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VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW → Link G5 Voodoo Pro V1 (auto)

VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW — Link — G5 Voodoo Pro V1
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 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.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors8: read the Findings page before cutting any wire
Size of the job49 wires · 6 connectors · 0 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Order of work1. 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.

WireFromToGaugeColourCutLabelCrimp ACrimp BPin APin BContinuity
W1OEM-T121-1SP-GND-10.85☐☐☐☐☐☐☐
W2OEM-T121-2SP-GND-10.85☐☐☐☐☐☐☐
W3OEM-T121-72SP-5V1-10.5☐☐☐☐☐☐☐
W4OEM-T121-73SP-5V1-10.5☐☐☐☐☐☐☐
W5OEM-T121-83SP-5V1-10.5☐☐☐☐☐☐☐
W6OEM-T121-98SP-5V1-10.5☐☐☐☐☐☐☐
W7OEM-T121-99SP-5V1-10.5☐☐☐☐☐☐☐
W8SP-5V1-1G5VOODOOPROV-A-A320.5☐☐☐☐☐☐☐
W9OEM-T121-82G5VOODOOPROV-A-A80.5☐☐☐☐☐☐☐
W10OEM-T121-86G5VOODOOPROV-A-A90.5☐☐☐☐☐☐☐
W11OEM-T121-106G5VOODOOPROV-B-B90.5☐☐☐☐☐☐☐
W12OEM-T121-107G5VOODOOPROV-B-B80.5☐☐☐☐☐☐☐
W13OEM-T121-102G5VOODOOPROV-A-A130.5☐☐☐☐☐☐☐
W14OEM-T121-95G5VOODOOPROV-A-A120.5☐☐☐☐☐☐☐
W15OEM-T121-103G5VOODOOPROV-A-A110.5☐☐☐☐☐☐☐
W16OEM-T121-94G5VOODOOPROV-A-A100.5☐☐☐☐☐☐☐
W17OEM-T121-96G5VOODOOPROV-A-A40.5☐☐☐☐☐☐☐
W18OEM-T121-89G5VOODOOPROV-A-A30.5☐☐☐☐☐☐☐
W19OEM-T121-97G5VOODOOPROV-A-A20.5☐☐☐☐☐☐☐
W20OEM-T121-88G5VOODOOPROV-A-A10.5☐☐☐☐☐☐☐
W21OEM-T121-118G5VOODOOPROV-B-B260.5☐☐☐☐☐☐☐
W22OEM-T121-117G5VOODOOPROV-B-B180.5☐☐☐☐☐☐☐
W23OEM-T121-3G5VOODOOPROV-A-A60.5☐☐☐☐☐☐☐
W24OEM-T121-53G5VOODOOPROV-A-A170.5☐☐☐☐☐☐☐
W25OEM-T121-101G5VOODOOPROV-A-A220.5☐☐☐☐☐☐☐
W26OEM-T121-33G5VOODOOPROV-A-A330.5☐☐☐☐☐☐☐
W27OEM-T121-84G5VOODOOPROV-A-A140.5☐☐☐☐☐☐☐
W28OEM-T121-35G5VOODOOPROV-B-B330.5☐☐☐☐☐☐☐
W29OEM-T121-92G5VOODOOPROV-B-B150.5☐☐☐☐☐☐☐
W30OEM-T121-93G5VOODOOPROV-A-A150.5☐☐☐☐☐☐☐
W31OEM-T121-65G5VOODOOPROV-A-A210.5☐☐☐☐☐☐☐
W32OEM-T121-66G5VOODOOPROV-A-A200.5☐☐☐☐☐☐☐
W33OEM-T121-5G5VOODOOPROV-E-E150.5☐☐☐☐☐☐☐
W34OEM-T121-63G5VOODOOPROV-E-E220.5☐☐☐☐☐☐☐
W35OEM-T121-104G5VOODOOPROV-A-A190.5☐☐☐☐☐☐☐
W36OEM-T121-105G5VOODOOPROV-A-A180.5☐☐☐☐☐☐☐
W37OEM-T121-115G5VOODOOPROV-A-A290.5☐☐☐☐☐☐☐
W38OEM-T121-47G5VOODOOPROV-A-A280.5☐☐☐☐☐☐☐
W39OEM-T121-48G5VOODOOPROV-A-A270.5☐☐☐☐☐☐☐
W40OEM-T121-64G5VOODOOPROV-A-A260.5☐☐☐☐☐☐☐
W41OEM-T121-9G5VOODOOPROV-B-B40.5☐☐☐☐☐☐☐
W42OEM-T121-51G5VOODOOPROV-E-E170.5☐☐☐☐☐☐☐
W43OEM-T121-52G5VOODOOPROV-E-E240.5☐☐☐☐☐☐☐
W44OEM-T121-70G5VOODOOPROV-E-E190.5☐☐☐☐☐☐☐
W45OEM-T121-71G5VOODOOPROV-E-E260.5☐☐☐☐☐☐☐
W46OEM-T121-68G5VOODOOPROV-B-B160.5☐☐☐☐☐☐☐
W47OEM-T121-69G5VOODOOPROV-B-B230.5☐☐☐☐☐☐☐
W48OEM-T121-85G5VOODOOPROV-A-A160.5☐☐☐☐☐☐☐
W49OEM-T121-54G5VOODOOPROV-A-A300.5☐☐☐☐☐☐☐

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 AProbe BExpectWhyReading
1OEM-T121-1G5VOODOOPROV-A-A32open (OL)power ground must not touch 5 V sensor reference

If any reading doesn't match, stop and get help before powering up.

Revisions

RevLabelByDate
No revisions yet.

Schematic

G5VOODOOPROV-AG5VOODOOPROV-BG5VOODOOPROV-EOEM-T121SP-5V1SP-GND

Connectors

G5VOODOOPROV-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
A1Injection 4—W20—0.5OEM-T121-88———
A10Ignition 4—W16—0.5OEM-T121-94———
A11Ignition 3—W15—0.5OEM-T121-103———
A12Ignition 2—W14—0.5OEM-T121-95———
A13Ignition 1—W13—0.5OEM-T121-102———
A14Analogue Volt 4—W27—0.5OEM-T121-84———
A15Analogue Temp 1—W30—0.5OEM-T121-93———
A16Analogue Temp 2—W48—0.5OEM-T121-85———
A17Analogue Volt 1—W24—0.5OEM-T121-53———
A18Aux 4—W36—0.5OEM-T121-105———
A19Aux 3—W35—0.5OEM-T121-104———
A2Injection 3—W19—0.5OEM-T121-97———
A20Aux 2—W32—0.5OEM-T121-66———
A21Aux 1—W31—0.5OEM-T121-65———
A22Analogue Volt 2—W25—0.5OEM-T121-101———
A23Digital Input 3————————
A26Aux 8—W40—0.5OEM-T121-64———
A27Aux 7—W39—0.5OEM-T121-48———
A28Aux 6—W38—0.5OEM-T121-47———
A29Aux 5—W37—0.5OEM-T121-115———
A3Injection 2—W18—0.5OEM-T121-89———
A30Digital Input 1—W49—0.5OEM-T121-54———
A31Digital Input 2————————
A32+5V Out—W8—0.5SP-5V1-1———
A33Analogue Volt 3—W26—0.5OEM-T121-33———
A4Injection 1—W17—0.5OEM-T121-96———
A6Ignition Switch—W23—0.5OEM-T121-3———
A8Trigger 1—W9—0.5OEM-T121-82———
A9Trigger 2—W10—0.5OEM-T121-86———

G5VOODOOPROV-B

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
B1Injection 8————————
B10Ignition 8————————
B11Ignition 7————————
B12Ignition 6————————
B13Ignition 5————————
B14Analogue Volt 14————————
B15Analogue Volt 6—W29—0.5OEM-T121-92———
B16Analogue Volt 7—W46—0.5OEM-T121-68———
B18Aux 9—W22—0.5OEM-T121-117———
B19Digital Input 6————————
B2Injection 7————————
B20Digital Input 5————————
B21Digital Input 4————————
B23Analogue Volt 8—W47—0.5OEM-T121-69———
B24Analogue Volt 9————————
B26Aux 10—W21—0.5OEM-T121-118———
B27Digital Input 10————————
B28Digital Input 9————————
B29Digital Input 8————————
B3Injection 6————————
B30Digital Input 7————————
B31Analogue Volt 10————————
B32Analogue Volt 11————————
B33Analogue Volt 5—W28—0.5OEM-T121-35———
B4Injection 5—W41—0.5OEM-T121-9———
B6Analogue Temp 3————————
B7Analogue Temp 4————————
B8Knock 2—W12—0.5OEM-T121-107———
B9Knock 1—W11—0.5OEM-T121-106———

G5VOODOOPROV-E

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
E1Injection 12————————
E10Injection 14 / Ignition 10————————
E11Injection 13 / Ignition 9————————
E12Analogue Volt 12————————
E13Analogue Volt 13————————
E14Aux 11————————
E15Aux 13 / WB Heater 1—W33—0.5OEM-T121-5———
E16RE 1————————
E17IPE 1—W42—0.5OEM-T121-51———
E18APE 1————————
E19MES 1—W44—0.5OEM-T121-70———
E2Injection 11————————
E20Aux 12————————
E22Aux 14 / WB Heater 2—W34—0.5OEM-T121-63———
E23RE 2————————
E24IPE 2—W43—0.5OEM-T121-52———
E25APE 2————————
E26MES 2—W45—0.5OEM-T121-71———
E3Injection 10————————
E4Injection 9————————
E8Injection 16 / Ignition 12————————
E9Injection 15 / Ignition 11————————

OEM-T121

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1ECU ground—W1—0.85SP-GND-1———
101Boost pressure sensor (G31)—W25—0.5G5VOODOOPROV-A-A22———
102Ignition coil 1 (N127)—W13—0.5G5VOODOOPROV-A-A13———
103Ignition coil 3 (N158)—W15—0.5G5VOODOOPROV-A-A11———
104Boost control solenoid (N75)—W35—0.5G5VOODOOPROV-A-A19———
105Diverter valve (N249)—W36—0.5G5VOODOOPROV-A-A18———
106Knock sensor 1 (G61)—W11—0.5G5VOODOOPROV-B-B9———
107Knock sensor 2 (G66)—W12—0.5G5VOODOOPROV-B-B8———
108Sensor ground————————
115VVT camshaft adjustment valve (N205)—W37—0.5G5VOODOOPROV-A-A29———
117Throttle motor G186 (+)—W22—0.5G5VOODOOPROV-B-B18———
118Throttle motor G186 (−)—W21—0.5G5VOODOOPROV-B-B26———
121ECM + coil power (J271 relay feed)————————
2ECU ground—W2—0.85SP-GND-1———
21ECM power (J271 relay feed)————————
27MAF sensor supply (G70)————————
29MAF sensor ground (G70)————————
3Ignition switch +12V (term 15)—W23—0.5G5VOODOOPROV-A-A6———
33Accelerator pedal position 1 (G79)—W26—0.5G5VOODOOPROV-A-A33———
34Accelerator pedal position 1 ground (G79)————————
35Accelerator pedal position 2 (G185)—W28—0.5G5VOODOOPROV-B-B33———
36Accelerator pedal position 2 ground (G185)————————
37Engine speed signal (tacho to cluster)————————
43K-line diagnostics (OBD pin 7)————————
47Check engine light (MIL)—W38—0.5G5VOODOOPROV-A-A28———
48EPC warning light—W39—0.5G5VOODOOPROV-A-A27———
5Wideband lambda heater (Z19)—W33—0.5G5VOODOOPROV-E-E15———
51Wideband lambda pump (G39)—W42—0.5G5VOODOOPROV-E-E17———
52Wideband lambda pump (G39)—W43—0.5G5VOODOOPROV-E-E24———
53MAF sensor signal (G70)—W24—0.5G5VOODOOPROV-A-A17———
54Road speed signal (VSS)—W49—0.5G5VOODOOPROV-A-A30———
58CAN bus low————————
60CAN bus high————————
62Battery constant +12V (term 30)————————
63Post-cat lambda heater (Z29)—W34—0.5G5VOODOOPROV-E-E22———
64EVAP canister valve (N80)—W40—0.5G5VOODOOPROV-A-A26———
65Fuel pump relay control—W31—0.5G5VOODOOPROV-A-A21———
66Secondary-air pump relay (J299)—W32—0.5G5VOODOOPROV-A-A20———
68Post-cat lambda signal (G130)—W46—0.5G5VOODOOPROV-B-B16———
69Post-cat lambda signal (G130)—W47—0.5G5VOODOOPROV-B-B23———
70Wideband lambda Nernst signal (G39)—W44—0.5G5VOODOOPROV-E-E19———
71Wideband lambda Nernst signal (G39)—W45—0.5G5VOODOOPROV-E-E26———
72Accelerator pedal position 1 5V supply (G79)—W3—0.5SP-5V1-1———
73Accelerator pedal position 2 5V supply (G185)—W4—0.5SP-5V1-1———
82Crank position sensor (G28)—W9—0.5G5VOODOOPROV-A-A8———
83Throttle position sensor 5V supply (G187/G188)—W5—0.5SP-5V1-1———
84Throttle position sensor 1 (G187)—W27—0.5G5VOODOOPROV-A-A14———
85Intake air temperature (G42)—W48—0.5G5VOODOOPROV-A-A16———
86Camshaft position sensor (G40)—W10—0.5G5VOODOOPROV-A-A9———
88Injector 4 (N33)—W20—0.5G5VOODOOPROV-A-A1———
89Injector 2 (N31)—W18—0.5G5VOODOOPROV-A-A3———
9Secondary-air injection valve (N112)—W41—0.5G5VOODOOPROV-B-B4———
90Crank position sensor ground (G28)————————
91Throttle position sensor ground (G187/G188)————————
92Throttle position sensor 2 (G188)—W29—0.5G5VOODOOPROV-B-B15———
93Engine coolant temperature (G62)—W30—0.5G5VOODOOPROV-A-A15———
94Ignition coil 4 (N163)—W16—0.5G5VOODOOPROV-A-A10———
95Ignition coil 2 (N128)—W14—0.5G5VOODOOPROV-A-A12———
96Injector 1 (N30)—W17—0.5G5VOODOOPROV-A-A4———
97Injector 3 (N32)—W19—0.5G5VOODOOPROV-A-A2———
98Cam + boost sensor 5V supply (G40/G31)—W6—0.5SP-5V1-1———
99Knock sensor 5V supply (G61/G66)—W7—0.5SP-5V1-1———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W3—0.5OEM-T121-72———
1——W4—0.5OEM-T121-73———
1——W5—0.5OEM-T121-83———
1——W6—0.5OEM-T121-98———
1——W7—0.5OEM-T121-99———
1——W8—0.5G5VOODOOPROV-A-A32———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-T121-1———
1——W2—0.85OEM-T121-2———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-T121-1ECU groundground———corroborated
OEM-T121-101Boost pressure sensor (G31)analog_inG5VOODOOPROV-A-A22Analogue Volt 2analog_incorroborated
OEM-T121-102Ignition coil 1 (N127)ignition_outG5VOODOOPROV-A-A13Ignition 1ignition_outcorroborated
OEM-T121-103Ignition coil 3 (N158)ignition_outG5VOODOOPROV-A-A11Ignition 3ignition_outcorroborated
OEM-T121-104Boost control solenoid (N75)low_side_outG5VOODOOPROV-A-A19Aux 3low_side_outcorroborated
OEM-T121-105Diverter valve (N249)low_side_outG5VOODOOPROV-A-A18Aux 4low_side_outcorroborated
OEM-T121-106Knock sensor 1 (G61)knock_inG5VOODOOPROV-B-B9Knock 1knock_incorroborated
OEM-T121-107Knock sensor 2 (G66)knock_inG5VOODOOPROV-B-B8Knock 2knock_incorroborated
OEM-T121-108Sensor groundsensor_ground———corroborated
OEM-T121-115VVT camshaft adjustment valve (N205)low_side_outG5VOODOOPROV-A-A29Aux 5switch_outcorroborated
OEM-T121-117Throttle motor G186 (+)hbridge_outG5VOODOOPROV-B-B18Aux 9hbridge_outcorroborated
OEM-T121-118Throttle motor G186 (−)hbridge_outG5VOODOOPROV-B-B26Aux 10hbridge_outcorroborated
OEM-T121-121ECM + coil power (J271 relay feed)power_in———corroborated
OEM-T121-2ECU groundground———corroborated
OEM-T121-21ECM power (J271 relay feed)power_in———corroborated
OEM-T121-27MAF sensor supply (G70)power_in———corroborated
OEM-T121-29MAF sensor ground (G70)sensor_ground———corroborated
OEM-T121-3Ignition switch +12V (term 15)digital_inG5VOODOOPROV-A-A6Ignition Switchdigital_incorroborated
OEM-T121-33Accelerator pedal position 1 (G79)analog_inG5VOODOOPROV-A-A33Analogue Volt 3analog_incorroborated
OEM-T121-34Accelerator pedal position 1 ground (G79)sensor_ground———corroborated
OEM-T121-35Accelerator pedal position 2 (G185)analog_inG5VOODOOPROV-B-B33Analogue Volt 5analog_incorroborated
OEM-T121-36Accelerator pedal position 2 ground (G185)sensor_ground———corroborated
OEM-T121-37Engine speed signal (tacho to cluster)tacho_out———corroborated
OEM-T121-43K-line diagnostics (OBD pin 7)serial———corroborated
OEM-T121-47Check engine light (MIL)low_side_outG5VOODOOPROV-A-A28Aux 6switch_outcorroborated
OEM-T121-48EPC warning lightlow_side_outG5VOODOOPROV-A-A27Aux 7switch_outcorroborated
OEM-T121-5Wideband lambda heater (Z19)low_side_outG5VOODOOPROV-E-E15Aux 13 / WB Heater 1low_side_outcorroborated
OEM-T121-51Wideband lambda pump (G39)wb_ipG5VOODOOPROV-E-E17IPE 1wb_ipcorroborated
OEM-T121-52Wideband lambda pump (G39)wb_ipG5VOODOOPROV-E-E24IPE 2wb_ipcorroborated
OEM-T121-53MAF sensor signal (G70)analog_inG5VOODOOPROV-A-A17Analogue Volt 1analog_incorroborated
OEM-T121-54Road speed signal (VSS)digital_inG5VOODOOPROV-A-A30Digital Input 1digital_incorroborated
OEM-T121-58CAN bus lowcan_l———corroborated
OEM-T121-60CAN bus highcan_h———corroborated
OEM-T121-62Battery constant +12V (term 30)power_in———corroborated
OEM-T121-63Post-cat lambda heater (Z29)low_side_outG5VOODOOPROV-E-E22Aux 14 / WB Heater 2low_side_outcorroborated
OEM-T121-64EVAP canister valve (N80)low_side_outG5VOODOOPROV-A-A26Aux 8switch_outcorroborated
OEM-T121-65Fuel pump relay controllow_side_outG5VOODOOPROV-A-A21Aux 1low_side_outcorroborated
OEM-T121-66Secondary-air pump relay (J299)low_side_outG5VOODOOPROV-A-A20Aux 2low_side_outcorroborated
OEM-T121-68Post-cat lambda signal (G130)lambda_nb_inG5VOODOOPROV-B-B16Analogue Volt 7analog_incorroborated
OEM-T121-69Post-cat lambda signal (G130)lambda_nb_inG5VOODOOPROV-B-B23Analogue Volt 8analog_incorroborated
OEM-T121-70Wideband lambda Nernst signal (G39)wb_vsG5VOODOOPROV-E-E19MES 1wb_vscorroborated
OEM-T121-71Wideband lambda Nernst signal (G39)wb_vsG5VOODOOPROV-E-E26MES 2wb_vscorroborated
OEM-T121-72Accelerator pedal position 1 5V supply (G79)vrefG5VOODOOPROV-A-A32+5V Outvrefcorroborated
OEM-T121-73Accelerator pedal position 2 5V supply (G185)vrefG5VOODOOPROV-A-A32+5V Outvrefcorroborated
OEM-T121-82Crank position sensor (G28)trigger_inG5VOODOOPROV-A-A8Trigger 1trigger_incorroborated
OEM-T121-83Throttle position sensor 5V supply (G187/G188)vrefG5VOODOOPROV-A-A32+5V Outvrefcorroborated
OEM-T121-84Throttle position sensor 1 (G187)analog_inG5VOODOOPROV-A-A14Analogue Volt 4analog_incorroborated
OEM-T121-85Intake air temperature (G42)temp_inG5VOODOOPROV-A-A16Analogue Temp 2temp_incorroborated
OEM-T121-86Camshaft position sensor (G40)trigger_inG5VOODOOPROV-A-A9Trigger 2trigger_incorroborated
OEM-T121-88Injector 4 (N33)injector_outG5VOODOOPROV-A-A1Injection 4injector_outcorroborated
OEM-T121-89Injector 2 (N31)injector_outG5VOODOOPROV-A-A3Injection 2injector_outcorroborated
OEM-T121-9Secondary-air injection valve (N112)low_side_outG5VOODOOPROV-B-B4Injection 5injector_outcorroborated
OEM-T121-90Crank position sensor ground (G28)sensor_ground———corroborated
OEM-T121-91Throttle position sensor ground (G187/G188)sensor_ground———corroborated
OEM-T121-92Throttle position sensor 2 (G188)analog_inG5VOODOOPROV-B-B15Analogue Volt 6analog_incorroborated
OEM-T121-93Engine coolant temperature (G62)temp_inG5VOODOOPROV-A-A15Analogue Temp 1temp_incorroborated
OEM-T121-94Ignition coil 4 (N163)ignition_outG5VOODOOPROV-A-A10Ignition 4ignition_outcorroborated
OEM-T121-95Ignition coil 2 (N128)ignition_outG5VOODOOPROV-A-A12Ignition 2ignition_outcorroborated
OEM-T121-96Injector 1 (N30)injector_outG5VOODOOPROV-A-A4Injection 1injector_outcorroborated
OEM-T121-97Injector 3 (N32)injector_outG5VOODOOPROV-A-A2Injection 3injector_outcorroborated
OEM-T121-98Cam + boost sensor 5V supply (G40/G31)vrefG5VOODOOPROV-A-A32+5V Outvrefcorroborated
OEM-T121-99Knock sensor 5V supply (G61/G66)vrefG5VOODOOPROV-A-A32+5V Outvrefcorroborated

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-T121-1SP-GND-10.85no routeECU ground—
W2OEM-T121-2SP-GND-10.85no routeECU ground—
W3OEM-T121-72SP-5V1-10.5no routeAccelerator pedal position 1 5V supply (G79)—
W4OEM-T121-73SP-5V1-10.5no routeAccelerator pedal position 2 5V supply (G185)—
W5OEM-T121-83SP-5V1-10.5no routeThrottle position sensor 5V supply (G187/G188)—
W6OEM-T121-98SP-5V1-10.5no routeCam + boost sensor 5V supply (G40/G31)—
W7OEM-T121-99SP-5V1-10.5no routeKnock sensor 5V supply (G61/G66)—
W8SP-5V1-1G5VOODOOPROV-A-A320.5no route+5V Out—
W9OEM-T121-82G5VOODOOPROV-A-A80.5no routeCrank position sensor (G28)—
W10OEM-T121-86G5VOODOOPROV-A-A90.5no routeCamshaft position sensor (G40)—
W11OEM-T121-106G5VOODOOPROV-B-B90.5no routeKnock sensor 1 (G61)—
W12OEM-T121-107G5VOODOOPROV-B-B80.5no routeKnock sensor 2 (G66)—
W13OEM-T121-102G5VOODOOPROV-A-A130.5no routeIgnition coil 1 (N127)—
W14OEM-T121-95G5VOODOOPROV-A-A120.5no routeIgnition coil 2 (N128)—
W15OEM-T121-103G5VOODOOPROV-A-A110.5no routeIgnition coil 3 (N158)—
W16OEM-T121-94G5VOODOOPROV-A-A100.5no routeIgnition coil 4 (N163)—
W17OEM-T121-96G5VOODOOPROV-A-A40.5no routeInjector 1 (N30)—
W18OEM-T121-89G5VOODOOPROV-A-A30.5no routeInjector 2 (N31)—
W19OEM-T121-97G5VOODOOPROV-A-A20.5no routeInjector 3 (N32)—
W20OEM-T121-88G5VOODOOPROV-A-A10.5no routeInjector 4 (N33)—
W21OEM-T121-118G5VOODOOPROV-B-B260.5no routeThrottle motor G186 (−)—
W22OEM-T121-117G5VOODOOPROV-B-B180.5no routeThrottle motor G186 (+)—
W23OEM-T121-3G5VOODOOPROV-A-A60.5no routeIgnition switch +12V (term 15)—
W24OEM-T121-53G5VOODOOPROV-A-A170.5no routeMAF sensor signal (G70)—
W25OEM-T121-101G5VOODOOPROV-A-A220.5no routeBoost pressure sensor (G31)—
W26OEM-T121-33G5VOODOOPROV-A-A330.5no routeAccelerator pedal position 1 (G79)—
W27OEM-T121-84G5VOODOOPROV-A-A140.5no routeThrottle position sensor 1 (G187)—
W28OEM-T121-35G5VOODOOPROV-B-B330.5no routeAccelerator pedal position 2 (G185)—
W29OEM-T121-92G5VOODOOPROV-B-B150.5no routeThrottle position sensor 2 (G188)—
W30OEM-T121-93G5VOODOOPROV-A-A150.5no routeEngine coolant temperature (G62)—
W31OEM-T121-65G5VOODOOPROV-A-A210.5no routeFuel pump relay control—
W32OEM-T121-66G5VOODOOPROV-A-A200.5no routeSecondary-air pump relay (J299)—
W33OEM-T121-5G5VOODOOPROV-E-E150.5no routeWideband lambda heater (Z19)—
W34OEM-T121-63G5VOODOOPROV-E-E220.5no routePost-cat lambda heater (Z29)—
W35OEM-T121-104G5VOODOOPROV-A-A190.5no routeBoost control solenoid (N75)—
W36OEM-T121-105G5VOODOOPROV-A-A180.5no routeDiverter valve (N249)—
W37OEM-T121-115G5VOODOOPROV-A-A290.5no routeVVT camshaft adjustment valve (N205)—
W38OEM-T121-47G5VOODOOPROV-A-A280.5no routeCheck engine light (MIL)—
W39OEM-T121-48G5VOODOOPROV-A-A270.5no routeEPC warning light—
W40OEM-T121-64G5VOODOOPROV-A-A260.5no routeEVAP canister valve (N80)—
W41OEM-T121-9G5VOODOOPROV-B-B40.5no routeSecondary-air injection valve (N112)—
W42OEM-T121-51G5VOODOOPROV-E-E170.5no routeWideband lambda pump (G39)—
W43OEM-T121-52G5VOODOOPROV-E-E240.5no routeWideband lambda pump (G39)—
W44OEM-T121-70G5VOODOOPROV-E-E190.5no routeWideband lambda Nernst signal (G39)—
W45OEM-T121-71G5VOODOOPROV-E-E260.5no routeWideband lambda Nernst signal (G39)—
W46OEM-T121-68G5VOODOOPROV-B-B160.5no routePost-cat lambda signal (G130)—
W47OEM-T121-69G5VOODOOPROV-B-B230.5no routePost-cat lambda signal (G130)—
W48OEM-T121-85G5VOODOOPROV-A-A160.5no routeIntake air temperature (G42)—
W49OEM-T121-54G5VOODOOPROV-A-A300.5no routeRoad speed signal (VSS)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (20)

SeverityCodeSubjectMessage
errorREQUIRED_UNMAPPEDOEM-T121-1Required OEM function "ECU ground" (ground) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-108Required OEM function "Sensor ground" (sensor_ground) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-121Required OEM function "ECM + coil power (J271 relay feed)" (power_in) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-2Required OEM function "ECU ground" (ground) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-21Required OEM function "ECM power (J271 relay feed)" (power_in) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-34Required OEM function "Accelerator pedal position 1 ground (G79)" (sensor_ground) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-36Required OEM function "Accelerator pedal position 2 ground (G185)" (sensor_ground) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-T121-91Required OEM function "Throttle position sensor ground (G187/G188)" (sensor_ground) is not connected to the new ECU.
warnDBW_MOTOR_CURRENTG5VOODOOPROV-B-B18Cannot confirm G5 Voodoo Pro V1 can drive the throttle motor: neither the motor stall current (OEM-T121-117) nor the peak rating of G5VOODOOPROV-B-B18 "Aux 9" is known.
warnDBW_MOTOR_CURRENTG5VOODOOPROV-B-B26Cannot confirm G5 Voodoo Pro V1 can drive the throttle motor: neither the motor stall current (OEM-T121-118) nor the peak rating of G5VOODOOPROV-B-B26 "Aux 10" is known.
warnDBW_SHARED_5VG5VOODOOPROV-A-A32 + OEM-T121-72 + OEM-T121-73 + OEM-T121-83 + OEM-T121-98 + OEM-T121-99 + SP-5V1-1These 5 V supplies are separate in the stock car (OEM-T121-72 [pedal1], OEM-T121-73 [pedal2], OEM-T121-83 [tps], OEM-T121-98 [cam_boost], OEM-T121-99 [knock]) and here share one ECU 5 V (G5VOODOOPROV-A-A32). On a drive-by-wire car the OEM splits them so one short or fault can't corrupt both throttle/pedal tracks at once. G5 Voodoo Pro V1 has 1 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.
warnLOAD_UNKNOWNG5VOODOOPROV-A-A20G5VOODOOPROV-A-A20 "Aux 2" drives OEM-T121-66 Secondary-air pump relay (J299) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNG5VOODOOPROV-A-A21G5VOODOOPROV-A-A21 "Aux 1" drives OEM-T121-65 Fuel pump relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnSUPPLY_GROUPG5VOODOOPROV-A-A32 + OEM-T121-72 + OEM-T121-73 + OEM-T121-83 + OEM-T121-98 + OEM-T121-99 + SP-5V1-1Supplies meant to stay independent share one net: OEM-T121-72 [pedal1], OEM-T121-73 [pedal2], OEM-T121-83 [tps], OEM-T121-98 [cam_boost], 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.
infoNET_FAMILYOEM-T121-115 ↔ G5VOODOOPROV-A-A29OEM-T121-115 "VVT camshaft adjustment valve (N205)" [low_side_out] is wired to G5VOODOOPROV-A-A29 "Aux 5" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-T121-47 ↔ G5VOODOOPROV-A-A28OEM-T121-47 "Check engine light (MIL)" [low_side_out] is wired to G5VOODOOPROV-A-A28 "Aux 6" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-T121-48 ↔ G5VOODOOPROV-A-A27OEM-T121-48 "EPC warning light" [low_side_out] is wired to G5VOODOOPROV-A-A27 "Aux 7" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-T121-64 ↔ G5VOODOOPROV-A-A26OEM-T121-64 "EVAP canister valve (N80)" [low_side_out] is wired to G5VOODOOPROV-A-A26 "Aux 8" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-T121-9 ↔ G5VOODOOPROV-B-B4OEM-T121-9 "Secondary-air injection valve (N112)" [low_side_out] is wired to G5VOODOOPROV-B-B4 "Injection 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoUNMAPPEDOEM7 optional OEM pins are not mapped: OEM-T121-27 MAF sensor supply (G70); OEM-T121-29 MAF sensor ground (G70); OEM-T121-37 Engine speed signal (tacho to cluster); OEM-T121-43 K-line diagnostics (OBD pin 7); OEM-T121-58 CAN bus low; OEM-T121-60 CAN bus high; OEM-T121-90 Crank position sensor ground (G28)

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-T121-62Battery-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. Open items: - Main-relay feed: no ecu_main_power pin on the stock or the new ECU - Link G5 Voodoo Pro V1: no power-ground pins in the library - Link G5 Voodoo Pro V1: no sensor-ground pin in the library - OEM-T121 34: Accelerator pedal position 1 ground (G79): no rule for class ground_sensor; wire by hand - OEM-T121 36: Accelerator pedal position 2 ground (G185): no rule for class ground_sensor; wire by hand - OEM-T121 108: Sensor ground: no rule for class ground_sensor; wire by hand - OEM-T121 121: ECM + coil power (J271 relay feed): no rule for class ecu_main_power; wire by hand - OEM-T121 21: ECM power (J271 relay feed): no rule for class ecu_main_power; wire by hand - OEM-T121 91: Throttle position sensor ground (G187/G188): no rule for class ground_sensor; wire by hand Not wired: - OEM-T121 62: Battery constant +12V (term 30): Link G5 Voodoo Pro V1 has no battery-constant input; not needed - OEM-T121 37: Engine speed signal (tacho to cluster): no free tacho/frequency_out/low_side/ls_hs on Link G5 Voodoo Pro V1 - OEM-T121 60: CAN bus high: no free can_h on Link G5 Voodoo Pro V1 - OEM-T121 58: CAN bus low: no free can_l on Link G5 Voodoo Pro V1 - OEM-T121 43: K-line diagnostics (OBD pin 7): no free k_line on Link G5 Voodoo Pro V1 - OEM-T121 27: MAF sensor supply (G70): no rule for class sensor_supply_in; wire by hand - OEM-T121 29: MAF sensor ground (G70): no rule for class ground_sensor; wire by hand - OEM-T121 90: Crank position sensor ground (G28): no rule for class ground_sensor; wire by hand

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docLink G5 Voodoo Pro V1 Installer I/O Tablehttps://kb.linkecu.com/__attachments/a_5cf0fc044bcfb915ac75562b29399beb93e47860e38990b3c01614530f927686/G5%20Voodoo%20Pro%20V1%20Installer%20IO%20Table.pdf———
3community_copyNefMoto: ME7.5 ECU bench-flashing power/ground pinshttp://nefmoto.com/wiki/index.php?title=ECU_Bench_Flashing———
3community_copyvwressources: Bosch Motronic ME7.5 (AMK/ARY/AUQ/ARX/AUM) T121 pinouthttps://www.vwressources.planethoster.world/me75_pinout.html———