VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW → ECUMASTER EMU Black (auto)
VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW — ECUMASTER — EMU Black
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-12
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 64 wires · 8 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-T121-121 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-T121-21 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | EMUBLACK-Black-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-T121-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-T121-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-GND-1 | EMUBLACK-Black-27 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | EMUBLACK-Black-28 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | EMUBLACK-Grey-17 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | EMUBLACK-Grey-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-T121-108 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-T121-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-T121-34 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-T121-36 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-T121-90 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-T121-91 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | EMUBLACK-Black-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | EMUBLACK-Black-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | EMUBLACK-Black-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-T121-72 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-T121-83 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-T121-99 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-5V1-1 | EMUBLACK-Black-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-T121-73 | SP-5V2-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-T121-98 | SP-5V2-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-5V2-1 | EMUBLACK-Black-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-T121-82 | EMUBLACK-Black-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-T121-86 | EMUBLACK-Black-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-T121-106 | EMUBLACK-Black-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-T121-107 | EMUBLACK-Black-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-T121-102 | EMUBLACK-Grey-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-T121-95 | EMUBLACK-Grey-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-T121-103 | EMUBLACK-Grey-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-T121-94 | EMUBLACK-Black-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-T121-96 | EMUBLACK-Grey-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-T121-89 | EMUBLACK-Grey-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-T121-97 | EMUBLACK-Grey-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-T121-88 | EMUBLACK-Grey-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-T121-118 | EMUBLACK-Grey-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-T121-117 | EMUBLACK-Grey-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-T121-3 | EMUBLACK-Grey-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-T121-53 | EMUBLACK-Black-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-T121-101 | EMUBLACK-Black-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-T121-33 | EMUBLACK-Black-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-T121-84 | EMUBLACK-Black-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-T121-35 | EMUBLACK-Black-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-T121-92 | EMUBLACK-Black-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-T121-93 | EMUBLACK-Black-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-T121-65 | EMUBLACK-Grey-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-T121-66 | EMUBLACK-Grey-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-T121-5 | EMUBLACK-Grey-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-T121-63 | EMUBLACK-Grey-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-T121-104 | EMUBLACK-Grey-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-T121-105 | EMUBLACK-Grey-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-T121-115 | EMUBLACK-Grey-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-T121-47 | EMUBLACK-Grey-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-T121-48 | EMUBLACK-Grey-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-T121-51 | EMUBLACK-Black-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-T121-70 | EMUBLACK-Black-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-T121-68 | EMUBLACK-Black-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-T121-69 | EMUBLACK-Black-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-T121-85 | EMUBLACK-Black-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-T121-54 | EMUBLACK-Black-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-T121-60 | EMUBLACK-Black-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-T121-58 | EMUBLACK-Black-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 | EMUBLACK-Black-13 | EMUBLACK-Black-26 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 2 | EMUBLACK-Black-13 | EMUBLACK-Black-34 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 3 | EMUBLACK-Black-27 | EMUBLACK-Black-13 | open (OL) | power ground must not touch +12 V supply | |
| 4 | EMUBLACK-Black-27 | EMUBLACK-Black-26 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | EMUBLACK-Black-27 | EMUBLACK-Black-34 | open (OL) | power ground must not touch 5 V sensor reference | |
| 6 | EMUBLACK-Black-29 | EMUBLACK-Black-13 | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | EMUBLACK-Black-29 | EMUBLACK-Black-26 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 8 | EMUBLACK-Black-29 | EMUBLACK-Black-34 | open (OL) | sensor ground must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
EMUBLACK-Black
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition coil #5 | — | — | — | — | — | — | — | — |
| 10 | Switch #1 In | — | — | — | — | — | — | — | — |
| 11 | RS232 TXD | — | — | — | — | — | — | — | — |
| 12 | CAN H | — | W63 | — | 0.5 | OEM-T121-60 | — | — | — |
| 13 | Battery +12V | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 14 | Ignition coil #4 | — | W33 | — | 0.5 | OEM-T121-94 | — | — | — |
| 15 | EGT in #2 | — | — | — | — | — | — | — | — |
| 16 | Knock Sensor in #2 | — | W29 | — | 0.5 | OEM-T121-107 | — | — | — |
| 17 | Analog In #3 | — | W44 | — | 0.5 | OEM-T121-84 | — | — | — |
| 18 | TPS In | — | W43 | — | 0.5 | OEM-T121-33 | — | — | — |
| 19 | WBO Ip | — | W57 | — | 0.5 | OEM-T121-51 | — | — | — |
| 2 | EGT in #1 | — | — | — | — | — | — | — | — |
| 20 | VSS In | — | W62 | — | 0.5 | OEM-T121-54 | — | — | — |
| 21 | Camsync In #1 | — | W27 | — | 0.5 | OEM-T121-86 | — | — | — |
| 22 | WBO Rcal | — | — | — | — | — | — | — | — |
| 23 | Switch #2 In | — | — | — | — | — | — | — | — |
| 24 | RS232 RXD | — | — | — | — | — | — | — | — |
| 25 | CAN L | — | W64 | — | 0.5 | OEM-T121-58 | — | — | — |
| 26 | +5V supply | — | W22 | — | 0.5 | SP-5V1-1 | — | — | — |
| 27 | Power Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 28 | Ecu Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 29 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Knock Sensor in #1 | — | W28 | — | 0.5 | OEM-T121-106 | — | — | — |
| 30 | Analog In #4 | — | W45 | — | 0.5 | OEM-T121-35 | — | — | — |
| 31 | Analog In #1 | — | W41 | — | 0.5 | OEM-T121-53 | — | — | — |
| 32 | IAT In | — | W61 | — | 0.5 | OEM-T121-85 | — | — | — |
| 33 | WBO VGND | — | — | — | — | — | — | — | — |
| 34 | +5V supply | — | W25 | — | 0.5 | SP-5V2-1 | — | — | — |
| 35 | Analog In #5 | — | W46 | — | 0.5 | OEM-T121-92 | — | — | — |
| 36 | Switch #3 In | — | — | — | — | — | — | — | — |
| 37 | Analog In #6 | — | W59 | — | 0.5 | OEM-T121-68 | — | — | — |
| 38 | Sensor Ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 39 | Sensor Ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 4 | Analog In #2 | — | W42 | — | 0.5 | OEM-T121-101 | — | — | — |
| 5 | CLT In | — | W47 | — | 0.5 | OEM-T121-93 | — | — | — |
| 6 | WBO Vs | — | W58 | — | 0.5 | OEM-T121-70 | — | — | — |
| 7 | Camsync In #2 | — | — | — | — | — | — | — | — |
| 8 | Primary trigger | — | W26 | — | 0.5 | OEM-T121-82 | — | — | — |
| 9 | Flex Fuel In | — | W60 | — | 0.5 | OEM-T121-69 | — | — | — |
EMUBLACK-Grey
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition coil #6 | — | — | — | — | — | — | — | — |
| 10 | H-Bridge #1 Winding B | — | W39 | — | 0.5 | OEM-T121-117 | — | — | — |
| 11 | H-Bridge #2 Winding B | — | — | — | — | — | — | — | — |
| 12 | AUX 5 | — | W53 | — | 0.5 | OEM-T121-105 | — | — | — |
| 13 | AUX 2 / Injector #8 | — | W49 | — | 0.5 | OEM-T121-66 | — | — | — |
| 14 | Injector #5 | — | W55 | — | 0.5 | OEM-T121-47 | — | — | — |
| 15 | Injector #2 | — | W35 | — | 0.5 | OEM-T121-89 | — | — | — |
| 16 | Ignition coil #2 | — | W31 | — | 0.5 | OEM-T121-95 | — | — | — |
| 17 | Power Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Ignition +12V | — | W40 | — | 0.5 | OEM-T121-3 | — | — | — |
| 19 | WBO Heater | — | W50 | — | 0.5 | OEM-T121-5 | — | — | — |
| 2 | H-Bridge #1 Winding A | — | W38 | — | 0.5 | OEM-T121-118 | — | — | — |
| 20 | AUX 4 / Tacho | — | W52 | — | 0.5 | OEM-T121-104 | — | — | — |
| 21 | AUX 1 / Injector #7 | — | W48 | — | 0.5 | OEM-T121-65 | — | — | — |
| 22 | Injector #6 | — | W56 | — | 0.5 | OEM-T121-48 | — | — | — |
| 23 | Injector #3 | — | W36 | — | 0.5 | OEM-T121-97 | — | — | — |
| 24 | Power Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | H-Bridge #2 Winding A | — | — | — | — | — | — | — | — |
| 4 | AUX 6 | — | W54 | — | 0.5 | OEM-T121-115 | — | — | — |
| 5 | AUX 3 | — | W51 | — | 0.5 | OEM-T121-63 | — | — | — |
| 6 | Injector #4 | — | W37 | — | 0.5 | OEM-T121-88 | — | — | — |
| 7 | Injector #1 | — | W34 | — | 0.5 | OEM-T121-96 | — | — | — |
| 8 | Ignition coil #1 | — | W30 | — | 0.5 | OEM-T121-102 | — | — | — |
| 9 | Ignition coil #3 | — | W32 | — | 0.5 | OEM-T121-103 | — | — | — |
OEM-T121
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 101 | Boost pressure sensor (G31) | — | W42 | — | 0.5 | EMUBLACK-Black-4 | — | — | — |
| 102 | Ignition coil 1 (N127) | — | W30 | — | 0.5 | EMUBLACK-Grey-8 | — | — | — |
| 103 | Ignition coil 3 (N158) | — | W32 | — | 0.5 | EMUBLACK-Grey-9 | — | — | — |
| 104 | Boost control solenoid (N75) | — | W52 | — | 0.5 | EMUBLACK-Grey-20 | — | — | — |
| 105 | Diverter valve (N249) | — | W53 | — | 0.5 | EMUBLACK-Grey-12 | — | — | — |
| 106 | Knock sensor 1 (G61) | — | W28 | — | 0.5 | EMUBLACK-Black-3 | — | — | — |
| 107 | Knock sensor 2 (G66) | — | W29 | — | 0.5 | EMUBLACK-Black-16 | — | — | — |
| 108 | Sensor ground | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 115 | VVT camshaft adjustment valve (N205) | — | W54 | — | 0.5 | EMUBLACK-Grey-4 | — | — | — |
| 117 | Throttle motor G186 (+) | — | W39 | — | 0.5 | EMUBLACK-Grey-10 | — | — | — |
| 118 | Throttle motor G186 (−) | — | W38 | — | 0.5 | EMUBLACK-Grey-2 | — | — | — |
| 121 | ECM + coil power (J271 relay feed) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | ECU ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | ECM power (J271 relay feed) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | MAF sensor supply (G70) | — | — | — | — | — | — | — | — |
| 29 | MAF sensor ground (G70) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Ignition switch +12V (term 15) | — | W40 | — | 0.5 | EMUBLACK-Grey-18 | — | — | — |
| 33 | Accelerator pedal position 1 (G79) | — | W43 | — | 0.5 | EMUBLACK-Black-18 | — | — | — |
| 34 | Accelerator pedal position 1 ground (G79) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 35 | Accelerator pedal position 2 (G185) | — | W45 | — | 0.5 | EMUBLACK-Black-30 | — | — | — |
| 36 | Accelerator pedal position 2 ground (G185) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 37 | Engine speed signal (tacho to cluster) | — | — | — | — | — | — | — | — |
| 43 | K-line diagnostics (OBD pin 7) | — | — | — | — | — | — | — | — |
| 47 | Check engine light (MIL) | — | W55 | — | 0.5 | EMUBLACK-Grey-14 | — | — | — |
| 48 | EPC warning light | — | W56 | — | 0.5 | EMUBLACK-Grey-22 | — | — | — |
| 5 | Wideband lambda heater (Z19) | — | W50 | — | 0.5 | EMUBLACK-Grey-19 | — | — | — |
| 51 | Wideband lambda pump (G39) | — | W57 | — | 0.5 | EMUBLACK-Black-19 | — | — | — |
| 52 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 53 | MAF sensor signal (G70) | — | W41 | — | 0.5 | EMUBLACK-Black-31 | — | — | — |
| 54 | Road speed signal (VSS) | — | W62 | — | 0.5 | EMUBLACK-Black-20 | — | — | — |
| 58 | CAN bus low | — | W64 | — | 0.5 | EMUBLACK-Black-25 | — | — | — |
| 60 | CAN bus high | — | W63 | — | 0.5 | EMUBLACK-Black-12 | — | — | — |
| 62 | Battery constant +12V (term 30) | — | — | — | — | — | — | — | — |
| 63 | Post-cat lambda heater (Z29) | — | W51 | — | 0.5 | EMUBLACK-Grey-5 | — | — | — |
| 64 | EVAP canister valve (N80) | — | — | — | — | — | — | — | — |
| 65 | Fuel pump relay control | — | W48 | — | 0.5 | EMUBLACK-Grey-21 | — | — | — |
| 66 | Secondary-air pump relay (J299) | — | W49 | — | 0.5 | EMUBLACK-Grey-13 | — | — | — |
| 68 | Post-cat lambda signal (G130) | — | W59 | — | 0.5 | EMUBLACK-Black-37 | — | — | — |
| 69 | Post-cat lambda signal (G130) | — | W60 | — | 0.5 | EMUBLACK-Black-9 | — | — | — |
| 70 | Wideband lambda Nernst signal (G39) | — | W58 | — | 0.5 | EMUBLACK-Black-6 | — | — | — |
| 71 | Wideband lambda Nernst signal (G39) | — | — | — | — | — | — | — | — |
| 72 | Accelerator pedal position 1 5V supply (G79) | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 73 | Accelerator pedal position 2 5V supply (G185) | — | W23 | — | 0.5 | SP-5V2-1 | — | — | — |
| 82 | Crank position sensor (G28) | — | W26 | — | 0.5 | EMUBLACK-Black-8 | — | — | — |
| 83 | Throttle position sensor 5V supply (G187/G188) | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| 84 | Throttle position sensor 1 (G187) | — | W44 | — | 0.5 | EMUBLACK-Black-17 | — | — | — |
| 85 | Intake air temperature (G42) | — | W61 | — | 0.5 | EMUBLACK-Black-32 | — | — | — |
| 86 | Camshaft position sensor (G40) | — | W27 | — | 0.5 | EMUBLACK-Black-21 | — | — | — |
| 88 | Injector 4 (N33) | — | W37 | — | 0.5 | EMUBLACK-Grey-6 | — | — | — |
| 89 | Injector 2 (N31) | — | W35 | — | 0.5 | EMUBLACK-Grey-15 | — | — | — |
| 9 | Secondary-air injection valve (N112) | — | — | — | — | — | — | — | — |
| 90 | Crank position sensor ground (G28) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 91 | Throttle position sensor ground (G187/G188) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 92 | Throttle position sensor 2 (G188) | — | W46 | — | 0.5 | EMUBLACK-Black-35 | — | — | — |
| 93 | Engine coolant temperature (G62) | — | W47 | — | 0.5 | EMUBLACK-Black-5 | — | — | — |
| 94 | Ignition coil 4 (N163) | — | W33 | — | 0.5 | EMUBLACK-Black-14 | — | — | — |
| 95 | Ignition coil 2 (N128) | — | W31 | — | 0.5 | EMUBLACK-Grey-16 | — | — | — |
| 96 | Injector 1 (N30) | — | W34 | — | 0.5 | EMUBLACK-Grey-7 | — | — | — |
| 97 | Injector 3 (N32) | — | W36 | — | 0.5 | EMUBLACK-Grey-23 | — | — | — |
| 98 | Cam + boost sensor 5V supply (G40/G31) | — | W24 | — | 0.5 | SP-5V2-1 | — | — | — |
| 99 | Knock sensor 5V supply (G61/G66) | — | W21 | — | 0.5 | SP-5V1-1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W10 | — | 0.5 | OEM-T121-108 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-T121-29 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-T121-34 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-T121-36 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-T121-90 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-T121-91 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | EMUBLACK-Black-29 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | EMUBLACK-Black-38 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | EMUBLACK-Black-39 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-T121-121 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-T121-21 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | EMUBLACK-Black-13 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W19 | — | 0.5 | OEM-T121-72 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-T121-83 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-T121-99 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | EMUBLACK-Black-26 | — | — | — |
SP-5V2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W23 | — | 0.5 | OEM-T121-73 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | OEM-T121-98 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | EMUBLACK-Black-34 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-T121-1 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-T121-2 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | EMUBLACK-Black-27 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | EMUBLACK-Black-28 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | EMUBLACK-Grey-17 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | EMUBLACK-Grey-24 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-T121-1 | ECU ground | ground | EMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24 | Power Ground + Ecu Ground + Power Ground + Power Ground | ground | corroborated | |
| OEM-T121-101 | Boost pressure sensor (G31) | analog_in | EMUBLACK-Black-4 | Analog In #2 | analog_in | corroborated | |
| OEM-T121-102 | Ignition coil 1 (N127) | ignition_out | EMUBLACK-Grey-8 | Ignition coil #1 | ignition_out | corroborated | |
| OEM-T121-103 | Ignition coil 3 (N158) | ignition_out | EMUBLACK-Grey-9 | Ignition coil #3 | ignition_out | corroborated | |
| OEM-T121-104 | Boost control solenoid (N75) | low_side_out | EMUBLACK-Grey-20 | AUX 4 / Tacho | low_side_out | corroborated | |
| OEM-T121-105 | Diverter valve (N249) | low_side_out | EMUBLACK-Grey-12 | AUX 5 | low_side_out | corroborated | |
| OEM-T121-106 | Knock sensor 1 (G61) | knock_in | EMUBLACK-Black-3 | Knock Sensor in #1 | knock_in | corroborated | |
| OEM-T121-107 | Knock sensor 2 (G66) | knock_in | EMUBLACK-Black-16 | Knock Sensor in #2 | knock_in | corroborated | |
| OEM-T121-108 | Sensor ground | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-T121-115 | VVT camshaft adjustment valve (N205) | low_side_out | EMUBLACK-Grey-4 | AUX 6 | low_side_out | corroborated | |
| OEM-T121-117 | Throttle motor G186 (+) | hbridge_out | EMUBLACK-Grey-10 | H-Bridge #1 Winding B | hbridge_out | corroborated | |
| OEM-T121-118 | Throttle motor G186 (−) | hbridge_out | EMUBLACK-Grey-2 | H-Bridge #1 Winding A | hbridge_out | corroborated | |
| OEM-T121-121 | ECM + coil power (J271 relay feed) | power_in | EMUBLACK-Black-13 | Battery +12V | power_in | corroborated | |
| OEM-T121-2 | ECU ground | ground | EMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24 | Power Ground + Ecu Ground + Power Ground + Power Ground | ground | corroborated | |
| OEM-T121-21 | ECM power (J271 relay feed) | power_in | EMUBLACK-Black-13 | Battery +12V | power_in | corroborated | |
| OEM-T121-27 | MAF sensor supply (G70) | power_in | — | — | — | corroborated | |
| OEM-T121-29 | MAF sensor ground (G70) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-T121-3 | Ignition switch +12V (term 15) | digital_in | EMUBLACK-Grey-18 | Ignition +12V | digital_in | corroborated | |
| OEM-T121-33 | Accelerator pedal position 1 (G79) | analog_in | EMUBLACK-Black-18 | TPS In | analog_in | corroborated | |
| OEM-T121-34 | Accelerator pedal position 1 ground (G79) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-T121-35 | Accelerator pedal position 2 (G185) | analog_in | EMUBLACK-Black-30 | Analog In #4 | analog_in | corroborated | |
| OEM-T121-36 | Accelerator pedal position 2 ground (G185) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-T121-37 | Engine speed signal (tacho to cluster) | tacho_out | — | — | — | corroborated | |
| OEM-T121-43 | K-line diagnostics (OBD pin 7) | serial | — | — | — | corroborated | |
| OEM-T121-47 | Check engine light (MIL) | low_side_out | EMUBLACK-Grey-14 | Injector #5 | injector_out | corroborated | |
| OEM-T121-48 | EPC warning light | low_side_out | EMUBLACK-Grey-22 | Injector #6 | injector_out | corroborated | |
| OEM-T121-5 | Wideband lambda heater (Z19) | low_side_out | EMUBLACK-Grey-19 | WBO Heater | low_side_out | corroborated | |
| OEM-T121-51 | Wideband lambda pump (G39) | wb_ip | EMUBLACK-Black-19 | WBO Ip | wb_ip | corroborated | |
| OEM-T121-52 | Wideband lambda pump (G39) | wb_ip | — | — | — | corroborated | |
| OEM-T121-53 | MAF sensor signal (G70) | analog_in | EMUBLACK-Black-31 | Analog In #1 | analog_in | corroborated | |
| OEM-T121-54 | Road speed signal (VSS) | digital_in | EMUBLACK-Black-20 | VSS In | digital_in | corroborated | |
| OEM-T121-58 | CAN bus low | can_l | EMUBLACK-Black-25 | CAN L | can_l | corroborated | |
| OEM-T121-60 | CAN bus high | can_h | EMUBLACK-Black-12 | CAN H | can_h | corroborated | |
| OEM-T121-62 | Battery constant +12V (term 30) | power_in | — | — | — | corroborated | |
| OEM-T121-63 | Post-cat lambda heater (Z29) | low_side_out | EMUBLACK-Grey-5 | AUX 3 | low_side_out | corroborated | |
| OEM-T121-64 | EVAP canister valve (N80) | low_side_out | — | — | — | corroborated | |
| OEM-T121-65 | Fuel pump relay control | low_side_out | EMUBLACK-Grey-21 | AUX 1 / Injector #7 | low_side_out | corroborated | |
| OEM-T121-66 | Secondary-air pump relay (J299) | low_side_out | EMUBLACK-Grey-13 | AUX 2 / Injector #8 | low_side_out | corroborated | |
| OEM-T121-68 | Post-cat lambda signal (G130) | lambda_nb_in | EMUBLACK-Black-37 | Analog In #6 | analog_in | corroborated | |
| OEM-T121-69 | Post-cat lambda signal (G130) | lambda_nb_in | EMUBLACK-Black-9 | Flex Fuel In | analog_in | corroborated | |
| OEM-T121-70 | Wideband lambda Nernst signal (G39) | wb_vs | EMUBLACK-Black-6 | WBO Vs | wb_vs | corroborated | |
| OEM-T121-71 | Wideband lambda Nernst signal (G39) | wb_vs | — | — | — | corroborated | |
| OEM-T121-72 | Accelerator pedal position 1 5V supply (G79) | vref | EMUBLACK-Black-26 | +5V supply | vref | corroborated | |
| OEM-T121-73 | Accelerator pedal position 2 5V supply (G185) | vref | EMUBLACK-Black-34 | +5V supply | vref | corroborated | |
| OEM-T121-82 | Crank position sensor (G28) | trigger_in | EMUBLACK-Black-8 | Primary trigger | trigger_in | corroborated | |
| OEM-T121-83 | Throttle position sensor 5V supply (G187/G188) | vref | EMUBLACK-Black-26 | +5V supply | vref | corroborated | |
| OEM-T121-84 | Throttle position sensor 1 (G187) | analog_in | EMUBLACK-Black-17 | Analog In #3 | analog_in | corroborated | |
| OEM-T121-85 | Intake air temperature (G42) | temp_in | EMUBLACK-Black-32 | IAT In | temp_in | corroborated | |
| OEM-T121-86 | Camshaft position sensor (G40) | trigger_in | EMUBLACK-Black-21 | Camsync In #1 | trigger_in | corroborated | |
| OEM-T121-88 | Injector 4 (N33) | injector_out | EMUBLACK-Grey-6 | Injector #4 | injector_out | corroborated | |
| OEM-T121-89 | Injector 2 (N31) | injector_out | EMUBLACK-Grey-15 | Injector #2 | injector_out | corroborated | |
| OEM-T121-9 | Secondary-air injection valve (N112) | low_side_out | — | — | — | corroborated | |
| OEM-T121-90 | Crank position sensor ground (G28) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-T121-91 | Throttle position sensor ground (G187/G188) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-T121-92 | Throttle position sensor 2 (G188) | analog_in | EMUBLACK-Black-35 | Analog In #5 | analog_in | corroborated | |
| OEM-T121-93 | Engine coolant temperature (G62) | temp_in | EMUBLACK-Black-5 | CLT In | temp_in | corroborated | |
| OEM-T121-94 | Ignition coil 4 (N163) | ignition_out | EMUBLACK-Black-14 | Ignition coil #4 | ignition_out | corroborated | |
| OEM-T121-95 | Ignition coil 2 (N128) | ignition_out | EMUBLACK-Grey-16 | Ignition coil #2 | ignition_out | corroborated | |
| OEM-T121-96 | Injector 1 (N30) | injector_out | EMUBLACK-Grey-7 | Injector #1 | injector_out | corroborated | |
| OEM-T121-97 | Injector 3 (N32) | injector_out | EMUBLACK-Grey-23 | Injector #3 | injector_out | corroborated | |
| OEM-T121-98 | Cam + boost sensor 5V supply (G40/G31) | vref | EMUBLACK-Black-34 | +5V supply | vref | corroborated | |
| OEM-T121-99 | Knock sensor 5V supply (G61/G66) | vref | EMUBLACK-Black-26 | +5V supply | vref | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-T121-121 | SP-14V-1 | 0.85 | no route | ECM + coil power (J271 relay feed) | — | |
| W2 | OEM-T121-21 | SP-14V-1 | 0.85 | no route | ECM power (J271 relay feed) | — | |
| W3 | SP-14V-1 | EMUBLACK-Black-13 | 0.85 | no route | Battery +12V | — | |
| W4 | OEM-T121-1 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W5 | OEM-T121-2 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W6 | SP-GND-1 | EMUBLACK-Black-27 | 0.85 | no route | Power Ground | — | |
| W7 | SP-GND-1 | EMUBLACK-Black-28 | 0.85 | no route | Ecu Ground | — | |
| W8 | SP-GND-1 | EMUBLACK-Grey-17 | 0.85 | no route | Power Ground | — | |
| W9 | SP-GND-1 | EMUBLACK-Grey-24 | 0.85 | no route | Power Ground | — | |
| W10 | OEM-T121-108 | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W11 | OEM-T121-29 | SP-0V-1 | 0.5 | no route | MAF sensor ground (G70) | — | |
| W12 | OEM-T121-34 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 1 ground (G79) | — | |
| W13 | OEM-T121-36 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 2 ground (G185) | — | |
| W14 | OEM-T121-90 | SP-0V-1 | 0.5 | no route | Crank position sensor ground (G28) | — | |
| W15 | OEM-T121-91 | SP-0V-1 | 0.5 | no route | Throttle position sensor ground (G187/G188) | — | |
| W16 | SP-0V-1 | EMUBLACK-Black-29 | 0.5 | no route | Sensor Ground | — | |
| W17 | SP-0V-1 | EMUBLACK-Black-38 | 0.5 | no route | Sensor Ground | — | |
| W18 | SP-0V-1 | EMUBLACK-Black-39 | 0.5 | no route | Sensor Ground | — | |
| W19 | OEM-T121-72 | SP-5V1-1 | 0.5 | no route | Accelerator pedal position 1 5V supply (G79) | — | |
| W20 | OEM-T121-83 | SP-5V1-1 | 0.5 | no route | Throttle position sensor 5V supply (G187/G188) | — | |
| W21 | OEM-T121-99 | SP-5V1-1 | 0.5 | no route | Knock sensor 5V supply (G61/G66) | — | |
| W22 | SP-5V1-1 | EMUBLACK-Black-26 | 0.5 | no route | +5V supply | — | |
| W23 | OEM-T121-73 | SP-5V2-1 | 0.5 | no route | Accelerator pedal position 2 5V supply (G185) | — | |
| W24 | OEM-T121-98 | SP-5V2-1 | 0.5 | no route | Cam + boost sensor 5V supply (G40/G31) | — | |
| W25 | SP-5V2-1 | EMUBLACK-Black-34 | 0.5 | no route | +5V supply | — | |
| W26 | OEM-T121-82 | EMUBLACK-Black-8 | 0.5 | no route | Crank position sensor (G28) | — | |
| W27 | OEM-T121-86 | EMUBLACK-Black-21 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W28 | OEM-T121-106 | EMUBLACK-Black-3 | 0.5 | no route | Knock sensor 1 (G61) | — | |
| W29 | OEM-T121-107 | EMUBLACK-Black-16 | 0.5 | no route | Knock sensor 2 (G66) | — | |
| W30 | OEM-T121-102 | EMUBLACK-Grey-8 | 0.5 | no route | Ignition coil 1 (N127) | — | |
| W31 | OEM-T121-95 | EMUBLACK-Grey-16 | 0.5 | no route | Ignition coil 2 (N128) | — | |
| W32 | OEM-T121-103 | EMUBLACK-Grey-9 | 0.5 | no route | Ignition coil 3 (N158) | — | |
| W33 | OEM-T121-94 | EMUBLACK-Black-14 | 0.5 | no route | Ignition coil 4 (N163) | — | |
| W34 | OEM-T121-96 | EMUBLACK-Grey-7 | 0.5 | no route | Injector 1 (N30) | — | |
| W35 | OEM-T121-89 | EMUBLACK-Grey-15 | 0.5 | no route | Injector 2 (N31) | — | |
| W36 | OEM-T121-97 | EMUBLACK-Grey-23 | 0.5 | no route | Injector 3 (N32) | — | |
| W37 | OEM-T121-88 | EMUBLACK-Grey-6 | 0.5 | no route | Injector 4 (N33) | — | |
| W38 | OEM-T121-118 | EMUBLACK-Grey-2 | 0.5 | no route | Throttle motor G186 (−) | — | |
| W39 | OEM-T121-117 | EMUBLACK-Grey-10 | 0.5 | no route | Throttle motor G186 (+) | — | |
| W40 | OEM-T121-3 | EMUBLACK-Grey-18 | 0.5 | no route | Ignition switch +12V (term 15) | — | |
| W41 | OEM-T121-53 | EMUBLACK-Black-31 | 0.5 | no route | MAF sensor signal (G70) | — | |
| W42 | OEM-T121-101 | EMUBLACK-Black-4 | 0.5 | no route | Boost pressure sensor (G31) | — | |
| W43 | OEM-T121-33 | EMUBLACK-Black-18 | 0.5 | no route | Accelerator pedal position 1 (G79) | — | |
| W44 | OEM-T121-84 | EMUBLACK-Black-17 | 0.5 | no route | Throttle position sensor 1 (G187) | — | |
| W45 | OEM-T121-35 | EMUBLACK-Black-30 | 0.5 | no route | Accelerator pedal position 2 (G185) | — | |
| W46 | OEM-T121-92 | EMUBLACK-Black-35 | 0.5 | no route | Throttle position sensor 2 (G188) | — | |
| W47 | OEM-T121-93 | EMUBLACK-Black-5 | 0.5 | no route | Engine coolant temperature (G62) | — | |
| W48 | OEM-T121-65 | EMUBLACK-Grey-21 | 0.5 | no route | Fuel pump relay control | — | |
| W49 | OEM-T121-66 | EMUBLACK-Grey-13 | 0.5 | no route | Secondary-air pump relay (J299) | — | |
| W50 | OEM-T121-5 | EMUBLACK-Grey-19 | 0.5 | no route | Wideband lambda heater (Z19) | — | |
| W51 | OEM-T121-63 | EMUBLACK-Grey-5 | 0.5 | no route | Post-cat lambda heater (Z29) | — | |
| W52 | OEM-T121-104 | EMUBLACK-Grey-20 | 0.5 | no route | Boost control solenoid (N75) | — | |
| W53 | OEM-T121-105 | EMUBLACK-Grey-12 | 0.5 | no route | Diverter valve (N249) | — | |
| W54 | OEM-T121-115 | EMUBLACK-Grey-4 | 0.5 | no route | VVT camshaft adjustment valve (N205) | — | |
| W55 | OEM-T121-47 | EMUBLACK-Grey-14 | 0.5 | no route | Check engine light (MIL) | — | |
| W56 | OEM-T121-48 | EMUBLACK-Grey-22 | 0.5 | no route | EPC warning light | — | |
| W57 | OEM-T121-51 | EMUBLACK-Black-19 | 0.5 | no route | Wideband lambda pump (G39) | — | |
| W58 | OEM-T121-70 | EMUBLACK-Black-6 | 0.5 | no route | Wideband lambda Nernst signal (G39) | — | |
| W59 | OEM-T121-68 | EMUBLACK-Black-37 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W60 | OEM-T121-69 | EMUBLACK-Black-9 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W61 | OEM-T121-85 | EMUBLACK-Black-32 | 0.5 | no route | Intake air temperature (G42) | — | |
| W62 | OEM-T121-54 | EMUBLACK-Black-20 | 0.5 | no route | Road speed signal (VSS) | — | |
| W63 | OEM-T121-60 | EMUBLACK-Black-12 | 0.5 | no route | CAN bus high | — | |
| W64 | OEM-T121-58 | EMUBLACK-Black-25 | 0.5 | no route | CAN bus low | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (9)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | DBW_MOTOR_CURRENT | EMUBLACK-Grey-10 | Cannot confirm EMU Black can drive the throttle motor: EMUBLACK-Grey-10 "H-Bridge #1 Winding B" is rated 6.5 A peak, but the motor stall current at OEM-T121-117 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | DBW_MOTOR_CURRENT | EMUBLACK-Grey-2 | Cannot confirm EMU Black can drive the throttle motor: EMUBLACK-Grey-2 "H-Bridge #1 Winding A" is rated 6.5 A peak, but the motor stall current at OEM-T121-118 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | DBW_SHARED_5V | EMUBLACK-Black-26 + OEM-T121-72 + OEM-T121-83 + OEM-T121-99 + SP-5V1-1 | These 5 V supplies are separate in the stock car (OEM-T121-72 [pedal1], OEM-T121-83 [tps], OEM-T121-99 [knock]) and here share one ECU 5 V (EMUBLACK-Black-26). On a drive-by-wire car the OEM splits them so one short or fault can't corrupt both throttle/pedal tracks at once. EMU Black has 2 5 V sensor supply pin(s). All are in use, so decide: accept the shared supply (and rely on the ECU's DBW fault checks), or add a separate regulated 5 V for the sub tracks. |
| warn | DBW_SHARED_5V | EMUBLACK-Black-34 + OEM-T121-73 + OEM-T121-98 + SP-5V2-1 | These 5 V supplies are separate in the stock car (OEM-T121-73 [pedal2], OEM-T121-98 [cam_boost]) and here share one ECU 5 V (EMUBLACK-Black-34). On a drive-by-wire car the OEM splits them so one short or fault can't corrupt both throttle/pedal tracks at once. EMU Black has 2 5 V sensor supply pin(s). All are in use, so decide: accept the shared supply (and rely on the ECU's DBW fault checks), or add a separate regulated 5 V for the sub tracks. |
| warn | SUPPLY_GROUP | EMUBLACK-Black-26 + OEM-T121-72 + OEM-T121-83 + OEM-T121-99 + SP-5V1-1 | Supplies meant to stay independent share one net: OEM-T121-72 [pedal1], OEM-T121-83 [tps], OEM-T121-99 [knock]. 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. |
| warn | SUPPLY_GROUP | EMUBLACK-Black-34 + OEM-T121-73 + OEM-T121-98 + SP-5V2-1 | Supplies meant to stay independent share one net: OEM-T121-73 [pedal2], OEM-T121-98 [cam_boost]. 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-T121-47 ↔ EMUBLACK-Grey-14 | OEM-T121-47 "Check engine light (MIL)" [low_side_out] is wired to EMUBLACK-Grey-14 "Injector #5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-48 ↔ EMUBLACK-Grey-22 | OEM-T121-48 "EPC warning light" [low_side_out] is wired to EMUBLACK-Grey-22 "Injector #6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 7 optional OEM pins are not mapped: OEM-T121-27 MAF sensor supply (G70); OEM-T121-37 Engine speed signal (tacho to cluster); OEM-T121-43 K-line diagnostics (OBD pin 7); OEM-T121-52 Wideband lambda pump (G39); OEM-T121-64 EVAP canister valve (N80); OEM-T121-71 Wideband lambda Nernst signal (G39); OEM-T121-9 Secondary-air injection valve (N112) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-T121-62 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-T121 62: Battery constant +12V (term 30): ECUMASTER EMU Black has no battery-constant input; not needed - OEM-T121 64: EVAP canister valve (N80): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-T121 9: Secondary-air injection valve (N112): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-T121 37: Engine speed signal (tacho to cluster): no free tacho/frequency_out/low_side/ls_hs on ECUMASTER EMU Black - OEM-T121 52: Wideband lambda pump (G39): no free wb_ip on ECUMASTER EMU Black - OEM-T121 71: Wideband lambda Nernst signal (G39): no free wb_vs on ECUMASTER EMU Black - OEM-T121 43: K-line diagnostics (OBD pin 7): no free k_line on ECUMASTER EMU Black - OEM-T121 27: MAF sensor supply (G70): no rule for class sensor_supply_in; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | ECUMASTER EMU Black — pinout (Black 39-pin / Grey 24-pin) | https://www.ecumaster.com/wp/wp-content/uploads/2020/05/EMU_Black_pinout.pdf | archive | 2026-10-05 | 096b2b4df1bd |
| 3 | community_copy | NefMoto: ME7.5 ECU bench-flashing power/ground pins | http://nefmoto.com/wiki/index.php?title=ECU_Bench_Flashing | — | — | — |
| 3 | community_copy | vwressources: Bosch Motronic ME7.5 (AMK/ARY/AUQ/ARX/AUM) T121 pinout | https://www.vwressources.planethoster.world/me75_pinout.html | — | — | — |