RSX Type-S 2002-04 (K20A2) → MaxxECU MaxxECU SPORT REV9+ (auto)
RSX Type-S 2002-04 (K20A2) — MaxxECU — MaxxECU SPORT
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 1: read the Findings page before cutting any wire |
| Size of the job | 52 wires · 8 connectors · 4 part lines |
| Tools | 715131-1 · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 316836-1 |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MAXXECUSPORT-C1-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-23 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-24 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUSPORT-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-10 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-E-4 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | MAXXECUSPORT-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MAXXECUSPORT-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-E-5 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-5V1-1 | MAXXECUSPORT-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A-7 | MAXXECUSPORT-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-25 | MAXXECUSPORT-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-30 | MAXXECUSPORT-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-29 | MAXXECUSPORT-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-28 | MAXXECUSPORT-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-27 | MAXXECUSPORT-C1-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-B-5 | MAXXECUSPORT-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B-4 | MAXXECUSPORT-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-3 | MAXXECUSPORT-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-2 | MAXXECUSPORT-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-E-7 | MAXXECUSPORT-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-6 | MAXXECUSPORT-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E-1 | MAXXECUSPORT-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E-18 | MAXXECUSPORT-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E-8 | MAXXECUSPORT-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E-6 | MAXXECUSPORT-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-1 | MAXXECUSPORT-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-12 | MAXXECUSPORT-C1-M3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B-15 | MAXXECUSPORT-C1-L3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B-1 | MAXXECUSPORT-C1-L1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B-18 | MAXXECUSPORT-C1-L2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-6 | MAXXECUSPORT-C1-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-16 | MAXXECUSPORT-C1-F4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-19 | MAXXECUSPORT-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-15 | MAXXECUSPORT-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-E-2 | MAXXECUSPORT-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B-8 | MAXXECUSPORT-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-B-17 | MAXXECUSPORT-C1-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-B-13 | MAXXECUSPORT-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-E-14 | MAXXECUSPORT-C1-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-E-15 | MAXXECUSPORT-C1-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-18 | MAXXECUSPORT-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-B-10 | MAXXECUSPORT-C1-K4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-B-9 | MAXXECUSPORT-C1-E4 | 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 | MAXXECUSPORT-C1-M4 | MAXXECUSPORT-C1-H1 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MAXXECUSPORT-C1-M4 | MAXXECUSPORT-C1-L4 | open (OL) | +12 V supply must not touch power ground | |
| 3 | MAXXECUSPORT-C1-H1 | MAXXECUSPORT-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 4 | MAXXECUSPORT-C1-L4 | MAXXECUSPORT-C1-G1 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | MAXXECUSPORT-C1-M4 | MAXXECUSPORT-C1-G1 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECUSPORT-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | GPO 4 | — | W32 | — | 0.5 | OEM-E-18 | — | — | — |
| A2 | IGN 1 | — | W21 | — | 0.5 | OEM-A-30 | — | — | — |
| A3 | IGN 2 | — | W22 | — | 0.5 | OEM-A-29 | — | — | — |
| A4 | GPO 8/TACHO | — | W35 | — | 0.5 | OEM-A-1 | — | — | — |
| B1 | GPO 5 | — | W33 | — | 0.5 | OEM-E-8 | — | — | — |
| B2 | IGN 3 | — | W23 | — | 0.5 | OEM-A-28 | — | — | — |
| B3 | IGN 4 | — | W24 | — | 0.5 | OEM-A-27 | — | — | — |
| B4 | GPO 1 | — | W29 | — | 0.5 | OEM-E-7 | — | — | — |
| C1 | AIN 5 (0-5V) | — | W47 | — | 0.5 | OEM-B-13 | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W30 | — | 0.5 | OEM-B-6 | — | — | — |
| D1 | WBO2 Heater- | — | W34 | — | 0.5 | OEM-E-6 | — | — | — |
| D2 | AIN 6 (0-5V) | — | W48 | — | 0.5 | OEM-E-14 | — | — | — |
| D3 | AIN 7 (0-5V) | — | W49 | — | 0.5 | OEM-E-15 | — | — | — |
| D4 | GPO 3 | — | W31 | — | 0.5 | OEM-E-1 | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | AIN 8 (0-5V) | — | W52 | — | 0.5 | OEM-B-9 | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | W41 | — | 0.5 | OEM-A-16 | — | — | — |
| G1 | +5V sensor supply | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| G2 | TPS/AIN | — | W43 | — | 0.5 | OEM-A-15 | — | — | — |
| G3 | WBO2 IP | — | W40 | — | 0.5 | OEM-A-6 | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W19 | — | 0.5 | OEM-A-7 | — | — | — |
| H4 | HOME | — | W20 | — | 0.5 | OEM-A-25 | — | — | — |
| J1 | AIN 1 (temperature) | — | W45 | — | 0.5 | OEM-B-8 | — | — | — |
| J2 | AIN 2 (Temperature) | — | W46 | — | 0.5 | OEM-B-17 | — | — | — |
| J3 | AIN 3 (0-5V) | — | W42 | — | 0.5 | OEM-A-19 | — | — | — |
| J4 | AIN 4 (0-5V) | — | W44 | — | 0.5 | OEM-E-2 | — | — | — |
| K1 | INJ 1 | — | W25 | — | 0.5 | OEM-B-5 | — | — | — |
| K2 | INJ 2 | — | W26 | — | 0.5 | OEM-B-4 | — | — | — |
| K3 | DIN 1 | — | W50 | — | 0.5 | OEM-A-18 | — | — | — |
| K4 | DIN 2 | — | W51 | — | 0.5 | OEM-B-10 | — | — | — |
| L1 | GPO 11/Motor 1- | — | W38 | — | 0.5 | OEM-B-1 | — | — | — |
| L2 | GPO 12/MOTOR 1+ | — | W39 | — | 0.5 | OEM-B-18 | — | — | — |
| L3 | INJ 6 | — | W37 | — | 0.5 | OEM-B-15 | — | — | — |
| L4 | Engine GND | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W27 | — | 0.5 | OEM-B-3 | — | — | — |
| M2 | INJ 4 | — | W28 | — | 0.5 | OEM-B-2 | — | — | — |
| M3 | INJ 5 | — | W36 | — | 0.5 | OEM-A-12 | — | — | — |
| M4 | +12V ECU power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/F sensor heater control (AFSHTC) | — | W35 | — | 0.5 | MAXXECUSPORT-C1-A4 | — | — | — |
| 2 | Ignition power 2 (IGP2) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 (IGP1) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 (PG2) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 (PG1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | A/F sensor + (AFS+, wideband Ip) | — | W40 | — | 0.5 | MAXXECUSPORT-C1-G3 | — | — | — |
| 7 | Crank position sensor (CKP) | — | W19 | — | 0.5 | MAXXECUSPORT-C1-H3 | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | Knock sensor (KS) | — | — | — | — | — | — | — | — |
| 10 | Sensor ground 2 (SG2) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | Sensor ground 1 (SG1) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Idle air control valve (IACV) | — | W36 | — | 0.5 | MAXXECUSPORT-C1-M3 | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | Throttle position sensor (TPS) | — | W43 | — | 0.5 | MAXXECUSPORT-C1-G2 | — | — | — |
| 16 | A/F sensor - (AFS-, wideband Vs) | — | W41 | — | 0.5 | MAXXECUSPORT-C1-F4 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | Vehicle speed sensor (VSS, M/T) | — | W50 | — | 0.5 | MAXXECUSPORT-C1-K3 | — | — | — |
| 19 | Manifold absolute pressure (MAP) | — | W42 | — | 0.5 | MAXXECUSPORT-C1-J3 | — | — | — |
| 20 | Sensor 5V supply 2 (VCC2) | — | W15 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor 5V supply 1 (VCC1) | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | A/F sensor heater supply (AFSHTC+) | — | — | — | — | — | — | — | — |
| 23 | Logic ground 2 (LG2) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | Logic ground 1 (LG1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Camshaft position A (CMP A) | — | W20 | — | 0.5 | MAXXECUSPORT-C1-H4 | — | — | — |
| 26 | Camshaft position B (CMP B) | — | — | — | — | — | — | — | — |
| 27 | Ignition coil 4 (IGPLS4) | — | W24 | — | 0.5 | MAXXECUSPORT-C1-B3 | — | — | — |
| 28 | Ignition coil 3 (IGPLS3) | — | W23 | — | 0.5 | MAXXECUSPORT-C1-B2 | — | — | — |
| 29 | Ignition coil 2 (IGPLS2) | — | W22 | — | 0.5 | MAXXECUSPORT-C1-A3 | — | — | — |
| 30 | Ignition coil 1 (IGPLS1) | — | W21 | — | 0.5 | MAXXECUSPORT-C1-A2 | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTC oil control solenoid (+) | — | W38 | — | 0.5 | MAXXECUSPORT-C1-L1 | — | — | — |
| 2 | Injector 4 (INJ4) | — | W28 | — | 0.5 | MAXXECUSPORT-C1-M2 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W27 | — | 0.5 | MAXXECUSPORT-C1-M1 | — | — | — |
| 4 | Injector 2 (INJ2) | — | W26 | — | 0.5 | MAXXECUSPORT-C1-K2 | — | — | — |
| 5 | Injector 1 (INJ1) | — | W25 | — | 0.5 | MAXXECUSPORT-C1-K1 | — | — | — |
| 6 | Radiator fan control (FANC) | — | W30 | — | 0.5 | MAXXECUSPORT-C1-C4 | — | — | — |
| 7 | Reverse lockout solenoid (RVS, Type-S) | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor (ECT) | — | W45 | — | 0.5 | MAXXECUSPORT-C1-J1 | — | — | — |
| 9 | VTEC oil pressure switch (VTPSW) | — | W52 | — | 0.5 | MAXXECUSPORT-C1-E4 | — | — | — |
| 10 | Alternator L signal (ALTL) | — | W51 | — | 0.5 | MAXXECUSPORT-C1-K4 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal (ALTF) | — | W47 | — | 0.5 | MAXXECUSPORT-C1-C1 | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | VTEC solenoid (VTS) | — | W37 | — | 0.5 | MAXXECUSPORT-C1-L3 | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor (IAT) | — | W46 | — | 0.5 | MAXXECUSPORT-C1-J2 | — | — | — |
| 18 | Alternator control (ALTC) | — | W39 | — | 0.5 | MAXXECUSPORT-C1-L2 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve (PCS) | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | VTC oil control solenoid (-) | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
OEM-E
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Immobilizer fuel pump relay (IMO FPR) | — | W31 | — | 0.5 | MAXXECUSPORT-C1-D4 | — | — | — |
| 2 | Secondary heated O2 sensor (SHO2S) | — | W44 | — | 0.5 | MAXXECUSPORT-C1-J4 | — | — | — |
| 3 | Logic ground 3 (LG3) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Sensor ground 3 (SG3) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor 5V supply 3 (VCC3) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 6 | Secondary O2 heater control (SO2SHTC) | — | W34 | — | 0.5 | MAXXECUSPORT-C1-D1 | — | — | — |
| 7 | Main relay control (MRLY) | — | W29 | — | 0.5 | MAXXECUSPORT-C1-B4 | — | — | — |
| 8 | A/F sensor heater relay control (AFSHTCR) | — | W33 | — | 0.5 | MAXXECUSPORT-C1-B1 | — | — | — |
| 9 | Ignition switch signal (IG1) | — | — | — | — | — | — | — | — |
| 10 | — | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor (FTP) | — | W48 | — | 0.5 | MAXXECUSPORT-C1-D2 | — | — | — |
| 15 | Electrical load detector (ELD) | — | W49 | — | 0.5 | MAXXECUSPORT-C1-D3 | — | — | — |
| 16 | Power steering pressure switch (PSPSW) | — | — | — | — | — | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | A/C clutch relay (ACC) | — | W32 | — | 0.5 | MAXXECUSPORT-C1-A1 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | Brake switch / interlock (2WBS) | — | — | — | — | — | — | — | — |
| 21 | Evap vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 22 | Brake switch (BKSW) | — | — | — | — | — | — | — | — |
| 23 | K-line (diagnostic) | — | — | — | — | — | — | — | — |
| 24 | Multiplex communication (SEFMJ) | — | — | — | — | — | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — |
| 26 | Engine speed pulse / tacho (NEP) | — | — | — | — | — | — | — | — |
| 27 | Immobilizer code (IMOCD) | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | Service check signal (SCS) | — | — | — | — | — | — | — | — |
| 30 | Write enable signal (WEN) | — | — | — | — | — | — | — | — |
| 31 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-A-11 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-A-10 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-E-4 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | MAXXECUSPORT-C1-H1 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MAXXECUSPORT-C1-H2 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-2 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A-3 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MAXXECUSPORT-C1-M4 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MAXXECUSPORT-C1-G1 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-24 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E-3 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUSPORT-C1-L4 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | A/F sensor heater control (AFSHTC) | low_side_out | MAXXECUSPORT-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-A-10 | Sensor ground 2 (SG2) | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | corroborated | |
| OEM-A-11 | Sensor ground 1 (SG1) | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | corroborated | |
| OEM-A-12 | Idle air control valve (IACV) | low_side_out | MAXXECUSPORT-C1-M3 | INJ 5 | injector_out | corroborated | |
| OEM-A-15 | Throttle position sensor (TPS) | analog_in | MAXXECUSPORT-C1-G2 | TPS/AIN | analog_in | corroborated | |
| OEM-A-16 | A/F sensor - (AFS-, wideband Vs) | wb_vs | MAXXECUSPORT-C1-F4 | WBO2 VS | wb_vs | single_source | |
| OEM-A-18 | Vehicle speed sensor (VSS, M/T) | digital_in | MAXXECUSPORT-C1-K3 | DIN 1 | digital_in | corroborated | |
| OEM-A-19 | Manifold absolute pressure (MAP) | analog_in | MAXXECUSPORT-C1-J3 | AIN 3 (0-5V) | analog_in | corroborated | |
| OEM-A-2 | Ignition power 2 (IGP2) | power_in | MAXXECUSPORT-C1-M4 | +12V ECU power supply | power_in | corroborated | |
| OEM-A-20 | Sensor 5V supply 2 (VCC2) | vref | MAXXECUSPORT-C1-G1 | +5V sensor supply | vref | corroborated | |
| OEM-A-21 | Sensor 5V supply 1 (VCC1) | vref | MAXXECUSPORT-C1-G1 | +5V sensor supply | vref | corroborated | |
| OEM-A-22 | A/F sensor heater supply (AFSHTC+) | power_out | — | — | — | single_source | |
| OEM-A-23 | Logic ground 2 (LG2) | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | corroborated | |
| OEM-A-24 | Logic ground 1 (LG1) | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | corroborated | |
| OEM-A-25 | Camshaft position A (CMP A) | trigger_in | MAXXECUSPORT-C1-H4 | HOME | trigger_in | single_source | |
| OEM-A-26 | Camshaft position B (CMP B) | trigger_in | — | — | — | single_source | |
| OEM-A-27 | Ignition coil 4 (IGPLS4) | ignition_out | MAXXECUSPORT-C1-B3 | IGN 4 | ignition_out | corroborated | |
| OEM-A-28 | Ignition coil 3 (IGPLS3) | ignition_out | MAXXECUSPORT-C1-B2 | IGN 3 | ignition_out | corroborated | |
| OEM-A-29 | Ignition coil 2 (IGPLS2) | ignition_out | MAXXECUSPORT-C1-A3 | IGN 2 | ignition_out | corroborated | |
| OEM-A-3 | Ignition power 1 (IGP1) | power_in | MAXXECUSPORT-C1-M4 | +12V ECU power supply | power_in | corroborated | |
| OEM-A-30 | Ignition coil 1 (IGPLS1) | ignition_out | MAXXECUSPORT-C1-A2 | IGN 1 | ignition_out | corroborated | |
| OEM-A-4 | Power ground 2 (PG2) | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | corroborated | |
| OEM-A-5 | Power ground 1 (PG1) | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | corroborated | |
| OEM-A-6 | A/F sensor + (AFS+, wideband Ip) | wb_ip | MAXXECUSPORT-C1-G3 | WBO2 IP | wb_ip | single_source | |
| OEM-A-7 | Crank position sensor (CKP) | trigger_in | MAXXECUSPORT-C1-H3 | TRIGGER | trigger_in | corroborated | |
| OEM-A-9 | Knock sensor (KS) | knock_in | — | — | — | corroborated | |
| OEM-B-1 | VTC oil control solenoid (+) | low_side_out | MAXXECUSPORT-C1-L1 | GPO 11/Motor 1- | hbridge_out | corroborated | |
| OEM-B-10 | Alternator L signal (ALTL) | digital_in | MAXXECUSPORT-C1-K4 | DIN 2 | digital_in | single_source | |
| OEM-B-13 | Alternator FR signal (ALTF) | analog_in | MAXXECUSPORT-C1-C1 | AIN 5 (0-5V) | analog_in | single_source | |
| OEM-B-15 | VTEC solenoid (VTS) | low_side_out | MAXXECUSPORT-C1-L3 | INJ 6 | injector_out | single_source | |
| OEM-B-17 | Intake air temp sensor (IAT) | temp_in | MAXXECUSPORT-C1-J2 | AIN 2 (Temperature) | temp_in | corroborated | |
| OEM-B-18 | Alternator control (ALTC) | low_side_out | MAXXECUSPORT-C1-L2 | GPO 12/MOTOR 1+ | hbridge_out | corroborated | |
| OEM-B-2 | Injector 4 (INJ4) | injector_out | MAXXECUSPORT-C1-M2 | INJ 4 | injector_out | corroborated | |
| OEM-B-21 | Evap canister purge valve (PCS) | low_side_out | — | — | — | corroborated | |
| OEM-B-23 | VTC oil control solenoid (-) | low_side_out | — | — | — | corroborated | |
| OEM-B-3 | Injector 3 (INJ3) | injector_out | MAXXECUSPORT-C1-M1 | INJ 3 | injector_out | corroborated | |
| OEM-B-4 | Injector 2 (INJ2) | injector_out | MAXXECUSPORT-C1-K2 | INJ 2 | injector_out | corroborated | |
| OEM-B-5 | Injector 1 (INJ1) | injector_out | MAXXECUSPORT-C1-K1 | INJ 1 | injector_out | corroborated | |
| OEM-B-6 | Radiator fan control (FANC) | low_side_out | MAXXECUSPORT-C1-C4 | GPO 2 | low_side_out | corroborated | |
| OEM-B-7 | Reverse lockout solenoid (RVS, Type-S) | low_side_out | — | — | — | corroborated | |
| OEM-B-8 | Coolant temp sensor (ECT) | temp_in | MAXXECUSPORT-C1-J1 | AIN 1 (temperature) | temp_in | corroborated | |
| OEM-B-9 | VTEC oil pressure switch (VTPSW) | digital_in | MAXXECUSPORT-C1-E4 | AIN 8 (0-5V) | analog_in | corroborated | |
| OEM-E-1 | Immobilizer fuel pump relay (IMO FPR) | low_side_out | MAXXECUSPORT-C1-D4 | GPO 3 | low_side_out | corroborated | |
| OEM-E-14 | Fuel tank pressure sensor (FTP) | analog_in | MAXXECUSPORT-C1-D2 | AIN 6 (0-5V) | analog_in | corroborated | |
| OEM-E-15 | Electrical load detector (ELD) | analog_in | MAXXECUSPORT-C1-D3 | AIN 7 (0-5V) | analog_in | corroborated | |
| OEM-E-16 | Power steering pressure switch (PSPSW) | digital_in | — | — | — | corroborated | |
| OEM-E-18 | A/C clutch relay (ACC) | low_side_out | MAXXECUSPORT-C1-A1 | GPO 4 | low_side_out | corroborated | |
| OEM-E-2 | Secondary heated O2 sensor (SHO2S) | lambda_nb_in | MAXXECUSPORT-C1-J4 | AIN 4 (0-5V) | analog_in | corroborated | |
| OEM-E-20 | Brake switch / interlock (2WBS) | digital_in | — | — | — | single_source | |
| OEM-E-21 | Evap vent shut valve (VSV) | low_side_out | — | — | — | corroborated | |
| OEM-E-22 | Brake switch (BKSW) | digital_in | — | — | — | corroborated | |
| OEM-E-23 | K-line (diagnostic) | serial | — | — | — | single_source | |
| OEM-E-24 | Multiplex communication (SEFMJ) | serial | — | — | — | corroborated | |
| OEM-E-26 | Engine speed pulse / tacho (NEP) | tacho_out | — | — | — | corroborated | |
| OEM-E-27 | Immobilizer code (IMOCD) | — | — | — | — | single_source | |
| OEM-E-29 | Service check signal (SCS) | — | — | — | — | single_source | |
| OEM-E-3 | Logic ground 3 (LG3) | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | corroborated | |
| OEM-E-30 | Write enable signal (WEN) | — | — | — | — | single_source | |
| OEM-E-31 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | corroborated | |
| OEM-E-4 | Sensor ground 3 (SG3) | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | corroborated | |
| OEM-E-5 | Sensor 5V supply 3 (VCC3) | vref | MAXXECUSPORT-C1-G1 | +5V sensor supply | vref | corroborated | |
| OEM-E-6 | Secondary O2 heater control (SO2SHTC) | low_side_out | MAXXECUSPORT-C1-D1 | WBO2 Heater- | low_side_out | corroborated | |
| OEM-E-7 | Main relay control (MRLY) | low_side_out | MAXXECUSPORT-C1-B4 | GPO 1 | low_side_out | corroborated | |
| OEM-E-8 | A/F sensor heater relay control (AFSHTCR) | low_side_out | MAXXECUSPORT-C1-B1 | GPO 5 | low_side_out | corroborated | |
| OEM-E-9 | Ignition switch signal (IG1) | digital_in | — | — | — | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | no route | Ignition power 2 (IGP2) | — | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | no route | Ignition power 1 (IGP1) | — | |
| W3 | SP-14V-1 | MAXXECUSPORT-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W4 | OEM-A-23 | SP-GND-1 | 0.85 | no route | Logic ground 2 (LG2) | — | |
| W5 | OEM-A-24 | SP-GND-1 | 0.85 | no route | Logic ground 1 (LG1) | — | |
| W6 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 (PG2) | — | |
| W7 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 (PG1) | — | |
| W8 | OEM-E-3 | SP-GND-1 | 0.85 | no route | Logic ground 3 (LG3) | — | |
| W9 | SP-GND-1 | MAXXECUSPORT-C1-L4 | 0.85 | no route | Engine GND | — | |
| W10 | OEM-A-10 | SP-0V-1 | 0.5 | no route | Sensor ground 2 (SG2) | — | |
| W11 | OEM-A-11 | SP-0V-1 | 0.5 | no route | Sensor ground 1 (SG1) | — | |
| W12 | OEM-E-4 | SP-0V-1 | 0.5 | no route | Sensor ground 3 (SG3) | — | |
| W13 | SP-0V-1 | MAXXECUSPORT-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W14 | SP-0V-1 | MAXXECUSPORT-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W15 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 (VCC2) | — | |
| W16 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (VCC1) | — | |
| W17 | OEM-E-5 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 3 (VCC3) | — | |
| W18 | SP-5V1-1 | MAXXECUSPORT-C1-G1 | 0.5 | no route | +5V sensor supply | — | |
| W19 | OEM-A-7 | MAXXECUSPORT-C1-H3 | 0.5 | no route | Crank position sensor (CKP) | — | |
| W20 | OEM-A-25 | MAXXECUSPORT-C1-H4 | 0.5 | no route | Camshaft position A (CMP A) | — | |
| W21 | OEM-A-30 | MAXXECUSPORT-C1-A2 | 0.5 | no route | Ignition coil 1 (IGPLS1) | — | |
| W22 | OEM-A-29 | MAXXECUSPORT-C1-A3 | 0.5 | no route | Ignition coil 2 (IGPLS2) | — | |
| W23 | OEM-A-28 | MAXXECUSPORT-C1-B2 | 0.5 | no route | Ignition coil 3 (IGPLS3) | — | |
| W24 | OEM-A-27 | MAXXECUSPORT-C1-B3 | 0.5 | no route | Ignition coil 4 (IGPLS4) | — | |
| W25 | OEM-B-5 | MAXXECUSPORT-C1-K1 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W26 | OEM-B-4 | MAXXECUSPORT-C1-K2 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W27 | OEM-B-3 | MAXXECUSPORT-C1-M1 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W28 | OEM-B-2 | MAXXECUSPORT-C1-M2 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W29 | OEM-E-7 | MAXXECUSPORT-C1-B4 | 0.5 | no route | Main relay control (MRLY) | — | |
| W30 | OEM-B-6 | MAXXECUSPORT-C1-C4 | 0.5 | no route | Radiator fan control (FANC) | — | |
| W31 | OEM-E-1 | MAXXECUSPORT-C1-D4 | 0.5 | no route | Immobilizer fuel pump relay (IMO FPR) | — | |
| W32 | OEM-E-18 | MAXXECUSPORT-C1-A1 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W33 | OEM-E-8 | MAXXECUSPORT-C1-B1 | 0.5 | no route | A/F sensor heater relay control (AFSHTCR) | — | |
| W34 | OEM-E-6 | MAXXECUSPORT-C1-D1 | 0.5 | no route | Secondary O2 heater control (SO2SHTC) | — | |
| W35 | OEM-A-1 | MAXXECUSPORT-C1-A4 | 0.5 | no route | A/F sensor heater control (AFSHTC) | — | |
| W36 | OEM-A-12 | MAXXECUSPORT-C1-M3 | 0.5 | no route | Idle air control valve (IACV) | — | |
| W37 | OEM-B-15 | MAXXECUSPORT-C1-L3 | 0.5 | no route | VTEC solenoid (VTS) | — | |
| W38 | OEM-B-1 | MAXXECUSPORT-C1-L1 | 0.5 | no route | VTC oil control solenoid (+) | — | |
| W39 | OEM-B-18 | MAXXECUSPORT-C1-L2 | 0.5 | no route | Alternator control (ALTC) | — | |
| W40 | OEM-A-6 | MAXXECUSPORT-C1-G3 | 0.5 | no route | A/F sensor + (AFS+, wideband Ip) | — | |
| W41 | OEM-A-16 | MAXXECUSPORT-C1-F4 | 0.5 | no route | A/F sensor - (AFS-, wideband Vs) | — | |
| W42 | OEM-A-19 | MAXXECUSPORT-C1-J3 | 0.5 | no route | Manifold absolute pressure (MAP) | — | |
| W43 | OEM-A-15 | MAXXECUSPORT-C1-G2 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W44 | OEM-E-2 | MAXXECUSPORT-C1-J4 | 0.5 | no route | Secondary heated O2 sensor (SHO2S) | — | |
| W45 | OEM-B-8 | MAXXECUSPORT-C1-J1 | 0.5 | no route | Coolant temp sensor (ECT) | — | |
| W46 | OEM-B-17 | MAXXECUSPORT-C1-J2 | 0.5 | no route | Intake air temp sensor (IAT) | — | |
| W47 | OEM-B-13 | MAXXECUSPORT-C1-C1 | 0.5 | no route | Alternator FR signal (ALTF) | — | |
| W48 | OEM-E-14 | MAXXECUSPORT-C1-D2 | 0.5 | no route | Fuel tank pressure sensor (FTP) | — | |
| W49 | OEM-E-15 | MAXXECUSPORT-C1-D3 | 0.5 | no route | Electrical load detector (ELD) | — | |
| W50 | OEM-A-18 | MAXXECUSPORT-C1-K3 | 0.5 | no route | Vehicle speed sensor (VSS, M/T) | — | |
| W51 | OEM-B-10 | MAXXECUSPORT-C1-K4 | 0.5 | no route | Alternator L signal (ALTL) | — | |
| W52 | OEM-B-9 | MAXXECUSPORT-C1-E4 | 0.5 | no route | VTEC oil pressure switch (VTPSW) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 1318682-6 | TE | K-series ECU harness plug A (040-3 HD plug assy, 31P) | 1.000 | ea |
| connector | 353029-1 | TE | K-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P) | 1.000 | ea |
| connector | 353826-1 | TE | K-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P) | 1.000 | ea |
| terminal | 316836-1 | TE | Multilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²) | 47.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (16)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-A-26 | Required OEM function "Camshaft position B (CMP B)" (trigger_in) is not connected to the new ECU. |
| warn | DATASET_GAP | RSX ECU A | 5 of 31 cavities on RSX ECU A have no pin data (8,13,14,17,31). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU B | 8 of 24 cavities on RSX ECU B have no pin data (11,12,14,16,19,20,22,24). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU E | 8 of 31 cavities on RSX ECU E have no pin data (10,11,12,13,17,19,25,28). Anything there is invisible to these checks. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-A1 | MAXXECUSPORT-C1-A1 "GPO 4" drives OEM-E-18 A/C clutch relay (ACC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-B1 | MAXXECUSPORT-C1-B1 "GPO 5" drives OEM-E-8 A/F sensor heater relay control (AFSHTCR) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-B4 | MAXXECUSPORT-C1-B4 "GPO 1" drives OEM-E-7 Main relay control (MRLY) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-C4 | MAXXECUSPORT-C1-C4 "GPO 2" drives OEM-B-6 Radiator fan control (FANC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-D4 | MAXXECUSPORT-C1-D4 "GPO 3" drives OEM-E-1 Immobilizer fuel pump relay (IMO FPR) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-B-1 ↔ MAXXECUSPORT-C1-L1 | OEM-B-1 "VTC oil control solenoid (+)" [low_side_out] is wired to MAXXECUSPORT-C1-L1 "GPO 11/Motor 1-" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-B-18 ↔ MAXXECUSPORT-C1-L2 | OEM-B-18 "Alternator control (ALTC)" [low_side_out] is wired to MAXXECUSPORT-C1-L2 "GPO 12/MOTOR 1+" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-B-9 ↔ MAXXECUSPORT-C1-E4 | OEM-B-9 "VTEC oil pressure switch (VTPSW)" [digital_in] is wired to MAXXECUSPORT-C1-E4 "AIN 8 (0-5V)" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | SUPPLY_GROUP | MAXXECUSPORT-C1-G1 + OEM-A-20 + OEM-A-21 + OEM-E-5 + SP-5V1-1 | Supplies meant to stay independent share one net: OEM-A-20 [k_vcc2], OEM-A-21 [k_vcc1], OEM-E-5 [k_vcc3]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all. |
| info | NET_FAMILY | OEM-A-12 ↔ MAXXECUSPORT-C1-M3 | OEM-A-12 "Idle air control valve (IACV)" [low_side_out] is wired to MAXXECUSPORT-C1-M3 "INJ 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-15 ↔ MAXXECUSPORT-C1-L3 | OEM-B-15 "VTEC solenoid (VTS)" [low_side_out] is wired to MAXXECUSPORT-C1-L3 "INJ 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 17 optional OEM pins are not mapped: OEM-A-22 A/F sensor heater supply (AFSHTC+); OEM-A-9 Knock sensor (KS); OEM-B-21 Evap canister purge valve (PCS); OEM-B-23 VTC oil control solenoid (-); OEM-B-7 Reverse lockout solenoid (RVS, Type-S); OEM-E-16 Power steering pressure switch (PSPSW); OEM-E-20 Brake switch / interlock (2WBS); OEM-E-21 Evap vent shut valve (VSV); OEM-E-22 Brake switch (BKSW); OEM-E-23 K-line (diagnostic); OEM-E-24 Multiplex communication (SEFMJ); OEM-E-26 Engine speed pulse / tacho (NEP); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-30 Write enable signal (WEN); OEM-E-31 Malfunction indicator lamp (MIL); OEM-E-9 Ignition switch signal (IG1) |
Accepted (0)
| Code | Subject | Reason | By |
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Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Open items: - OEM-A 26: Camshaft position B (CMP B): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU SPORT Not wired: - OEM-A 9: Knock sensor (KS): no free knock input on MaxxECU MaxxECU SPORT - OEM-E 9: Ignition switch signal (IG1): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MaxxECU MaxxECU SPORT has no dedicated key-on input - OEM-B 21: Evap canister purge valve (PCS): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-B 23: VTC oil control solenoid (-): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-B 7: Reverse lockout solenoid (RVS, Type-S): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-E 21: Evap vent shut valve (VSV): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-E 31: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-E 26: Engine speed pulse / tacho (NEP): no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU SPORT - OEM-A 22: A/F sensor heater supply (AFSHTC+): no free heater_feed on MaxxECU MaxxECU SPORT - OEM-E 16: Power steering pressure switch (PSPSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-E 20: Brake switch / interlock (2WBS): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-E 22: Brake switch (BKSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-E 23: K-line (diagnostic): no free k_line on MaxxECU MaxxECU SPORT - OEM-E 24: Multiplex communication (SEFMJ): no free k_line on MaxxECU MaxxECU SPORT - OEM-E 27: Immobilizer code (IMOCD): not classified in the library; wire by hand - OEM-E 29: Service check signal (SCS): not classified in the library; wire by hand - OEM-E 30: Write enable signal (WEN): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Link: CIVICLink K20X (HC20X) DC5 installation manual | https://linkecu.com/documentation/237-4000%20DC5.pdf | archive | 2026-10-05 | 8a1a71301571 |
| 4 | vendor_doc | MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO) | http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html | archive | 2026-10-05 | 2e37b6814690 |
| 3 | forum | FFS TechNet: K-series 02-06 RSX ECU pin diagram (Helm) | https://ff-squad.com/technet2/k-series-02-06-rsx-ecu-pin-diagram/ | archive | 2026-10-05 | b2b85002666e |