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BMW 3 Series E36 1990–2000 (M50/M52) → ECUMASTER EMU PRO 16 (auto)

BMW 3 Series E36 1990–2000 (M50/M52) — ECUMASTER — EMU PRO 16
⚠ 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 errors1: read the Findings page before cutting any wire
Size of the job54 wires · 8 connectors · 6 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-X-54SP-14V-10.85☐☐☐☐☐☐☐
W2SP-14V-1EMUPRO16-B-140.85☐☐☐☐☐☐☐
W3SP-14V-1EMUPRO16-B-80.85☐☐☐☐☐☐☐
W4OEM-X-15SP-GND-10.85☐☐☐☐☐☐☐
W5OEM-X-34SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-X-55SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-X-6SP-GND-10.85☐☐☐☐☐☐☐
W8SP-GND-1EMUPRO16-A-110.85☐☐☐☐☐☐☐
W9SP-GND-1EMUPRO16-A-170.85☐☐☐☐☐☐☐
W10SP-GND-1EMUPRO16-A-190.85☐☐☐☐☐☐☐
W11SP-GND-1EMUPRO16-B-190.85☐☐☐☐☐☐☐
W12SP-GND-1EMUPRO16-C-300.85☐☐☐☐☐☐☐
W13SP-GND-1EMUPRO16-D-180.85☐☐☐☐☐☐☐
W14OEM-X-28SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-X-40SP-0V-10.5☐☐☐☐☐☐☐
W16OEM-X-43SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-X-44SP-0V-10.5☐☐☐☐☐☐☐
W18OEM-X-71SP-0V-10.5☐☐☐☐☐☐☐
W19SP-0V-1EMUPRO16-A-200.5☐☐☐☐☐☐☐
W20SP-0V-1EMUPRO16-B-90.5☐☐☐☐☐☐☐
W21SP-0V-1EMUPRO16-C-290.5☐☐☐☐☐☐☐
W22SP-0V-1EMUPRO16-D-170.5☐☐☐☐☐☐☐
W23OEM-X-59EMUPRO16-A-120.5☐☐☐☐☐☐☐
W24OEM-X-16EMUPRO16-A-210.5☐☐☐☐☐☐☐
W25OEM-X-70EMUPRO16-B-160.5☐☐☐☐☐☐☐
W26OEM-X-69EMUPRO16-B-170.5☐☐☐☐☐☐☐
W27OEM-X-50EMUPRO16-A-300.5☐☐☐☐☐☐☐
W28OEM-X-51EMUPRO16-A-290.5☐☐☐☐☐☐☐
W29OEM-X-52EMUPRO16-A-280.5☐☐☐☐☐☐☐
W30OEM-X-23EMUPRO16-A-270.5☐☐☐☐☐☐☐
W31OEM-X-25EMUPRO16-A-260.5☐☐☐☐☐☐☐
W32OEM-X-24EMUPRO16-A-180.5☐☐☐☐☐☐☐
W33OEM-X-33EMUPRO16-A-20.5☐☐☐☐☐☐☐
W34OEM-X-32EMUPRO16-A-30.5☐☐☐☐☐☐☐
W35OEM-X-31EMUPRO16-A-40.5☐☐☐☐☐☐☐
W36OEM-X-5EMUPRO16-A-50.5☐☐☐☐☐☐☐
W37OEM-X-3EMUPRO16-A-60.5☐☐☐☐☐☐☐
W38OEM-X-4EMUPRO16-A-70.5☐☐☐☐☐☐☐
W39OEM-X-56EMUPRO16-B-150.5☐☐☐☐☐☐☐
W40OEM-X-1EMUPRO16-B-10.5☐☐☐☐☐☐☐
W41OEM-X-27EMUPRO16-B-20.5☐☐☐☐☐☐☐
W42OEM-X-38EMUPRO16-B-30.5☐☐☐☐☐☐☐
W43OEM-X-2EMUPRO16-B-40.5☐☐☐☐☐☐☐
W44OEM-X-29EMUPRO16-B-50.5☐☐☐☐☐☐☐
W45OEM-X-36EMUPRO16-B-60.5☐☐☐☐☐☐☐
W46OEM-X-7EMUPRO16-B-70.5☐☐☐☐☐☐☐
W47OEM-X-8EMUPRO16-B-130.5☐☐☐☐☐☐☐
W48OEM-X-47EMUPRO16-A-250.5☐☐☐☐☐☐☐
W49OEM-X-41EMUPRO16-C-310.5☐☐☐☐☐☐☐
W50OEM-X-73EMUPRO16-C-180.5☐☐☐☐☐☐☐
W51OEM-X-13EMUPRO16-C-320.5☐☐☐☐☐☐☐
W52OEM-X-78EMUPRO16-C-110.5☐☐☐☐☐☐☐
W53OEM-X-77EMUPRO16-C-330.5☐☐☐☐☐☐☐
W54OEM-X-42EMUPRO16-A-130.5☐☐☐☐☐☐☐

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
1EMUPRO16-A-11EMUPRO16-A-12open (OL)power ground must not touch 5 V sensor reference
2EMUPRO16-A-11EMUPRO16-B-14open (OL)power ground must not touch +12 V supply
3EMUPRO16-A-20EMUPRO16-A-12open (OL)sensor ground must not touch 5 V sensor reference
4EMUPRO16-A-20EMUPRO16-B-14open (OL)sensor ground must not touch +12 V supply
5EMUPRO16-B-14EMUPRO16-A-12open (OL)+12 V supply must not touch 5 V sensor reference

Revisions

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Schematic

EMUPRO16-AEMUPRO16-BEMUPRO16-CEMUPRO16-DOEM-XSP-0VSP-14VSP-GND

Connectors

EMUPRO16-A

Mating face
EMUPRO16-A-1 · Ignition 81EMUPRO16-A-2 · Injector 12EMUPRO16-A-3 · Injector 23EMUPRO16-A-4 · Injector 34EMUPRO16-A-5 · Injector 45EMUPRO16-A-6 · Injector 56EMUPRO16-A-7 · Injector 67EMUPRO16-A-8 · Injector 78EMUPRO16-A-9 · Injector 89EMUPRO16-A-10 · Ignition 710EMUPRO16-A-11 · Power GND11EMUPRO16-A-12 · +5V source A12EMUPRO16-A-13 · Digital 213EMUPRO16-A-14 · Digital 414EMUPRO16-A-15 · Digital 815EMUPRO16-A-16 · Digital 6 (turbo)16EMUPRO16-A-17 · Power GND17EMUPRO16-A-18 · Ignition 618EMUPRO16-A-19 · Power GND19EMUPRO16-A-20 · Digital GND20EMUPRO16-A-21 · Digital 1 (crank)21EMUPRO16-A-22 · Digital 322EMUPRO16-A-23 · Digital 723EMUPRO16-A-24 · Digital 5 (turbo)24EMUPRO16-A-25 · Auxiliary 925EMUPRO16-A-26 · Ignition 526EMUPRO16-A-27 · Ignition 427EMUPRO16-A-28 · Ignition 328EMUPRO16-A-29 · Ignition 229EMUPRO16-A-30 · Ignition 130EMUPRO16-A-31 · CAN 1 high (PC comm)31EMUPRO16-A-32 · CAN 1 low (PC comm)32EMUPRO16-A-33 · CAN 2 high33EMUPRO16-A-34 · CAN 2 low34
Wire side
EMUPRO16-A-1 · Ignition 81EMUPRO16-A-2 · Injector 12EMUPRO16-A-3 · Injector 23EMUPRO16-A-4 · Injector 34EMUPRO16-A-5 · Injector 45EMUPRO16-A-6 · Injector 56EMUPRO16-A-7 · Injector 67EMUPRO16-A-8 · Injector 78EMUPRO16-A-9 · Injector 89EMUPRO16-A-10 · Ignition 710EMUPRO16-A-11 · Power GND11EMUPRO16-A-12 · +5V source A12EMUPRO16-A-13 · Digital 213EMUPRO16-A-14 · Digital 414EMUPRO16-A-15 · Digital 815EMUPRO16-A-16 · Digital 6 (turbo)16EMUPRO16-A-17 · Power GND17EMUPRO16-A-18 · Ignition 618EMUPRO16-A-19 · Power GND19EMUPRO16-A-20 · Digital GND20EMUPRO16-A-21 · Digital 1 (crank)21EMUPRO16-A-22 · Digital 322EMUPRO16-A-23 · Digital 723EMUPRO16-A-24 · Digital 5 (turbo)24EMUPRO16-A-25 · Auxiliary 925EMUPRO16-A-26 · Ignition 526EMUPRO16-A-27 · Ignition 427EMUPRO16-A-28 · Ignition 328EMUPRO16-A-29 · Ignition 229EMUPRO16-A-30 · Ignition 130EMUPRO16-A-31 · CAN 1 high (PC comm)31EMUPRO16-A-32 · CAN 1 low (PC comm)32EMUPRO16-A-33 · CAN 2 high33EMUPRO16-A-34 · CAN 2 low34
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition 8————————
2Injector 1—W33—0.5OEM-X-33———
3Injector 2—W34—0.5OEM-X-32———
4Injector 3—W35—0.5OEM-X-31———
5Injector 4—W36—0.5OEM-X-5———
6Injector 5—W37—0.5OEM-X-3———
7Injector 6—W38—0.5OEM-X-4———
8Injector 7————————
9Injector 8————————
10Ignition 7————————
11Power GND—W8—0.85SP-GND-1———
12+5V source A—W23—0.5OEM-X-59———
13Digital 2—W54—0.5OEM-X-42———
14Digital 4————————
15Digital 8————————
16Digital 6 (turbo)————————
17Power GND—W9—0.85SP-GND-1———
18Ignition 6—W32—0.5OEM-X-24———
19Power GND—W10—0.85SP-GND-1———
20Digital GND—W19—0.5SP-0V-1———
21Digital 1 (crank)—W24—0.5OEM-X-16———
22Digital 3————————
23Digital 7————————
24Digital 5 (turbo)————————
25Auxiliary 9—W48—0.5OEM-X-47———
26Ignition 5—W31—0.5OEM-X-25———
27Ignition 4—W30—0.5OEM-X-23———
28Ignition 3—W29—0.5OEM-X-52———
29Ignition 2—W28—0.5OEM-X-51———
30Ignition 1—W27—0.5OEM-X-50———
31CAN 1 high (PC comm)————————
32CAN 1 low (PC comm)————————
33CAN 2 high————————
34CAN 2 low————————

EMUPRO16-B

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Auxiliary 1 (WBO heater)—W40—0.5OEM-X-1———
2Auxiliary 2 (WBO heater)—W41—0.5OEM-X-27———
3Auxiliary 3 (WBO heater)—W42—0.5OEM-X-38———
4Auxiliary 4 (WBO heater)—W43—0.5OEM-X-2———
5Auxiliary 5—W44—0.5OEM-X-29———
6Auxiliary 6—W45—0.5OEM-X-36———
7Auxiliary 7—W46—0.5OEM-X-7———
8+12V supply—W3—0.85SP-14V-1———
9Digital GND (flash drive)—W20—0.5SP-0V-1———
10USB D- (flash drive)————————
11USB D+ (flash drive)————————
12+5V source A (flash drive)————————
13Auxiliary 8—W47—0.5OEM-X-8———
14+12V supply—W2—0.85SP-14V-1———
15+12V switched—W39—0.5OEM-X-56———
16Knock sensor 1—W25—0.5OEM-X-70———
17Knock sensor 2—W26—0.5OEM-X-69———
18WBO 2 VGND (LSU 4.9)————————
19Power GND—W11—0.85SP-GND-1———
20WBO 1 IP (LSU 4.9)————————
21WBO 1 VS (LSU 4.9)————————
22WBO 1 RCAL (LSU 4.9)————————
23WBO 1 VGND (LSU 4.9)————————
24WBO 2 IP (LSU 4.9)————————
25WBO 2 VS (LSU 4.9)————————
26WBO 2 RCAL (LSU 4.9)————————

EMUPRO16-C

Mating face
EMUPRO16-C-1 · Auxiliary 101EMUPRO16-C-2 · Auxiliary 112EMUPRO16-C-3 · Auxiliary 123EMUPRO16-C-4 · Analog 74EMUPRO16-C-5 · Analog 10 (2k2 pull)5EMUPRO16-C-6 · H-bridge 1A6EMUPRO16-C-7 · H-bridge 2B7EMUPRO16-C-8 · H-bridge 3A8EMUPRO16-C-9 · H-bridge 2A9EMUPRO16-C-10 · Analog 1 (MAP)10EMUPRO16-C-11 · Analog 311EMUPRO16-C-12 · Analog 512EMUPRO16-C-13 · Analog 813EMUPRO16-C-14 · Analog 11 (2k2 pull)14EMUPRO16-C-15 · Analog 13 (1k pull)15EMUPRO16-C-16 · Analog 15 (330R pull)16EMUPRO16-C-17 · H-bridge 3B17EMUPRO16-C-18 · Analog 218EMUPRO16-C-19 · Analog 419EMUPRO16-C-20 · Analog 620EMUPRO16-C-21 · Analog 9 (2k2 pull)21EMUPRO16-C-22 · Analog 12 (2k2 pull)22EMUPRO16-C-23 · Analog 14 (1k pull)23EMUPRO16-C-24 · Analog 16 (100R pull)24EMUPRO16-C-25 · H-bridge 1B25EMUPRO16-C-26 · LIN26EMUPRO16-C-27 · +5V source B27EMUPRO16-C-28 · +5V source B28EMUPRO16-C-29 · Analog GND29EMUPRO16-C-30 · Power GND30EMUPRO16-C-31 · Precision analog 131EMUPRO16-C-32 · Precision analog 232EMUPRO16-C-33 · Precision analog 333EMUPRO16-C-34 · Precision analog 434
Wire side
EMUPRO16-C-1 · Auxiliary 101EMUPRO16-C-2 · Auxiliary 112EMUPRO16-C-3 · Auxiliary 123EMUPRO16-C-4 · Analog 74EMUPRO16-C-5 · Analog 10 (2k2 pull)5EMUPRO16-C-6 · H-bridge 1A6EMUPRO16-C-7 · H-bridge 2B7EMUPRO16-C-8 · H-bridge 3A8EMUPRO16-C-9 · H-bridge 2A9EMUPRO16-C-10 · Analog 1 (MAP)10EMUPRO16-C-11 · Analog 311EMUPRO16-C-12 · Analog 512EMUPRO16-C-13 · Analog 813EMUPRO16-C-14 · Analog 11 (2k2 pull)14EMUPRO16-C-15 · Analog 13 (1k pull)15EMUPRO16-C-16 · Analog 15 (330R pull)16EMUPRO16-C-17 · H-bridge 3B17EMUPRO16-C-18 · Analog 218EMUPRO16-C-19 · Analog 419EMUPRO16-C-20 · Analog 620EMUPRO16-C-21 · Analog 9 (2k2 pull)21EMUPRO16-C-22 · Analog 12 (2k2 pull)22EMUPRO16-C-23 · Analog 14 (1k pull)23EMUPRO16-C-24 · Analog 16 (100R pull)24EMUPRO16-C-25 · H-bridge 1B25EMUPRO16-C-26 · LIN26EMUPRO16-C-27 · +5V source B27EMUPRO16-C-28 · +5V source B28EMUPRO16-C-29 · Analog GND29EMUPRO16-C-30 · Power GND30EMUPRO16-C-31 · Precision analog 131EMUPRO16-C-32 · Precision analog 232EMUPRO16-C-33 · Precision analog 333EMUPRO16-C-34 · Precision analog 434
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Auxiliary 10————————
2Auxiliary 11————————
3Auxiliary 12————————
4Analog 7————————
5Analog 10 (2k2 pull)————————
6H-bridge 1A————————
7H-bridge 2B————————
8H-bridge 3A————————
9H-bridge 2A————————
10Analog 1 (MAP)————————
11Analog 3—W52—0.5OEM-X-78———
12Analog 5————————
13Analog 8————————
14Analog 11 (2k2 pull)————————
15Analog 13 (1k pull)————————
16Analog 15 (330R pull)————————
17H-bridge 3B————————
18Analog 2—W50—0.5OEM-X-73———
19Analog 4————————
20Analog 6————————
21Analog 9 (2k2 pull)————————
22Analog 12 (2k2 pull)————————
23Analog 14 (1k pull)————————
24Analog 16 (100R pull)————————
25H-bridge 1B————————
26LIN————————
27+5V source B————————
28+5V source B————————
29Analog GND—W21—0.5SP-0V-1———
30Power GND—W12—0.85SP-GND-1———
31Precision analog 1—W49—0.5OEM-X-41———
32Precision analog 2—W51—0.5OEM-X-13———
33Precision analog 3—W53—0.5OEM-X-77———
34Precision analog 4————————

EMUPRO16-D

Mating face
EMUPRO16-D-1 · Injector 101EMUPRO16-D-2 · Injector 112EMUPRO16-D-3 · Injector 123EMUPRO16-D-4 · Injector 134EMUPRO16-D-5 · Injector 145EMUPRO16-D-6 · Injector 156EMUPRO16-D-7 · Injector 167EMUPRO16-D-8 · Injector 98EMUPRO16-D-9 · Analog 179EMUPRO16-D-10 · Analog 1810EMUPRO16-D-11 · Digital 9 / Analog 1911EMUPRO16-D-12 · Digital 10 / Analog 2012EMUPRO16-D-13 · Auxiliary 1313EMUPRO16-D-14 · H-bridge 4A14EMUPRO16-D-15 · Precision analog 615EMUPRO16-D-16 · Precision analog 816EMUPRO16-D-17 · Analog GND17EMUPRO16-D-18 · Power GND18EMUPRO16-D-19 · Auxiliary 1419EMUPRO16-D-20 · H-bridge 4B20EMUPRO16-D-21 · Precision analog 521EMUPRO16-D-22 · Precision analog 722EMUPRO16-D-23 · Ignition 923EMUPRO16-D-24 · Ignition 1024EMUPRO16-D-25 · Auxiliary 1625EMUPRO16-D-26 · Auxiliary 1526
Wire side
EMUPRO16-D-1 · Injector 101EMUPRO16-D-2 · Injector 112EMUPRO16-D-3 · Injector 123EMUPRO16-D-4 · Injector 134EMUPRO16-D-5 · Injector 145EMUPRO16-D-6 · Injector 156EMUPRO16-D-7 · Injector 167EMUPRO16-D-8 · Injector 98EMUPRO16-D-9 · Analog 179EMUPRO16-D-10 · Analog 1810EMUPRO16-D-11 · Digital 9 / Analog 1911EMUPRO16-D-12 · Digital 10 / Analog 2012EMUPRO16-D-13 · Auxiliary 1313EMUPRO16-D-14 · H-bridge 4A14EMUPRO16-D-15 · Precision analog 615EMUPRO16-D-16 · Precision analog 816EMUPRO16-D-17 · Analog GND17EMUPRO16-D-18 · Power GND18EMUPRO16-D-19 · Auxiliary 1419EMUPRO16-D-20 · H-bridge 4B20EMUPRO16-D-21 · Precision analog 521EMUPRO16-D-22 · Precision analog 722EMUPRO16-D-23 · Ignition 923EMUPRO16-D-24 · Ignition 1024EMUPRO16-D-25 · Auxiliary 1625EMUPRO16-D-26 · Auxiliary 1526
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 10————————
2Injector 11————————
3Injector 12————————
4Injector 13————————
5Injector 14————————
6Injector 15————————
7Injector 16————————
8Injector 9————————
9Analog 17————————
10Analog 18————————
11Digital 9 / Analog 19————————
12Digital 10 / Analog 20————————
13Auxiliary 13————————
14H-bridge 4A————————
15Precision analog 6————————
16Precision analog 8————————
17Analog GND—W22—0.5SP-0V-1———
18Power GND—W13—0.85SP-GND-1———
19Auxiliary 14————————
20H-bridge 4B————————
21Precision analog 5————————
22Precision analog 7————————
23Ignition 9————————
24Ignition 10————————
25Auxiliary 16————————
26Auxiliary 15————————

OEM-X

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Fuel pump relay control—W40—0.5EMUPRO16-B-1———
13O2 sensor signal—W51—0.5EMUPRO16-C-32———
15Ground—W4—0.85SP-GND-1———
16Crank position sensor (+)—W24—0.5EMUPRO16-A-21———
17Camshaft position sensor (Hall)————————
2Idle speed control valve (close winding)—W43—0.5EMUPRO16-B-4———
23Ignition coil cylinder 4—W30—0.5EMUPRO16-A-27———
24Ignition coil cylinder 6—W32—0.5EMUPRO16-A-18———
25Ignition coil cylinder 5—W31—0.5EMUPRO16-A-26———
26Battery voltage (constant +12V)————————
27Main relay control—W41—0.5EMUPRO16-B-2———
28Ground (electronics + sensor shielding)—W14—0.5SP-0V-1———
29Idle speed control valve (open winding)—W44—0.5EMUPRO16-B-5———
3Injector cylinder 5—W37—0.5EMUPRO16-A-6———
31Injector cylinder 3—W35—0.5EMUPRO16-A-4———
32Injector cylinder 2—W34—0.5EMUPRO16-A-3———
33Injector cylinder 1—W33—0.5EMUPRO16-A-2———
34Ground (output stages)—W5—0.85SP-GND-1———
36Evap purge solenoid—W45—0.5EMUPRO16-B-6———
38O2 sensor heater relay control—W42—0.5EMUPRO16-B-3———
4Injector cylinder 6—W38—0.5EMUPRO16-A-7———
40O2 sensor signal ground—W15—0.5SP-0V-1———
41Mass air flow (MAF) signal—W49—0.5EMUPRO16-C-31———
42Vehicle speed signal—W54—0.5EMUPRO16-A-13———
43Crank position sensor (-)—W16—0.5SP-0V-1———
44Sensor ground (IAT/ECT/TPS)—W17—0.5SP-0V-1———
45Shield ground————————
47Tachometer output—W48—0.5EMUPRO16-A-25———
5Injector cylinder 4—W36—0.5EMUPRO16-A-5———
50Ignition coil cylinder 1—W27—0.5EMUPRO16-A-30———
51Ignition coil cylinder 2—W28—0.5EMUPRO16-A-29———
52Ignition coil cylinder 3—W29—0.5EMUPRO16-A-28———
54ECU power (+14V from main relay)—W1—0.85SP-14V-1———
55Ground (ignition)—W6—0.85SP-GND-1———
56Ignition switch (terminal 15)—W39—0.5EMUPRO16-B-15———
59+5V sensor supply—W23—0.5EMUPRO16-A-12———
6Ground (injector output stages)—W7—0.85SP-GND-1———
69Knock sensor cylinders 4-6—W26—0.5EMUPRO16-B-17———
7VANOS intake camshaft solenoid—W46—0.5EMUPRO16-B-7———
70Knock sensor cylinders 1-3—W25—0.5EMUPRO16-B-16———
71Knock sensor ground/shield—W18—0.5SP-0V-1———
73Throttle position (TPS)—W50—0.5EMUPRO16-C-18———
77Intake air temperature (IAT)—W53—0.5EMUPRO16-C-33———
78Engine coolant temperature (ECT)—W52—0.5EMUPRO16-C-11———
8Check engine light (MIL)—W47—0.5EMUPRO16-B-13———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W14—0.5OEM-X-28———
1——W15—0.5OEM-X-40———
1——W16—0.5OEM-X-43———
1——W17—0.5OEM-X-44———
1——W18—0.5OEM-X-71———
1——W19—0.5EMUPRO16-A-20———
1——W20—0.5EMUPRO16-B-9———
1——W21—0.5EMUPRO16-C-29———
1——W22—0.5EMUPRO16-D-17———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-X-54———
1——W2—0.85EMUPRO16-B-14———
1——W3—0.85EMUPRO16-B-8———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W4—0.85OEM-X-15———
1——W5—0.85OEM-X-34———
1——W6—0.85OEM-X-55———
1——W7—0.85OEM-X-6———
1——W8—0.85EMUPRO16-A-11———
1——W9—0.85EMUPRO16-A-17———
1——W10—0.85EMUPRO16-A-19———
1——W11—0.85EMUPRO16-B-19———
1——W12—0.85EMUPRO16-C-30———
1——W13—0.85EMUPRO16-D-18———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-X-1Fuel pump relay controllow_side_outEMUPRO16-B-1Auxiliary 1 (WBO heater)low_side_outcorroborated
OEM-X-13O2 sensor signallambda_nb_inEMUPRO16-C-32Precision analog 2analog_incorroborated
OEM-X-15GroundgroundEMUPRO16-A-11 + EMUPRO16-A-17 + EMUPRO16-A-19 + EMUPRO16-B-19 + EMUPRO16-C-30 + EMUPRO16-D-18Power GND + Power GND + Power GND + Power GND + Power GND + Power GNDgroundcorroborated
OEM-X-16Crank position sensor (+)trigger_inEMUPRO16-A-21Digital 1 (crank)trigger_incorroborated
OEM-X-17Camshaft position sensor (Hall)trigger_in———corroborated
OEM-X-2Idle speed control valve (close winding)low_side_outEMUPRO16-B-4Auxiliary 4 (WBO heater)low_side_outcorroborated
OEM-X-23Ignition coil cylinder 4ignition_outEMUPRO16-A-27Ignition 4ignition_outcorroborated
OEM-X-24Ignition coil cylinder 6ignition_outEMUPRO16-A-18Ignition 6ignition_outcorroborated
OEM-X-25Ignition coil cylinder 5ignition_outEMUPRO16-A-26Ignition 5ignition_outcorroborated
OEM-X-26Battery voltage (constant +12V)power_in———corroborated
OEM-X-27Main relay controllow_side_outEMUPRO16-B-2Auxiliary 2 (WBO heater)low_side_outcorroborated
OEM-X-28Ground (electronics + sensor shielding)sensor_groundEMUPRO16-A-20 + EMUPRO16-B-9 + EMUPRO16-C-29 + EMUPRO16-D-17Digital GND + Digital GND (flash drive) + Analog GND + Analog GNDsensor_groundcorroborated
OEM-X-29Idle speed control valve (open winding)low_side_outEMUPRO16-B-5Auxiliary 5low_side_outcorroborated
OEM-X-3Injector cylinder 5injector_outEMUPRO16-A-6Injector 5injector_outcorroborated
OEM-X-31Injector cylinder 3injector_outEMUPRO16-A-4Injector 3injector_outcorroborated
OEM-X-32Injector cylinder 2injector_outEMUPRO16-A-3Injector 2injector_outcorroborated
OEM-X-33Injector cylinder 1injector_outEMUPRO16-A-2Injector 1injector_outcorroborated
OEM-X-34Ground (output stages)groundEMUPRO16-A-11 + EMUPRO16-A-17 + EMUPRO16-A-19 + EMUPRO16-B-19 + EMUPRO16-C-30 + EMUPRO16-D-18Power GND + Power GND + Power GND + Power GND + Power GND + Power GNDgroundcorroborated
OEM-X-36Evap purge solenoidlow_side_outEMUPRO16-B-6Auxiliary 6low_side_outcorroborated
OEM-X-38O2 sensor heater relay controllow_side_outEMUPRO16-B-3Auxiliary 3 (WBO heater)low_side_outcorroborated
OEM-X-4Injector cylinder 6injector_outEMUPRO16-A-7Injector 6injector_outcorroborated
OEM-X-40O2 sensor signal groundsensor_groundEMUPRO16-A-20 + EMUPRO16-B-9 + EMUPRO16-C-29 + EMUPRO16-D-17Digital GND + Digital GND (flash drive) + Analog GND + Analog GNDsensor_groundcorroborated
OEM-X-41Mass air flow (MAF) signalanalog_inEMUPRO16-C-31Precision analog 1analog_incorroborated
OEM-X-42Vehicle speed signaldigital_inEMUPRO16-A-13Digital 2digital_incorroborated
OEM-X-43Crank position sensor (-)sensor_groundEMUPRO16-A-20 + EMUPRO16-B-9 + EMUPRO16-C-29 + EMUPRO16-D-17Digital GND + Digital GND (flash drive) + Analog GND + Analog GNDsensor_groundcorroborated
OEM-X-44Sensor ground (IAT/ECT/TPS)sensor_groundEMUPRO16-A-20 + EMUPRO16-B-9 + EMUPRO16-C-29 + EMUPRO16-D-17Digital GND + Digital GND (flash drive) + Analog GND + Analog GNDsensor_groundcorroborated
OEM-X-45Shield groundshield———corroborated
OEM-X-47Tachometer outputtacho_outEMUPRO16-A-25Auxiliary 9low_side_outcorroborated
OEM-X-5Injector cylinder 4injector_outEMUPRO16-A-5Injector 4injector_outcorroborated
OEM-X-50Ignition coil cylinder 1ignition_outEMUPRO16-A-30Ignition 1ignition_outcorroborated
OEM-X-51Ignition coil cylinder 2ignition_outEMUPRO16-A-29Ignition 2ignition_outcorroborated
OEM-X-52Ignition coil cylinder 3ignition_outEMUPRO16-A-28Ignition 3ignition_outcorroborated
OEM-X-54ECU power (+14V from main relay)power_inEMUPRO16-B-14 + EMUPRO16-B-8+12V supply + +12V supplypower_incorroborated
OEM-X-55Ground (ignition)groundEMUPRO16-A-11 + EMUPRO16-A-17 + EMUPRO16-A-19 + EMUPRO16-B-19 + EMUPRO16-C-30 + EMUPRO16-D-18Power GND + Power GND + Power GND + Power GND + Power GND + Power GNDgroundcorroborated
OEM-X-56Ignition switch (terminal 15)digital_inEMUPRO16-B-15+12V switcheddigital_incorroborated
OEM-X-59+5V sensor supplyvrefEMUPRO16-A-12+5V source Avrefcorroborated
OEM-X-6Ground (injector output stages)groundEMUPRO16-A-11 + EMUPRO16-A-17 + EMUPRO16-A-19 + EMUPRO16-B-19 + EMUPRO16-C-30 + EMUPRO16-D-18Power GND + Power GND + Power GND + Power GND + Power GND + Power GNDgroundcorroborated
OEM-X-69Knock sensor cylinders 4-6knock_inEMUPRO16-B-17Knock sensor 2knock_incorroborated
OEM-X-7VANOS intake camshaft solenoidlow_side_outEMUPRO16-B-7Auxiliary 7low_side_outcorroborated
OEM-X-70Knock sensor cylinders 1-3knock_inEMUPRO16-B-16Knock sensor 1knock_incorroborated
OEM-X-71Knock sensor ground/shieldsensor_groundEMUPRO16-A-20 + EMUPRO16-B-9 + EMUPRO16-C-29 + EMUPRO16-D-17Digital GND + Digital GND (flash drive) + Analog GND + Analog GNDsensor_groundcorroborated
OEM-X-73Throttle position (TPS)analog_inEMUPRO16-C-18Analog 2analog_incorroborated
OEM-X-77Intake air temperature (IAT)temp_inEMUPRO16-C-33Precision analog 3analog_incorroborated
OEM-X-78Engine coolant temperature (ECT)temp_inEMUPRO16-C-11Analog 3analog_incorroborated
OEM-X-8Check engine light (MIL)low_side_outEMUPRO16-B-13Auxiliary 8low_side_outcorroborated

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-X-54SP-14V-10.85no routeECU power (+14V from main relay)—
W2SP-14V-1EMUPRO16-B-140.85no route+12V supply—
W3SP-14V-1EMUPRO16-B-80.85no route+12V supply—
W4OEM-X-15SP-GND-10.85no routeGround—
W5OEM-X-34SP-GND-10.85no routeGround (output stages)—
W6OEM-X-55SP-GND-10.85no routeGround (ignition)—
W7OEM-X-6SP-GND-10.85no routeGround (injector output stages)—
W8SP-GND-1EMUPRO16-A-110.85no routePower GND—
W9SP-GND-1EMUPRO16-A-170.85no routePower GND—
W10SP-GND-1EMUPRO16-A-190.85no routePower GND—
W11SP-GND-1EMUPRO16-B-190.85no routePower GND—
W12SP-GND-1EMUPRO16-C-300.85no routePower GND—
W13SP-GND-1EMUPRO16-D-180.85no routePower GND—
W14OEM-X-28SP-0V-10.5no routeGround (electronics + sensor shielding)—
W15OEM-X-40SP-0V-10.5no routeO2 sensor signal ground—
W16OEM-X-43SP-0V-10.5no routeCrank position sensor (-)—
W17OEM-X-44SP-0V-10.5no routeSensor ground (IAT/ECT/TPS)—
W18OEM-X-71SP-0V-10.5no routeKnock sensor ground/shield—
W19SP-0V-1EMUPRO16-A-200.5no routeDigital GND—
W20SP-0V-1EMUPRO16-B-90.5no routeDigital GND (flash drive)—
W21SP-0V-1EMUPRO16-C-290.5no routeAnalog GND—
W22SP-0V-1EMUPRO16-D-170.5no routeAnalog GND—
W23OEM-X-59EMUPRO16-A-120.5no route+5V sensor supply—
W24OEM-X-16EMUPRO16-A-210.5no routeCrank position sensor (+)—
W25OEM-X-70EMUPRO16-B-160.5no routeKnock sensor cylinders 1-3—
W26OEM-X-69EMUPRO16-B-170.5no routeKnock sensor cylinders 4-6—
W27OEM-X-50EMUPRO16-A-300.5no routeIgnition coil cylinder 1—
W28OEM-X-51EMUPRO16-A-290.5no routeIgnition coil cylinder 2—
W29OEM-X-52EMUPRO16-A-280.5no routeIgnition coil cylinder 3—
W30OEM-X-23EMUPRO16-A-270.5no routeIgnition coil cylinder 4—
W31OEM-X-25EMUPRO16-A-260.5no routeIgnition coil cylinder 5—
W32OEM-X-24EMUPRO16-A-180.5no routeIgnition coil cylinder 6—
W33OEM-X-33EMUPRO16-A-20.5no routeInjector cylinder 1—
W34OEM-X-32EMUPRO16-A-30.5no routeInjector cylinder 2—
W35OEM-X-31EMUPRO16-A-40.5no routeInjector cylinder 3—
W36OEM-X-5EMUPRO16-A-50.5no routeInjector cylinder 4—
W37OEM-X-3EMUPRO16-A-60.5no routeInjector cylinder 5—
W38OEM-X-4EMUPRO16-A-70.5no routeInjector cylinder 6—
W39OEM-X-56EMUPRO16-B-150.5no routeIgnition switch (terminal 15)—
W40OEM-X-1EMUPRO16-B-10.5no routeFuel pump relay control—
W41OEM-X-27EMUPRO16-B-20.5no routeMain relay control—
W42OEM-X-38EMUPRO16-B-30.5no routeO2 sensor heater relay control—
W43OEM-X-2EMUPRO16-B-40.5no routeIdle speed control valve (close winding)—
W44OEM-X-29EMUPRO16-B-50.5no routeIdle speed control valve (open winding)—
W45OEM-X-36EMUPRO16-B-60.5no routeEvap purge solenoid—
W46OEM-X-7EMUPRO16-B-70.5no routeVANOS intake camshaft solenoid—
W47OEM-X-8EMUPRO16-B-130.5no routeCheck engine light (MIL)—
W48OEM-X-47EMUPRO16-A-250.5no routeTachometer output—
W49OEM-X-41EMUPRO16-C-310.5no routeMass air flow (MAF) signal—
W50OEM-X-73EMUPRO16-C-180.5no routeThrottle position (TPS)—
W51OEM-X-13EMUPRO16-C-320.5no routeO2 sensor signal—
W52OEM-X-78EMUPRO16-C-110.5no routeEngine coolant temperature (ECT)—
W53OEM-X-77EMUPRO16-C-330.5no routeIntake air temperature (IAT)—
W54OEM-X-42EMUPRO16-A-130.5no routeVehicle speed signal—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector1473416-1TESuperseal 1.0 26-way plug, Key 31.000ea
connector3-1437290-7TESuperseal 1.0 26-way plug1.000ea
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 11.000ea
connector4-1437290-1TESuperseal 1.0 34-way plug, Key 21.000ea
connectorBMW-E36-DME-CONNBMWE36 DME (M3.1/M3.3.1) harness connector1.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)44.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (5)

SeverityCodeSubjectMessage
errorREQUIRED_UNMAPPEDOEM-X-17Required OEM function "Camshaft position sensor (Hall)" (trigger_in) is not connected to the new ECU.
infoNET_FAMILYOEM-X-47 ↔ EMUPRO16-A-25OEM-X-47 "Tachometer output" [tacho_out] is wired to EMUPRO16-A-25 "Auxiliary 9" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up.
infoNET_FAMILYOEM-X-77 ↔ EMUPRO16-C-33OEM-X-77 "Intake air temperature (IAT)" [temp_in] is wired to EMUPRO16-C-33 "Precision analog 3" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-X-78 ↔ EMUPRO16-C-11OEM-X-78 "Engine coolant temperature (ECT)" [temp_in] is wired to EMUPRO16-C-11 "Analog 3" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoUNMAPPEDOEM1 optional OEM pins are not mapped: OEM-X-45 Shield ground

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-X-26Battery-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 2026-10-06. Review every wire against both manuals before building. Open items: - OEM-X 17: Camshaft position sensor (Hall): no free cam_hall/cam_vr/frequency_in input on ECUMASTER EMU PRO 16 Not wired: - OEM-X 26: Battery voltage (constant +12V): ECUMASTER EMU PRO 16 has no battery-constant input; not needed - OEM-X 45: Shield ground: no shield pin on ECUMASTER EMU PRO 16

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docECUMASTER EMU PRO 16 — pinout (Connectors A/B/C/D)https://www.ecumaster.com/files/EMU_PRO/EMU_PRO_16_Pinout_v1.0.pdfarchive2026-10-0572799bed63fb
4vendor_docLink BMWLink E36X (G4X) plug-in install manualhttps://linkecu.com/documentation/E36X.pdfarchive2026-10-05010cda3acd08
2community_copybimmer-service: Bosch Motronic M3.3.1 pinout (E36 M50)https://www.bimmer-service.com/2025/11/17/bosch-motronic-m3-3-1-pinout-wiring-diagram/———