Ground, Power & Input/Output Circuits

See PIN VOLTAGE CHARTS article to identify DME control unit ground circuits, power circuits and input/output circuits. To identify DME/ECM connector terminals, see Fig 1-Fig 4 . See DME CONTROL UNIT LOCATION table.

Fig 1: Identifying DME/ECM 88-Pin Connector (Z3 Only)

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Identifying DME/ECM 9-Pin Connector

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Fig 3: Identifying DME/ECM 24-Pin Connector

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Fig 4: Identifying DME/ECM 40-Pin Connector

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Fig 5: Identifying DME/ECM 52-Pin Connector

Courtesy of BMW OF NORTH AMERICA, INC.

DME CONTROL UNIT LOCATION

Application

Location

3-Series

In Right Rear Side Of Engine Compartment

All Others

Inside Box On Left Rear Corner Of Engine Compartment

All Others ⁽¹⁾

Inside Box On Right Rear Corner Of Engine Compartment, Behind Strut Tower

⁽¹⁾	V12 engine utilizes 2 ECM units in electronic box.