宝马汽车发动机电脑编程步骤DME Control Module Programming
DME Control Module Programming
DME programming is used to change a "basic control unit" into a "programed control unit" by writing operating instructions onto a blank EPROM.
Programming is also used to update an existing DME program by writing additional instructions that compliment the existing software.
Programming is used on DME M3.X variants.
Storage of Programming Data
In it's unprogrammed basic state, the EPROM only contains "resident data". The resident data provides control module/EPROM identification to the
programming software prior to programming.
When programmed, the EPROM is filled with the required characteristic maps (ignition timing, injection etc), control module constants,
Identification data, etc.
When is programming necessary?
Programming an engine control module is necessary when:
- Installing a replacement basic control module
- Recall or Service Action campaign: This falls into one of the following categories:
- Program update to existing program
- Complete programming procedure after EPROM replacement.
Programming a replacement basic control module
Control modules are received from the parts department in the basic state (EPROM loaded only with resident data). These control modules require
programming using the DIS/MoDiC and the latest programming software.
Programming Update
Updates are referred to as "Customer Service Measures" in the programming software. The existing program in the control module is amended with
an updated program. This new data changes various operations of the existing control programming. Program updates write the new data in a
reserved section of the EPROM. The location of the old data is overwritten with instructions for the DME to search the reserved section in the
EPROM when the function is required.
Because of limited space on the EPROM, program updating can only be done one time.
The DIS/MoDiC will display the message "Measure not applicable to the control module version" if update has already been done or the DME is
factory updated
Vehicle: Testing and Inspection
EPROM Replacement and Programming
EPROM Replacement and Programming
Larger updates have too many changes to fit in the update portion of the EPROM. An update with this many changes requires an EPROM
replacement and reprogramming procedure.
The EPROM is removed and replaced with a new basic state EPROM. The latest software is programmed into the new EPROM providing a data
set that has the latest available software.
Vehicle: Testing and Inspection
Control Module Identification
Control Module Identification
It is important to know how to properly identify DME control modules prior to programming. The control modules are identified by:
- BMW Part number
- BMW Hardware number
- Bosch Hardware number
These numbers are displayed in the following locations:
- Control module ID label.
- Control module ID display using the Diagnostic program.
Part Number Basic Control Module
This number refers to the part number of the control unit without any data status.
Part Number Programmed Control Module
This number refers to the part number of a factory programmed module that includes the data status.
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