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 DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSUPDATED MODIC(R) SOFTWARE - P8.0 PROGRAMMINGPROGRAMMING THE CONTROL MODULE3. "EXCHANGE EPROM"
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
3. "Exchange EPROM"
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION 3. "Exchange EPROM"
This step is used to determine and program a programmable EPROM that is to be installed for DME 3.1 and 3.3 only. The programming procedure is divided into 2 steps.
Step 1 - "Determining EPROM"
The MODIC reads the data (chassis number, part number of the basic control module, and part number of the programmed control module) necessary for determining a replacement control module EPROM from the defective control module and will display the acceptable replacement part number(s) which need to be installed in that vehicle.
If automatic determination is not possible, the data may be read off the label of the defective control module and entered manually into the MODIC.
Step 2 - "Program EPROM"
The MODIC programs the newly installed EPROM with the aid of the data derived in step 1. The new control module label can be printed out by the MODIC station printer, or completed by hand. The MODIC programs the basic control module with the latest data.
An EPROM may only be programmed one time. It is possible however to install a new EPROM and program it.
This procedure takes approximately 3 minutes. Extensive help information is available by pressing the "C" key on the MODIC. This help information is only available when the "C" key is displayed.
Be advised that there may not be an EPROM for all control modules. If this is the case, a preprogrammed control module must be ordered.
Step 1 - "Determining EPROM"
The MODIC reads the data (chassis number, part number of the basic control module, and part number of the programmed control module) necessary for determining a replacement control module EPROM from the defective control module and will display the acceptable replacement part number(s) which need to be installed in that vehicle.
If automatic determination is not possible, the data may be read off the label of the defective control module and entered manually into the MODIC.
Step 2 - "Program EPROM"
The MODIC programs the newly installed EPROM with the aid of the data derived in step 1. The new control module label can be printed out by the MODIC station printer, or completed by hand. The MODIC programs the basic control module with the latest data.
An EPROM may only be programmed one time. It is possible however to install a new EPROM and program it.
This procedure takes approximately 3 minutes. Extensive help information is available by pressing the "C" key on the MODIC. This help information is only available when the "C" key is displayed.
Be advised that there may not be an EPROM for all control modules. If this is the case, a preprogrammed control module must be ordered.
RENDER: 1.0x
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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.