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Ground, Power & Input/Output Circuits

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1999 BMW Z3, 1999 BMW M3, 1999 BMW M Roadster, 1999 BMW M Coupe, and 1999 BMW 740iL. However, it is still accessible from the selected car via links, so may be relevant.

Testing information is not available from manufacturer. See WIRING DIAGRAMS article to identify DME/Motronic control unit ground circuits, power circuits and input/output circuits. See Fig 1-Fig 5 . See DME PCM CONTROL UNIT LOCATION  table.

Fig 1: Identifying PCM 88-Pin Connector (E36)
G98J11311Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Identifying PCM 9-Pin Connector (E46)
G99I05493Courtesy of BMW OF NORTH AMERICA, INC.
Fig 3: Identifying PCM 24-Pin Connector (E46)
G99A05494Courtesy of BMW OF NORTH AMERICA, INC.
Fig 4: Identifying PCM 52-Pin Connector (E46)
G99D05495Courtesy of BMW OF NORTH AMERICA, INC.
Fig 5: Identifying PCM 40-Pin Connector (E46)
G99F05496Courtesy of BMW OF NORTH AMERICA, INC.
DME PCM CONTROL UNIT LOCATION

Application Location
3-Series
E36 Behind Cover On Right Rear Corner Of Firewall
E46 Inside Box On Left Rear Corner Of Engine Compartment
All Others Inside Box On Right Rear Corner Of Engine Compartment, Behind Strut Tower