Chevrolet Camaro SS 2010-15 (LS3/L99) → FuelTech FT450 (auto)
Chevrolet Camaro SS 2010-15 (LS3/L99) — FuelTech — FT450
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-20
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 | 65 wires · 10 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-X1-19 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-X1-47 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | NEW-KEYON-1 | MAIN-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | MAIN-R-OUT | FT450-A-A13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-X1-73 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-X2-78 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-X2-79 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | FT450-A-A7 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-X1-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-X1-13 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-X1-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-X1-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-X1-31 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-X1-38 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-X1-49 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-X2-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-X2-34 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-X2-35 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-X2-52 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-X2-53 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-X2-56 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-X2-60 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-X2-66 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-X2-69 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | SP-0V-1 | FT450-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-X1-33 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-X1-34 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-X1-36 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-X1-56 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-X2-2 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-X2-3 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-X2-41 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-X2-43 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-X2-44 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | SP-5V1-1 | FT450-A-A14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-X2-68 | FT450-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | SP-0V-1 | FT450-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-X2-64 | FT450-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-X2-70 | FT450-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-X2-73 | FT450-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-X2-77 | FT450-A-A10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-X2-76 | FT450-A-A11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-X2-20 | FT450-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-X2-37 | FT450-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-X2-38 | FT450-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-X2-39 | FT450-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-X2-18 | FT450-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-X2-19 | FT450-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-X2-40 | FT450-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-X2-17 | FT450-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-X1-50 | FT450-A-A6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-X1-59 | FT450-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-X1-41 | FT450-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-X2-58 | FT450-A-A23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-X1-29 | FT450-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-X2-65 | FT450-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-X1-32 | FT450-A-A25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-X2-21 | FT450-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-X1-17 | FT450-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-X1-51 | FT450-A-A5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-X1-37 | FT450-A-A26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-X1-28 | FT450-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-X1-27 | FT450-A-A15 | 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 | FT450-A-A14 | FT450-A-A7 | open (OL) | 5 V sensor reference must not touch power ground | |
| 2 | OEM-X1-19 | FT450-A-A7 | open (OL) | +12 V supply must not touch power ground | |
| 3 | FT450-A-A12 | FT450-A-A13 | open (OL) | sensor ground must not touch +12 V supply | |
| 4 | FT450-A-A12 | FT450-A-A14 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 5 | FT450-A-A12 | NEW-BATT-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 6 | FT450-A-A12 | NEW-KEYON-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | FT450-A-A12 | OEM-X1-19 | open (OL) | sensor ground must not touch +12 V supply | |
| 8 | FT450-A-A14 | FT450-A-A13 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 9 | FT450-A-A14 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 10 | FT450-A-A14 | NEW-KEYON-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 11 | FT450-A-A7 | FT450-A-A13 | open (OL) | power ground must not touch +12 V supply | |
| 12 | FT450-A-A7 | NEW-BATT-1 | open (OL) | power ground must not touch +12 V supply | |
| 13 | FT450-A-A7 | NEW-KEYON-1 | open (OL) | power ground must not touch +12 V supply | |
| 14 | OEM-X1-19 | FT450-A-A14 | 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
FT450-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | Injector 1 (Bank A) | — | W45 | — | 0.5 | OEM-X2-20 | — | — | — |
| A1 | Injector 1 (Bank A) | — | W47 | — | 0.5 | OEM-X2-38 | — | — | — |
| A1 | Injector 1 (Bank A) | — | W49 | — | 0.5 | OEM-X2-18 | — | — | — |
| A1 | Injector 1 (Bank A) | — | W51 | — | 0.5 | OEM-X2-40 | — | — | — |
| A10 | Ignition 3 | — | W43 | — | 0.5 | OEM-X2-77 | — | — | — |
| A11 | Ignition 4 | — | W44 | — | 0.5 | OEM-X2-76 | — | — | — |
| A12 | Signal ground | — | W27 | — | 0.5 | SP-0V-1 | — | — | — |
| A13 | +12V switched | — | W6 | — | 0.85 | MAIN-R-OUT | — | — | — |
| A14 | +5V sensor supply | — | W37 | — | 0.5 | SP-5V1-1 | — | — | — |
| A15 | CAN A LOW | — | W65 | — | 0.5 | OEM-X1-27 | — | — | — |
| A16 | CAN A HIGH | — | W64 | — | 0.5 | OEM-X1-28 | — | — | — |
| A17 | Phase input (cam) | — | W40 | — | 0.5 | OEM-X2-64 | — | — | — |
| A18 | RPM reference (crank -) | — | W38 | — | 0.5 | OEM-X2-68 | — | — | — |
| A18 | RPM reference (crank -) | — | W39 | — | 0.5 | SP-0V-1 | — | — | — |
| A19 | RPM signal (crank +) | — | — | — | — | — | — | — | — |
| A2 | Injector 2 (Bank A) | — | W46 | — | 0.5 | OEM-X2-37 | — | — | — |
| A2 | Injector 2 (Bank A) | — | W48 | — | 0.5 | OEM-X2-39 | — | — | — |
| A2 | Injector 2 (Bank A) | — | W50 | — | 0.5 | OEM-X2-19 | — | — | — |
| A2 | Injector 2 (Bank A) | — | W52 | — | 0.5 | OEM-X2-17 | — | — | — |
| A20 | White input 1 | — | W55 | — | 0.5 | OEM-X1-41 | — | — | — |
| A21 | White input 2 | — | W57 | — | 0.5 | OEM-X1-29 | — | — | — |
| A22 | White input 3 (TPS) | — | W58 | — | 0.5 | OEM-X2-65 | — | — | — |
| A23 | White input 4 (oil pressure) | — | W56 | — | 0.5 | OEM-X2-58 | — | — | — |
| A24 | White input 5 (water temp) | — | W60 | — | 0.5 | OEM-X2-21 | — | — | — |
| A25 | White input 6 (fuel pressure) | — | W59 | — | 0.5 | OEM-X1-32 | — | — | — |
| A26 | White input 7 (air temp) | — | W63 | — | 0.5 | OEM-X1-37 | — | — | — |
| A3 | Aux 1 | — | W54 | — | 0.5 | OEM-X1-59 | — | — | — |
| A4 | Aux 2 | — | W61 | — | 0.5 | OEM-X1-17 | — | — | — |
| A5 | Aux 3 | — | W62 | — | 0.5 | OEM-X1-51 | — | — | — |
| A6 | Aux 4 (fuel pump / relays) | — | W53 | — | 0.5 | OEM-X1-50 | — | — | — |
| A7 | Power ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| A8 | Ignition 1 | — | W41 | — | 0.5 | OEM-X2-70 | — | — | — |
| A9 | Ignition 2 | — | W42 | — | 0.5 | OEM-X2-73 | — | — | — |
MAIN-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (ignition-switched +12V) | — | W3 | — | 0.5 | NEW-KEYON-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W5 | — | 0.5 | SP-GND-1 | — | — | — |
| IN | Relay contact input (battery + via main fuse) | — | W4 | — | 0.85 | NEW-BATT-1 | — | — | — |
| OUT | Relay contact output (switched +12V bus) | — | W6 | — | 0.85 | FT450-A-A13 | — | — | — |
NEW-BATT
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | MAIN-R-IN | — | — | — |
NEW-KEYON
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W3 | — | 0.5 | MAIN-R-COIL+ | — | — | — |
OEM-X1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Park/Neutral signal (1786) | — | — | — | — | — | — | — | — |
| 10 | HO2S signal, bank 1 sensor 2 (post-cat) | — | — | — | — | — | — | — | — |
| 11 | HO2S low reference, bank 1 sensor 2 | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | A/C refrigerant pressure signal | — | — | — | — | — | — | — | — |
| 13 | A/C refrigerant pressure sensor low reference (5514) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Fuel level sensor signal, primary (1589) | — | — | — | — | — | — | — | — |
| 17 | High speed cooling fan relay | — | W61 | — | 0.5 | FT450-A-A4 | — | — | — |
| 18 | Accessory wakeup serial data (5985) | — | — | — | — | — | — | — | — |
| 19 | Ignition 1 voltage (key hot) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | 4WD low signal (1694) | — | — | — | — | — | — | — | — |
| 20 | Battery positive voltage (batt hot) | — | — | — | — | — | — | — | — |
| 23 | APP sensor low reference | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Fuel tank pressure signal | — | — | — | — | — | — | — | — |
| 27 | High-speed GMLAN serial data bus - (2501) | — | W65 | — | 0.5 | FT450-A-A15 | — | — | — |
| 28 | High-speed GMLAN serial data bus + (2500) | — | W64 | — | 0.5 | FT450-A-A16 | — | — | — |
| 29 | Accelerator pedal position (APP) sensor 1 signal | — | W57 | — | 0.5 | FT450-A-A21 | — | — | — |
| 3 | Axle switch signal (1695) | — | — | — | — | — | — | — | — |
| 30 | APP sensor low reference | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Fuel tank pressure sensor low reference (6049) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 32 | Accelerator pedal position (APP) sensor 2 signal | — | W59 | — | 0.5 | FT450-A-A25 | — | — | — |
| 33 | 5V reference (fuel tank pressure) | — | W28 | — | 0.5 | SP-5V1-1 | — | — | — |
| 34 | 5V reference (A/C pressure) | — | W29 | — | 0.5 | SP-5V1-1 | — | — | — |
| 36 | 5V reference (APP sensor) | — | W30 | — | 0.5 | SP-5V1-1 | — | — | — |
| 37 | Intake air temperature (IAT) signal | — | W63 | — | 0.5 | FT450-A-A26 | — | — | — |
| 38 | Intake air temperature (IAT) low reference | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 41 | Mass air flow (MAF) signal | — | W55 | — | 0.5 | FT450-A-A20 | — | — | — |
| 47 | Ignition 1 voltage (key hot) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 48 | Tachometer output | — | — | — | — | — | — | — | — |
| 49 | HO2S low reference, bank 2 sensor 2 | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 50 | Fuel pump relay control (primary) | — | W53 | — | 0.5 | FT450-A-A6 | — | — | — |
| 51 | Fuel pump relay control (secondary) | — | W62 | — | 0.5 | FT450-A-A5 | — | — | — |
| 52 | Starter enable relay control | — | — | — | — | — | — | — | — |
| 56 | 5V reference (APP sensor) | — | W31 | — | 0.5 | SP-5V1-1 | — | — | — |
| 57 | VSS output to ABS (128k) | — | — | — | — | — | — | — | — |
| 58 | Low speed cooling fan relay | — | — | — | — | — | — | — | — |
| 59 | Powertrain relay coil control (main relay) | — | W54 | — | 0.5 | FT450-A-A3 | — | — | — |
| 61 | EVAP canister vent solenoid | — | — | — | — | — | — | — | — |
| 63 | A/C compressor clutch relay | — | — | — | — | — | — | — | — |
| 64 | HO2S heater low control, bank 2 sensor 2 | — | — | — | — | — | — | — | — |
| 65 | HO2S heater low control, bank 1 sensor 2 | — | — | — | — | — | — | — | — |
| 68 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
| 69 | HO2S signal, bank 2 sensor 2 (post-cat) | — | — | — | — | — | — | — | — |
| 70 | Secondary fuel level sensor signal (1937) | — | — | — | — | — | — | — | — |
| 71 | VSS high signal (manual trans) | — | — | — | — | — | — | — | — |
| 72 | VSS low signal (manual trans) | — | — | — | — | — | — | — | — |
| 73 | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Brake switch signal | — | — | — | — | — | — | — | — |
OEM-X2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Cylinder shutoff solenoid 1 (AFM) | — | — | — | — | — | — | — | — |
| 11 | Cylinder shutoff solenoid 4 (AFM) | — | — | — | — | — | — | — | — |
| 12 | HO2S heater low control, bank 1 sensor 1 | — | — | — | — | — | — | — | — |
| 13 | HO2S heater low control, bank 2 sensor 1 | — | — | — | — | — | — | — | — |
| 14 | Cylinder shutoff solenoid 2 (AFM) | — | — | — | — | — | — | — | — |
| 16 | Camshaft actuator solenoid (VVT) | — | — | — | — | — | — | — | — |
| 17 | Injector 8 | — | W52 | — | 0.5 | FT450-A-A2 | — | — | — |
| 18 | Injector 5 | — | W49 | — | 0.5 | FT450-A-A1 | — | — | — |
| 19 | Injector 6 | — | W50 | — | 0.5 | FT450-A-A2 | — | — | — |
| 2 | 5V reference (crankshaft sensor) | — | W32 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | Injector 1 | — | W45 | — | 0.5 | FT450-A-A1 | — | — | — |
| 21 | Engine coolant temperature (ECT) signal | — | W60 | — | 0.5 | FT450-A-A24 | — | — | — |
| 22 | ECT low reference | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 26 | Knock sensor 1 signal A | — | — | — | — | — | — | — | — |
| 27 | Knock sensor 1 signal B | — | — | — | — | — | — | — | — |
| 29 | Knock sensor 2 signal A | — | — | — | — | — | — | — | — |
| 3 | 5V reference (throttle body) | — | W33 | — | 0.5 | SP-5V1-1 | — | — | — |
| 30 | Knock sensor 2 signal B | — | — | — | — | — | — | — | — |
| 32 | Generator field duty control | — | — | — | — | — | — | — | — |
| 33 | Oil level switch signal | — | — | — | — | — | — | — | — |
| 34 | Oil pressure low reference | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 35 | Throttle body low reference | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 37 | Injector 2 | — | W46 | — | 0.5 | FT450-A-A2 | — | — | — |
| 38 | Injector 3 | — | W47 | — | 0.5 | FT450-A-A1 | — | — | — |
| 39 | Injector 4 | — | W48 | — | 0.5 | FT450-A-A2 | — | — | — |
| 40 | Injector 7 | — | W51 | — | 0.5 | FT450-A-A1 | — | — | — |
| 41 | 5V reference (oil pressure) | — | W34 | — | 0.5 | SP-5V1-1 | — | — | — |
| 43 | 5V reference (MAP) | — | W35 | — | 0.5 | SP-5V1-1 | — | — | — |
| 44 | 5V reference (camshaft sensor) | — | W36 | — | 0.5 | SP-5V1-1 | — | — | — |
| 5 | Throttle actuator motor − (M−) | — | — | — | — | — | — | — | — |
| 50 | Engine oil pressure signal | — | — | — | — | — | — | — | — |
| 52 | Camshaft actuator low reference | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 53 | MAP low reference | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 56 | HO2S low reference, bank 1 sensor 1 | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 57 | HO2S signal, bank 1 sensor 1 (pre-cat) | — | — | — | — | — | — | — | — |
| 58 | Manifold absolute pressure (MAP) signal | — | W56 | — | 0.5 | FT450-A-A23 | — | — | — |
| 59 | HO2S signal, bank 2 sensor 1 (pre-cat) | — | — | — | — | — | — | — | — |
| 6 | Throttle actuator motor + (M+) | — | — | — | — | — | — | — | — |
| 60 | HO2S low reference, bank 2 sensor 1 | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 61 | Charge indicator signal | — | — | — | — | — | — | — | — |
| 63 | Throttle position sensor 2 signal | — | — | — | — | — | — | — | — |
| 64 | Camshaft position signal (4x) | — | W40 | — | 0.5 | FT450-A-A17 | — | — | — |
| 65 | Throttle position sensor 1 signal | — | W58 | — | 0.5 | FT450-A-A22 | — | — | — |
| 66 | Camshaft position low reference | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 68 | Crankshaft position signal (58x) | — | W38 | — | 0.5 | FT450-A-A18 | — | — | — |
| 69 | Crankshaft position low reference | — | W26 | — | 0.5 | SP-0V-1 | — | — | — |
| 70 | Ignition coil 1 control | — | W41 | — | 0.5 | FT450-A-A8 | — | — | — |
| 71 | Ignition coil 8 control | — | — | — | — | — | — | — | — |
| 72 | Ignition coil 7 control | — | — | — | — | — | — | — | — |
| 73 | Ignition coil 2 control | — | W42 | — | 0.5 | FT450-A-A9 | — | — | — |
| 74 | Ignition coil 6 control | — | — | — | — | — | — | — | — |
| 75 | Ignition coil 5 control | — | — | — | — | — | — | — | — |
| 76 | Ignition coil 4 control | — | W44 | — | 0.5 | FT450-A-A11 | — | — | — |
| 77 | Ignition coil 3 control | — | W43 | — | 0.5 | FT450-A-A10 | — | — | — |
| 78 | Coil low reference (odd bank) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 79 | Coil low reference (even bank) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | EVAP canister purge solenoid | — | — | — | — | — | — | — | — |
| 9 | Cylinder shutoff solenoid 3 (AFM) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-X1-11 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-X1-13 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-X1-23 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-X1-30 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-X1-31 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-X1-38 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-X1-49 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-X2-22 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-X2-34 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-X2-35 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-X2-52 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | OEM-X2-53 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | OEM-X2-56 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | OEM-X2-60 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | OEM-X2-66 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | OEM-X2-69 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | FT450-A-A12 | — | — | — |
| 1 | — | — | W39 | — | 0.5 | FT450-A-A18 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-X1-19 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-X1-47 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W28 | — | 0.5 | OEM-X1-33 | — | — | — |
| 1 | — | — | W29 | — | 0.5 | OEM-X1-34 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | OEM-X1-36 | — | — | — |
| 1 | — | — | W31 | — | 0.5 | OEM-X1-56 | — | — | — |
| 1 | — | — | W32 | — | 0.5 | OEM-X2-2 | — | — | — |
| 1 | — | — | W33 | — | 0.5 | OEM-X2-3 | — | — | — |
| 1 | — | — | W34 | — | 0.5 | OEM-X2-41 | — | — | — |
| 1 | — | — | W35 | — | 0.5 | OEM-X2-43 | — | — | — |
| 1 | — | — | W36 | — | 0.5 | OEM-X2-44 | — | — | — |
| 1 | — | — | W37 | — | 0.5 | FT450-A-A14 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.5 | MAIN-R-COIL- | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-X1-73 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-X2-78 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-X2-79 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | FT450-A-A7 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-X1-1 | Park/Neutral signal (1786) | digital_in | — | — | — | single_source | |
| OEM-X1-10 | HO2S signal, bank 1 sensor 2 (post-cat) | lambda_nb_in | — | — | — | single_source | |
| OEM-X1-11 | HO2S low reference, bank 1 sensor 2 | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-12 | A/C refrigerant pressure signal | analog_in | — | — | — | corroborated | |
| OEM-X1-13 | A/C refrigerant pressure sensor low reference (5514) | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-16 | Fuel level sensor signal, primary (1589) | analog_in | — | — | — | single_source | |
| OEM-X1-17 | High speed cooling fan relay | low_side_out | FT450-A-A4 | Aux 2 | low_side_out | corroborated | |
| OEM-X1-18 | Accessory wakeup serial data (5985) | serial | — | — | — | single_source | |
| OEM-X1-19 | Ignition 1 voltage (key hot) | power_in | — | — | — | single_source | |
| OEM-X1-2 | 4WD low signal (1694) | digital_in | — | — | — | single_source | |
| OEM-X1-20 | Battery positive voltage (batt hot) | power_in | — | — | — | single_source | |
| OEM-X1-23 | APP sensor low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-24 | Fuel tank pressure signal | analog_in | — | — | — | corroborated | |
| OEM-X1-27 | High-speed GMLAN serial data bus - (2501) | can_l | FT450-A-A15 | CAN A LOW | can_l | single_source | |
| OEM-X1-28 | High-speed GMLAN serial data bus + (2500) | can_h | FT450-A-A16 | CAN A HIGH | can_h | single_source | |
| OEM-X1-29 | Accelerator pedal position (APP) sensor 1 signal | analog_in | FT450-A-A21 | White input 2 | analog_in | single_source | |
| OEM-X1-3 | Axle switch signal (1695) | digital_in | — | — | — | single_source | |
| OEM-X1-30 | APP sensor low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-31 | Fuel tank pressure sensor low reference (6049) | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-32 | Accelerator pedal position (APP) sensor 2 signal | analog_in | FT450-A-A25 | White input 6 (fuel pressure) | analog_in | single_source | |
| OEM-X1-33 | 5V reference (fuel tank pressure) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X1-34 | 5V reference (A/C pressure) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X1-36 | 5V reference (APP sensor) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X1-37 | Intake air temperature (IAT) signal | temp_in | FT450-A-A26 | White input 7 (air temp) | temp_in | corroborated | |
| OEM-X1-38 | Intake air temperature (IAT) low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-41 | Mass air flow (MAF) signal | analog_in | FT450-A-A20 | White input 1 | analog_in | corroborated | |
| OEM-X1-47 | Ignition 1 voltage (key hot) | power_in | — | — | — | single_source | |
| OEM-X1-48 | Tachometer output | tacho_out | — | — | — | corroborated | |
| OEM-X1-49 | HO2S low reference, bank 2 sensor 2 | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X1-50 | Fuel pump relay control (primary) | low_side_out | FT450-A-A6 | Aux 4 (fuel pump / relays) | low_side_out | corroborated | |
| OEM-X1-51 | Fuel pump relay control (secondary) | low_side_out | FT450-A-A5 | Aux 3 | low_side_out | corroborated | |
| OEM-X1-52 | Starter enable relay control | low_side_out | — | — | — | corroborated | |
| OEM-X1-56 | 5V reference (APP sensor) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X1-57 | VSS output to ABS (128k) | tacho_out | — | — | — | corroborated | |
| OEM-X1-58 | Low speed cooling fan relay | low_side_out | — | — | — | corroborated | |
| OEM-X1-59 | Powertrain relay coil control (main relay) | low_side_out | FT450-A-A3 | Aux 1 | low_side_out | corroborated | |
| OEM-X1-61 | EVAP canister vent solenoid | low_side_out | — | — | — | corroborated | |
| OEM-X1-63 | A/C compressor clutch relay | low_side_out | — | — | — | corroborated | |
| OEM-X1-64 | HO2S heater low control, bank 2 sensor 2 | low_side_out | — | — | — | single_source | |
| OEM-X1-65 | HO2S heater low control, bank 1 sensor 2 | low_side_out | — | — | — | single_source | |
| OEM-X1-68 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | corroborated | |
| OEM-X1-69 | HO2S signal, bank 2 sensor 2 (post-cat) | lambda_nb_in | — | — | — | single_source | |
| OEM-X1-70 | Secondary fuel level sensor signal (1937) | analog_in | — | — | — | single_source | |
| OEM-X1-71 | VSS high signal (manual trans) | digital_in | — | — | — | corroborated | |
| OEM-X1-72 | VSS low signal (manual trans) | digital_in | — | — | — | corroborated | |
| OEM-X1-73 | Power ground | ground | FT450-A-A7 + MAIN-R-COIL- | Power ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-X1-9 | Brake switch signal | digital_in | — | — | — | corroborated | |
| OEM-X2-10 | Cylinder shutoff solenoid 1 (AFM) | low_side_out | — | — | — | corroborated | |
| OEM-X2-11 | Cylinder shutoff solenoid 4 (AFM) | low_side_out | — | — | — | corroborated | |
| OEM-X2-12 | HO2S heater low control, bank 1 sensor 1 | low_side_out | — | — | — | single_source | |
| OEM-X2-13 | HO2S heater low control, bank 2 sensor 1 | low_side_out | — | — | — | single_source | |
| OEM-X2-14 | Cylinder shutoff solenoid 2 (AFM) | low_side_out | — | — | — | corroborated | |
| OEM-X2-16 | Camshaft actuator solenoid (VVT) | low_side_out | — | — | — | corroborated | |
| OEM-X2-17 | Injector 8 | injector_out | FT450-A-A2 | Injector 2 (Bank A) | injector_out | single_source | |
| OEM-X2-18 | Injector 5 | injector_out | FT450-A-A1 | Injector 1 (Bank A) | injector_out | single_source | |
| OEM-X2-19 | Injector 6 | injector_out | FT450-A-A2 | Injector 2 (Bank A) | injector_out | single_source | |
| OEM-X2-2 | 5V reference (crankshaft sensor) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X2-20 | Injector 1 | injector_out | FT450-A-A1 | Injector 1 (Bank A) | injector_out | single_source | |
| OEM-X2-21 | Engine coolant temperature (ECT) signal | temp_in | FT450-A-A24 | White input 5 (water temp) | temp_in | corroborated | |
| OEM-X2-22 | ECT low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-26 | Knock sensor 1 signal A | knock_in | — | — | — | corroborated | |
| OEM-X2-27 | Knock sensor 1 signal B | knock_in | — | — | — | single_source | |
| OEM-X2-29 | Knock sensor 2 signal A | knock_in | — | — | — | corroborated | |
| OEM-X2-3 | 5V reference (throttle body) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X2-30 | Knock sensor 2 signal B | knock_in | — | — | — | single_source | |
| OEM-X2-32 | Generator field duty control | low_side_out | — | — | — | corroborated | |
| OEM-X2-33 | Oil level switch signal | digital_in | — | — | — | corroborated | |
| OEM-X2-34 | Oil pressure low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-35 | Throttle body low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-37 | Injector 2 | injector_out | FT450-A-A2 | Injector 2 (Bank A) | injector_out | single_source | |
| OEM-X2-38 | Injector 3 | injector_out | FT450-A-A1 | Injector 1 (Bank A) | injector_out | single_source | |
| OEM-X2-39 | Injector 4 | injector_out | FT450-A-A2 | Injector 2 (Bank A) | injector_out | single_source | |
| OEM-X2-40 | Injector 7 | injector_out | FT450-A-A1 | Injector 1 (Bank A) | injector_out | single_source | |
| OEM-X2-41 | 5V reference (oil pressure) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X2-43 | 5V reference (MAP) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X2-44 | 5V reference (camshaft sensor) | vref | FT450-A-A14 | +5V sensor supply | vref | single_source | |
| OEM-X2-5 | Throttle actuator motor − (M−) | hbridge_out | — | — | — | corroborated | |
| OEM-X2-50 | Engine oil pressure signal | analog_in | — | — | — | corroborated | |
| OEM-X2-52 | Camshaft actuator low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-53 | MAP low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-56 | HO2S low reference, bank 1 sensor 1 | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-57 | HO2S signal, bank 1 sensor 1 (pre-cat) | lambda_nb_in | — | — | — | single_source | |
| OEM-X2-58 | Manifold absolute pressure (MAP) signal | analog_in | FT450-A-A23 | White input 4 (oil pressure) | analog_in | corroborated | |
| OEM-X2-59 | HO2S signal, bank 2 sensor 1 (pre-cat) | lambda_nb_in | — | — | — | single_source | |
| OEM-X2-6 | Throttle actuator motor + (M+) | hbridge_out | — | — | — | corroborated | |
| OEM-X2-60 | HO2S low reference, bank 2 sensor 1 | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-61 | Charge indicator signal | low_side_out | — | — | — | corroborated | |
| OEM-X2-63 | Throttle position sensor 2 signal | analog_in | — | — | — | single_source | |
| OEM-X2-64 | Camshaft position signal (4x) | trigger_in | FT450-A-A17 | Phase input (cam) | trigger_in | single_source | |
| OEM-X2-65 | Throttle position sensor 1 signal | analog_in | FT450-A-A22 | White input 3 (TPS) | analog_in | single_source | |
| OEM-X2-66 | Camshaft position low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-68 | Crankshaft position signal (58x) | trigger_in | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-69 | Crankshaft position low reference | sensor_ground | FT450-A-A12 + FT450-A-A18 | Signal ground + RPM reference (crank -) | sensor_ground + trigger_in | single_source | |
| OEM-X2-70 | Ignition coil 1 control | ignition_out | FT450-A-A8 | Ignition 1 | ignition_out | single_source | |
| OEM-X2-71 | Ignition coil 8 control | ignition_out | — | — | — | single_source | |
| OEM-X2-72 | Ignition coil 7 control | ignition_out | — | — | — | single_source | |
| OEM-X2-73 | Ignition coil 2 control | ignition_out | FT450-A-A9 | Ignition 2 | ignition_out | single_source | |
| OEM-X2-74 | Ignition coil 6 control | ignition_out | — | — | — | single_source | |
| OEM-X2-75 | Ignition coil 5 control | ignition_out | — | — | — | single_source | |
| OEM-X2-76 | Ignition coil 4 control | ignition_out | FT450-A-A11 | Ignition 4 | ignition_out | single_source | |
| OEM-X2-77 | Ignition coil 3 control | ignition_out | FT450-A-A10 | Ignition 3 | ignition_out | single_source | |
| OEM-X2-78 | Coil low reference (odd bank) | ground | FT450-A-A7 + MAIN-R-COIL- | Power ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-X2-79 | Coil low reference (even bank) | ground | FT450-A-A7 + MAIN-R-COIL- | Power ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-X2-8 | EVAP canister purge solenoid | low_side_out | — | — | — | corroborated | |
| OEM-X2-9 | Cylinder shutoff solenoid 3 (AFM) | low_side_out | — | — | — | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-X1-19 | SP-14V-1 | 0.85 | no route | Ignition 1 voltage (key hot) | — | |
| W2 | OEM-X1-47 | SP-14V-1 | 0.85 | no route | Ignition 1 voltage (key hot) | — | |
| W3 | NEW-KEYON-1 | MAIN-R-COIL+ | 0.5 | no route | Relay coil positive (ignition-switched +12V) | — | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 0.85 | no route | Relay contact input (battery + via main fuse) | — | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W6 | MAIN-R-OUT | FT450-A-A13 | 0.85 | no route | Relay contact output (switched +12V bus) | — | |
| W7 | OEM-X1-73 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-X2-78 | SP-GND-1 | 0.85 | no route | Coil low reference (odd bank) | — | |
| W9 | OEM-X2-79 | SP-GND-1 | 0.85 | no route | Coil low reference (even bank) | — | |
| W10 | SP-GND-1 | FT450-A-A7 | 0.85 | no route | Power ground | — | |
| W11 | OEM-X1-11 | SP-0V-1 | 0.5 | no route | HO2S low reference, bank 1 sensor 2 | — | |
| W12 | OEM-X1-13 | SP-0V-1 | 0.5 | no route | A/C refrigerant pressure sensor low reference (5514) | — | |
| W13 | OEM-X1-23 | SP-0V-1 | 0.5 | no route | APP sensor low reference | — | |
| W14 | OEM-X1-30 | SP-0V-1 | 0.5 | no route | APP sensor low reference | — | |
| W15 | OEM-X1-31 | SP-0V-1 | 0.5 | no route | Fuel tank pressure sensor low reference (6049) | — | |
| W16 | OEM-X1-38 | SP-0V-1 | 0.5 | no route | Intake air temperature (IAT) low reference | — | |
| W17 | OEM-X1-49 | SP-0V-1 | 0.5 | no route | HO2S low reference, bank 2 sensor 2 | — | |
| W18 | OEM-X2-22 | SP-0V-1 | 0.5 | no route | ECT low reference | — | |
| W19 | OEM-X2-34 | SP-0V-1 | 0.5 | no route | Oil pressure low reference | — | |
| W20 | OEM-X2-35 | SP-0V-1 | 0.5 | no route | Throttle body low reference | — | |
| W21 | OEM-X2-52 | SP-0V-1 | 0.5 | no route | Camshaft actuator low reference | — | |
| W22 | OEM-X2-53 | SP-0V-1 | 0.5 | no route | MAP low reference | — | |
| W23 | OEM-X2-56 | SP-0V-1 | 0.5 | no route | HO2S low reference, bank 1 sensor 1 | — | |
| W24 | OEM-X2-60 | SP-0V-1 | 0.5 | no route | HO2S low reference, bank 2 sensor 1 | — | |
| W25 | OEM-X2-66 | SP-0V-1 | 0.5 | no route | Camshaft position low reference | — | |
| W26 | OEM-X2-69 | SP-0V-1 | 0.5 | no route | Crankshaft position low reference | — | |
| W27 | SP-0V-1 | FT450-A-A12 | 0.5 | no route | Signal ground | — | |
| W28 | OEM-X1-33 | SP-5V1-1 | 0.5 | no route | 5V reference (fuel tank pressure) | — | |
| W29 | OEM-X1-34 | SP-5V1-1 | 0.5 | no route | 5V reference (A/C pressure) | — | |
| W30 | OEM-X1-36 | SP-5V1-1 | 0.5 | no route | 5V reference (APP sensor) | — | |
| W31 | OEM-X1-56 | SP-5V1-1 | 0.5 | no route | 5V reference (APP sensor) | — | |
| W32 | OEM-X2-2 | SP-5V1-1 | 0.5 | no route | 5V reference (crankshaft sensor) | — | |
| W33 | OEM-X2-3 | SP-5V1-1 | 0.5 | no route | 5V reference (throttle body) | — | |
| W34 | OEM-X2-41 | SP-5V1-1 | 0.5 | no route | 5V reference (oil pressure) | — | |
| W35 | OEM-X2-43 | SP-5V1-1 | 0.5 | no route | 5V reference (MAP) | — | |
| W36 | OEM-X2-44 | SP-5V1-1 | 0.5 | no route | 5V reference (camshaft sensor) | — | |
| W37 | SP-5V1-1 | FT450-A-A14 | 0.5 | no route | +5V sensor supply | — | |
| W38 | OEM-X2-68 | FT450-A-A18 | 0.5 | no route | Crankshaft position signal (58x) | — | |
| W39 | SP-0V-1 | FT450-A-A18 | 0.5 | no route | RPM reference (crank -) | — | |
| W40 | OEM-X2-64 | FT450-A-A17 | 0.5 | no route | Camshaft position signal (4x) | — | |
| W41 | OEM-X2-70 | FT450-A-A8 | 0.5 | no route | Ignition coil 1 control | — | |
| W42 | OEM-X2-73 | FT450-A-A9 | 0.5 | no route | Ignition coil 2 control | — | |
| W43 | OEM-X2-77 | FT450-A-A10 | 0.5 | no route | Ignition coil 3 control | — | |
| W44 | OEM-X2-76 | FT450-A-A11 | 0.5 | no route | Ignition coil 4 control | — | |
| W45 | OEM-X2-20 | FT450-A-A1 | 0.5 | no route | Injector 1 | — | |
| W46 | OEM-X2-37 | FT450-A-A2 | 0.5 | no route | Injector 2 | — | |
| W47 | OEM-X2-38 | FT450-A-A1 | 0.5 | no route | Injector 3 | — | |
| W48 | OEM-X2-39 | FT450-A-A2 | 0.5 | no route | Injector 4 | — | |
| W49 | OEM-X2-18 | FT450-A-A1 | 0.5 | no route | Injector 5 | — | |
| W50 | OEM-X2-19 | FT450-A-A2 | 0.5 | no route | Injector 6 | — | |
| W51 | OEM-X2-40 | FT450-A-A1 | 0.5 | no route | Injector 7 | — | |
| W52 | OEM-X2-17 | FT450-A-A2 | 0.5 | no route | Injector 8 | — | |
| W53 | OEM-X1-50 | FT450-A-A6 | 0.5 | no route | Fuel pump relay control (primary) | — | |
| W54 | OEM-X1-59 | FT450-A-A3 | 0.5 | no route | Powertrain relay coil control (main relay) | — | |
| W55 | OEM-X1-41 | FT450-A-A20 | 0.5 | no route | Mass air flow (MAF) signal | — | |
| W56 | OEM-X2-58 | FT450-A-A23 | 0.5 | no route | Manifold absolute pressure (MAP) signal | — | |
| W57 | OEM-X1-29 | FT450-A-A21 | 0.5 | no route | Accelerator pedal position (APP) sensor 1 signal | — | |
| W58 | OEM-X2-65 | FT450-A-A22 | 0.5 | no route | Throttle position sensor 1 signal | — | |
| W59 | OEM-X1-32 | FT450-A-A25 | 0.5 | no route | Accelerator pedal position (APP) sensor 2 signal | — | |
| W60 | OEM-X2-21 | FT450-A-A24 | 0.5 | no route | Engine coolant temperature (ECT) signal | — | |
| W61 | OEM-X1-17 | FT450-A-A4 | 0.5 | no route | High speed cooling fan relay | — | |
| W62 | OEM-X1-51 | FT450-A-A5 | 0.5 | no route | Fuel pump relay control (secondary) | — | |
| W63 | OEM-X1-37 | FT450-A-A26 | 0.5 | no route | Intake air temperature (IAT) signal | — | |
| W64 | OEM-X1-28 | FT450-A-A16 | 0.5 | no route | High-speed GMLAN serial data bus + (2500) | — | |
| W65 | OEM-X1-27 | FT450-A-A15 | 0.5 | no route | High-speed GMLAN serial data bus - (2501) | — |
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 (9)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-X2-5 | Required OEM function "Throttle actuator motor − (M−)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X2-6 | Required OEM function "Throttle actuator motor + (M+)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X2-63 | Required OEM function "Throttle position sensor 2 signal" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X2-71 | Required OEM function "Ignition coil 8 control" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X2-72 | Required OEM function "Ignition coil 7 control" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X2-74 | Required OEM function "Ignition coil 6 control" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X2-75 | Required OEM function "Ignition coil 5 control" (ignition_out) is not connected to the new ECU. |
| info | NET_FAMILY | OEM-X1-30 ↔ FT450-A-A18 | OEM-X1-30 "APP sensor low reference" [sensor_ground] is wired to FT450-A-A18 "RPM reference (crank -)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 40 optional OEM pins are not mapped: OEM-X1-1 Park/Neutral signal (1786); OEM-X1-10 HO2S signal, bank 1 sensor 2 (post-cat); OEM-X1-12 A/C refrigerant pressure signal; OEM-X1-16 Fuel level sensor signal, primary (1589); OEM-X1-18 Accessory wakeup serial data (5985); OEM-X1-2 4WD low signal (1694); OEM-X1-24 Fuel tank pressure signal; OEM-X1-3 Axle switch signal (1695); OEM-X1-48 Tachometer output; OEM-X1-52 Starter enable relay control; OEM-X1-57 VSS output to ABS (128k); OEM-X1-58 Low speed cooling fan relay; OEM-X1-61 EVAP canister vent solenoid; OEM-X1-63 A/C compressor clutch relay; OEM-X1-64 HO2S heater low control, bank 2 sensor 2; OEM-X1-65 HO2S heater low control, bank 1 sensor 2; OEM-X1-68 Malfunction indicator lamp (MIL); OEM-X1-69 HO2S signal, bank 2 sensor 2 (post-cat); OEM-X1-70 Secondary fuel level sensor signal (1937); OEM-X1-71 VSS high signal (manual trans); OEM-X1-72 VSS low signal (manual trans); OEM-X1-9 Brake switch signal; OEM-X2-10 Cylinder shutoff solenoid 1 (AFM); OEM-X2-11 Cylinder shutoff solenoid 4 (AFM); OEM-X2-12 HO2S heater low control, bank 1 sensor 1; OEM-X2-13 HO2S heater low control, bank 2 sensor 1; OEM-X2-14 Cylinder shutoff solenoid 2 (AFM); OEM-X2-16 Camshaft actuator solenoid (VVT); OEM-X2-26 Knock sensor 1 signal A; OEM-X2-27 Knock sensor 1 signal B; OEM-X2-29 Knock sensor 2 signal A; OEM-X2-30 Knock sensor 2 signal B; OEM-X2-32 Generator field duty control; OEM-X2-33 Oil level switch signal; OEM-X2-50 Engine oil pressure signal; OEM-X2-57 HO2S signal, bank 1 sensor 1 (pre-cat); OEM-X2-59 HO2S signal, bank 2 sensor 1 (pre-cat); OEM-X2-61 Charge indicator signal; OEM-X2-8 EVAP canister purge solenoid; OEM-X2-9 Cylinder shutoff solenoid 3 (AFM) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-X1-20 | 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 - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 8 cylinders: wasted spark (pair coils per firing order) - Only 6 injector outputs for 8 injectors: batch / semi-sequential injection Auto-mapped by auto_map() from the library pin data on 2026-10-20. Review every wire against both manuals before building. Open items: - OEM-X2 75: Ignition coil 5 control: no free ignition output on FuelTech FT450 - OEM-X2 74: Ignition coil 6 control: no free ignition output on FuelTech FT450 - OEM-X2 72: Ignition coil 7 control: no free ignition output on FuelTech FT450 - OEM-X2 71: Ignition coil 8 control: no free ignition output on FuelTech FT450 - OEM-X2 5: Throttle actuator motor − (M−): needs a paired H-bridge on FuelTech FT450 (H-bridge pairing not in the library: set device_pin.bridge_pair from the ECU manual) - OEM-X2 6: Throttle actuator motor + (M+): needs a paired H-bridge on FuelTech FT450 (H-bridge pairing not in the library: set device_pin.bridge_pair from the ECU manual) - OEM-X2 63: Throttle position sensor 2 signal: no free tps/analog_0_5 on FuelTech FT450 Not wired: - OEM-X1 20: Battery positive voltage (batt hot): FuelTech FT450 has no battery-constant memory input; not needed - OEM-X2 26: Knock sensor 1 signal A: no free knock input on FuelTech FT450 - OEM-X2 27: Knock sensor 1 signal B: no free knock input on FuelTech FT450 - OEM-X2 29: Knock sensor 2 signal A: no free knock input on FuelTech FT450 - OEM-X2 30: Knock sensor 2 signal B: no free knock input on FuelTech FT450 - OEM-X1 52: Starter enable relay control: no free relay_control/low_side/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X1 58: Low speed cooling fan relay: no free relay_control/low_side/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X1 63: A/C compressor clutch relay: no free relay_control/low_side/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X1 64: HO2S heater low control, bank 2 sensor 2: no free heater_low_side/low_side/relay_control/ls_hs/injector on FuelTech FT450 - OEM-X1 65: HO2S heater low control, bank 1 sensor 2: no free heater_low_side/low_side/relay_control/ls_hs/injector on FuelTech FT450 - OEM-X2 12: HO2S heater low control, bank 1 sensor 1: no free heater_low_side/low_side/relay_control/ls_hs/injector on FuelTech FT450 - OEM-X2 13: HO2S heater low control, bank 2 sensor 1: no free heater_low_side/low_side/relay_control/ls_hs/injector on FuelTech FT450 - OEM-X2 10: Cylinder shutoff solenoid 1 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 14: Cylinder shutoff solenoid 2 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 9: Cylinder shutoff solenoid 3 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 11: Cylinder shutoff solenoid 4 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X1 61: EVAP canister vent solenoid: no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X1 68: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 16: Camshaft actuator solenoid (VVT): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 32: Generator field duty control: no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 61: Charge indicator signal: no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X2 8: EVAP canister purge solenoid: no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-X1 48: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on FuelTech FT450 - OEM-X1 57: VSS output to ABS (128k): no free frequency_out/tacho/low_side/ls_hs on FuelTech FT450 - OEM-X1 10: HO2S signal, bank 1 sensor 2 (post-cat): no free o2_narrowband/analog_0_5 on FuelTech FT450 - OEM-X1 69: HO2S signal, bank 2 sensor 2 (post-cat): no free o2_narrowband/analog_0_5 on FuelTech FT450 - OEM-X2 57: HO2S signal, bank 1 sensor 1 (pre-cat): no free o2_narrowband/analog_0_5 on FuelTech FT450 - OEM-X2 59: HO2S signal, bank 2 sensor 1 (pre-cat): no free o2_narrowband/analog_0_5 on FuelTech FT450 - OEM-X1 12: A/C refrigerant pressure signal: no free analog_0_5 on FuelTech FT450 - OEM-X1 16: Fuel level sensor signal, primary (1589): no free analog_0_5 on FuelTech FT450 - OEM-X1 24: Fuel tank pressure signal: no free analog_0_5 on FuelTech FT450 - OEM-X1 70: Secondary fuel level sensor signal (1937): no free analog_0_5 on FuelTech FT450 - OEM-X2 50: Engine oil pressure signal: no free analog_0_5 on FuelTech FT450 - OEM-X1 71: VSS high signal (manual trans): no free frequency_in/switch_in on FuelTech FT450 - OEM-X1 72: VSS low signal (manual trans): no free frequency_in/switch_in on FuelTech FT450 - OEM-X1 2: 4WD low signal (1694): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-X1 1: Park/Neutral signal (1786): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-X1 3: Axle switch signal (1695): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-X1 9: Brake switch signal: no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-X2 33: Oil level switch signal: no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-X1 18: Accessory wakeup serial data (5985): no free k_line on FuelTech FT450
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Emtron SL4/SL6/SL8 pinout pages | https://docs.emtronaustralia.com.au/engine-management/wiring/index.html | archive | 2026-10-05 | e52b3da9996a |
| 4 | vendor_doc | FuelTech FT450/FT550 ready harness manual (4 & 6 cylinder) — FT450 Connector A pinout | http://ftmanager.fueltech.com.br/downloads/manual/Portugues/Chicote_pronto_FT450-FT550.pdf | — | — | — |
| 4 | vendor_doc | MaxxECU webhelp: Wiring — plug-in ECU Chevrolet Corvette C6 (GM E38 ECM) | http://www.maxxecu.com/webhelp/wirings-pluginecu-chevrolet_corvette_c6_e38_ecm.html | — | — | — |
| 3 | forum | rusEFI Mazda Miata 2002 engine wiring | https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2002 | archive | 2026-10-05 | cc3cae670408 |
| 2 | community_copy | lt1swap.com: E38 ECM Connector Pinouts | https://lt1swap.com/E38 ECM Connector Pinouts.htm | — | — | — |