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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSECM - ORDERING INFORMATION FOR REFERENCE CHART
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
ECM - Ordering Information For Reference Chart
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION ECM - Ordering Information For Reference Chart
90bmw12 Group 13 Fuel Systems
Bulletin Number 13 07 90 (3091)
Woodcliff Lake, NJ August 1990 Service Engineering
SUBJECT: DME Control Unit Codes
Versions: M1.1, M1.2, M1.3. M1.7,
Situation: Successful diagnosis requires that BMW technicians be able to recognize and verify all DME Control Unit codes.
Solution: To assist in the proper identification of these codes, BMW NA has developed a new sliding-type reference chart.
This reference chart consist of 2 parts: a plastic sleeve and a card stock insert.
Description Item No. Price
Reference Chart Sleeve SD 90-010 $15.00
Reference Chart Insert SD 90-012 $ 2.00
The technical information is contained on the insert, which will be updated as necessary. Insert updates will be announced and can be ordered using item number SD 90-012. The sleeve, made of durable plastic, should be retained for future inserts.
As part of the Automatic Tool Shipment Program every dealer will receive 2 sleeves and 2 inserts. Requests for additional copies should be addressed to:
BMW of North America, Inc. BMW Plaza Montvale, N.J. 07645
Att: Service Engineering or call (201) 573-2091
A pre-printed order form is enclosed for your convenience.
Warning: BMW personnel are reminded that it is impossible to change the engine family or size through variant code changing. The variant code is only used to precisely match the control unit hardware with other variables such as vehicle type, market, equipment and so forth. Intentional miscoding will not serve any useful purpose and may result in poor engine performance or engine damage.
Bulletin Number 13 07 90 (3091)
Woodcliff Lake, NJ August 1990 Service Engineering
SUBJECT: DME Control Unit Codes
Versions: M1.1, M1.2, M1.3. M1.7,
Situation: Successful diagnosis requires that BMW technicians be able to recognize and verify all DME Control Unit codes.
Solution: To assist in the proper identification of these codes, BMW NA has developed a new sliding-type reference chart.
This reference chart consist of 2 parts: a plastic sleeve and a card stock insert.
Description Item No. Price
Reference Chart Sleeve SD 90-010 $15.00
Reference Chart Insert SD 90-012 $ 2.00
The technical information is contained on the insert, which will be updated as necessary. Insert updates will be announced and can be ordered using item number SD 90-012. The sleeve, made of durable plastic, should be retained for future inserts.
As part of the Automatic Tool Shipment Program every dealer will receive 2 sleeves and 2 inserts. Requests for additional copies should be addressed to:
BMW of North America, Inc. BMW Plaza Montvale, N.J. 07645
Att: Service Engineering or call (201) 573-2091
A pre-printed order form is enclosed for your convenience.
Warning: BMW personnel are reminded that it is impossible to change the engine family or size through variant code changing. The variant code is only used to precisely match the control unit hardware with other variables such as vehicle type, market, equipment and so forth. Intentional miscoding will not serve any useful purpose and may result in poor engine performance or engine damage.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.