Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSSERVICE TESTER - REVISED AND EXPANDED SOFTWAREIMPORTANT PROGRAM ADDITIONS
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Important Program Additions
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Important Program Additions
In the past three years, the number of diagnostic-capable control units has increased from six to thirty, making a reorganization of diagnostics necessary.
To facilitate this, BMW has made all new programs (starting with this version) consistent in the following areas:
- CONSTRUCTION
- PROGRAM FEATURES
- HEADINGS
Refer to the following example:
All changes in the diagnostic programs pertain only to new programs. Existing programs are unchanged.
Note: The format of the diagnosing program is selected by the tester according to the identification of the control unit being diagnosed. For example, different test plans are selected for DME M1.1 and M1.3. The new format incorporated into Version 8.0 will only be used when a control unit is encountered that uses a new diagnosing program.
The following pages will highlight the important features of the new format.
To facilitate this, BMW has made all new programs (starting with this version) consistent in the following areas:
- CONSTRUCTION
- PROGRAM FEATURES
- HEADINGS
Refer to the following example:
All changes in the diagnostic programs pertain only to new programs. Existing programs are unchanged.
Note: The format of the diagnosing program is selected by the tester according to the identification of the control unit being diagnosed. For example, different test plans are selected for DME M1.1 and M1.3. The new format incorporated into Version 8.0 will only be used when a control unit is encountered that uses a new diagnosing program.
The following pages will highlight the important features of the new format.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.