BMW Motronic M5.2 Pinout Diagram – Specifications and Diagnostics for V8/V12. Comprehensive documentation on the pinout of the DME key module, which marked the transition to more complex electronics. Get access to:
- Complete wiring diagrams for the M62 and M73 engines for troubleshooting intermittent faults.
- Detailed pinout table for all input/output signals, including VANOS sensors (on the M62).
- Power and ground locations for all 55-pin connectors.
- Wiring diagrams for the EML (electronic throttle body), EWS (immobilizer), and MAF (mass air flow meter).
- Communication diagrams with other control units (automatic transmission, EML, EWS).
Ideal for diagnosing wiring problems related to oil leaks and aging on BMW E38 (7-Series) and E39 (5-Series) models.
DME Bosch M5.2 Pinout. (M62) Schematis Diagram
8-Cylinder M62 Engine. Ignation Coils, Oxygen Sensors, Catalytic Converter, Sensors
DME Bosch M5.2 Pinout. (M73) Schematis Diagram
12-Cylinder M73 Engine. Power, Control Modules, Air pump, Fuel pump
DME Bosch M5.2 Pinout. (M44) Schematis Diagram
Bosch M5.2 BMW Z3 1997. M44 Engine
DME Bosch M5.2 Pinout. (M44) Schematis Diagram
Bosch M5.2 BMW 3 318ti E36/5 1999. M44 Engine
DME Bosch Motronic M5.2 M62 Pinout
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E = Input
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A = Output
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M = Ground
- X6000
| Pin | Type | Description/Function | Connection |
| 1 | M | Ground, oxygen sensor heating | Oxygen sensors behind catalytic converter |
| 2 | A | Air control valve closed | Idle speed control valve, Y6130 |
| 3 | A | Cyl. 1 fuel injection valve | Cyl. 1 fuel injection valve, Y6101 |
| 4 | A | Cyl. 4 fuel injection valve | Cyl. 4 fuel injection valve, Y6104 |
| 5 | A | Cyl. 6 fuel injection valve | Cyl. 6 fuel injection valve, Y6106 |
| 6 | M | Ground | Ground point, X6452 |
| 7 | A | Cyl. 7 fuel injection valve | Cyl. 7 fuel injection valve, Y6107 |
| 8 | A | "CHECK ENGINE"-lamp | Instrument cluster, A2 |
| 9 | Not used | ||
| 10 | E | Drive-away protection | Control module (EWS II), A836 |
| 11 | E | Signal AC-compressor | Pressure switch, B8y |
| 12 | Not used | ||
| 13 | E | Signal cyl. 5-6 knock sensor | Cyl. 5-6 knock sensor, B6243 |
| 14 | Not used | ||
| 15 | Not used | ||
| 16 | E | Signal intake air temperature | Intake air temperature sensor, B6215A |
| 17 | E | Signal air mass meter | Hot film air mass meter, B6217 |
| 18 | E | Signal cyl. 5-8 oxygen sensor | Oxygen sensor II in front of catalytic converter |
| 19 | E | Signal cyl. 1-4 oxygen sensor | Oxygen sensor I in front of catalytic converter |
| 20 | M | Sensorground | Crankshaft position/RPM sensor |
| 21 | E | Signal camshaft position | Hall effect camshaft sensor I |
| 22 | A | Cyl. 6 ignition signal | Cyl. 6 ignition coil, T6156 |
| 23 | A | Cyl. 3 ignition signal | Cyl. 3 ignition coil, T6153 |
| 24 | A | Cyl. 7 ignition signal | Cyl. 7 ignition coil, T6157 |
| 25 | A | Cyl. 2 ignition signal | Cyl. 2 ignition coil, T6152 |
| 26 | E | Continuous plus supply terminal 30 | B+ junction box |
| 27 | A | Signal to engine control module relay | Engine control module relay, K6300 |
| 28 | M | Ground | Ground point, X6452 |
| 29 | A | Air control valve open | Idle speed control valve, Y6130 |
| Pin | Type | Description/Function | Connection |
| 30 | M | Ground, oxygen sensor heating | Oxygen sensors in front of catalytic converter |
| 31 | A | Cyl. 5 fuel injection valve | Cyl. 5 fuel injection valve, Y6105 |
| 32 | A | Cyl. 8 fuel injection valve | Cyl. 8 fuel injection valve, Y6108 |
| 33 | A | Cyl. 3 fuel injection valve | Cyl. 3 fuel injection valve, Y6103 |
| 34 | M | Ground | Ground point, X6452 |
| 35 | A | Cyl. 2 fuel injection valve | Cyl. 2 fuel injection valve, Y6102 |
| 36 | A | Signal climate compressor | Compressor control relay, K19 |
| 37 | Not used | ||
| 38 | Not used | ||
| 39 | E | Signal cyl. 3-4 knock sensor | Cyl. 3-4 knock sensor, B6242 |
| 40 | E | Signal cyl. 7-8 knock sensor | Cyl. 7-8 knock sensor, B6244 |
| 41 | E | Signal fuel reserve | Instrument cluster, A2w |
| 42 | Not used | ||
| 43 | E | Signal throttle position | Throttle position sensor, R6252 |
| 44 | M | Ground, air mass meter | Hot film air mass meter, B6217 |
| 45 | M | Ground, oxygen sensors | Oxygen sensors |
| 446 | Not used | ||
| 47 | Not used | ||
| 48 | A | Cyl. 1 ignition coil | Cyl. 1 ignition coil, T6151 |
| 49 | A | Cyl. 5 ignition signal | Cyl. 5 ignition signal, T6155 |
| 50 | A | Cyl. 4 ignition signal | Cyl. 4 ignition signal, T6154 |
| 51 | A | Cyl. 8 ignition signal | Cyl. 8 ignition signal, T6158 |
| 52 | A | Cyl. 6 ignition signal | Cyl. 6 ignition signal, T6156 |
| 53 | A | Plus supply (+5V) | Throttle position sensor, R6252 |
| 54 | E | Signal engine control module relay | Engine control module relay, K6300 |
| 55 | M | Ground | Ground point, X6452 |
| 56 | E | Plus supply terminal 15 | Ignition switch, S2 |
| 57 | Not used | ||
| 58 | Not used | ||
| 59 | Not used | ||
| 60 | E | Programming voltage | Data link connector, D100 |
| Pin | Type | Description/Function | Connection |
| 61 | A | Signal evaporative emission | Evaporative emission valve, Y6120 |
| 62 | Not used | ||
| 63 | A | Signal fuel pump | Fuel pump relay, K6301w |
| 64 | Not used | ||
| 65 | Not used | ||
| 66 | Not used | ||
| 67 | Not used | ||
| 68 | Not used | ||
| 69 | E | Signal AC on/off | Air conditioning relay |
| 70 | E | Signal cyl. 1-2 knock sensor | Cyl. 1-2 knock sensor, B6241 |
| 71 | M | Ground, sensors | Knock/temperature/throttle position sensors |
| 72 | Not used | ||
| 73 | Not used | ||
| 74 | E | Engine temperature | Dual temperature sensor |
| 75 | Not used | ||
| 76 | E | Signal cyl. 5-8 oxygen sensor | Oxygen sensor II behind catalytic converter |
| 77 | E | Signal cyl. 1-4 oxygen sensor | Oxygen sensor I behind catalytic converter |
| 78 | E | Signal crankshaft position/RPM | Crankshaft position/RPM sensor |
| 79 | E | Signal right rear wheel speed | Slip control module |
| 80 | A | Signal engine speed (RPM) | Instrument cluster, A2w |
| 81 | Not used | ||
| 82 | Not used | ||
| 83 | A | Signal fuel consumption | Body electronics module |
| 84 | Not used | ||
| 85 | E/A | CAN-L | Transmission control module/Slip control module |
| 86 | E/A | CAN-H | Transmission control module/Slip control module |
| 87 | A | Diagnosis | Data link connector, RxD |
| 88 | E/A | Diagnosis | Data link connector, TxD |
BMW DME Bosch Motronic M5.2 Catalog
| BMW Model / Chassis | Engine Code | Production Years / Period | DME Part Number (Bosch) | DME Version |
| 318i/is/Ti E36 | M44/B19 | 96 to .. | 0 261 203 667 | Bosch Motronic M5.2 (OBD-II) |
| Z3 E36 | M44/B19 | 96 to ... | 0 261 203 667 | Bosch Motronic M5.2 (OBD-II) |
| 540i E39 | M62/B44 | 96 to ... | 0 261 203 474 | Bosch Motronic M5.2 (OBD-II) |
| 740i/iL E38 | M62/B44 | 96 to ... | 0 261 203 474 | Bosch Motronic M5.2 (OBD-II) |
| 750i/iL E38 | M73/B54 | 9/94 to ... | 0 261 203 473 | Bosch Motronic M5.2 (OBD-II) |
| 840i E31 | M62/B44 | 96 to ... | 0 261 203 474 | Bosch Motronic M5.2 (OBD-II) |
| 850i E31 | M73/B54 | 9/94 to 8/96 | — | Bosch Motronic M5.2 (OBD-II) |