RSX Type-S 2002-04 (K20A2) → Emtron SL4 (auto)
RSX Type-S 2002-04 (K20A2) — Emtron — SL4
⚠ 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 | 58 wires · 9 connectors · 7 part lines |
| Tools | 715131-1 · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 · 316836-1 |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | SL4-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | SL4-B-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-23 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-24 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-E-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | SL4-B-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | SL4-B-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-10 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-E-4 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | SL4-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-E-5 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-5V1-1 | SL4-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-7 | SL4-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | SL4-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-25 | SL4-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | SL4-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-9 | SL4-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-30 | SL4-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-29 | SL4-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-28 | SL4-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-27 | SL4-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-5 | SL4-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-4 | SL4-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-3 | SL4-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B-2 | SL4-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E-9 | SL4-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E-7 | SL4-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-6 | SL4-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E-1 | SL4-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E-18 | SL4-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E-8 | SL4-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-E-6 | SL4-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-1 | SL4-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-12 | SL4-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-B-15 | SL4-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-B-1 | SL4-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-B-18 | SL4-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-19 | SL4-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-15 | SL4-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-E-2 | SL4-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-B-8 | SL4-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-B-17 | SL4-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-B-13 | SL4-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-E-14 | SL4-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-E-15 | SL4-B-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-18 | SL4-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-B-10 | SL4-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-B-9 | SL4-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-E-16 | SL4-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-E-20 | SL4-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-E-22 | SL4-A-25 | 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 | SL4-A-34 | SL4-B-10 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | SL4-A-34 | SL4-B-18 | open (OL) | +12 V supply must not touch power ground | |
| 3 | SL4-A-34 | SL4-B-2 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 4 | SL4-B-10 | SL4-B-2 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 5 | SL4-B-18 | SL4-B-2 | open (OL) | power ground must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/F sensor heater control (AFSHTC) | — | W40 | — | 0.5 | SL4-A-11 | — | — | — |
| 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) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 (PG1) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | A/F sensor + (AFS+, wideband Ip) | — | — | — | — | — | — | — | — |
| 7 | Crank position sensor (CKP) | — | W20 | — | 0.5 | SL4-B-5 | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | Knock sensor (KS) | — | W24 | — | 0.5 | SL4-B-16 | — | — | — |
| 10 | Sensor ground 2 (SG2) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | Sensor ground 1 (SG1) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Idle air control valve (IACV) | — | W41 | — | 0.5 | SL4-A-12 | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | Throttle position sensor (TPS) | — | W46 | — | 0.5 | SL4-B-12 | — | — | — |
| 16 | A/F sensor - (AFS-, wideband Vs) | — | — | — | — | — | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | Vehicle speed sensor (VSS, M/T) | — | W53 | — | 0.5 | SL4-A-20 | — | — | — |
| 19 | Manifold absolute pressure (MAP) | — | W45 | — | 0.5 | SL4-B-11 | — | — | — |
| 20 | Sensor 5V supply 2 (VCC2) | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor 5V supply 1 (VCC1) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | A/F sensor heater supply (AFSHTC+) | — | — | — | — | — | — | — | — |
| 23 | Logic ground 2 (LG2) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | Logic ground 1 (LG1) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Camshaft position A (CMP A) | — | W22 | — | 0.5 | SL4-B-7 | — | — | — |
| 26 | Camshaft position B (CMP B) | — | — | — | — | — | — | — | — |
| 27 | Ignition coil 4 (IGPLS4) | — | W28 | — | 0.5 | SL4-A-29 | — | — | — |
| 28 | Ignition coil 3 (IGPLS3) | — | W27 | — | 0.5 | SL4-A-28 | — | — | — |
| 29 | Ignition coil 2 (IGPLS2) | — | W26 | — | 0.5 | SL4-A-27 | — | — | — |
| 30 | Ignition coil 1 (IGPLS1) | — | W25 | — | 0.5 | SL4-A-26 | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTC oil control solenoid (+) | — | W43 | — | 0.5 | SL4-A-18 | — | — | — |
| 2 | Injector 4 (INJ4) | — | W32 | — | 0.5 | SL4-A-4 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W31 | — | 0.5 | SL4-A-3 | — | — | — |
| 4 | Injector 2 (INJ2) | — | W30 | — | 0.5 | SL4-A-2 | — | — | — |
| 5 | Injector 1 (INJ1) | — | W29 | — | 0.5 | SL4-A-1 | — | — | — |
| 6 | Radiator fan control (FANC) | — | W35 | — | 0.5 | SL4-A-14 | — | — | — |
| 7 | Reverse lockout solenoid (RVS, Type-S) | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor (ECT) | — | W48 | — | 0.5 | SL4-B-14 | — | — | — |
| 9 | VTEC oil pressure switch (VTPSW) | — | W55 | — | 0.5 | SL4-A-22 | — | — | — |
| 10 | Alternator L signal (ALTL) | — | W54 | — | 0.5 | SL4-A-21 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal (ALTF) | — | W50 | — | 0.5 | SL4-B-19 | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | VTEC solenoid (VTS) | — | W42 | — | 0.5 | SL4-A-13 | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor (IAT) | — | W49 | — | 0.5 | SL4-B-15 | — | — | — |
| 18 | Alternator control (ALTC) | — | W44 | — | 0.5 | SL4-A-19 | — | — | — |
| 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) | — | W36 | — | 0.5 | SL4-A-15 | — | — | — |
| 2 | Secondary heated O2 sensor (SHO2S) | — | W47 | — | 0.5 | SL4-B-13 | — | — | — |
| 3 | Logic ground 3 (LG3) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Sensor ground 3 (SG3) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor 5V supply 3 (VCC3) | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 6 | Secondary O2 heater control (SO2SHTC) | — | W39 | — | 0.5 | SL4-A-10 | — | — | — |
| 7 | Main relay control (MRLY) | — | W34 | — | 0.5 | SL4-B-3 | — | — | — |
| 8 | A/F sensor heater relay control (AFSHTCR) | — | W38 | — | 0.5 | SL4-A-17 | — | — | — |
| 9 | Ignition switch signal (IG1) | — | W33 | — | 0.5 | SL4-B-4 | — | — | — |
| 10 | — | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor (FTP) | — | W51 | — | 0.5 | SL4-B-20 | — | — | — |
| 15 | Electrical load detector (ELD) | — | W52 | — | 0.5 | SL4-B-21 | — | — | — |
| 16 | Power steering pressure switch (PSPSW) | — | W56 | — | 0.5 | SL4-A-23 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | A/C clutch relay (ACC) | — | W37 | — | 0.5 | SL4-A-16 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | Brake switch / interlock (2WBS) | — | W57 | — | 0.5 | SL4-A-24 | — | — | — |
| 21 | Evap vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 22 | Brake switch (BKSW) | — | W58 | — | 0.5 | SL4-A-25 | — | — | — |
| 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) | — | — | — | — | — | — | — | — |
SL4-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection channel 1 | — | W29 | — | 0.5 | OEM-B-5 | — | — | — |
| 2 | Injection channel 2 | — | W30 | — | 0.5 | OEM-B-4 | — | — | — |
| 3 | Injection channel 3 | — | W31 | — | 0.5 | OEM-B-3 | — | — | — |
| 4 | Injection channel 4 | — | W32 | — | 0.5 | OEM-B-2 | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Sensor supply 8V | — | — | — | — | — | — | — | — |
| 10 | Auxiliary output 1 | — | W39 | — | 0.5 | OEM-E-6 | — | — | — |
| 11 | Auxiliary output 2 | — | W40 | — | 0.5 | OEM-A-1 | — | — | — |
| 12 | Auxiliary output 3 | — | W41 | — | 0.5 | OEM-A-12 | — | — | — |
| 13 | Auxiliary output 4 | — | W42 | — | 0.5 | OEM-B-15 | — | — | — |
| 14 | Auxiliary output 5 | — | W35 | — | 0.5 | OEM-B-6 | — | — | — |
| 15 | Auxiliary output 6 | — | W36 | — | 0.5 | OEM-E-1 | — | — | — |
| 16 | Auxiliary output 7 | — | W37 | — | 0.5 | OEM-E-18 | — | — | — |
| 17 | Auxiliary output 8 | — | W38 | — | 0.5 | OEM-E-8 | — | — | — |
| 18 | Auxiliary output 9 | — | W43 | — | 0.5 | OEM-B-1 | — | — | — |
| 19 | Auxiliary output 10 | — | W44 | — | 0.5 | OEM-B-18 | — | — | — |
| 20 | Digital input 1 | — | W53 | — | 0.5 | OEM-A-18 | — | — | — |
| 21 | Digital input 2 | — | W54 | — | 0.5 | OEM-B-10 | — | — | — |
| 22 | Digital input 3 | — | W55 | — | 0.5 | OEM-B-9 | — | — | — |
| 23 | Digital input 4 | — | W56 | — | 0.5 | OEM-E-16 | — | — | — |
| 24 | Digital input 5 | — | W57 | — | 0.5 | OEM-E-20 | — | — | — |
| 25 | Digital input 6 | — | W58 | — | 0.5 | OEM-E-22 | — | — | — |
| 26 | Ignition channel 1 | — | W25 | — | 0.5 | OEM-A-30 | — | — | — |
| 27 | Ignition channel 2 | — | W26 | — | 0.5 | OEM-A-29 | — | — | — |
| 28 | Ignition channel 3 | — | W27 | — | 0.5 | OEM-A-28 | — | — | — |
| 29 | Ignition channel 4 | — | W28 | — | 0.5 | OEM-A-27 | — | — | — |
| 30 | NC | — | — | — | — | — | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | NC | — | — | — | — | — | — | — | — |
| 33 | NC | — | — | — | — | — | — | — | — |
| 34 | Aux 9–10 14V supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
SL4-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU 14V supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Sensor supply Vref1 5.0V | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 3 | EFI relay output (low side, 200 mA) | — | W34 | — | 0.5 | OEM-E-7 | — | — | — |
| 4 | Ignition switch input | — | W33 | — | 0.5 | OEM-E-9 | — | — | — |
| 5 | Crank index sensor + | — | W20 | — | 0.5 | OEM-A-7 | — | — | — |
| 6 | Crank index sensor − | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Sync sensor + | — | W22 | — | 0.5 | OEM-A-25 | — | — | — |
| 8 | Sync sensor − | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 9 | Shield (crank/sync/knock) | — | — | — | — | — | — | — | — |
| 10 | Analog sensor 0V reference | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | Analog input 1 | — | W45 | — | 0.5 | OEM-A-19 | — | — | — |
| 12 | Analog input 2 | — | W46 | — | 0.5 | OEM-A-15 | — | — | — |
| 13 | Analog input 3 | — | W47 | — | 0.5 | OEM-E-2 | — | — | — |
| 14 | Analog input 4 | — | W48 | — | 0.5 | OEM-B-8 | — | — | — |
| 15 | Analog input 5 | — | W49 | — | 0.5 | OEM-B-17 | — | — | — |
| 16 | Knock 1 + | — | W24 | — | 0.5 | OEM-A-9 | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | ECU ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Analog input 6 | — | W50 | — | 0.5 | OEM-B-13 | — | — | — |
| 20 | Analog input 7 (switchable 1k pull-up) | — | W51 | — | 0.5 | OEM-E-14 | — | — | — |
| 21 | Analog input 8 (switchable 1k pull-up) | — | W52 | — | 0.5 | OEM-E-15 | — | — | — |
| 22 | Analog input 9 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 23 | Analog input 10 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 24 | Knock 2 + | — | — | — | — | — | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | ECU ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 27 | CAN 1 H | — | — | — | — | — | — | — | — |
| 28 | CAN 1 L | — | — | — | — | — | — | — | — |
| 29 | NC | — | — | — | — | — | — | — | — |
| 30 | NC | — | — | — | — | — | — | — | — |
| 31 | Ethernet Tx + | — | — | — | — | — | — | — | — |
| 32 | Ethernet Tx − | — | — | — | — | — | — | — | — |
| 33 | Ethernet Rx + | — | — | — | — | — | — | — | — |
| 34 | Ethernet Rx − | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W23 | — | 0.5 | SL4-B-8 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-A-10 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-A-11 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-E-4 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | SL4-B-10 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | SL4-B-6 | — | — | — |
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 | SL4-A-34 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | SL4-B-1 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W16 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | SL4-B-2 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-24 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-E-3 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | SL4-B-18 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | SL4-B-26 | — | — | — |
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 | SL4-A-11 | Auxiliary output 2 | switch_out | single_source | |
| OEM-A-10 | Sensor ground 2 (SG2) | sensor_ground | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | corroborated | |
| OEM-A-11 | Sensor ground 1 (SG1) | sensor_ground | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | corroborated | |
| OEM-A-12 | Idle air control valve (IACV) | low_side_out | SL4-A-12 | Auxiliary output 3 | switch_out | corroborated | |
| OEM-A-15 | Throttle position sensor (TPS) | analog_in | SL4-B-12 | Analog input 2 | analog_in | corroborated | |
| OEM-A-16 | A/F sensor - (AFS-, wideband Vs) | wb_vs | — | — | — | single_source | |
| OEM-A-18 | Vehicle speed sensor (VSS, M/T) | digital_in | SL4-A-20 | Digital input 1 | digital_in | corroborated | |
| OEM-A-19 | Manifold absolute pressure (MAP) | analog_in | SL4-B-11 | Analog input 1 | analog_in | corroborated | |
| OEM-A-2 | Ignition power 2 (IGP2) | power_in | SL4-A-34 + SL4-B-1 | Aux 9–10 14V supply + ECU 14V supply | power_in | corroborated | |
| OEM-A-20 | Sensor 5V supply 2 (VCC2) | vref | SL4-B-2 | Sensor supply Vref1 5.0V | vref | corroborated | |
| OEM-A-21 | Sensor 5V supply 1 (VCC1) | vref | SL4-B-2 | Sensor supply Vref1 5.0V | vref | corroborated | |
| OEM-A-22 | A/F sensor heater supply (AFSHTC+) | power_out | — | — | — | single_source | |
| OEM-A-23 | Logic ground 2 (LG2) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | corroborated | |
| OEM-A-24 | Logic ground 1 (LG1) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | corroborated | |
| OEM-A-25 | Camshaft position A (CMP A) | trigger_in | SL4-B-7 | Sync sensor + | 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 | SL4-A-29 | Ignition channel 4 | ignition_out | corroborated | |
| OEM-A-28 | Ignition coil 3 (IGPLS3) | ignition_out | SL4-A-28 | Ignition channel 3 | ignition_out | corroborated | |
| OEM-A-29 | Ignition coil 2 (IGPLS2) | ignition_out | SL4-A-27 | Ignition channel 2 | ignition_out | corroborated | |
| OEM-A-3 | Ignition power 1 (IGP1) | power_in | SL4-A-34 + SL4-B-1 | Aux 9–10 14V supply + ECU 14V supply | power_in | corroborated | |
| OEM-A-30 | Ignition coil 1 (IGPLS1) | ignition_out | SL4-A-26 | Ignition channel 1 | ignition_out | corroborated | |
| OEM-A-4 | Power ground 2 (PG2) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | corroborated | |
| OEM-A-5 | Power ground 1 (PG1) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | corroborated | |
| OEM-A-6 | A/F sensor + (AFS+, wideband Ip) | wb_ip | — | — | — | single_source | |
| OEM-A-7 | Crank position sensor (CKP) | trigger_in | SL4-B-5 | Crank index sensor + | trigger_in | corroborated | |
| OEM-A-9 | Knock sensor (KS) | knock_in | SL4-B-16 | Knock 1 + | knock_in | corroborated | |
| OEM-B-1 | VTC oil control solenoid (+) | low_side_out | SL4-A-18 | Auxiliary output 9 | hbridge_out | corroborated | |
| OEM-B-10 | Alternator L signal (ALTL) | digital_in | SL4-A-21 | Digital input 2 | digital_in | single_source | |
| OEM-B-13 | Alternator FR signal (ALTF) | analog_in | SL4-B-19 | Analog input 6 | analog_in | single_source | |
| OEM-B-15 | VTEC solenoid (VTS) | low_side_out | SL4-A-13 | Auxiliary output 4 | switch_out | single_source | |
| OEM-B-17 | Intake air temp sensor (IAT) | temp_in | SL4-B-15 | Analog input 5 | analog_in | corroborated | |
| OEM-B-18 | Alternator control (ALTC) | low_side_out | SL4-A-19 | Auxiliary output 10 | hbridge_out | corroborated | |
| OEM-B-2 | Injector 4 (INJ4) | injector_out | SL4-A-4 | Injection channel 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 | SL4-A-3 | Injection channel 3 | injector_out | corroborated | |
| OEM-B-4 | Injector 2 (INJ2) | injector_out | SL4-A-2 | Injection channel 2 | injector_out | corroborated | |
| OEM-B-5 | Injector 1 (INJ1) | injector_out | SL4-A-1 | Injection channel 1 | injector_out | corroborated | |
| OEM-B-6 | Radiator fan control (FANC) | low_side_out | SL4-A-14 | Auxiliary output 5 | switch_out | corroborated | |
| OEM-B-7 | Reverse lockout solenoid (RVS, Type-S) | low_side_out | — | — | — | corroborated | |
| OEM-B-8 | Coolant temp sensor (ECT) | temp_in | SL4-B-14 | Analog input 4 | analog_in | corroborated | |
| OEM-B-9 | VTEC oil pressure switch (VTPSW) | digital_in | SL4-A-22 | Digital input 3 | digital_in | corroborated | |
| OEM-E-1 | Immobilizer fuel pump relay (IMO FPR) | low_side_out | SL4-A-15 | Auxiliary output 6 | switch_out | corroborated | |
| OEM-E-14 | Fuel tank pressure sensor (FTP) | analog_in | SL4-B-20 | Analog input 7 (switchable 1k pull-up) | analog_in | corroborated | |
| OEM-E-15 | Electrical load detector (ELD) | analog_in | SL4-B-21 | Analog input 8 (switchable 1k pull-up) | analog_in | corroborated | |
| OEM-E-16 | Power steering pressure switch (PSPSW) | digital_in | SL4-A-23 | Digital input 4 | digital_in | corroborated | |
| OEM-E-18 | A/C clutch relay (ACC) | low_side_out | SL4-A-16 | Auxiliary output 7 | switch_out | corroborated | |
| OEM-E-2 | Secondary heated O2 sensor (SHO2S) | lambda_nb_in | SL4-B-13 | Analog input 3 | analog_in | corroborated | |
| OEM-E-20 | Brake switch / interlock (2WBS) | digital_in | SL4-A-24 | Digital input 5 | digital_in | single_source | |
| OEM-E-21 | Evap vent shut valve (VSV) | low_side_out | — | — | — | corroborated | |
| OEM-E-22 | Brake switch (BKSW) | digital_in | SL4-A-25 | Digital input 6 | 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 | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | 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 | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | corroborated | |
| OEM-E-5 | Sensor 5V supply 3 (VCC3) | vref | SL4-B-2 | Sensor supply Vref1 5.0V | vref | corroborated | |
| OEM-E-6 | Secondary O2 heater control (SO2SHTC) | low_side_out | SL4-A-10 | Auxiliary output 1 | switch_out | corroborated | |
| OEM-E-7 | Main relay control (MRLY) | low_side_out | SL4-B-3 | EFI relay output (low side, 200 mA) | low_side_out | corroborated | |
| OEM-E-8 | A/F sensor heater relay control (AFSHTCR) | low_side_out | SL4-A-17 | Auxiliary output 8 | switch_out | corroborated | |
| OEM-E-9 | Ignition switch signal (IG1) | digital_in | SL4-B-4 | Ignition switch input | 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 | SL4-A-34 | 0.85 | no route | Aux 9–10 14V supply | — | |
| W4 | SP-14V-1 | SL4-B-1 | 0.85 | no route | ECU 14V supply | — | |
| W5 | OEM-A-23 | SP-GND-1 | 0.85 | no route | Logic ground 2 (LG2) | — | |
| W6 | OEM-A-24 | SP-GND-1 | 0.85 | no route | Logic ground 1 (LG1) | — | |
| W7 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 (PG2) | — | |
| W8 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 (PG1) | — | |
| W9 | OEM-E-3 | SP-GND-1 | 0.85 | no route | Logic ground 3 (LG3) | — | |
| W10 | SP-GND-1 | SL4-B-18 | 0.85 | no route | ECU ground | — | |
| W11 | SP-GND-1 | SL4-B-26 | 0.85 | no route | ECU ground | — | |
| W12 | OEM-A-10 | SP-0V-1 | 0.5 | no route | Sensor ground 2 (SG2) | — | |
| W13 | OEM-A-11 | SP-0V-1 | 0.5 | no route | Sensor ground 1 (SG1) | — | |
| W14 | OEM-E-4 | SP-0V-1 | 0.5 | no route | Sensor ground 3 (SG3) | — | |
| W15 | SP-0V-1 | SL4-B-10 | 0.5 | no route | Analog sensor 0V reference | — | |
| W16 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 (VCC2) | — | |
| W17 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (VCC1) | — | |
| W18 | OEM-E-5 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 3 (VCC3) | — | |
| W19 | SP-5V1-1 | SL4-B-2 | 0.5 | no route | Sensor supply Vref1 5.0V | — | |
| W20 | OEM-A-7 | SL4-B-5 | 0.5 | no route | Crank position sensor (CKP) | — | |
| W21 | SP-0V-1 | SL4-B-6 | 0.5 | no route | Crank index sensor − | — | |
| W22 | OEM-A-25 | SL4-B-7 | 0.5 | no route | Camshaft position A (CMP A) | — | |
| W23 | SP-0V-1 | SL4-B-8 | 0.5 | no route | Sync sensor − | — | |
| W24 | OEM-A-9 | SL4-B-16 | 0.5 | no route | Knock sensor (KS) | — | |
| W25 | OEM-A-30 | SL4-A-26 | 0.5 | no route | Ignition coil 1 (IGPLS1) | — | |
| W26 | OEM-A-29 | SL4-A-27 | 0.5 | no route | Ignition coil 2 (IGPLS2) | — | |
| W27 | OEM-A-28 | SL4-A-28 | 0.5 | no route | Ignition coil 3 (IGPLS3) | — | |
| W28 | OEM-A-27 | SL4-A-29 | 0.5 | no route | Ignition coil 4 (IGPLS4) | — | |
| W29 | OEM-B-5 | SL4-A-1 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W30 | OEM-B-4 | SL4-A-2 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W31 | OEM-B-3 | SL4-A-3 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W32 | OEM-B-2 | SL4-A-4 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W33 | OEM-E-9 | SL4-B-4 | 0.5 | no route | Ignition switch signal (IG1) | — | |
| W34 | OEM-E-7 | SL4-B-3 | 0.5 | no route | Main relay control (MRLY) | — | |
| W35 | OEM-B-6 | SL4-A-14 | 0.5 | no route | Radiator fan control (FANC) | — | |
| W36 | OEM-E-1 | SL4-A-15 | 0.5 | no route | Immobilizer fuel pump relay (IMO FPR) | — | |
| W37 | OEM-E-18 | SL4-A-16 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W38 | OEM-E-8 | SL4-A-17 | 0.5 | no route | A/F sensor heater relay control (AFSHTCR) | — | |
| W39 | OEM-E-6 | SL4-A-10 | 0.5 | no route | Secondary O2 heater control (SO2SHTC) | — | |
| W40 | OEM-A-1 | SL4-A-11 | 0.5 | no route | A/F sensor heater control (AFSHTC) | — | |
| W41 | OEM-A-12 | SL4-A-12 | 0.5 | no route | Idle air control valve (IACV) | — | |
| W42 | OEM-B-15 | SL4-A-13 | 0.5 | no route | VTEC solenoid (VTS) | — | |
| W43 | OEM-B-1 | SL4-A-18 | 0.5 | no route | VTC oil control solenoid (+) | — | |
| W44 | OEM-B-18 | SL4-A-19 | 0.5 | no route | Alternator control (ALTC) | — | |
| W45 | OEM-A-19 | SL4-B-11 | 0.5 | no route | Manifold absolute pressure (MAP) | — | |
| W46 | OEM-A-15 | SL4-B-12 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W47 | OEM-E-2 | SL4-B-13 | 0.5 | no route | Secondary heated O2 sensor (SHO2S) | — | |
| W48 | OEM-B-8 | SL4-B-14 | 0.5 | no route | Coolant temp sensor (ECT) | — | |
| W49 | OEM-B-17 | SL4-B-15 | 0.5 | no route | Intake air temp sensor (IAT) | — | |
| W50 | OEM-B-13 | SL4-B-19 | 0.5 | no route | Alternator FR signal (ALTF) | — | |
| W51 | OEM-E-14 | SL4-B-20 | 0.5 | no route | Fuel tank pressure sensor (FTP) | — | |
| W52 | OEM-E-15 | SL4-B-21 | 0.5 | no route | Electrical load detector (ELD) | — | |
| W53 | OEM-A-18 | SL4-A-20 | 0.5 | no route | Vehicle speed sensor (VSS, M/T) | — | |
| W54 | OEM-B-10 | SL4-A-21 | 0.5 | no route | Alternator L signal (ALTL) | — | |
| W55 | OEM-B-9 | SL4-A-22 | 0.5 | no route | VTEC oil pressure switch (VTPSW) | — | |
| W56 | OEM-E-16 | SL4-A-23 | 0.5 | no route | Power steering pressure switch (PSPSW) | — | |
| W57 | OEM-E-20 | SL4-A-24 | 0.5 | no route | Brake switch / interlock (2WBS) | — | |
| W58 | OEM-E-22 | SL4-A-25 | 0.5 | no route | Brake switch (BKSW) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 1318682-6 | TE | K-series ECU harness plug A (040-3 HD plug assy, 31P) | 1.000 | ea |
| connector | 353029-1 | TE | K-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P) | 1.000 | ea |
| connector | 353826-1 | TE | K-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P) | 1.000 | ea |
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 45.000 | ea |
| terminal | 316836-1 | TE | Multilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²) | 50.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (19)
| 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 | NET_FAMILY | OEM-B-1 ↔ SL4-A-18 | OEM-B-1 "VTC oil control solenoid (+)" [low_side_out] is wired to SL4-A-18 "Auxiliary output 9" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-B-18 ↔ SL4-A-19 | OEM-B-18 "Alternator control (ALTC)" [low_side_out] is wired to SL4-A-19 "Auxiliary output 10" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | SUPPLY_GROUP | OEM-A-20 + OEM-A-21 + OEM-E-5 + SL4-B-2 + 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-1 ↔ SL4-A-11 | OEM-A-1 "A/F sensor heater control (AFSHTC)" [low_side_out] is wired to SL4-A-11 "Auxiliary output 2" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-11 ↔ SL4-B-8 | OEM-A-11 "Sensor ground 1 (SG1)" [sensor_ground] is wired to SL4-B-8 "Sync sensor −" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-A-12 ↔ SL4-A-12 | OEM-A-12 "Idle air control valve (IACV)" [low_side_out] is wired to SL4-A-12 "Auxiliary output 3" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B-15 ↔ SL4-A-13 | OEM-B-15 "VTEC solenoid (VTS)" [low_side_out] is wired to SL4-A-13 "Auxiliary output 4" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B-17 ↔ SL4-B-15 | OEM-B-17 "Intake air temp sensor (IAT)" [temp_in] is wired to SL4-B-15 "Analog input 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-B-6 ↔ SL4-A-14 | OEM-B-6 "Radiator fan control (FANC)" [low_side_out] is wired to SL4-A-14 "Auxiliary output 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B-8 ↔ SL4-B-14 | OEM-B-8 "Coolant temp sensor (ECT)" [temp_in] is wired to SL4-B-14 "Analog input 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-E-1 ↔ SL4-A-15 | OEM-E-1 "Immobilizer fuel pump relay (IMO FPR)" [low_side_out] is wired to SL4-A-15 "Auxiliary output 6" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-E-18 ↔ SL4-A-16 | OEM-E-18 "A/C clutch relay (ACC)" [low_side_out] is wired to SL4-A-16 "Auxiliary output 7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-E-6 ↔ SL4-A-10 | OEM-E-6 "Secondary O2 heater control (SO2SHTC)" [low_side_out] is wired to SL4-A-10 "Auxiliary output 1" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-E-8 ↔ SL4-A-17 | OEM-E-8 "A/F sensor heater relay control (AFSHTCR)" [low_side_out] is wired to SL4-A-17 "Auxiliary output 8" [switch_out]. Configure this output as low side. |
| info | UNMAPPED | OEM | 14 optional OEM pins are not mapped: OEM-A-16 A/F sensor - (AFS-, wideband Vs); OEM-A-22 A/F sensor heater supply (AFSHTC+); OEM-A-6 A/F sensor + (AFS+, wideband Ip); 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-21 Evap vent shut valve (VSV); 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) |
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 26: Camshaft position B (CMP B): no free cam_hall/cam_vr/frequency_in input on Emtron SL4 Not wired: - SL4-B 17: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-B 21: Evap canister purge valve (PCS): no free low_side/ls_hs/injector/hbridge on Emtron SL4 - OEM-B 23: VTC oil control solenoid (-): no free low_side/ls_hs/injector/hbridge on Emtron SL4 - OEM-B 7: Reverse lockout solenoid (RVS, Type-S): no free low_side/ls_hs/injector/hbridge on Emtron SL4 - OEM-E 21: Evap vent shut valve (VSV): no free low_side/ls_hs/injector/hbridge on Emtron SL4 - OEM-E 31: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on Emtron SL4 - OEM-E 26: Engine speed pulse / tacho (NEP): no free tacho/frequency_out/low_side/ls_hs on Emtron SL4 - OEM-A 6: A/F sensor + (AFS+, wideband Ip): no free wb_ip on Emtron SL4 - OEM-A 16: A/F sensor - (AFS-, wideband Vs): no free wb_vs on Emtron SL4 - OEM-A 22: A/F sensor heater supply (AFSHTC+): no free heater_feed on Emtron SL4 - OEM-E 23: K-line (diagnostic): no free k_line on Emtron SL4 - OEM-E 24: Multiplex communication (SEFMJ): no free k_line on Emtron SL4 - 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 | Emtron SL4/SL6/SL8 ECU datasheets | https://docs.emtronaustralia.com.au/engine-management/datasheets/index.html | archive | 2026-10-05 | 1e22846cec94 |
| 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 | Link: CIVICLink K20X (HC20X) DC5 installation manual | https://linkecu.com/documentation/237-4000%20DC5.pdf | archive | 2026-10-05 | 8a1a71301571 |
| 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 |