH | can_h | single_source | |
| OEM-A33-2 | Battery constant (BATT, memory) | power_in | — | — | — | single_source | |
| OEM-A33-20 | Blower relay (HB) | low_side_out | ME221-C1-44 | LOW SIDE 4 | low_side_out | single_source | |
| OEM-A33-22 | Mass air flow (VG) | analog_in | ME221-C1-26 | ANA VOLT 1 | analog_in | single_source | |
| OEM-A33-27 | Ignition switch sense (IGSW, IG2 relay) | digital_in | — | — | — | single_source | |
| OEM-A33-28 | Shield ground (SLE2) | shield | — | — | — | single_source | |
| OEM-A33-29 | MAF sensor ground (E2G) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-A33-3 | Stop light switch (ST1-) | digital_in | — | — | — | single_source | |
| OEM-A33-4 | Power ground (EC) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-A33-7 | Stop light switch (STP) | digital_in | — | — | — | single_source | |
| OEM-A33-8 | A/C pressure sensor (ACP) | analog_in | — | — | — | single_source | |
| OEM-A34-1 | Power ground (E03) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-A34-11 | DI injector confirmation (IJF1) | analog_in | — | — | — | single_source | |
| OEM-A34-13 | High-pressure fuel pump spill valve (FPF) | low_side_out | — | — | — | single_source | |
| OEM-A34-14 | VVT cam sensor exhaust bank 1 (EV1+) | trigger_in | ME221-C1-22 | CAM A VR+ | trigger_in | single_source | |
| OEM-A34-15 | VVT cam sensor intake bank 2 (VV2+) | trigger_in | — | — | — | single_source | |
| OEM-A34-16 | Crank position (NE+) | trigger_in | ME221-C1-81 | CRANK VR+ | trigger_in | single_source | |
| OEM-A34-17 | Knock sensor 2 (KNK2) | knock_in | — | — | — | single_source | |
| OEM-A34-18 | A/F ratio sensor (A1A-) | — | — | — | — | single_source | |
| OEM-A34-19 | A/F ratio sensor (A1A+) | — | — | — | — | single_source | |
| OEM-A34-2 | Power ground (E04) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-A34-20 | Manifold absolute pressure (PIM) | analog_in | ME221-C1-56 | ANA VOLT 2 | analog_in | single_source | |
| OEM-A34-21 | Heated oxygen sensor (OX1B, rear) | lambda_nb_in | — | — | — | single_source | |
| OEM-A34-25 | VVT cam sensor exhaust bank 2 (EV2+) | trigger_in | — | — | — | single_source | |
| OEM-A34-26 | VVT cam sensor intake bank 1 (VV1+) | trigger_in | ME221-C1-23 | CAM A VR- | trigger_in | single_source | |
| OEM-A34-27 | Crank position return (NE-) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-A34-28 | Knock sensor 1 (KNK1) | knock_in | ME221-C1-53 | KNOCK 1 SIGNAL | knock_in | single_source | |
| OEM-A34-29 | Shield ground (EKNK) | shield | — | — | — | single_source | |
| OEM-A34-3 | Power ground (E05) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-A34-30 | Shield ground (SLE1) | shield | — | — | — | single_source | |
| OEM-A34-31 | DI injector confirmation (IJF2) | analog_in | — | — | — | single_source | |
| OEM-A34-32 | High-pressure fuel pump spill valve (FPD) | low_side_out | — | — | — | single_source | |
| OEM-A34-34 | OCV power source (VCV, 5V) | vref | ME221-C1-45 | 5V REF | vref | single_source | |
| OEM-A34-35 | Shield ground (SLE3) | shield | — | — | — | single_source | |
| OEM-A34-5 | A/F ratio sensor heater (HA1A) | low_side_out | ME221-C1-16 | LSU HEATER -VE | low_side_out | single_source | |
| OEM-A34-6 | ECU power (+B, main relay) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | single_source | |
| OEM-A34-9 | Fuel pressure sensor (PR) | analog_in | — | — | — | single_source | |
| OEM-A35-1 | Canister vent valve (VPMP) | low_side_out | — | — | — | single_source | |
| OEM-A35-10 | Fuel pump control monitor (DI) | analog_in | — | — | — | single_source | |
| OEM-A35-11 | Cooling fan relay 3 (FAN1) | low_side_out | ME221-C1-74 | LOW SIDE 3 | low_side_out | single_source | |
| OEM-A35-12 | Cooling fan relay 2 (FAN2) | low_side_out | ME221-C1-12 | LOW SIDE 2 | low_side_out | single_source | |
| OEM-A35-13 | EFI main relay 1 (SSHUT) | low_side_out | ME221-C1-73 | LOW SIDE 1 | low_side_out | single_source | |
| OEM-A35-15 | Tachometer output (TACH) | tacho_out | ME221-C1-79 | TACHOMETER | tacho_out | single_source | |
| OEM-A35-17 | ETCS relay (MCR) | low_side_out | ME221-C1-69 | LOW SIDE 5 | low_side_out | single_source | |
| OEM-A35-19 | Fuel pump control (FPC) | low_side_out | — | — | — | single_source | |
| OEM-A35-20 | Canister pressure sensor (PPMP) | analog_in | — | — | — | single_source | |
| OEM-A35-21 | Accelerator pedal 5V supply (VCPA) | vref | ME221-C1-45 | 5V REF | vref | single_source | |
| OEM-A35-22 | Accelerator pedal 5V supply (VCP2) | vref | ME221-C1-45 | 5V REF | vref | single_source | |
| OEM-A35-23 | Accelerator pedal position (VPA) | analog_in | — | — | — | single_source | |
| OEM-A35-26 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-A35-29 | Accelerator pedal ground (EPA) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-A35-30 | Accelerator pedal ground (EPA2) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-A35-31 | Accelerator pedal position 2 (VPA2) | analog_in | ME221-C1-17 | ANA VOLT 3 | analog_in | single_source | |
| OEM-A35-35 | A/C clutch relay (AC) | low_side_out | ME221-C1-39 | LOW SIDE 6 | low_side_out | single_source | |
| OEM-A35-5 | Injector relay (IREL) | low_side_out | ME221-C1-70 | Stepper 3 / B1 | hbridge_out | single_source | |
| OEM-A35-7 | ETCS relay (+BM) | low_side_out | ME221-C1-71 | Stepper 4 / B2 | hbridge_out | single_source | |
| OEM-A35-8 | Leak detection pump (MPMP) | low_side_out | — | — | — | single_source | |
| OEM-A36-1 | Throttle actuator motor - (M-) | hbridge_out | ME221-C1-67 | Stepper 1 / A1 | hbridge_out | single_source | |
| OEM-A36-10 | Ignition coil 2 (IGT2) | ignition_out | ME221-C1-31 | COIL 2 | ignition_out | single_source | |
| OEM-A36-11 | Purge valve (PRG) | low_side_out | — | — | — | single_source | |
| OEM-A36-12 | Injector 1 port (#10) | injector_out | ME221-C1-63 | INJECTOR 1 | injector_out | single_source | |
| OEM-A36-13 | Injector 4 port (#40) | injector_out | ME221-C1-33 | INJECTOR 3 | injector_out | single_source | |
| OEM-A36-14 | Injector 1 direct (#1) | injector_out | ME221-C1-4 | INJECTOR 2 | injector_out | single_source | |
| OEM-A36-16 | OCV intake bank 2 (OC2) | low_side_out | — | — | — | single_source | |
| OEM-A36-17 | OCV intake bank 1 (OC1) | low_side_out | — | — | — | single_source | |
| OEM-A36-18 | Throttle position (VTA1) | analog_in | — | — | — | single_source | |
| OEM-A36-19 | Sensor 5V supply (VC) | vref | ME221-C1-45 | 5V REF | vref | single_source | |
| OEM-A36-2 | Throttle actuator motor + (M+) | hbridge_out | ME221-C1-68 | Stepper 2 / A2 | hbridge_out | single_source | |
| OEM-A36-20 | Oil temperature (OT) | temp_in | — | — | — | single_source | |
| OEM-A36-21 | Ignition coil 1 (IGT1) | ignition_out | ME221-C1-32 | COIL 1 | ignition_out | single_source | |
| OEM-A36-22 | Injector 2 port (#20) | injector_out | ME221-C1-33 | INJECTOR 3 | injector_out | single_source | |
| OEM-A36-23 | Injector 4 direct (#4) | injector_out | ME221-C1-3 | INJECTOR 4 | injector_out | single_source | |
| OEM-A36-24 | Injector 3 direct (#3) | injector_out | ME221-C1-63 | INJECTOR 1 | injector_out | single_source | |
| OEM-A36-25 | Injector 2 direct (#2) | injector_out | ME221-C1-3 | INJECTOR 4 | injector_out | single_source | |
| OEM-A36-28 | Throttle position 2 (VTA2) | analog_in | ME221-C1-18 | ANA VOLT 4 | analog_in | single_source | |
| OEM-A36-29 | Sensor ground (E1) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-A36-3 | Power ground (E02) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-A36-30 | Engine coolant temperature (THW) | temp_in | ME221-C1-86 | ANA TEMP 1 | temp_in | single_source | |
| OEM-A36-31 | Ignition coil 3 (IGT3) | ignition_out | ME221-C1-2 | COIL 3 | ignition_out | single_source | |
| OEM-A36-32 | Injector 3 port (#30) | injector_out | ME221-C1-4 | INJECTOR 2 | injector_out | single_source | |
| OEM-A36-4 | Power ground (E01) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-A36-5 | OCV exhaust bank 2 (OE2) | low_side_out | — | — | — | single_source | |
| OEM-A36-6 | Heated oxygen sensor heater (HT1B) | low_side_out | — | — | — | single_source | |
| OEM-A36-7 | OCV exhaust bank 1 (OE1) | low_side_out | — | — | — | single_source | |
| OEM-A36-8 | Ignition coil 4 (IGT4) | ignition_out | ME221-C1-1 | COIL 4 | ignition_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A33-1 | SP-14V-1 | 0.85 | no route | ECU power (+B2, main relay) | — | |
| W2 | OEM-A34-6 | SP-14V-1 | 0.85 | no route | ECU power (+B, main relay) | — | |
| W3 | SP-14V-1 | ME221-C1-15 | 0.85 | no route | IGN +12V | — | |
| W4 | SP-14V-1 | ME221-C1-64 | 0.85 | no route | VBAT | — | |
| W5 | OEM-A33-4 | SP-GND-1 | 0.85 | no route | Power ground (EC) | — | |
| W6 | OEM-A34-1 | SP-GND-1 | 0.85 | no route | Power ground (E03) | — | |
| W7 | OEM-A34-2 | SP-GND-1 | 0.85 | no route | Power ground (E04) | — | |
| W8 | OEM-A34-3 | SP-GND-1 | 0.85 | no route | Power ground (E05) | — | |
| W9 | OEM-A36-3 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W10 | OEM-A36-4 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W11 | SP-GND-1 | ME221-C1-10 | 0.85 | no route | GROUND CHASSIS | — | |
| W12 | SP-GND-1 | ME221-C1-61 | 0.85 | no route | GROUND | — | |
| W13 | SP-GND-1 | ME221-C1-89 | 0.85 | no route | GROUND | — | |
| W14 | SP-GND-1 | ME221-C1-90 | 0.85 | no route | GROUND | — | |
| W15 | OEM-A33-29 | SP-0V-1 | 0.5 | no route | MAF sensor ground (E2G) | — | |
| W16 | OEM-A34-27 | SP-0V-1 | 0.5 | no route | Crank position return (NE-) | — | |
| W17 | OEM-A35-29 | SP-0V-1 | 0.5 | no route | Accelerator pedal ground (EPA) | — | |
| W18 | OEM-A35-30 | SP-0V-1 | 0.5 | no route | Accelerator pedal ground (EPA2) | — | |
| W19 | OEM-A36-29 | SP-0V-1 | 0.5 | no route | Sensor ground (E1) | — | |
| W20 | SP-0V-1 | ME221-C1-52 | 0.5 | no route | SENSORS GROUND | — | |
| W21 | SP-0V-1 | ME221-C1-84 | 0.5 | no route | Sensor Ground | — | |
| W22 | OEM-A34-34 | SP-5V1-1 | 0.5 | no route | OCV power source (VCV, 5V) | — | |
| W23 | OEM-A35-21 | SP-5V1-1 | 0.5 | no route | Accelerator pedal 5V supply (VCPA) | — | |
| W24 | OEM-A35-22 | SP-5V1-1 | 0.5 | no route | Accelerator pedal 5V supply (VCP2) | — | |
| W25 | OEM-A36-19 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply (VC) | — | |
| W26 | SP-5V1-1 | ME221-C1-45 | 0.5 | no route | 5V REF | — | |
| W27 | OEM-A34-16 | ME221-C1-81 | 0.5 | no route | Crank position (NE+) | — | |
| W28 | OEM-A34-14 | ME221-C1-22 | 0.5 | no route | VVT cam sensor exhaust bank 1 (EV1+) | — | |
| W29 | OEM-A34-26 | ME221-C1-23 | 0.5 | no route | VVT cam sensor intake bank 1 (VV1+) | — | |
| W30 | OEM-A34-28 | ME221-C1-53 | 0.5 | no route | Knock sensor 1 (KNK1) | — | |
| W31 | OEM-A36-21 | ME221-C1-32 | 0.5 | no route | Ignition coil 1 (IGT1) | — | |
| W32 | OEM-A36-10 | ME221-C1-31 | 0.5 | no route | Ignition coil 2 (IGT2) | — | |
| W33 | OEM-A36-31 | ME221-C1-2 | 0.5 | no route | Ignition coil 3 (IGT3) | — | |
| W34 | OEM-A36-8 | ME221-C1-1 | 0.5 | no route | Ignition coil 4 (IGT4) | — | |
| W35 | OEM-A36-12 | ME221-C1-63 | 0.5 | no route | Injector 1 port (#10) | — | |
| W36 | OEM-A36-14 | ME221-C1-4 | 0.5 | no route | Injector 1 direct (#1) | — | |
| W37 | OEM-A36-22 | ME221-C1-33 | 0.5 | no route | Injector 2 port (#20) | — | |
| W38 | OEM-A36-25 | ME221-C1-3 | 0.5 | no route | Injector 2 direct (#2) | — | |
| W39 | OEM-A36-24 | ME221-C1-63 | 0.5 | no route | Injector 3 direct (#3) | — | |
| W40 | OEM-A36-32 | ME221-C1-4 | 0.5 | no route | Injector 3 port (#30) | — | |
| W41 | OEM-A36-13 | ME221-C1-33 | 0.5 | no route | Injector 4 port (#40) | — | |
| W42 | OEM-A36-23 | ME221-C1-3 | 0.5 | no route | Injector 4 direct (#4) | — | |
| W43 | OEM-A36-1 | ME221-C1-67 | 0.5 | no route | Throttle actuator motor - (M-) | — | |
| W44 | OEM-A36-2 | ME221-C1-68 | 0.5 | no route | Throttle actuator motor + (M+) | — | |
| W45 | OEM-A35-13 | ME221-C1-73 | 0.5 | no route | EFI main relay 1 (SSHUT) | — | |
| W46 | OEM-A35-12 | ME221-C1-12 | 0.5 | no route | Cooling fan relay 2 (FAN2) | — | |
| W47 | OEM-A35-11 | ME221-C1-74 | 0.5 | no route | Cooling fan relay 3 (FAN1) | — | |
| W48 | OEM-A33-20 | ME221-C1-44 | 0.5 | no route | Blower relay (HB) | — | |
| W49 | OEM-A35-17 | ME221-C1-69 | 0.5 | no route | ETCS relay (MCR) | — | |
| W50 | OEM-A35-35 | ME221-C1-39 | 0.5 | no route | A/C clutch relay (AC) | — | |
| W51 | OEM-A35-5 | ME221-C1-70 | 0.5 | no route | Injector relay (IREL) | — | |
| W52 | OEM-A35-7 | ME221-C1-71 | 0.5 | no route | ETCS relay (+BM) | — | |
| W53 | OEM-A34-5 | ME221-C1-16 | 0.5 | no route | A/F ratio sensor heater (HA1A) | — | |
| W54 | OEM-A35-15 | ME221-C1-79 | 0.5 | no route | Tachometer output (TACH) | — | |
| W55 | OEM-A33-22 | ME221-C1-26 | 0.5 | no route | Mass air flow (VG) | — | |
| W56 | OEM-A34-20 | ME221-C1-56 | 0.5 | no route | Manifold absolute pressure (PIM) | — | |
| W57 | OEM-A35-31 | ME221-C1-17 | 0.5 | no route | Accelerator pedal position 2 (VPA2) | — | |
| W58 | OEM-A36-28 | ME221-C1-18 | 0.5 | no route | Throttle position 2 (VTA2) | — | |
| W59 | OEM-A36-30 | ME221-C1-86 | 0.5 | no route | Engine coolant temperature (THW) | — | |
| W60 | OEM-A33-12 | ME221-C1-57 | 0.5 | no route | Intake air temperature (THA, in MAF) | — | |
| W61 | OEM-A33-14 | ME221-C1-6 | 0.5 | no route | Starter signal (STSW2) | — | |
| W62 | OEM-A33-15 | ME221-C1-7 | 0.5 | no route | Clutch switch (CLSW) | — | |
| W63 | OEM-A33-19 | ME221-C1-21 | 0.5 | no route | CAN high (CANH) | — | |
| W64 | OEM-A33-18 | ME221-C1-51 | 0.5 | no route | CAN low (CANL) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (13)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | DBW_SENSOR_INPUT | tps | Only 1 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them. |
| error | NET_MERGED | ME221-C1-3 + OEM-A36-23 + OEM-A36-25 | 2 different OEM functions share one net: OEM-A36-23 Injector 4 direct (#4); OEM-A36-25 Injector 2 direct (#2) |
| error | NET_MERGED | ME221-C1-33 + OEM-A36-13 + OEM-A36-22 | 2 different OEM functions share one net: OEM-A36-13 Injector 4 port (#40); OEM-A36-22 Injector 2 port (#20) |
| error | NET_MERGED | ME221-C1-4 + OEM-A36-14 + OEM-A36-32 | 2 different OEM functions share one net: OEM-A36-14 Injector 1 direct (#1); OEM-A36-32 Injector 3 port (#30) |
| error | NET_MERGED | ME221-C1-63 + OEM-A36-12 + OEM-A36-24 | 2 different OEM functions share one net: OEM-A36-12 Injector 1 port (#10); OEM-A36-24 Injector 3 direct (#3) |
| error | REQUIRED_UNMAPPED | OEM-A35-23 | Required OEM function "Accelerator pedal position (VPA)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A36-18 | Required OEM function "Throttle position (VTA1)" (analog_in) is not connected to the new ECU. |
| warn | DBW_MOTOR_CURRENT | ME221-C1-67 | Cannot confirm ME221 can drive the throttle motor: ME221-C1-67 "Stepper 1 / A1" is rated 0.5 A peak, but the motor stall current at OEM-A36-1 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | DBW_MOTOR_CURRENT | ME221-C1-68 | Cannot confirm ME221 can drive the throttle motor: ME221-C1-68 "Stepper 2 / A2" is rated 0.5 A peak, but the motor stall current at OEM-A36-2 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | NET_FAMILY | OEM-A35-5 ↔ ME221-C1-70 | OEM-A35-5 "Injector relay (IREL)" [low_side_out] is wired to ME221-C1-70 "Stepper 3 / B1" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-A35-7 ↔ ME221-C1-71 | OEM-A35-7 "ETCS relay (+BM)" [low_side_out] is wired to ME221-C1-71 "Stepper 4 / B2" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NO_FUEL_PUMP | fuel pump | This engine harness has no fuel-pump control path: no fuel-pump relay output is wired to the new ECU. If the stock car switches the pump outside the ECU (an airflow-meter contact or a separate module), the standalone must drive the pump relay itself — see the install notes for this car. |
| info | UNMAPPED | OEM | 34 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-A34-29 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-A35-19 Fuel pump control (FPC); OEM-A35-20 Canister pressure sensor (PPMP); OEM-A35-26 Starter signal (STA); OEM-A35-8 Leak detection pump (MPMP); OEM-A36-11 Purge valve (PRG); OEM-A36-16 OCV intake bank 2 (OC2); OEM-A36-17 OCV intake bank 1 (OC1); OEM-A36-20 Oil temperature (OT); 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 (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-A33-2 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Fit check: needs add-on. Resolve these before building: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - Trigger pattern for Toyota FA20 not found in the ECU's docs (Trigger-pattern list is only inside MEITE software, not published online) 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-A35 23: Accelerator pedal position (VPA): no free tps/analog_0_5 on Motorsport Electronics ME221 - OEM-A36 18: Throttle position (VTA1): no free tps/analog_0_5 on Motorsport Electronics ME221 Not wired: - OEM-A33 2: Battery constant (BATT, memory): Motorsport Electronics ME221 has no battery-constant input; not needed - OEM-A34 25: VVT cam sensor exhaust bank 2 (EV2+): no free cam_hall/cam_vr/frequency_in input on Motorsport Electronics ME221 - OEM-A34 15: VVT cam sensor intake bank 2 (VV2+): no free cam_hall/cam_vr/frequency_in input on Motorsport Electronics ME221 - OEM-A34 17: Knock sensor 2 (KNK2): no free knock input on Motorsport Electronics ME221 - OEM-A33 28: Shield ground (SLE2): no shield pin on Motorsport Electronics ME221 - OEM-A34 29: Shield ground (EKNK): no shield pin on Motorsport Electronics ME221 - OEM-A34 30: Shield ground (SLE1): no shield pin on Motorsport Electronics ME221 - OEM-A34 35: Shield ground (SLE3): no shield pin on Motorsport Electronics ME221 - 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); Motorsport Electronics ME221 has no dedicated key-on input - OEM-A36 6: Heated oxygen sensor heater (HT1B): no free heater_low_side/low_side/ls_hs/hbridge on Motorsport Electronics ME221 - OEM-A36 17: OCV intake bank 1 (OC1): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A36 7: OCV exhaust bank 1 (OE1): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A36 16: OCV intake bank 2 (OC2): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A36 5: OCV exhaust bank 2 (OE2): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A34 13: High-pressure fuel pump spill valve (FPF): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A34 32: High-pressure fuel pump spill valve (FPD): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A35 1: Canister vent valve (VPMP): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A35 19: Fuel pump control (FPC): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A35 8: Leak detection pump (MPMP): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A36 11: Purge valve (PRG): no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-A34 21: Heated oxygen sensor (OX1B, rear): no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-A36 20: Oil temperature (OT): no free thermistor/analog_0_5 on Motorsport Electronics ME221 - OEM-A33 8: A/C pressure sensor (ACP): no free analog_0_5 on Motorsport Electronics ME221 - OEM-A34 11: DI injector confirmation (IJF1): no free analog_0_5 on Motorsport Electronics ME221 - OEM-A34 31: DI injector confirmation (IJF2): no free analog_0_5 on Motorsport Electronics ME221 - OEM-A34 9: Fuel pressure sensor (PR): no free analog_0_5 on Motorsport Electronics ME221 - OEM-A35 10: Fuel pump control monitor (DI): no free analog_0_5 on Motorsport Electronics ME221 - OEM-A35 20: Canister pressure sensor (PPMP): no free analog_0_5 on Motorsport Electronics ME221 - OEM-A33 16: Neutral switch (NSW): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-A33 17: Starter signal (STSW2): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-A33 3: Stop light switch (ST1-): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-A33 7: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-A35 26: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - 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
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Motorsport Electronics GEN2 ME221/ME360/ME442 wire-in pinout | https://motorsport-electronics.co.uk/onlinehelp/html/ME442ME360ME221GEN2Wire-InPinout.html | — | — | — |
| 4 | vendor_doc | Scion 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 | — | — | — |