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BMW 3 Series E46 M3 2001–2006 (S54) → DTAFast T12 (auto)

BMW 3 Series E46 M3 2001–2006 (S54) — DTAFast — T12
⚠ 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 errors3: read the Findings page before cutting any wire
Size of the job66 wires · 12 connectors · 3 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Terminals3-1447221-4
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-X60001-2SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-X60001-8SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-X60003-4SP-14V-10.85☐☐☐☐☐☐☐
W4OEM-X60003-5SP-14V-10.85☐☐☐☐☐☐☐
W5SP-14V-1T12-C1-310.85☐☐☐☐☐☐☐
W6OEM-X60001-7T12-C3-260.85☐☐☐☐☐☐☐
W7OEM-X60001-4SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-X60001-5SP-GND-10.85☐☐☐☐☐☐☐
W9OEM-X60001-6SP-GND-10.85☐☐☐☐☐☐☐
W10OEM-X60001-9SP-GND-10.85☐☐☐☐☐☐☐
W11OEM-X60005-5SP-GND-10.85☐☐☐☐☐☐☐
W12SP-GND-1T12-C1-130.85☐☐☐☐☐☐☐
W13SP-GND-1T12-C1-140.85☐☐☐☐☐☐☐
W14OEM-X60003-15SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-X60003-35SP-0V-10.5☐☐☐☐☐☐☐
W16OEM-X60003-36SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-X60003-37SP-0V-10.5☐☐☐☐☐☐☐
W18OEM-X60003-45SP-0V-10.5☐☐☐☐☐☐☐
W19OEM-X60003-49SP-0V-10.5☐☐☐☐☐☐☐
W20OEM-X60004-12SP-0V-10.5☐☐☐☐☐☐☐
W21OEM-X60004-7SP-0V-10.5☐☐☐☐☐☐☐
W22SP-0V-1T12-C2-210.5☐☐☐☐☐☐☐
W23SP-0V-1T12-C2-330.5☐☐☐☐☐☐☐
W24OEM-X60004-14SP-5V1-10.5☐☐☐☐☐☐☐
W25OEM-X60004-9SP-5V1-10.5☐☐☐☐☐☐☐
W26SP-5V1-1T12-C2-240.5☐☐☐☐☐☐☐
W27OEM-X60003-3T12-C2-120.5☐☐☐☐☐☐☐
W28OEM-X60003-30T12-C2-220.5☐☐☐☐☐☐☐
W29OEM-X60003-29T12-C2-290.5☐☐☐☐☐☐☐
W30OEM-X60003-33T12-C3-310.5☐☐☐☐☐☐☐
W31OEM-X60003-34T12-C3-320.5☐☐☐☐☐☐☐
W32OEM-X60005-6T12-C1-100.5☐☐☐☐☐☐☐
W33OEM-X60005-7T12-C1-180.5☐☐☐☐☐☐☐
W34OEM-X60005-4T12-C1-10.5☐☐☐☐☐☐☐
W35OEM-X60005-8T12-C1-260.5☐☐☐☐☐☐☐
W36OEM-X60005-1T12-C1-110.5☐☐☐☐☐☐☐
W37OEM-X60005-9T12-C1-270.5☐☐☐☐☐☐☐
W38OEM-X60003-13T12-C1-90.5☐☐☐☐☐☐☐
W39OEM-X60003-6T12-C1-170.5☐☐☐☐☐☐☐
W40OEM-X60003-26T12-C1-340.5☐☐☐☐☐☐☐
W41OEM-X60003-7T12-C1-250.5☐☐☐☐☐☐☐
W42OEM-X60003-11T12-C1-160.5☐☐☐☐☐☐☐
W43OEM-X60003-8T12-C1-150.5☐☐☐☐☐☐☐
W44OEM-X60003-1T12-C2-100.5☐☐☐☐☐☐☐
W45OEM-X60003-32T12-C2-10.5☐☐☐☐☐☐☐
W46OEM-X60004-8T12-C2-50.5☐☐☐☐☐☐☐
W47OEM-X60003-31T12-C2-60.5☐☐☐☐☐☐☐
W48OEM-X60004-13T12-C2-180.5☐☐☐☐☐☐☐
W49OEM-X60003-28T12-C2-70.5☐☐☐☐☐☐☐
W50OEM-X60001-1T12-C1-50.5☐☐☐☐☐☐☐
W51OEM-X60002-23T12-C1-40.5☐☐☐☐☐☐☐
W52OEM-X60004-10T12-C1-30.5☐☐☐☐☐☐☐
W53OEM-X60002-1T12-C3-90.5☐☐☐☐☐☐☐
W54OEM-X60002-12T12-C3-30.5☐☐☐☐☐☐☐
W55OEM-X60002-2T12-C3-220.5☐☐☐☐☐☐☐
W56OEM-X60002-6T12-C3-230.5☐☐☐☐☐☐☐
W57OEM-X60003-10T12-C3-240.5☐☐☐☐☐☐☐
W58OEM-X60003-12T12-C3-250.5☐☐☐☐☐☐☐
W59OEM-X60003-21T12-C3-100.5☐☐☐☐☐☐☐
W60OEM-X60003-9T12-C3-40.5☐☐☐☐☐☐☐
W61OEM-X60002-14T12-C2-190.5☐☐☐☐☐☐☐
W62OEM-X60002-16T12-C3-170.5☐☐☐☐☐☐☐
W63OEM-X60003-27T12-C2-250.5☐☐☐☐☐☐☐
W64OEM-X60003-44T12-C2-170.5☐☐☐☐☐☐☐
W65OEM-X60003-16T12-C2-40.5☐☐☐☐☐☐☐
W66OEM-X60003-50T12-C2-80.5☐☐☐☐☐☐☐

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
1T12-C1-31T12-C1-13open (OL)+12 V supply must not touch power ground
2T12-C1-31T12-C2-21open (OL)+12 V supply must not touch sensor ground
3T12-C3-26T12-C2-21open (OL)+12 V supply must not touch sensor ground
4T12-C1-13T12-C2-24open (OL)power ground must not touch 5 V sensor reference
5T12-C1-13T12-C3-26open (OL)power ground must not touch +12 V supply
6T12-C1-31T12-C2-24open (OL)+12 V supply must not touch 5 V sensor reference
7T12-C2-21T12-C2-24open (OL)sensor ground must not touch 5 V sensor reference
8T12-C3-26T12-C2-24open (OL)+12 V supply 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

OEM-X60001OEM-X60002OEM-X60003OEM-X60004OEM-X60005SP-0VSP-14VSP-5V1SP-GNDT12-C1T12-C2T12-C3

Connectors

OEM-X60001

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector relay control—W50—0.5T12-C1-5———
2DBW output-stage supply (P_DKSM+)—W1—0.85SP-14V-1———
4Power ground—W7—0.85SP-GND-1———
5Power ground—W8—0.85SP-GND-1———
6Power ground—W9—0.85SP-GND-1———
7Battery constant (terminal 30)—W6—0.85T12-C3-26———
8ECU main power (terminal 87 via main relay)—W2—0.85SP-14V-1———
9DBW output-stage return (P_DKSM-)—W10—0.85SP-GND-1———

OEM-X60002

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1O2 sensor heater, front 1 (pre-cat)—W53—0.5T12-C3-9———
12O2 sensor heater, rear 2 (post-cat)—W54—0.5T12-C3-3———
14O2 sensor signal, rear 2 (post-cat)—W61—0.5T12-C2-19———
16O2 sensor signal, rear 1 (post-cat)—W62—0.5T12-C3-17———
2O2 sensor heater, front 2 (pre-cat)—W55—0.5T12-C3-22———
23Main relay control—W51—0.5T12-C1-4———
6O2 sensor heater, rear 1 (post-cat)—W56—0.5T12-C3-23———

OEM-X60003

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Mass air flow (MAF) signal—W44—0.5T12-C2-10———
10VANOS intake solenoid—W57—0.5T12-C3-24———
11Injector cylinder 5—W42—0.5T12-C1-16———
12Map-controlled thermostat—W58—0.5T12-C3-25———
13Injector cylinder 1—W38—0.5T12-C1-9———
15Throttle ground—W14—0.5SP-0V-1———
16Oil pressure switch—W65—0.5T12-C2-4———
21Evap purge valve—W59—0.5T12-C3-10———
22Idle speed control, close————————
23Idle speed control, open————————
26Injector cylinder 3—W40—0.5T12-C1-34———
27Intake air temperature (IAT)—W63—0.5T12-C2-25———
28Engine coolant temperature (ECT)—W49—0.5T12-C2-7———
29Intake camshaft position—W29—0.5T12-C2-29———
3Crankshaft position—W27—0.5T12-C2-12———
30Exhaust camshaft position—W28—0.5T12-C2-22———
31Throttle position sensor 2—W47—0.5T12-C2-6———
32Throttle position sensor 1—W45—0.5T12-C2-1———
33Knock sensor 1—W30—0.5T12-C3-31———
34Knock sensor 2—W31—0.5T12-C3-32———
35ECT ground—W15—0.5SP-0V-1———
36Intake camshaft ground—W16—0.5SP-0V-1———
37Crankshaft ground—W17—0.5SP-0V-1———
4MAF supply—W3—0.85SP-14V-1———
42Throttle motor drive 1 (H-bridge)————————
43Throttle motor drive 2 (H-bridge)————————
44Engine oil temperature—W64—0.5T12-C2-17———
45Oil temperature ground—W18—0.5SP-0V-1———
46Knock sensor 3————————
47Knock sensor 4————————
49Exhaust camshaft ground—W19—0.5SP-0V-1———
5Throttle (EDK/ITB) supply—W4—0.85SP-14V-1———
50Oil level switch—W66—0.5T12-C2-8———
6Injector cylinder 2—W39—0.5T12-C1-17———
7Injector cylinder 4—W41—0.5T12-C1-25———
8Injector cylinder 6—W43—0.5T12-C1-15———
9VANOS exhaust solenoid—W60—0.5T12-C3-4———

OEM-X60004

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Fuel pump relay control—W52—0.5T12-C1-3———
12Pedal ground 2—W20—0.5SP-0V-1———
13Pedal position signal 2—W48—0.5T12-C2-18———
14Pedal +5V supply 2—W24—0.5SP-5V1-1———
7Pedal ground 1—W21—0.5SP-0V-1———
8Pedal position signal 1—W46—0.5T12-C2-5———
9Pedal +5V supply 1—W25—0.5SP-5V1-1———

OEM-X60005

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil 5—W36—0.5T12-C1-11———
4Ignition coil 3—W34—0.5T12-C1-1———
5Ignition ground—W11—0.85SP-GND-1———
6Ignition coil 1—W32—0.5T12-C1-10———
7Ignition coil 2—W33—0.5T12-C1-18———
8Ignition coil 4—W35—0.5T12-C1-26———
9Ignition coil 6—W37—0.5T12-C1-27———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W14—0.5OEM-X60003-15———
1——W15—0.5OEM-X60003-35———
1——W16—0.5OEM-X60003-36———
1——W17—0.5OEM-X60003-37———
1——W18—0.5OEM-X60003-45———
1——W19—0.5OEM-X60003-49———
1——W20—0.5OEM-X60004-12———
1——W21—0.5OEM-X60004-7———
1——W22—0.5T12-C2-21———
1——W23—0.5T12-C2-33———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W2—0.85OEM-X60001-8———
1——W1—0.85OEM-X60001-2———
1——W3—0.85OEM-X60003-4———
1——W4—0.85OEM-X60003-5———
1——W5—0.85T12-C1-31———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W24—0.5OEM-X60004-14———
1——W25—0.5OEM-X60004-9———
1——W26—0.5T12-C2-24———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W8—0.85OEM-X60001-5———
1——W7—0.85OEM-X60001-4———
1——W9—0.85OEM-X60001-6———
1——W10—0.85OEM-X60001-9———
1——W11—0.85OEM-X60005-5———
1——W12—0.85T12-C1-13———
1——W13—0.85T12-C1-14———

T12-C1

Mating face
T12-C1-1 · Coil 31T12-C1-2 · Coil 112T12-C1-3 · PWM 33T12-C1-4 · PWM 24T12-C1-5 · PWM 15T12-C1-6 · Motor 1 +6T12-C1-7 · Motor 1 -7T12-C1-8 · Injector 118T12-C1-9 · Injector 19T12-C1-10 · Coil 110T12-C1-11 · Coil 511T12-C1-12 · Coil 712T12-C1-13 · Power Ground 113T12-C1-14 · Power Ground 214T12-C1-15 · Injector 615T12-C1-16 · Injector 516T12-C1-17 · Injector 217T12-C1-18 · Coil 218T12-C1-19 · Coil 819T12-C1-20 · Coil 920T12-C1-21 · Injector 921T12-C1-22 · Injector 1022T12-C1-23 · Injector 823T12-C1-24 · Injector 724T12-C1-25 · Injector 425T12-C1-26 · Coil 426T12-C1-27 · Coil 627T12-C1-28 · Coil 1028T12-C1-29 · Motor 2 +29T12-C1-30 · Motor 2 -30T12-C1-31 · Ignition 12v In31T12-C1-32 · Injector 1232T12-C1-33 · Coil 1233T12-C1-34 · Injector 334
Wire side
T12-C1-1 · Coil 31T12-C1-2 · Coil 112T12-C1-3 · PWM 33T12-C1-4 · PWM 24T12-C1-5 · PWM 15T12-C1-6 · Motor 1 +6T12-C1-7 · Motor 1 -7T12-C1-8 · Injector 118T12-C1-9 · Injector 19T12-C1-10 · Coil 110T12-C1-11 · Coil 511T12-C1-12 · Coil 712T12-C1-13 · Power Ground 113T12-C1-14 · Power Ground 214T12-C1-15 · Injector 615T12-C1-16 · Injector 516T12-C1-17 · Injector 217T12-C1-18 · Coil 218T12-C1-19 · Coil 819T12-C1-20 · Coil 920T12-C1-21 · Injector 921T12-C1-22 · Injector 1022T12-C1-23 · Injector 823T12-C1-24 · Injector 724T12-C1-25 · Injector 425T12-C1-26 · Coil 426T12-C1-27 · Coil 627T12-C1-28 · Coil 1028T12-C1-29 · Motor 2 +29T12-C1-30 · Motor 2 -30T12-C1-31 · Ignition 12v In31T12-C1-32 · Injector 1232T12-C1-33 · Coil 1233T12-C1-34 · Injector 334
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Coil 3—W34—0.5OEM-X60005-4———
2Coil 11————————
3PWM 3—W52—0.5OEM-X60004-10———
4PWM 2—W51—0.5OEM-X60002-23———
5PWM 1—W50—0.5OEM-X60001-1———
6Motor 1 +————————
7Motor 1 -————————
8Injector 11————————
9Injector 1—W38—0.5OEM-X60003-13———
10Coil 1—W32—0.5OEM-X60005-6———
11Coil 5—W36—0.5OEM-X60005-1———
12Coil 7————————
13Power Ground 1—W12—0.85SP-GND-1———
14Power Ground 2—W13—0.85SP-GND-1———
15Injector 6—W43—0.5OEM-X60003-8———
16Injector 5—W42—0.5OEM-X60003-11———
17Injector 2—W39—0.5OEM-X60003-6———
18Coil 2—W33—0.5OEM-X60005-7———
19Coil 8————————
20Coil 9————————
21Injector 9————————
22Injector 10————————
23Injector 8————————
24Injector 7————————
25Injector 4—W41—0.5OEM-X60003-7———
26Coil 4—W35—0.5OEM-X60005-8———
27Coil 6—W37—0.5OEM-X60005-9———
28Coil 10————————
29Motor 2 +————————
30Motor 2 -————————
31Ignition 12v In—W5—0.85SP-14V-1———
32Injector 12————————
33Coil 12————————
34Injector 3—W40—0.5OEM-X60003-26———

T12-C2

Mating face
T12-C2-1 · Analogue 21T12-C2-2 · Wheel 12T12-C2-3 · Analogue 103T12-C2-4 · Digital 14T12-C2-5 · Analogue 35T12-C2-6 · Analogue 46T12-C2-7 · Thermistor 17T12-C2-8 · Digital 28T12-C2-9 · 5v Output9T12-C2-10 · Analogue 110T12-C2-11 · Digital 311T12-C2-12 · Crank12T12-C2-13 · Analogue 1213T12-C2-14 · Digital 414T12-C2-15 · Digital 515T12-C2-16 · Analogue 1116T12-C2-17 · Thermistor 317T12-C2-18 · Analogue 518T12-C2-19 · Analogue 619T12-C2-20 · Wheel 220T12-C2-21 · Sensor Ground21T12-C2-22 · Cam 122T12-C2-23 · Cam 323T12-C2-24 · 5v Output24T12-C2-25 · Thermistor 225T12-C2-26 · CAN High26T12-C2-27 · Digital 627T12-C2-28 · CAN Low28T12-C2-29 · Cam 229T12-C2-30 · Cam 430T12-C2-31 · Wheel 331T12-C2-32 · Wheel 432T12-C2-33 · Sensor Ground33T12-C2-34 · Analogue 934
Wire side
T12-C2-1 · Analogue 21T12-C2-2 · Wheel 12T12-C2-3 · Analogue 103T12-C2-4 · Digital 14T12-C2-5 · Analogue 35T12-C2-6 · Analogue 46T12-C2-7 · Thermistor 17T12-C2-8 · Digital 28T12-C2-9 · 5v Output9T12-C2-10 · Analogue 110T12-C2-11 · Digital 311T12-C2-12 · Crank12T12-C2-13 · Analogue 1213T12-C2-14 · Digital 414T12-C2-15 · Digital 515T12-C2-16 · Analogue 1116T12-C2-17 · Thermistor 317T12-C2-18 · Analogue 518T12-C2-19 · Analogue 619T12-C2-20 · Wheel 220T12-C2-21 · Sensor Ground21T12-C2-22 · Cam 122T12-C2-23 · Cam 323T12-C2-24 · 5v Output24T12-C2-25 · Thermistor 225T12-C2-26 · CAN High26T12-C2-27 · Digital 627T12-C2-28 · CAN Low28T12-C2-29 · Cam 229T12-C2-30 · Cam 430T12-C2-31 · Wheel 331T12-C2-32 · Wheel 432T12-C2-33 · Sensor Ground33T12-C2-34 · Analogue 934
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Analogue 2—W45—0.5OEM-X60003-32———
2Wheel 1————————
3Analogue 10————————
4Digital 1—W65—0.5OEM-X60003-16———
5Analogue 3—W46—0.5OEM-X60004-8———
6Analogue 4—W47—0.5OEM-X60003-31———
7Thermistor 1—W49—0.5OEM-X60003-28———
8Digital 2—W66—0.5OEM-X60003-50———
95v Output————————
10Analogue 1—W44—0.5OEM-X60003-1———
11Digital 3————————
12Crank—W27—0.5OEM-X60003-3———
13Analogue 12————————
14Digital 4————————
15Digital 5————————
16Analogue 11————————
17Thermistor 3—W64—0.5OEM-X60003-44———
18Analogue 5—W48—0.5OEM-X60004-13———
19Analogue 6—W61—0.5OEM-X60002-14———
20Wheel 2————————
21Sensor Ground—W22—0.5SP-0V-1———
22Cam 1—W28—0.5OEM-X60003-30———
23Cam 3————————
245v Output—W26—0.5SP-5V1-1———
25Thermistor 2—W63—0.5OEM-X60003-27———
26CAN High————————
27Digital 6————————
28CAN Low————————
29Cam 2—W29—0.5OEM-X60003-29———
30Cam 4————————
31Wheel 3————————
32Wheel 4————————
33Sensor Ground—W23—0.5SP-0V-1———
34Analogue 9————————

T12-C3

Mating face
T12-C3-1 · Lambda 2 Pump Current1T12-C3-2 · Lambda 2 VGND2T12-C3-3 · Lambda 2 Heater Negative3T12-C3-4 · PWM 94T12-C3-5 · Lambda 2 Trim Resistor5T12-C3-6 · Lambda 2 Nernst Voltage6T12-C3-7 · Lambda 1 Pump Current7T12-C3-8 · Lambda 1 VGND8T12-C3-9 · Lambda 1 Heater Negative9T12-C3-10 · PWM 810T12-C3-11 · Lambda 1 Trim Resistor11T12-C3-12 · Lambda 1 Nernst Voltage12T12-C3-13 · Analogue 1313T12-C3-14 · Analogue 1414T12-C3-15 · Analogue 1515T12-C3-16 · Analogue 1616T12-C3-17 · Analogue 717T12-C3-18 · Analogue 818T12-C3-19 · Digital 719T12-C3-20 · Digital 820T12-C3-21 · Digital 921T12-C3-22 · PWM 422T12-C3-23 · PWM 523T12-C3-24 · PWM 624T12-C3-25 · PWM 725T12-C3-26 · Permanent 12v26T12-C3-27 · Permanent 12v27T12-C3-28 · PWM 1028T12-C3-29 · PWM 1129T12-C3-30 · PWM 1230T12-C3-31 · Knock 131T12-C3-32 · Knock 232T12-C3-33 · CAN 2 High33T12-C3-34 · CAN 2 Low34
Wire side
T12-C3-1 · Lambda 2 Pump Current1T12-C3-2 · Lambda 2 VGND2T12-C3-3 · Lambda 2 Heater Negative3T12-C3-4 · PWM 94T12-C3-5 · Lambda 2 Trim Resistor5T12-C3-6 · Lambda 2 Nernst Voltage6T12-C3-7 · Lambda 1 Pump Current7T12-C3-8 · Lambda 1 VGND8T12-C3-9 · Lambda 1 Heater Negative9T12-C3-10 · PWM 810T12-C3-11 · Lambda 1 Trim Resistor11T12-C3-12 · Lambda 1 Nernst Voltage12T12-C3-13 · Analogue 1313T12-C3-14 · Analogue 1414T12-C3-15 · Analogue 1515T12-C3-16 · Analogue 1616T12-C3-17 · Analogue 717T12-C3-18 · Analogue 818T12-C3-19 · Digital 719T12-C3-20 · Digital 820T12-C3-21 · Digital 921T12-C3-22 · PWM 422T12-C3-23 · PWM 523T12-C3-24 · PWM 624T12-C3-25 · PWM 725T12-C3-26 · Permanent 12v26T12-C3-27 · Permanent 12v27T12-C3-28 · PWM 1028T12-C3-29 · PWM 1129T12-C3-30 · PWM 1230T12-C3-31 · Knock 131T12-C3-32 · Knock 232T12-C3-33 · CAN 2 High33T12-C3-34 · CAN 2 Low34
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Lambda 2 Pump Current————————
2Lambda 2 VGND————————
3Lambda 2 Heater Negative—W54—0.5OEM-X60002-12———
4PWM 9—W60—0.5OEM-X60003-9———
5Lambda 2 Trim Resistor————————
6Lambda 2 Nernst Voltage————————
7Lambda 1 Pump Current————————
8Lambda 1 VGND————————
9Lambda 1 Heater Negative—W53—0.5OEM-X60002-1———
10PWM 8—W59—0.5OEM-X60003-21———
11Lambda 1 Trim Resistor————————
12Lambda 1 Nernst Voltage————————
13Analogue 13————————
14Analogue 14————————
15Analogue 15————————
16Analogue 16————————
17Analogue 7—W62—0.5OEM-X60002-16———
18Analogue 8————————
19Digital 7————————
20Digital 8————————
21Digital 9————————
22PWM 4—W55—0.5OEM-X60002-2———
23PWM 5—W56—0.5OEM-X60002-6———
24PWM 6—W57—0.5OEM-X60003-10———
25PWM 7—W58—0.5OEM-X60003-12———
26Permanent 12v—W6—0.85OEM-X60001-7———
27Permanent 12v————————
28PWM 10————————
29PWM 11————————
30PWM 12————————
31Knock 1—W30—0.5OEM-X60003-33———
32Knock 2—W31—0.5OEM-X60003-34———
33CAN 2 High————————
34CAN 2 Low————————

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-X60001-1Injector relay controllow_side_outT12-C1-5PWM 1low_side_outcorroborated
OEM-X60001-2DBW output-stage supply (P_DKSM+)power_inT12-C1-31Ignition 12v Inpower_insingle_source
OEM-X60001-4Power groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60001-5Power groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60001-6Power groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60001-7Battery constant (terminal 30)power_inT12-C3-26Permanent 12vpower_incorroborated
OEM-X60001-8ECU main power (terminal 87 via main relay)power_inT12-C1-31Ignition 12v Inpower_incorroborated
OEM-X60001-9DBW output-stage return (P_DKSM-)groundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundsingle_source
OEM-X60002-1O2 sensor heater, front 1 (pre-cat)low_side_outT12-C3-9Lambda 1 Heater Negativelow_side_outcorroborated
OEM-X60002-12O2 sensor heater, rear 2 (post-cat)low_side_outT12-C3-3Lambda 2 Heater Negativelow_side_outcorroborated
OEM-X60002-14O2 sensor signal, rear 2 (post-cat)lambda_nb_inT12-C2-19Analogue 6analog_incorroborated
OEM-X60002-16O2 sensor signal, rear 1 (post-cat)lambda_nb_inT12-C3-17Analogue 7analog_incorroborated
OEM-X60002-2O2 sensor heater, front 2 (pre-cat)low_side_outT12-C3-22PWM 4low_side_outcorroborated
OEM-X60002-23Main relay controllow_side_outT12-C1-4PWM 2low_side_outcorroborated
OEM-X60002-6O2 sensor heater, rear 1 (post-cat)low_side_outT12-C3-23PWM 5low_side_outcorroborated
OEM-X60003-1Mass air flow (MAF) signalanalog_inT12-C2-10Analogue 1analog_incorroborated
OEM-X60003-10VANOS intake solenoidlow_side_outT12-C3-24PWM 6low_side_outcorroborated
OEM-X60003-11Injector cylinder 5injector_outT12-C1-16Injector 5injector_outcorroborated
OEM-X60003-12Map-controlled thermostatlow_side_outT12-C3-25PWM 7low_side_outcorroborated
OEM-X60003-13Injector cylinder 1injector_outT12-C1-9Injector 1injector_outcorroborated
OEM-X60003-15Throttle groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-16Oil pressure switchdigital_inT12-C2-4Digital 1digital_incorroborated
OEM-X60003-21Evap purge valvelow_side_outT12-C3-10PWM 8low_side_outcorroborated
OEM-X60003-22Idle speed control, closehbridge_out———corroborated
OEM-X60003-23Idle speed control, openhbridge_out———corroborated
OEM-X60003-26Injector cylinder 3injector_outT12-C1-34Injector 3injector_outcorroborated
OEM-X60003-27Intake air temperature (IAT)temp_inT12-C2-25Thermistor 2temp_incorroborated
OEM-X60003-28Engine coolant temperature (ECT)temp_inT12-C2-7Thermistor 1temp_incorroborated
OEM-X60003-29Intake camshaft positiontrigger_inT12-C2-29Cam 2trigger_incorroborated
OEM-X60003-3Crankshaft positiontrigger_inT12-C2-12Cranktrigger_incorroborated
OEM-X60003-30Exhaust camshaft positiontrigger_inT12-C2-22Cam 1trigger_incorroborated
OEM-X60003-31Throttle position sensor 2analog_inT12-C2-6Analogue 4analog_incorroborated
OEM-X60003-32Throttle position sensor 1analog_inT12-C2-1Analogue 2analog_incorroborated
OEM-X60003-33Knock sensor 1knock_inT12-C3-31Knock 1knock_incorroborated
OEM-X60003-34Knock sensor 2knock_inT12-C3-32Knock 2knock_incorroborated
OEM-X60003-35ECT groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-36Intake camshaft groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-37Crankshaft groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-4MAF supplypower_inT12-C1-31Ignition 12v Inpower_incorroborated
OEM-X60003-42Throttle motor drive 1 (H-bridge)hbridge_out———corroborated
OEM-X60003-43Throttle motor drive 2 (H-bridge)hbridge_out———corroborated
OEM-X60003-44Engine oil temperaturetemp_inT12-C2-17Thermistor 3temp_incorroborated
OEM-X60003-45Oil temperature groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-46Knock sensor 3knock_in———corroborated
OEM-X60003-47Knock sensor 4knock_in———corroborated
OEM-X60003-49Exhaust camshaft groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-5Throttle (EDK/ITB) supplypower_inT12-C1-31Ignition 12v Inpower_incorroborated
OEM-X60003-50Oil level switchdigital_inT12-C2-8Digital 2digital_incorroborated
OEM-X60003-6Injector cylinder 2injector_outT12-C1-17Injector 2injector_outcorroborated
OEM-X60003-7Injector cylinder 4injector_outT12-C1-25Injector 4injector_outcorroborated
OEM-X60003-8Injector cylinder 6injector_outT12-C1-15Injector 6injector_outcorroborated
OEM-X60003-9VANOS exhaust solenoidlow_side_outT12-C3-4PWM 9low_side_outcorroborated
OEM-X60004-10Fuel pump relay controllow_side_outT12-C1-3PWM 3low_side_outcorroborated
OEM-X60004-12Pedal ground 2sensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60004-13Pedal position signal 2analog_inT12-C2-18Analogue 5analog_incorroborated
OEM-X60004-14Pedal +5V supply 2vrefT12-C2-245v Outputvrefcorroborated
OEM-X60004-7Pedal ground 1sensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60004-8Pedal position signal 1analog_inT12-C2-5Analogue 3analog_incorroborated
OEM-X60004-9Pedal +5V supply 1vrefT12-C2-245v Outputvrefcorroborated
OEM-X60005-1Ignition coil 5ignition_outT12-C1-11Coil 5ignition_outcorroborated
OEM-X60005-4Ignition coil 3ignition_outT12-C1-1Coil 3ignition_outcorroborated
OEM-X60005-5Ignition groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60005-6Ignition coil 1ignition_outT12-C1-10Coil 1ignition_outcorroborated
OEM-X60005-7Ignition coil 2ignition_outT12-C1-18Coil 2ignition_outcorroborated
OEM-X60005-8Ignition coil 4ignition_outT12-C1-26Coil 4ignition_outcorroborated
OEM-X60005-9Ignition coil 6ignition_outT12-C1-27Coil 6ignition_outcorroborated

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-X60001-2SP-14V-10.85no routeDBW output-stage supply (P_DKSM+)—
W2OEM-X60001-8SP-14V-10.85no routeECU main power (terminal 87 via main relay)—
W3OEM-X60003-4SP-14V-10.85no routeMAF supply—
W4OEM-X60003-5SP-14V-10.85no routeThrottle (EDK/ITB) supply—
W5SP-14V-1T12-C1-310.85no routeIgnition 12v In—
W6OEM-X60001-7T12-C3-260.85no routeBattery constant (terminal 30)—
W7OEM-X60001-4SP-GND-10.85no routePower ground—
W8OEM-X60001-5SP-GND-10.85no routePower ground—
W9OEM-X60001-6SP-GND-10.85no routePower ground—
W10OEM-X60001-9SP-GND-10.85no routeDBW output-stage return (P_DKSM-)—
W11OEM-X60005-5SP-GND-10.85no routeIgnition ground—
W12SP-GND-1T12-C1-130.85no routePower Ground 1—
W13SP-GND-1T12-C1-140.85no routePower Ground 2—
W14OEM-X60003-15SP-0V-10.5no routeThrottle ground—
W15OEM-X60003-35SP-0V-10.5no routeECT ground—
W16OEM-X60003-36SP-0V-10.5no routeIntake camshaft ground—
W17OEM-X60003-37SP-0V-10.5no routeCrankshaft ground—
W18OEM-X60003-45SP-0V-10.5no routeOil temperature ground—
W19OEM-X60003-49SP-0V-10.5no routeExhaust camshaft ground—
W20OEM-X60004-12SP-0V-10.5no routePedal ground 2—
W21OEM-X60004-7SP-0V-10.5no routePedal ground 1—
W22SP-0V-1T12-C2-210.5no routeSensor Ground—
W23SP-0V-1T12-C2-330.5no routeSensor Ground—
W24OEM-X60004-14SP-5V1-10.5no routePedal +5V supply 2—
W25OEM-X60004-9SP-5V1-10.5no routePedal +5V supply 1—
W26SP-5V1-1T12-C2-240.5no route5v Output—
W27OEM-X60003-3T12-C2-120.5no routeCrankshaft position—
W28OEM-X60003-30T12-C2-220.5no routeExhaust camshaft position—
W29OEM-X60003-29T12-C2-290.5no routeIntake camshaft position—
W30OEM-X60003-33T12-C3-310.5no routeKnock sensor 1—
W31OEM-X60003-34T12-C3-320.5no routeKnock sensor 2—
W32OEM-X60005-6T12-C1-100.5no routeIgnition coil 1—
W33OEM-X60005-7T12-C1-180.5no routeIgnition coil 2—
W34OEM-X60005-4T12-C1-10.5no routeIgnition coil 3—
W35OEM-X60005-8T12-C1-260.5no routeIgnition coil 4—
W36OEM-X60005-1T12-C1-110.5no routeIgnition coil 5—
W37OEM-X60005-9T12-C1-270.5no routeIgnition coil 6—
W38OEM-X60003-13T12-C1-90.5no routeInjector cylinder 1—
W39OEM-X60003-6T12-C1-170.5no routeInjector cylinder 2—
W40OEM-X60003-26T12-C1-340.5no routeInjector cylinder 3—
W41OEM-X60003-7T12-C1-250.5no routeInjector cylinder 4—
W42OEM-X60003-11T12-C1-160.5no routeInjector cylinder 5—
W43OEM-X60003-8T12-C1-150.5no routeInjector cylinder 6—
W44OEM-X60003-1T12-C2-100.5no routeMass air flow (MAF) signal—
W45OEM-X60003-32T12-C2-10.5no routeThrottle position sensor 1—
W46OEM-X60004-8T12-C2-50.5no routePedal position signal 1—
W47OEM-X60003-31T12-C2-60.5no routeThrottle position sensor 2—
W48OEM-X60004-13T12-C2-180.5no routePedal position signal 2—
W49OEM-X60003-28T12-C2-70.5no routeEngine coolant temperature (ECT)—
W50OEM-X60001-1T12-C1-50.5no routeInjector relay control—
W51OEM-X60002-23T12-C1-40.5no routeMain relay control—
W52OEM-X60004-10T12-C1-30.5no routeFuel pump relay control—
W53OEM-X60002-1T12-C3-90.5no routeO2 sensor heater, front 1 (pre-cat)—
W54OEM-X60002-12T12-C3-30.5no routeO2 sensor heater, rear 2 (post-cat)—
W55OEM-X60002-2T12-C3-220.5no routeO2 sensor heater, front 2 (pre-cat)—
W56OEM-X60002-6T12-C3-230.5no routeO2 sensor heater, rear 1 (post-cat)—
W57OEM-X60003-10T12-C3-240.5no routeVANOS intake solenoid—
W58OEM-X60003-12T12-C3-250.5no routeMap-controlled thermostat—
W59OEM-X60003-21T12-C3-100.5no routeEvap purge valve—
W60OEM-X60003-9T12-C3-40.5no routeVANOS exhaust solenoid—
W61OEM-X60002-14T12-C2-190.5no routeO2 sensor signal, rear 2 (post-cat)—
W62OEM-X60002-16T12-C3-170.5no routeO2 sensor signal, rear 1 (post-cat)—
W63OEM-X60003-27T12-C2-250.5no routeIntake air temperature (IAT)—
W64OEM-X60003-44T12-C2-170.5no routeEngine oil temperature—
W65OEM-X60003-16T12-C2-40.5no routeOil pressure switch—
W66OEM-X60003-50T12-C2-80.5no routeOil level switch—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 13.000ea
connectorBMW-E46-MSS54-CONNBMWE46 DME (MSS54) harness connector1.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)47.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (4)

SeverityCodeSubjectMessage
errorPHYS_REQUIRED_OPENT12-C3-27T12-C3-27 "Permanent 12v" is required but not wired.
errorREQUIRED_UNMAPPEDOEM-X60003-42Required OEM function "Throttle motor drive 1 (H-bridge)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-X60003-43Required OEM function "Throttle motor drive 2 (H-bridge)" (hbridge_out) is not connected to the new ECU.
infoUNMAPPEDOEM4 optional OEM pins are not mapped: OEM-X60003-22 Idle speed control, close; OEM-X60003-23 Idle speed control, open; OEM-X60003-46 Knock sensor 3; OEM-X60003-47 Knock sensor 4

Accepted (0)

CodeSubjectReasonBy

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: - OEM-X60003 42: Throttle motor drive 1 (H-bridge): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-X60003 43: Throttle motor drive 2 (H-bridge): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - T12-C3 27: Permanent 12v: required by DTAFast T12 but no stock pin feeds it; wire by hand Not wired: - OEM-X60003 46: Knock sensor 3: no free knock input on DTAFast T12 - OEM-X60003 47: Knock sensor 4: no free knock input on DTAFast T12 - OEM-X60003 22: Idle speed control, close: no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-X60003 23: Idle speed control, open: no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4oem_wiring_diagramBMW WDS A6000 DME pin table, E83 X3 (M54B30/MS45)https://wds.psjr.org/sv/e83/zinfo/E83_PA6000A.htm———
4vendor_docDTAFast T12+ ECU wiring diagram (served for T12 and T12+)https://cdn.shopify.com/s/files/1/0848/7508/4108/files/T12PLUS_Wiring-Diagram.pdf?v=1728572014———
2community_copybimmer-service: DME MSS54 (S54) pinouthttps://www.bimmer-service.com/2025/11/14/dme-mss54-s54-pinout-schematic-diagram/———
2community_copyrusefi wiki: 2002 and 2004 BMW M3 E46 DME pinout (S54/MSS54)https://github.com/rusefi/rusefi/wiki/2002-and-2004-BMW-M3-E46-DME-pinout———