Testing Simple loom
Emtron — KV8
⚠ NOT CHECKED. Don't build from this.
Drawn by [email protected] · Rev 1 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 6: read the Findings page before cutting any wire |
| Size of the job | 0 wires · 4 connectors · 4 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|
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 |
|---|---|---|---|---|---|
| No supply/ground nets found to cross-check. | |||||
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| 1 | Before edits | [email protected] | 2026-10-06 |
Schematic
Connectors
ECU-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | — | — | — | — | — | — | — | — | — |
| 4 | — | — | — | — | — | — | — | — | — |
| 5 | — | — | — | — | — | — | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Lambda 1 heater − | — | — | — | — | — | — | — | — |
| 11 | Lambda 2 heater − | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | Lambda 1 heater + | — | — | — | — | — | — | — | — |
| 17 | Lambda 2 heater + | — | — | — | — | — | — | — | — |
| 18 | Lambda 1 Nernst cell (Vs) | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | Lambda 2 cal resistor | — | — | — | — | — | — | — | — |
| 21 | Lambda 2 Nernst cell (Vs) | — | — | — | — | — | — | — | — |
| 22 | Lambda 2 pump cell (Ip) | — | — | — | — | — | — | — | — |
| 23 | Lambda 2 virtual ground | — | — | — | — | — | — | — | — |
| 24 | Lambda 1 cal resistor | — | — | — | — | — | — | — | — |
| 25 | Lambda 1 pump cell (Ip) | — | — | — | — | — | — | — | — |
| 26 | Lambda 1 virtual ground | — | — | — | — | — | — | — | — |
ECU-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection 1 | — | — | — | — | — | — | — | — |
| 2 | Injection 2 | — | — | — | — | — | — | — | — |
| 3 | Injection 3 | — | — | — | — | — | — | — | — |
| 4 | Injection 4 | — | — | — | — | — | — | — | — |
| 5 | Injection 5 | — | — | — | — | — | — | — | — |
| 6 | Injection 6 | — | — | — | — | — | — | — | — |
| 7 | Injection 7 | — | — | — | — | — | — | — | — |
| 8 | Injection 8 | — | — | — | — | — | — | — | — |
| 9 | ECU ground | — | — | — | — | — | — | — | — |
| 10 | Aux 1 | — | — | — | — | — | — | — | — |
| 11 | Aux 2 | — | — | — | — | — | — | — | — |
| 12 | Aux 3 | — | — | — | — | — | — | — | — |
| 13 | Aux 4 | — | — | — | — | — | — | — | — |
| 14 | Aux 5 | — | — | — | — | — | — | — | — |
| 15 | Aux 6 | — | — | — | — | — | — | — | — |
| 16 | Aux 7 | — | — | — | — | — | — | — | — |
| 17 | Aux 8 | — | — | — | — | — | — | — | — |
| 18 | Aux 9 | — | — | — | — | — | — | — | — |
| 19 | Aux 10 | — | — | — | — | — | — | — | — |
| 20 | Aux 11 | — | — | — | — | — | — | — | — |
| 21 | Aux 12 | — | — | — | — | — | — | — | — |
| 22 | Aux 13 | — | — | — | — | — | — | — | — |
| 23 | Aux 14 | — | — | — | — | — | — | — | — |
| 24 | Aux 15 | — | — | — | — | — | — | — | — |
| 25 | Aux 16 | — | — | — | — | — | — | — | — |
| 26 | Ignition 1 | — | — | — | — | — | — | — | — |
| 27 | Ignition 2 | — | — | — | — | — | — | — | — |
| 28 | Ignition 3 | — | — | — | — | — | — | — | — |
| 29 | Ignition 4 | — | — | — | — | — | — | — | — |
| 30 | Ignition 5 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 7 | — | — | — | — | — | — | — | — |
| 33 | Ignition 8 | — | — | — | — | — | — | — | — |
| 34 | ECU ground | — | — | — | — | — | — | — | — |
ECU-C
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | — | — | — | — | — | — | — |
| 2 | Analog in 1 | — | — | — | — | — | — | — | — |
| 3 | Analog in 2 | — | — | — | — | — | — | — | — |
| 4 | Analog in 3 | — | — | — | — | — | — | — | — |
| 5 | Analog in 4 | — | — | — | — | — | — | — | — |
| 6 | Analog in 5 | — | — | — | — | — | — | — | — |
| 7 | Analog in 6 | — | — | — | — | — | — | — | — |
| 8 | Analog in 7 | — | — | — | — | — | — | — | — |
| 9 | Analog in 8 | — | — | — | — | — | — | — | — |
| 10 | Analog in 9 | — | — | — | — | — | — | — | — |
| 11 | Analog in 10 | — | — | — | — | — | — | — | — |
| 12 | Analog in 11 | — | — | — | — | — | — | — | — |
| 13 | Analog in 12 | — | — | — | — | — | — | — | — |
| 14 | Analog in 13 | — | — | — | — | — | — | — | — |
| 15 | Analog in 14 | — | — | — | — | — | — | — | — |
| 16 | Analog in 15 | — | — | — | — | — | — | — | — |
| 17 | Analog sensor 0V reference | — | — | — | — | — | — | — | — |
| 18 | Digital in 9 | — | — | — | — | — | — | — | — |
| 19 | Digital in 10 | — | — | — | — | — | — | — | — |
| 20 | Digital in 11 | — | — | — | — | — | — | — | — |
| 21 | Digital in 12 | — | — | — | — | — | — | — | — |
| 22 | Digital in 13 | — | — | — | — | — | — | — | — |
| 23 | Digital in 14 | — | — | — | — | — | — | — | — |
| 24 | Analog in 16 | — | — | — | — | — | — | — | — |
| 25 | Analog sensor 0V reference | — | — | — | — | — | — | — | — |
| 26 | ECU ground | — | — | — | — | — | — | — | — |
| 27 | Digital in 1 | — | — | — | — | — | — | — | — |
| 28 | Digital in 2 | — | — | — | — | — | — | — | — |
| 29 | Digital in 3 | — | — | — | — | — | — | — | — |
| 30 | Digital in 4 | — | — | — | — | — | — | — | — |
| 31 | Digital in 5 | — | — | — | — | — | — | — | — |
| 32 | Digital in 6 | — | — | — | — | — | — | — | — |
| 33 | Digital in 7 | — | — | — | — | — | — | — | — |
| 34 | Digital in 8 | — | — | — | — | — | — | — | — |
ECU-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU 14V supply | — | — | — | — | — | — | — | — |
| 2 | Aux 13–16 14V supply | — | — | — | — | — | — | — | — |
| 3 | Sensor supply 8V | — | — | — | — | — | — | — | — |
| 4 | Crank index sensor + | — | — | — | — | — | — | — | — |
| 5 | Crank index sensor − | — | — | — | — | — | — | — | — |
| 6 | Sync sensor + | — | — | — | — | — | — | — | — |
| 7 | Sync sensor − | — | — | — | — | — | — | — | — |
| 8 | CAN 1 H | — | — | — | — | — | — | — | — |
| 9 | EFI relay output (low side, 200 mA) | — | — | — | — | — | — | — | — |
| 10 | CAN 2 H | — | — | — | — | — | — | — | — |
| 11 | Knock 1 + | — | — | — | — | — | — | — | — |
| 12 | Knock 1 − | — | — | — | — | — | — | — | — |
| 13 | Shield (crank/cam/knock) | — | — | — | — | — | — | — | — |
| 14 | CAN 1 L | — | — | — | — | — | — | — | — |
| 15 | Ignition switch input | — | — | — | — | — | — | — | — |
| 16 | CAN 2 L | — | — | — | — | — | — | — | — |
| 17 | Knock 2 + | — | — | — | — | — | — | — | — |
| 18 | Knock 2 − | — | — | — | — | — | — | — | — |
| 19 | Analog output 0–5V | — | — | — | — | — | — | — | — |
| 20 | Aux 9–12 14V supply | — | — | — | — | — | — | — | — |
| 21 | Sensor supply Vref1 5.0V | — | — | — | — | — | — | — | — |
| 22 | Sensor supply Vref2 5.0V | — | — | — | — | — | — | — | — |
| 23 | Ethernet Tx+ | — | — | — | — | — | — | — | — |
| 24 | Ethernet Tx− | — | — | — | — | — | — | — | — |
| 25 | Ethernet Rx+ | — | — | — | — | — | — | — | — |
| 26 | Ethernet Rx− | — | — | — | — | — | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| No mapped pins. | |||||||
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 3-1437290-7 | TE | Superseal 1.0 26-way plug | 1.000 | ea |
| connector | 3-1437290-8 | TE | Superseal 1.0 26-way plug, Key 2 | 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 |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (7)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | K_TRIGGER_UNSUPPORTED | KV8 | KV8 does not list the N54 trigger pattern (not found). Confirm the decoder in its documentation or the engine will not run. |
| error | PHYS_REQUIRED_OPEN | ECU-B-34 | ECU-B-34 "ECU ground" is required but not wired. |
| error | PHYS_REQUIRED_OPEN | ECU-B-9 | ECU-B-9 "ECU ground" is required but not wired. |
| error | PHYS_REQUIRED_OPEN | ECU-C-1 | ECU-C-1 "ECU ground" is required but not wired. |
| error | PHYS_REQUIRED_OPEN | ECU-C-26 | ECU-C-26 "ECU ground" is required but not wired. |
| error | PHYS_REQUIRED_OPEN | ECU-D-1 | ECU-D-1 "ECU 14V supply" is required but not wired. |
| warn | DATASET_GAP | KV8 A | 14 of 26 cavities on KV8 A have no pin data (1,2,3,4,5,6,7,8,9,12,13,14,15,19). Anything there is invisible to these checks. |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
No notes.
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 2 | user_dataset | Subaru ECU Matcher dataset (hiubin), vehicleId=1 | — | — | — | — |