RSX Type-S 2005-06 (K20Z1) → MaxxECU MaxxECU MINI REV10+ (auto)
RSX Type-S 2005-06 (K20Z1) — MaxxECU — MaxxECU MINI
⚠ 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 | 2: read the Findings page before cutting any wire |
| Size of the job | 40 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 | MAXXECUMINI-C1-H4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUMINI-C1-G4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-E-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | MAXXECUMINI-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MAXXECUMINI-C1-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | MAXXECUMINI-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MAXXECUMINI-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-E-6 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-5V1-1 | MAXXECUMINI-C1-E2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-7 | MAXXECUMINI-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-16 | MAXXECUMINI-C1-F1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-15 | MAXXECUMINI-C1-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-14 | MAXXECUMINI-C1-F3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-13 | MAXXECUMINI-C1-F4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B-5 | MAXXECUMINI-C1-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-4 | MAXXECUMINI-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-3 | MAXXECUMINI-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-2 | MAXXECUMINI-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-E-8 | MAXXECUMINI-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E-12 | MAXXECUMINI-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E-17 | MAXXECUMINI-C1-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E-18 | MAXXECUMINI-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-30 | MAXXECUMINI-C1-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-29 | MAXXECUMINI-C1-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E-20 | MAXXECUMINI-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B-8 | MAXXECUMINI-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B-17 | MAXXECUMINI-C1-C2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-18 | MAXXECUMINI-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B-10 | MAXXECUMINI-C1-B2 | 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 | MAXXECUMINI-C1-E2 | MAXXECUMINI-C1-A2 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | MAXXECUMINI-C1-H4 | MAXXECUMINI-C1-A2 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | MAXXECUMINI-C1-H4 | MAXXECUMINI-C1-G4 | open (OL) | +12 V supply must not touch power ground | |
| 4 | MAXXECUMINI-C1-G4 | MAXXECUMINI-C1-E2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | MAXXECUMINI-C1-H4 | MAXXECUMINI-C1-E2 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECUMINI-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | TRIGGER | — | W21 | — | 0.5 | OEM-A-7 | — | — | — |
| A2 | TRIGGER GND | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| B1 | DIN 1 (Hall only) | — | W39 | — | 0.5 | OEM-A-18 | — | — | — |
| B2 | DIN 2 (Hall only) | — | W40 | — | 0.5 | OEM-B-10 | — | — | — |
| B3 | SENSOR GND | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| B4 | SENSOR GND | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| C1 | CLT | — | W37 | — | 0.5 | OEM-B-8 | — | — | — |
| C2 | IAT | — | W38 | — | 0.5 | OEM-B-17 | — | — | — |
| C3 | AIN 3 (0-5V) | — | W34 | — | 0.5 | OEM-A-30 | — | — | — |
| C4 | AIN 4 (0-5V) | — | W36 | — | 0.5 | OEM-E-20 | — | — | — |
| D1 | GPO 8/TACHO | — | W33 | — | 0.5 | OEM-E-18 | — | — | — |
| D2 | TPS | — | W35 | — | 0.5 | OEM-A-29 | — | — | — |
| D3 | GND Shield | — | — | — | — | — | — | — | — |
| D4 | SENSOR GND | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| E1 | GPO 3 | — | W32 | — | 0.5 | OEM-E-17 | — | — | — |
| E2 | +5V sensor supply | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| E3 | CAN L | — | — | — | — | — | — | — | — |
| E4 | CAN H | — | — | — | — | — | — | — | — |
| F1 | IGN 1 | — | W22 | — | 0.5 | OEM-A-16 | — | — | — |
| F2 | IGN 2 | — | W23 | — | 0.5 | OEM-A-15 | — | — | — |
| F3 | IGN 3 | — | W24 | — | 0.5 | OEM-A-14 | — | — | — |
| F4 | IGN 4 | — | W25 | — | 0.5 | OEM-A-13 | — | — | — |
| G1 | GPO 2 | — | W31 | — | 0.5 | OEM-E-12 | — | — | — |
| G2 | GPO 1 | — | W30 | — | 0.5 | OEM-E-8 | — | — | — |
| G3 | INJ 1 | — | W26 | — | 0.5 | OEM-B-5 | — | — | — |
| G4 | ENGINE GND | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| H1 | INJ 2 | — | W27 | — | 0.5 | OEM-B-4 | — | — | — |
| H2 | INJ 3 | — | W28 | — | 0.5 | OEM-B-3 | — | — | — |
| H3 | INJ 4 | — | W29 | — | 0.5 | OEM-B-2 | — | — | — |
| H4 | +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 | Knock sensor (KS) | — | — | — | — | — | — | — | — |
| 2 | Ignition power 2 (IGP2) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 (IGP1) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 (PG2) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 (PG1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Camshaft position B (CMP B) | — | — | — | — | — | — | — | — |
| 7 | Crank position sensor (CKP) | — | W21 | — | 0.5 | MAXXECUMINI-C1-A1 | — | — | — |
| 8 | Logic ground 2 (LG2) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Logic ground 1 (LG1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | A/F sensor heater control (AFSHTC) | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Idle air control valve (IACV) | — | — | — | — | — | — | — | — |
| 13 | Ignition coil 4 (IGPLS4) | — | W25 | — | 0.5 | MAXXECUMINI-C1-F4 | — | — | — |
| 14 | Ignition coil 3 (IGPLS3) | — | W24 | — | 0.5 | MAXXECUMINI-C1-F3 | — | — | — |
| 15 | Ignition coil 2 (IGPLS2) | — | W23 | — | 0.5 | MAXXECUMINI-C1-F2 | — | — | — |
| 16 | Ignition coil 1 (IGPLS1) | — | W22 | — | 0.5 | MAXXECUMINI-C1-F1 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | Neutral position switch (NC) | — | W39 | — | 0.5 | MAXXECUMINI-C1-B1 | — | — | — |
| 19 | Camshaft position A (CMP A) | — | — | — | — | — | — | — | — |
| 20 | Sensor 5V supply 2 (VCC2) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor 5V supply 1 (VCC1) | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | Sensor ground 2 (SG2) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Sensor ground 1 (SG1) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — |
| 26 | — | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | A/F sensor - (AFS-, wideband Vs) | — | — | — | — | — | — | — | — |
| 29 | Throttle position sensor (TPS) | — | W35 | — | 0.5 | MAXXECUMINI-C1-D2 | — | — | — |
| 30 | Manifold absolute pressure (MAP) | — | W34 | — | 0.5 | MAXXECUMINI-C1-C3 | — | — | — |
| 31 | A/F sensor + (AFS+, wideband Ip) | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTC oil control solenoid (+) | — | — | — | — | — | — | — | — |
| 2 | Injector 4 (INJ4) | — | W29 | — | 0.5 | MAXXECUMINI-C1-H3 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W28 | — | 0.5 | MAXXECUMINI-C1-H2 | — | — | — |
| 4 | Injector 2 (INJ2) | — | W27 | — | 0.5 | MAXXECUMINI-C1-H1 | — | — | — |
| 5 | Injector 1 (INJ1) | — | W26 | — | 0.5 | MAXXECUMINI-C1-G3 | — | — | — |
| 6 | VTEC solenoid (VTS) | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor (ECT) | — | W37 | — | 0.5 | MAXXECUMINI-C1-C1 | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Alternator L signal (ALTL) | — | W40 | — | 0.5 | MAXXECUMINI-C1-B2 | — | — | — |
| 11 | VTEC oil pressure switch (VTPSW) | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal (ALTF) | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor (IAT) | — | W38 | — | 0.5 | MAXXECUMINI-C1-C2 | — | — | — |
| 18 | Alternator control (ALTC) | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve (PCS) | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
OEM-E
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | Reverse lockout solenoid (RVS, Type-S) | — | — | — | — | — | — | — | — |
| 4 | Logic ground 3 (LG3) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Sensor ground 3 (SG3) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor 5V supply 3 (VCC3) | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Main relay control (MRLY) | — | W30 | — | 0.5 | MAXXECUMINI-C1-G2 | — | — | — |
| 9 | A/F sensor heater relay control (AFSHTCR) | — | — | — | — | — | — | — | — |
| 10 | Ignition switch signal (IG1) | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Radiator fan control (FANC) | — | W31 | — | 0.5 | MAXXECUMINI-C1-G1 | — | — | — |
| 13 | Multiplex communication (SEFMJ) | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor (FTP) | — | — | — | — | — | — | — | — |
| 15 | Electrical load detector (ELD) | — | — | — | — | — | — | — | — |
| 16 | Power steering pressure switch (PSPSW) | — | — | — | — | — | — | — | — |
| 17 | Immobilizer fuel pump relay (IMO FPR) | — | W32 | — | 0.5 | MAXXECUMINI-C1-E1 | — | — | — |
| 18 | A/C clutch relay (ACC) | — | W33 | — | 0.5 | MAXXECUMINI-C1-D1 | — | — | — |
| 19 | Evap vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 20 | Secondary heated O2 sensor (SHO2S) | — | W36 | — | 0.5 | MAXXECUMINI-C1-C4 | — | — | — |
| 21 | Secondary O2 heater control (SO2SHTC) | — | — | — | — | — | — | — | — |
| 22 | Brake switch (BKSW) | — | — | — | — | — | — | — | — |
| 23 | K-line (diagnostic) | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
| 25 | Engine speed pulse / tacho (NEP) | — | — | — | — | — | — | — | — |
| 26 | Vehicle speed output (VSSOUT) | — | — | — | — | — | — | — | — |
| 27 | Immobilizer code (IMOCD) | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | Service check signal (SCS) | — | — | — | — | — | — | — | — |
| 30 | Write enable signal (WEN) | — | — | — | — | — | — | — | — |
| 31 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | MAXXECUMINI-C1-B4 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-A-23 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-A-24 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | MAXXECUMINI-C1-A2 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MAXXECUMINI-C1-B3 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MAXXECUMINI-C1-D4 | — | — | — |
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 | MAXXECUMINI-C1-H4 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W17 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-E-6 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MAXXECUMINI-C1-E2 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-8 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-9 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E-4 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUMINI-C1-G4 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Knock sensor (KS) | knock_in | — | — | — | single_source | |
| OEM-A-10 | A/F sensor heater control (AFSHTC) | low_side_out | — | — | — | single_source | |
| OEM-A-12 | Idle air control valve (IACV) | low_side_out | — | — | — | single_source | |
| OEM-A-13 | Ignition coil 4 (IGPLS4) | ignition_out | MAXXECUMINI-C1-F4 | IGN 4 | ignition_out | single_source | |
| OEM-A-14 | Ignition coil 3 (IGPLS3) | ignition_out | MAXXECUMINI-C1-F3 | IGN 3 | ignition_out | single_source | |
| OEM-A-15 | Ignition coil 2 (IGPLS2) | ignition_out | MAXXECUMINI-C1-F2 | IGN 2 | ignition_out | single_source | |
| OEM-A-16 | Ignition coil 1 (IGPLS1) | ignition_out | MAXXECUMINI-C1-F1 | IGN 1 | ignition_out | single_source | |
| OEM-A-18 | Neutral position switch (NC) | digital_in | MAXXECUMINI-C1-B1 | DIN 1 (Hall only) | digital_in | single_source | |
| OEM-A-19 | Camshaft position A (CMP A) | trigger_in | — | — | — | single_source | |
| OEM-A-2 | Ignition power 2 (IGP2) | power_in | MAXXECUMINI-C1-H4 | +12V (ECU power supply) | power_in | single_source | |
| OEM-A-20 | Sensor 5V supply 2 (VCC2) | vref | MAXXECUMINI-C1-E2 | +5V sensor supply | vref | single_source | |
| OEM-A-21 | Sensor 5V supply 1 (VCC1) | vref | MAXXECUMINI-C1-E2 | +5V sensor supply | vref | single_source | |
| OEM-A-23 | Sensor ground 2 (SG2) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-24 | Sensor ground 1 (SG1) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-28 | A/F sensor - (AFS-, wideband Vs) | wb_vs | — | — | — | single_source | |
| OEM-A-29 | Throttle position sensor (TPS) | analog_in | MAXXECUMINI-C1-D2 | TPS | analog_in | single_source | |
| OEM-A-3 | Ignition power 1 (IGP1) | power_in | MAXXECUMINI-C1-H4 | +12V (ECU power supply) | power_in | single_source | |
| OEM-A-30 | Manifold absolute pressure (MAP) | analog_in | MAXXECUMINI-C1-C3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-A-31 | A/F sensor + (AFS+, wideband Ip) | wb_ip | — | — | — | single_source | |
| OEM-A-4 | Power ground 2 (PG2) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-A-5 | Power ground 1 (PG1) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-A-6 | Camshaft position B (CMP B) | trigger_in | — | — | — | single_source | |
| OEM-A-7 | Crank position sensor (CKP) | trigger_in | MAXXECUMINI-C1-A1 | TRIGGER | trigger_in | single_source | |
| OEM-A-8 | Logic ground 2 (LG2) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-A-9 | Logic ground 1 (LG1) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-B-1 | VTC oil control solenoid (+) | low_side_out | — | — | — | single_source | |
| OEM-B-10 | Alternator L signal (ALTL) | digital_in | MAXXECUMINI-C1-B2 | DIN 2 (Hall only) | digital_in | single_source | |
| OEM-B-11 | VTEC oil pressure switch (VTPSW) | digital_in | — | — | — | single_source | |
| OEM-B-13 | Alternator FR signal (ALTF) | analog_in | — | — | — | single_source | |
| OEM-B-17 | Intake air temp sensor (IAT) | temp_in | MAXXECUMINI-C1-C2 | IAT | temp_in | single_source | |
| OEM-B-18 | Alternator control (ALTC) | low_side_out | — | — | — | single_source | |
| OEM-B-2 | Injector 4 (INJ4) | injector_out | MAXXECUMINI-C1-H3 | INJ 4 | injector_out | single_source | |
| OEM-B-21 | Evap canister purge valve (PCS) | low_side_out | — | — | — | single_source | |
| OEM-B-3 | Injector 3 (INJ3) | injector_out | MAXXECUMINI-C1-H2 | INJ 3 | injector_out | single_source | |
| OEM-B-4 | Injector 2 (INJ2) | injector_out | MAXXECUMINI-C1-H1 | INJ 2 | injector_out | single_source | |
| OEM-B-5 | Injector 1 (INJ1) | injector_out | MAXXECUMINI-C1-G3 | INJ 1 | injector_out | single_source | |
| OEM-B-6 | VTEC solenoid (VTS) | low_side_out | — | — | — | single_source | |
| OEM-B-8 | Coolant temp sensor (ECT) | temp_in | MAXXECUMINI-C1-C1 | CLT | temp_in | single_source | |
| OEM-E-10 | Ignition switch signal (IG1) | digital_in | — | — | — | single_source | |
| OEM-E-12 | Radiator fan control (FANC) | low_side_out | MAXXECUMINI-C1-G1 | GPO 2 | low_side_out | single_source | |
| OEM-E-13 | Multiplex communication (SEFMJ) | serial | — | — | — | single_source | |
| OEM-E-14 | Fuel tank pressure sensor (FTP) | analog_in | — | — | — | single_source | |
| OEM-E-15 | Electrical load detector (ELD) | analog_in | — | — | — | single_source | |
| OEM-E-16 | Power steering pressure switch (PSPSW) | digital_in | — | — | — | single_source | |
| OEM-E-17 | Immobilizer fuel pump relay (IMO FPR) | low_side_out | MAXXECUMINI-C1-E1 | GPO 3 | low_side_out | single_source | |
| OEM-E-18 | A/C clutch relay (ACC) | low_side_out | MAXXECUMINI-C1-D1 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-E-19 | Evap vent shut valve (VSV) | low_side_out | — | — | — | single_source | |
| OEM-E-20 | Secondary heated O2 sensor (SHO2S) | lambda_nb_in | MAXXECUMINI-C1-C4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-E-21 | Secondary O2 heater control (SO2SHTC) | low_side_out | — | — | — | single_source | |
| OEM-E-22 | Brake switch (BKSW) | digital_in | — | — | — | single_source | |
| OEM-E-23 | K-line (diagnostic) | serial | — | — | — | single_source | |
| OEM-E-25 | Engine speed pulse / tacho (NEP) | tacho_out | — | — | — | single_source | |
| OEM-E-26 | Vehicle speed output (VSSOUT) | tacho_out | — | — | — | single_source | |
| OEM-E-27 | Immobilizer code (IMOCD) | — | — | — | — | single_source | |
| OEM-E-29 | Service check signal (SCS) | — | — | — | — | single_source | |
| OEM-E-3 | Reverse lockout solenoid (RVS, Type-S) | low_side_out | — | — | — | single_source | |
| OEM-E-30 | Write enable signal (WEN) | — | — | — | — | single_source | |
| OEM-E-31 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-E-4 | Logic ground 3 (LG3) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-E-5 | Sensor ground 3 (SG3) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-E-6 | Sensor 5V supply 3 (VCC3) | vref | MAXXECUMINI-C1-E2 | +5V sensor supply | vref | single_source | |
| OEM-E-8 | Main relay control (MRLY) | low_side_out | MAXXECUMINI-C1-G2 | GPO 1 | low_side_out | single_source | |
| OEM-E-9 | A/F sensor heater relay control (AFSHTCR) | low_side_out | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | no route | Ignition power 2 (IGP2) | — | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | no route | Ignition power 1 (IGP1) | — | |
| W3 | SP-14V-1 | MAXXECUMINI-C1-H4 | 0.85 | no route | +12V (ECU power supply) | — | |
| W4 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 (PG2) | — | |
| W5 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 (PG1) | — | |
| W6 | OEM-A-8 | SP-GND-1 | 0.85 | no route | Logic ground 2 (LG2) | — | |
| W7 | OEM-A-9 | SP-GND-1 | 0.85 | no route | Logic ground 1 (LG1) | — | |
| W8 | OEM-E-4 | SP-GND-1 | 0.85 | no route | Logic ground 3 (LG3) | — | |
| W9 | SP-GND-1 | MAXXECUMINI-C1-G4 | 0.85 | no route | ENGINE GND | — | |
| W10 | OEM-A-23 | SP-0V-1 | 0.5 | no route | Sensor ground 2 (SG2) | — | |
| W11 | OEM-A-24 | SP-0V-1 | 0.5 | no route | Sensor ground 1 (SG1) | — | |
| W12 | OEM-E-5 | SP-0V-1 | 0.5 | no route | Sensor ground 3 (SG3) | — | |
| W13 | SP-0V-1 | MAXXECUMINI-C1-A2 | 0.5 | no route | TRIGGER GND | — | |
| W14 | SP-0V-1 | MAXXECUMINI-C1-B3 | 0.5 | no route | SENSOR GND | — | |
| W15 | SP-0V-1 | MAXXECUMINI-C1-B4 | 0.5 | no route | SENSOR GND | — | |
| W16 | SP-0V-1 | MAXXECUMINI-C1-D4 | 0.5 | no route | SENSOR GND | — | |
| W17 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 (VCC2) | — | |
| W18 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (VCC1) | — | |
| W19 | OEM-E-6 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 3 (VCC3) | — | |
| W20 | SP-5V1-1 | MAXXECUMINI-C1-E2 | 0.5 | no route | +5V sensor supply | — | |
| W21 | OEM-A-7 | MAXXECUMINI-C1-A1 | 0.5 | no route | Crank position sensor (CKP) | — | |
| W22 | OEM-A-16 | MAXXECUMINI-C1-F1 | 0.5 | no route | Ignition coil 1 (IGPLS1) | — | |
| W23 | OEM-A-15 | MAXXECUMINI-C1-F2 | 0.5 | no route | Ignition coil 2 (IGPLS2) | — | |
| W24 | OEM-A-14 | MAXXECUMINI-C1-F3 | 0.5 | no route | Ignition coil 3 (IGPLS3) | — | |
| W25 | OEM-A-13 | MAXXECUMINI-C1-F4 | 0.5 | no route | Ignition coil 4 (IGPLS4) | — | |
| W26 | OEM-B-5 | MAXXECUMINI-C1-G3 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W27 | OEM-B-4 | MAXXECUMINI-C1-H1 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W28 | OEM-B-3 | MAXXECUMINI-C1-H2 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W29 | OEM-B-2 | MAXXECUMINI-C1-H3 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W30 | OEM-E-8 | MAXXECUMINI-C1-G2 | 0.5 | no route | Main relay control (MRLY) | — | |
| W31 | OEM-E-12 | MAXXECUMINI-C1-G1 | 0.5 | no route | Radiator fan control (FANC) | — | |
| W32 | OEM-E-17 | MAXXECUMINI-C1-E1 | 0.5 | no route | Immobilizer fuel pump relay (IMO FPR) | — | |
| W33 | OEM-E-18 | MAXXECUMINI-C1-D1 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W34 | OEM-A-30 | MAXXECUMINI-C1-C3 | 0.5 | no route | Manifold absolute pressure (MAP) | — | |
| W35 | OEM-A-29 | MAXXECUMINI-C1-D2 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W36 | OEM-E-20 | MAXXECUMINI-C1-C4 | 0.5 | no route | Secondary heated O2 sensor (SHO2S) | — | |
| W37 | OEM-B-8 | MAXXECUMINI-C1-C1 | 0.5 | no route | Coolant temp sensor (ECT) | — | |
| W38 | OEM-B-17 | MAXXECUMINI-C1-C2 | 0.5 | no route | Intake air temp sensor (IAT) | — | |
| W39 | OEM-A-18 | MAXXECUMINI-C1-B1 | 0.5 | no route | Neutral position switch (NC) | — | |
| W40 | OEM-B-10 | MAXXECUMINI-C1-B2 | 0.5 | no route | Alternator L signal (ALTL) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 1318682-6 | TE | K-series ECU harness plug A (040-3 HD plug assy, 31P) | 1.000 | ea |
| connector | 353029-1 | TE | K-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P) | 1.000 | ea |
| connector | 353826-1 | TE | K-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P) | 1.000 | ea |
| terminal | 316836-1 | TE | Multilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²) | 33.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (11)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-A-19 | Required OEM function "Camshaft position A (CMP A)" (trigger_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A-6 | Required OEM function "Camshaft position B (CMP B)" (trigger_in) is not connected to the new ECU. |
| warn | DATASET_GAP | RSX ECU A | 6 of 31 cavities on RSX ECU A have no pin data (11,17,22,25,26,27). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU B | 11 of 24 cavities on RSX ECU B have no pin data (7,9,12,14,15,16,19,20,22,23,24). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU E | 6 of 31 cavities on RSX ECU E have no pin data (1,2,7,11,24,28). Anything there is invisible to these checks. |
| warn | LOAD_UNKNOWN | MAXXECUMINI-C1-D1 | MAXXECUMINI-C1-D1 "GPO 8/TACHO" 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 | MAXXECUMINI-C1-E1 | MAXXECUMINI-C1-E1 "GPO 3" drives OEM-E-17 Immobilizer fuel pump relay (IMO FPR) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUMINI-C1-G1 | MAXXECUMINI-C1-G1 "GPO 2" drives OEM-E-12 Radiator fan control (FANC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUMINI-C1-G2 | MAXXECUMINI-C1-G2 "GPO 1" drives OEM-E-8 Main relay control (MRLY) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | SUPPLY_GROUP | MAXXECUMINI-C1-E2 + OEM-A-20 + OEM-A-21 + OEM-E-6 + SP-5V1-1 | Supplies meant to stay independent share one net: OEM-A-20 [k_vcc2], OEM-A-21 [k_vcc1], OEM-E-6 [k_vcc3]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all. |
| info | UNMAPPED | OEM | 28 optional OEM pins are not mapped: OEM-A-1 Knock sensor (KS); OEM-A-10 A/F sensor heater control (AFSHTC); OEM-A-12 Idle air control valve (IACV); OEM-A-28 A/F sensor - (AFS-, wideband Vs); OEM-A-31 A/F sensor + (AFS+, wideband Ip); OEM-B-1 VTC oil control solenoid (+); OEM-B-11 VTEC oil pressure switch (VTPSW); OEM-B-13 Alternator FR signal (ALTF); OEM-B-18 Alternator control (ALTC); OEM-B-21 Evap canister purge valve (PCS); OEM-B-6 VTEC solenoid (VTS); OEM-E-10 Ignition switch signal (IG1); OEM-E-13 Multiplex communication (SEFMJ); OEM-E-14 Fuel tank pressure sensor (FTP); OEM-E-15 Electrical load detector (ELD); OEM-E-16 Power steering pressure switch (PSPSW); OEM-E-19 Evap vent shut valve (VSV); OEM-E-21 Secondary O2 heater control (SO2SHTC); OEM-E-22 Brake switch (BKSW); OEM-E-23 K-line (diagnostic); OEM-E-25 Engine speed pulse / tacho (NEP); OEM-E-26 Vehicle speed output (VSSOUT); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-3 Reverse lockout solenoid (RVS, Type-S); OEM-E-30 Write enable signal (WEN); OEM-E-31 Malfunction indicator lamp (MIL); OEM-E-9 A/F sensor heater relay control (AFSHTCR) |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Open items: - OEM-A 19: Camshaft position A (CMP A): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU MINI - OEM-A 6: Camshaft position B (CMP B): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU MINI Not wired: - OEM-A 1: Knock sensor (KS): no free knock input on MaxxECU MaxxECU MINI - OEM-E 10: Ignition switch signal (IG1): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MaxxECU MaxxECU MINI has no dedicated key-on input - OEM-E 9: A/F sensor heater relay control (AFSHTCR): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on MaxxECU MaxxECU MINI - OEM-E 21: Secondary O2 heater control (SO2SHTC): no free heater_low_side/low_side/ls_hs/hbridge on MaxxECU MaxxECU MINI - OEM-A 10: A/F sensor heater control (AFSHTC): no free heater_low_side/low_side/ls_hs/hbridge on MaxxECU MaxxECU MINI - OEM-A 12: Idle air control valve (IACV): no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on MaxxECU MaxxECU MINI - OEM-B 6: VTEC solenoid (VTS): no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on MaxxECU MaxxECU MINI - OEM-B 1: VTC oil control solenoid (+): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU MINI - OEM-B 18: Alternator control (ALTC): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU MINI - OEM-B 21: Evap canister purge valve (PCS): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU MINI - OEM-E 19: Evap vent shut valve (VSV): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU MINI - OEM-E 3: Reverse lockout solenoid (RVS, Type-S): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU MINI - OEM-E 31: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU MINI - OEM-E 25: Engine speed pulse / tacho (NEP): no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU MINI - OEM-E 26: Vehicle speed output (VSSOUT): no free frequency_out/tacho/low_side/ls_hs on MaxxECU MaxxECU MINI - OEM-A 31: A/F sensor + (AFS+, wideband Ip): no free wb_ip on MaxxECU MaxxECU MINI - OEM-A 28: A/F sensor - (AFS-, wideband Vs): no free wb_vs on MaxxECU MaxxECU MINI - OEM-B 13: Alternator FR signal (ALTF): no free analog_0_5 on MaxxECU MaxxECU MINI - OEM-E 14: Fuel tank pressure sensor (FTP): no free analog_0_5 on MaxxECU MaxxECU MINI - OEM-E 15: Electrical load detector (ELD): no free analog_0_5 on MaxxECU MaxxECU MINI - OEM-B 11: VTEC oil pressure switch (VTPSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-E 16: Power steering pressure switch (PSPSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-E 22: Brake switch (BKSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-E 13: Multiplex communication (SEFMJ): no free k_line on MaxxECU MaxxECU MINI - OEM-E 23: K-line (diagnostic): no free k_line on MaxxECU MaxxECU MINI - 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 | 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 |