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BMW 3 Series E46 M3 2001–2006 (S54) → Haltech Elite 2500 HT-151300 (auto)

BMW 3 Series E46 M3 2001–2006 (S54) — Haltech — Elite 2500
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08

Before you start

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errorsnone
Size of the job71 wires · 11 connectors · 1 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-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-1ELITE2500-A-260.85☐☐☐☐☐☐☐
W6SP-14V-1ELITE2500-B-110.85☐☐☐☐☐☐☐
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-1ELITE2500-A-100.85☐☐☐☐☐☐☐
W13SP-GND-1ELITE2500-A-110.85☐☐☐☐☐☐☐
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-1ELITE2500-B-140.5☐☐☐☐☐☐☐
W23SP-0V-1ELITE2500-B-150.5☐☐☐☐☐☐☐
W24SP-0V-1ELITE2500-B-160.5☐☐☐☐☐☐☐
W25OEM-X60004-14SP-5V1-10.5☐☐☐☐☐☐☐
W26OEM-X60004-9SP-5V1-10.5☐☐☐☐☐☐☐
W27SP-5V1-1ELITE2500-A-90.5☐☐☐☐☐☐☐
W28OEM-X60003-3ELITE2500-B-10.5☐☐☐☐☐☐☐
W29SP-0V-1ELITE2500-B-50.5☐☐☐☐☐☐☐
W30OEM-X60003-30ELITE2500-B-20.5☐☐☐☐☐☐☐
W31SP-0V-1ELITE2500-B-60.5☐☐☐☐☐☐☐
W32OEM-X60003-29ELITE2500-B-80.5☐☐☐☐☐☐☐
W33OEM-X60003-33ELITE2500-B-210.5☐☐☐☐☐☐☐
W34OEM-X60003-34ELITE2500-B-220.5☐☐☐☐☐☐☐
W35OEM-X60005-6ELITE2500-A-30.5☐☐☐☐☐☐☐
W36OEM-X60005-7ELITE2500-A-40.5☐☐☐☐☐☐☐
W37OEM-X60005-4ELITE2500-A-50.5☐☐☐☐☐☐☐
W38OEM-X60005-8ELITE2500-A-60.5☐☐☐☐☐☐☐
W39OEM-X60005-1ELITE2500-A-70.5☐☐☐☐☐☐☐
W40OEM-X60005-9ELITE2500-A-80.5☐☐☐☐☐☐☐
W41OEM-X60003-13ELITE2500-A-190.5☐☐☐☐☐☐☐
W42OEM-X60003-6ELITE2500-A-200.5☐☐☐☐☐☐☐
W43OEM-X60003-26ELITE2500-A-210.5☐☐☐☐☐☐☐
W44OEM-X60003-7ELITE2500-A-220.5☐☐☐☐☐☐☐
W45OEM-X60003-11ELITE2500-A-270.5☐☐☐☐☐☐☐
W46OEM-X60003-8ELITE2500-A-280.5☐☐☐☐☐☐☐
W47OEM-X60003-42ELITE2500-B-250.5☐☐☐☐☐☐☐
W48OEM-X60003-43ELITE2500-B-260.5☐☐☐☐☐☐☐
W49OEM-X60001-1ELITE2500-A-250.5☐☐☐☐☐☐☐
W50OEM-X60002-23ELITE2500-A-180.5☐☐☐☐☐☐☐
W51OEM-X60004-10ELITE2500-A-240.5☐☐☐☐☐☐☐
W52OEM-X60002-1ELITE2500-A-10.5☐☐☐☐☐☐☐
W53OEM-X60002-12ELITE2500-A-230.5☐☐☐☐☐☐☐
W54OEM-X60002-2ELITE2500-B-190.5☐☐☐☐☐☐☐
W55OEM-X60002-6ELITE2500-A-310.5☐☐☐☐☐☐☐
W56OEM-X60003-10ELITE2500-A-320.5☐☐☐☐☐☐☐
W57OEM-X60003-12ELITE2500-A-330.5☐☐☐☐☐☐☐
W58OEM-X60003-21ELITE2500-A-340.5☐☐☐☐☐☐☐
W59OEM-X60003-9ELITE2500-A-290.5☐☐☐☐☐☐☐
W60OEM-X60003-1ELITE2500-B-130.5☐☐☐☐☐☐☐
W61OEM-X60003-32ELITE2500-A-160.5☐☐☐☐☐☐☐
W62OEM-X60004-8ELITE2500-A-170.5☐☐☐☐☐☐☐
W63OEM-X60003-31ELITE2500-A-20.5☐☐☐☐☐☐☐
W64OEM-X60004-13ELITE2500-B-200.5☐☐☐☐☐☐☐
W65OEM-X60002-14ELITE2500-B-120.5☐☐☐☐☐☐☐
W66OEM-X60002-16ELITE2500-B-30.5☐☐☐☐☐☐☐
W67OEM-X60003-28ELITE2500-B-40.5☐☐☐☐☐☐☐
W68OEM-X60003-27ELITE2500-A-150.5☐☐☐☐☐☐☐
W69OEM-X60003-44ELITE2500-A-140.5☐☐☐☐☐☐☐
W70OEM-X60003-16ELITE2500-B-90.5☐☐☐☐☐☐☐
W71OEM-X60003-50ELITE2500-B-100.5☐☐☐☐☐☐☐

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
1ELITE2500-A-26ELITE2500-A-10open (OL)+12 V supply must not touch power ground
2ELITE2500-A-26ELITE2500-B-14open (OL)+12 V supply must not touch sensor ground
3ELITE2500-A-10ELITE2500-A-9open (OL)power ground must not touch 5 V sensor reference
4ELITE2500-A-26ELITE2500-A-9open (OL)+12 V supply must not touch 5 V sensor reference
5ELITE2500-B-14ELITE2500-A-9open (OL)sensor ground must not touch 5 V sensor reference

Revisions

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Schematic

ELITE2500-AELITE2500-BOEM-X60001OEM-X60002OEM-X60003OEM-X60004OEM-X60005SP-0VSP-14VSP-5V1SP-GND

Connectors

ELITE2500-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1DPO 2—W52—0.5OEM-X60002-1———
10Battery ground—W12—0.85SP-GND-1———
11Battery ground—W13—0.85SP-GND-1———
12+8V DC————————
1312V ignition input————————
14AVI 10 (TPS)—W69—0.5OEM-X60003-44———
15AVI 9 (MAP)—W68—0.5OEM-X60003-27———
16AVI 2—W61—0.5OEM-X60003-32———
17AVI 3—W62—0.5OEM-X60004-8———
18DPO 1—W50—0.5OEM-X60002-23———
19INJ 1—W41—0.5OEM-X60003-13———
2AVI 4—W63—0.5OEM-X60003-31———
20INJ 2—W42—0.5OEM-X60003-6———
21INJ 3—W43—0.5OEM-X60003-26———
22INJ 4—W44—0.5OEM-X60003-7———
23DPO 3—W53—0.5OEM-X60002-12———
24DPO 5 (fuel pump trigger)—W51—0.5OEM-X60004-10———
25DPO 6 (ECR OUT)—W49—0.5OEM-X60001-1———
26ECU injector power input—W5—0.85SP-14V-1———
27INJ 5—W45—0.5OEM-X60003-11———
28INJ 6—W46—0.5OEM-X60003-8———
29INJ 7—W59—0.5OEM-X60003-9———
3IGN 1—W35—0.5OEM-X60005-6———
30INJ 8————————
31Stepper 1 P1 / DPO—W55—0.5OEM-X60002-6———
32Stepper 1 P2 / DPO—W56—0.5OEM-X60003-10———
33Stepper 1 P3 / DPO—W57—0.5OEM-X60003-12———
34Stepper 1 P4 / DPO—W58—0.5OEM-X60003-21———
4IGN 2—W36—0.5OEM-X60005-7———
5IGN 3—W37—0.5OEM-X60005-4———
6IGN 4—W38—0.5OEM-X60005-8———
7IGN 5—W39—0.5OEM-X60005-1———
8IGN 6—W40—0.5OEM-X60005-9———
9+5V DC—W27—0.5SP-5V1-1———

ELITE2500-B

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Crank (Trigger) (+)—W28—0.5OEM-X60003-3———
10SPI 3—W71—0.5OEM-X60003-50———
11+13.8V ECU supply—W6—0.85SP-14V-1———
12AVI 6 (O2 Input 1)—W65—0.5OEM-X60002-14———
13AVI 1 (O2 Input 2)—W60—0.5OEM-X60003-1———
14Signal ground—W22—0.5SP-0V-1———
15Signal ground—W23—0.5SP-0V-1———
16Signal ground—W24—0.5SP-0V-1———
17IGN 7————————
18IGN 8————————
19DPO 4—W54—0.5OEM-X60002-2———
2Cam (Home) (+)—W30—0.5OEM-X60003-30———
20AVI 5—W64—0.5OEM-X60004-13———
21KNOCK 1—W33—0.5OEM-X60003-33———
22KNOCK 2—W34—0.5OEM-X60003-34———
23CAN H————————
24CAN L————————
25DBW 1 / DPO—W47—0.5OEM-X60003-42———
26DBW 2 / DPO—W48—0.5OEM-X60003-43———
3AVI 7 (Air Temp)—W66—0.5OEM-X60002-16———
4AVI 8 (Coolant Temp)—W67—0.5OEM-X60003-28———
5Crank (Trigger) (−)—W29—0.5SP-0V-1———
6Cam (Home) (−)—W31—0.5SP-0V-1———
7SPI 4————————
8SPI 1—W32—0.5OEM-X60003-29———
9SPI 2—W70—0.5OEM-X60003-16———

OEM-X60001

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector relay control—W49—0.5ELITE2500-A-25———
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)————————
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)—W52—0.5ELITE2500-A-1———
12O2 sensor heater, rear 2 (post-cat)—W53—0.5ELITE2500-A-23———
14O2 sensor signal, rear 2 (post-cat)—W65—0.5ELITE2500-B-12———
16O2 sensor signal, rear 1 (post-cat)—W66—0.5ELITE2500-B-3———
2O2 sensor heater, front 2 (pre-cat)—W54—0.5ELITE2500-B-19———
23Main relay control—W50—0.5ELITE2500-A-18———
6O2 sensor heater, rear 1 (post-cat)—W55—0.5ELITE2500-A-31———

OEM-X60003

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Mass air flow (MAF) signal—W60—0.5ELITE2500-B-13———
10VANOS intake solenoid—W56—0.5ELITE2500-A-32———
11Injector cylinder 5—W45—0.5ELITE2500-A-27———
12Map-controlled thermostat—W57—0.5ELITE2500-A-33———
13Injector cylinder 1—W41—0.5ELITE2500-A-19———
15Throttle ground—W14—0.5SP-0V-1———
16Oil pressure switch—W70—0.5ELITE2500-B-9———
21Evap purge valve—W58—0.5ELITE2500-A-34———
22Idle speed control, close————————
23Idle speed control, open————————
26Injector cylinder 3—W43—0.5ELITE2500-A-21———
27Intake air temperature (IAT)—W68—0.5ELITE2500-A-15———
28Engine coolant temperature (ECT)—W67—0.5ELITE2500-B-4———
29Intake camshaft position—W32—0.5ELITE2500-B-8———
3Crankshaft position—W28—0.5ELITE2500-B-1———
30Exhaust camshaft position—W30—0.5ELITE2500-B-2———
31Throttle position sensor 2—W63—0.5ELITE2500-A-2———
32Throttle position sensor 1—W61—0.5ELITE2500-A-16———
33Knock sensor 1—W33—0.5ELITE2500-B-21———
34Knock sensor 2—W34—0.5ELITE2500-B-22———
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)—W47—0.5ELITE2500-B-25———
43Throttle motor drive 2 (H-bridge)—W48—0.5ELITE2500-B-26———
44Engine oil temperature—W69—0.5ELITE2500-A-14———
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—W71—0.5ELITE2500-B-10———
6Injector cylinder 2—W42—0.5ELITE2500-A-20———
7Injector cylinder 4—W44—0.5ELITE2500-A-22———
8Injector cylinder 6—W46—0.5ELITE2500-A-28———
9VANOS exhaust solenoid—W59—0.5ELITE2500-A-29———

OEM-X60004

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Fuel pump relay control—W51—0.5ELITE2500-A-24———
12Pedal ground 2—W20—0.5SP-0V-1———
13Pedal position signal 2—W64—0.5ELITE2500-B-20———
14Pedal +5V supply 2—W25—0.5SP-5V1-1———
7Pedal ground 1—W21—0.5SP-0V-1———
8Pedal position signal 1—W62—0.5ELITE2500-A-17———
9Pedal +5V supply 1—W26—0.5SP-5V1-1———

OEM-X60005

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil 5—W39—0.5ELITE2500-A-7———
4Ignition coil 3—W37—0.5ELITE2500-A-5———
5Ignition ground—W11—0.85SP-GND-1———
6Ignition coil 1—W35—0.5ELITE2500-A-3———
7Ignition coil 2—W36—0.5ELITE2500-A-4———
8Ignition coil 4—W38—0.5ELITE2500-A-6———
9Ignition coil 6—W40—0.5ELITE2500-A-8———

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—0.5ELITE2500-B-14———
1——W23—0.5ELITE2500-B-15———
1——W24—0.5ELITE2500-B-16———
1——W29—0.5ELITE2500-B-5———
1——W31—0.5ELITE2500-B-6———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-X60001-2———
1——W2—0.85OEM-X60001-8———
1——W3—0.85OEM-X60003-4———
1——W4—0.85OEM-X60003-5———
1——W5—0.85ELITE2500-A-26———
1——W6—0.85ELITE2500-B-11———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W25—0.5OEM-X60004-14———
1——W26—0.5OEM-X60004-9———
1——W27—0.5ELITE2500-A-9———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W7—0.85OEM-X60001-4———
1——W8—0.85OEM-X60001-5———
1——W9—0.85OEM-X60001-6———
1——W10—0.85OEM-X60001-9———
1——W11—0.85OEM-X60005-5———
1——W12—0.85ELITE2500-A-10———
1——W13—0.85ELITE2500-A-11———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-X60001-1Injector relay controllow_side_outELITE2500-A-25DPO 6 (ECR OUT)low_side_outcorroborated
OEM-X60001-2DBW output-stage supply (P_DKSM+)power_inELITE2500-A-26 + ELITE2500-B-11ECU injector power input + +13.8V ECU supplypower_insingle_source
OEM-X60001-4Power groundgroundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundcorroborated
OEM-X60001-5Power groundgroundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundcorroborated
OEM-X60001-6Power groundgroundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundcorroborated
OEM-X60001-7Battery constant (terminal 30)power_in———corroborated
OEM-X60001-8ECU main power (terminal 87 via main relay)power_inELITE2500-A-26 + ELITE2500-B-11ECU injector power input + +13.8V ECU supplypower_incorroborated
OEM-X60001-9DBW output-stage return (P_DKSM-)groundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundsingle_source
OEM-X60002-1O2 sensor heater, front 1 (pre-cat)low_side_outELITE2500-A-1DPO 2low_side_outcorroborated
OEM-X60002-12O2 sensor heater, rear 2 (post-cat)low_side_outELITE2500-A-23DPO 3low_side_outcorroborated
OEM-X60002-14O2 sensor signal, rear 2 (post-cat)lambda_nb_inELITE2500-B-12AVI 6 (O2 Input 1)analog_incorroborated
OEM-X60002-16O2 sensor signal, rear 1 (post-cat)lambda_nb_inELITE2500-B-3AVI 7 (Air Temp)analog_incorroborated
OEM-X60002-2O2 sensor heater, front 2 (pre-cat)low_side_outELITE2500-B-19DPO 4low_side_outcorroborated
OEM-X60002-23Main relay controllow_side_outELITE2500-A-18DPO 1low_side_outcorroborated
OEM-X60002-6O2 sensor heater, rear 1 (post-cat)low_side_outELITE2500-A-31Stepper 1 P1 / DPOswitch_outcorroborated
OEM-X60003-1Mass air flow (MAF) signalanalog_inELITE2500-B-13AVI 1 (O2 Input 2)analog_incorroborated
OEM-X60003-10VANOS intake solenoidlow_side_outELITE2500-A-32Stepper 1 P2 / DPOswitch_outcorroborated
OEM-X60003-11Injector cylinder 5injector_outELITE2500-A-27INJ 5injector_outcorroborated
OEM-X60003-12Map-controlled thermostatlow_side_outELITE2500-A-33Stepper 1 P3 / DPOswitch_outcorroborated
OEM-X60003-13Injector cylinder 1injector_outELITE2500-A-19INJ 1injector_outcorroborated
OEM-X60003-15Throttle groundsensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60003-16Oil pressure switchdigital_inELITE2500-B-9SPI 2digital_incorroborated
OEM-X60003-21Evap purge valvelow_side_outELITE2500-A-34Stepper 1 P4 / DPOswitch_outcorroborated
OEM-X60003-22Idle speed control, closehbridge_out———corroborated
OEM-X60003-23Idle speed control, openhbridge_out———corroborated
OEM-X60003-26Injector cylinder 3injector_outELITE2500-A-21INJ 3injector_outcorroborated
OEM-X60003-27Intake air temperature (IAT)temp_inELITE2500-A-15AVI 9 (MAP)analog_incorroborated
OEM-X60003-28Engine coolant temperature (ECT)temp_inELITE2500-B-4AVI 8 (Coolant Temp)analog_incorroborated
OEM-X60003-29Intake camshaft positiontrigger_inELITE2500-B-8SPI 1digital_incorroborated
OEM-X60003-3Crankshaft positiontrigger_inELITE2500-B-1Crank (Trigger) (+)trigger_incorroborated
OEM-X60003-30Exhaust camshaft positiontrigger_inELITE2500-B-2Cam (Home) (+)trigger_incorroborated
OEM-X60003-31Throttle position sensor 2analog_inELITE2500-A-2AVI 4analog_incorroborated
OEM-X60003-32Throttle position sensor 1analog_inELITE2500-A-16AVI 2analog_incorroborated
OEM-X60003-33Knock sensor 1knock_inELITE2500-B-21KNOCK 1knock_incorroborated
OEM-X60003-34Knock sensor 2knock_inELITE2500-B-22KNOCK 2knock_incorroborated
OEM-X60003-35ECT groundsensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60003-36Intake camshaft groundsensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60003-37Crankshaft groundsensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60003-4MAF supplypower_inELITE2500-A-26 + ELITE2500-B-11ECU injector power input + +13.8V ECU supplypower_incorroborated
OEM-X60003-42Throttle motor drive 1 (H-bridge)hbridge_outELITE2500-B-25DBW 1 / DPOhbridge_outcorroborated
OEM-X60003-43Throttle motor drive 2 (H-bridge)hbridge_outELITE2500-B-26DBW 2 / DPOhbridge_outcorroborated
OEM-X60003-44Engine oil temperaturetemp_inELITE2500-A-14AVI 10 (TPS)analog_incorroborated
OEM-X60003-45Oil temperature groundsensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60003-46Knock sensor 3knock_in———corroborated
OEM-X60003-47Knock sensor 4knock_in———corroborated
OEM-X60003-49Exhaust camshaft groundsensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60003-5Throttle (EDK/ITB) supplypower_inELITE2500-A-26 + ELITE2500-B-11ECU injector power input + +13.8V ECU supplypower_incorroborated
OEM-X60003-50Oil level switchdigital_inELITE2500-B-10SPI 3digital_incorroborated
OEM-X60003-6Injector cylinder 2injector_outELITE2500-A-20INJ 2injector_outcorroborated
OEM-X60003-7Injector cylinder 4injector_outELITE2500-A-22INJ 4injector_outcorroborated
OEM-X60003-8Injector cylinder 6injector_outELITE2500-A-28INJ 6injector_outcorroborated
OEM-X60003-9VANOS exhaust solenoidlow_side_outELITE2500-A-29INJ 7injector_outcorroborated
OEM-X60004-10Fuel pump relay controllow_side_outELITE2500-A-24DPO 5 (fuel pump trigger)low_side_outcorroborated
OEM-X60004-12Pedal ground 2sensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60004-13Pedal position signal 2analog_inELITE2500-B-20AVI 5analog_incorroborated
OEM-X60004-14Pedal +5V supply 2vrefELITE2500-A-9+5V DCvrefcorroborated
OEM-X60004-7Pedal ground 1sensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_incorroborated
OEM-X60004-8Pedal position signal 1analog_inELITE2500-A-17AVI 3analog_incorroborated
OEM-X60004-9Pedal +5V supply 1vrefELITE2500-A-9+5V DCvrefcorroborated
OEM-X60005-1Ignition coil 5ignition_outELITE2500-A-7IGN 5ignition_outcorroborated
OEM-X60005-4Ignition coil 3ignition_outELITE2500-A-5IGN 3ignition_outcorroborated
OEM-X60005-5Ignition groundgroundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundcorroborated
OEM-X60005-6Ignition coil 1ignition_outELITE2500-A-3IGN 1ignition_outcorroborated
OEM-X60005-7Ignition coil 2ignition_outELITE2500-A-4IGN 2ignition_outcorroborated
OEM-X60005-8Ignition coil 4ignition_outELITE2500-A-6IGN 4ignition_outcorroborated
OEM-X60005-9Ignition coil 6ignition_outELITE2500-A-8IGN 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-1ELITE2500-A-260.85no routeECU injector power input—
W6SP-14V-1ELITE2500-B-110.85no route+13.8V ECU supply—
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-1ELITE2500-A-100.85no routeBattery ground—
W13SP-GND-1ELITE2500-A-110.85no routeBattery ground—
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-1ELITE2500-B-140.5no routeSignal ground—
W23SP-0V-1ELITE2500-B-150.5no routeSignal ground—
W24SP-0V-1ELITE2500-B-160.5no routeSignal ground—
W25OEM-X60004-14SP-5V1-10.5no routePedal +5V supply 2—
W26OEM-X60004-9SP-5V1-10.5no routePedal +5V supply 1—
W27SP-5V1-1ELITE2500-A-90.5no route+5V DC—
W28OEM-X60003-3ELITE2500-B-10.5no routeCrankshaft position—
W29SP-0V-1ELITE2500-B-50.5no routeCrank (Trigger) (−)—
W30OEM-X60003-30ELITE2500-B-20.5no routeExhaust camshaft position—
W31SP-0V-1ELITE2500-B-60.5no routeCam (Home) (−)—
W32OEM-X60003-29ELITE2500-B-80.5no routeIntake camshaft position—
W33OEM-X60003-33ELITE2500-B-210.5no routeKnock sensor 1—
W34OEM-X60003-34ELITE2500-B-220.5no routeKnock sensor 2—
W35OEM-X60005-6ELITE2500-A-30.5no routeIgnition coil 1—
W36OEM-X60005-7ELITE2500-A-40.5no routeIgnition coil 2—
W37OEM-X60005-4ELITE2500-A-50.5no routeIgnition coil 3—
W38OEM-X60005-8ELITE2500-A-60.5no routeIgnition coil 4—
W39OEM-X60005-1ELITE2500-A-70.5no routeIgnition coil 5—
W40OEM-X60005-9ELITE2500-A-80.5no routeIgnition coil 6—
W41OEM-X60003-13ELITE2500-A-190.5no routeInjector cylinder 1—
W42OEM-X60003-6ELITE2500-A-200.5no routeInjector cylinder 2—
W43OEM-X60003-26ELITE2500-A-210.5no routeInjector cylinder 3—
W44OEM-X60003-7ELITE2500-A-220.5no routeInjector cylinder 4—
W45OEM-X60003-11ELITE2500-A-270.5no routeInjector cylinder 5—
W46OEM-X60003-8ELITE2500-A-280.5no routeInjector cylinder 6—
W47OEM-X60003-42ELITE2500-B-250.5no routeThrottle motor drive 1 (H-bridge)—
W48OEM-X60003-43ELITE2500-B-260.5no routeThrottle motor drive 2 (H-bridge)—
W49OEM-X60001-1ELITE2500-A-250.5no routeInjector relay control—
W50OEM-X60002-23ELITE2500-A-180.5no routeMain relay control—
W51OEM-X60004-10ELITE2500-A-240.5no routeFuel pump relay control—
W52OEM-X60002-1ELITE2500-A-10.5no routeO2 sensor heater, front 1 (pre-cat)—
W53OEM-X60002-12ELITE2500-A-230.5no routeO2 sensor heater, rear 2 (post-cat)—
W54OEM-X60002-2ELITE2500-B-190.5no routeO2 sensor heater, front 2 (pre-cat)—
W55OEM-X60002-6ELITE2500-A-310.5no routeO2 sensor heater, rear 1 (post-cat)—
W56OEM-X60003-10ELITE2500-A-320.5no routeVANOS intake solenoid—
W57OEM-X60003-12ELITE2500-A-330.5no routeMap-controlled thermostat—
W58OEM-X60003-21ELITE2500-A-340.5no routeEvap purge valve—
W59OEM-X60003-9ELITE2500-A-290.5no routeVANOS exhaust solenoid—
W60OEM-X60003-1ELITE2500-B-130.5no routeMass air flow (MAF) signal—
W61OEM-X60003-32ELITE2500-A-160.5no routeThrottle position sensor 1—
W62OEM-X60004-8ELITE2500-A-170.5no routePedal position signal 1—
W63OEM-X60003-31ELITE2500-A-20.5no routeThrottle position sensor 2—
W64OEM-X60004-13ELITE2500-B-200.5no routePedal position signal 2—
W65OEM-X60002-14ELITE2500-B-120.5no routeO2 sensor signal, rear 2 (post-cat)—
W66OEM-X60002-16ELITE2500-B-30.5no routeO2 sensor signal, rear 1 (post-cat)—
W67OEM-X60003-28ELITE2500-B-40.5no routeEngine coolant temperature (ECT)—
W68OEM-X60003-27ELITE2500-A-150.5no routeIntake air temperature (IAT)—
W69OEM-X60003-44ELITE2500-A-140.5no routeEngine oil temperature—
W70OEM-X60003-16ELITE2500-B-90.5no routeOil pressure switch—
W71OEM-X60003-50ELITE2500-B-100.5no routeOil level switch—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connectorBMW-E46-MSS54-CONNBMWE46 DME (MSS54) harness connector1.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (13)

SeverityCodeSubjectMessage
warnDBW_MOTOR_CURRENTELITE2500-B-25Cannot confirm Elite 2500 can drive the throttle motor: ELITE2500-B-25 "DBW 1 / DPO" is rated 5.0 A, but the motor current at OEM-X60003-42 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).
warnDBW_MOTOR_CURRENTELITE2500-B-26Cannot confirm Elite 2500 can drive the throttle motor: ELITE2500-B-26 "DBW 2 / DPO" is rated 5.0 A, but the motor current at OEM-X60003-43 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).
warnNET_FAMILYOEM-X60003-29 ↔ ELITE2500-B-8OEM-X60003-29 "Intake camshaft position" [trigger_in] is wired to ELITE2500-B-8 "SPI 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
infoNET_FAMILYOEM-X60002-6 ↔ ELITE2500-A-31OEM-X60002-6 "O2 sensor heater, rear 1 (post-cat)" [low_side_out] is wired to ELITE2500-A-31 "Stepper 1 P1 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-X60003-10 ↔ ELITE2500-A-32OEM-X60003-10 "VANOS intake solenoid" [low_side_out] is wired to ELITE2500-A-32 "Stepper 1 P2 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-X60003-12 ↔ ELITE2500-A-33OEM-X60003-12 "Map-controlled thermostat" [low_side_out] is wired to ELITE2500-A-33 "Stepper 1 P3 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-X60003-21 ↔ ELITE2500-A-34OEM-X60003-21 "Evap purge valve" [low_side_out] is wired to ELITE2500-A-34 "Stepper 1 P4 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-X60003-27 ↔ ELITE2500-A-15OEM-X60003-27 "Intake air temperature (IAT)" [temp_in] is wired to ELITE2500-A-15 "AVI 9 (MAP)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-X60003-28 ↔ ELITE2500-B-4OEM-X60003-28 "Engine coolant temperature (ECT)" [temp_in] is wired to ELITE2500-B-4 "AVI 8 (Coolant Temp)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-X60003-44 ↔ ELITE2500-A-14OEM-X60003-44 "Engine oil temperature" [temp_in] is wired to ELITE2500-A-14 "AVI 10 (TPS)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-X60003-49 ↔ ELITE2500-B-5OEM-X60003-49 "Exhaust camshaft ground" [sensor_ground] is wired to ELITE2500-B-5 "Crank (Trigger) (−)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs.
infoNET_FAMILYOEM-X60003-9 ↔ ELITE2500-A-29OEM-X60003-9 "VANOS exhaust solenoid" [low_side_out] is wired to ELITE2500-A-29 "INJ 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
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 (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-X60001-7Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed.mapping-proposal

Notes

Fit check: unconfirmed. Confirm these before building: - Needs CAN (E46 K-bus/CAN); not documented for this ECU - Trigger pattern for BMW S54 not found in the ECU's docs (no BMW S-series trigger preset named) - This car has EWS 3.3 (rolling code) immobilizer; needs a delete/bypass Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-X60001 7: Battery constant (terminal 30): Haltech Elite 2500 has no battery-constant input; not needed - OEM-X60003 46: Knock sensor 3: no free knock input on Haltech Elite 2500 - OEM-X60003 47: Knock sensor 4: no free knock input on Haltech Elite 2500 - OEM-X60003 22: Idle speed control, close: no free hbridge on Haltech Elite 2500 - OEM-X60003 23: Idle speed control, open: no free hbridge on Haltech Elite 2500 - ELITE2500-A 13: 12V ignition input: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source

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_docHaltech Elite 2500 (HT-151300) spec sheethttps://joeblospeedshop.com/wp-content/uploads/2023/11/HT-151300_SPEC-SHEET-2500-ELITE.pdfarchive2026-10-05c97da78cb851
4vendor_docHaltech Elite 2500 — 26-pin connector pinouthttps://support.haltech.com/portal/en/kb/articles/main-connector-26-pin-elite2500archive2026-10-05ea6fd4d27ac7
4vendor_docHaltech Elite 2500 — 34-pin main connector pinouthttps://support.haltech.com/portal/en/kb/articles/main-connector-34-pin-elite2500archive2026-10-054e633dff8340
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———