DME Engine Control Unit Codes (13 02 90 (3009))

Publication date: 1993-08-01
Reference number: 13 02 90 (3009)

DME ENGINE CONTROL UNIT CODES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 13 02 90 (3009)

ENGINE CONTROL MODULE CODES

Model: Various BMW models

Group: 13 - Fuel Systems

Bulletin No.: 13 02 90 (3009)

Date: August, 1993

NOTE: This bulletin supersedes the following Service-Information bulletins: S.I. 13 02 90 (3009), dated March 1991 S.I. 13 02 90 (3009), dated June 1990

SUBJECT

Engine Control Module Codes

VERSIONS

M1.1, M1.2, M1.3, M1.7, M3.1, M3.3, M3.3.1

SITUATION

Successful diagnosis requires that BMW technicians be able to recognize and verify all engine control module codes.

SOLUTION

The attachments provide a quick cross-reference of all known compatible U.S. engine control module codes and hardware numbers.

With the introduction of this new information, the previous slide chart insert (SD 90-012) and sleeve (SD 90-010) are invalid and no longer available.

ACTION

The engine control module codes should be checked whenever any troubleshooting (drivetrain related) is conducted or when using the BMW MODIC to enter an engine control module variant code.

A mismatch of engine control module codes can produce driveability complaints. Such complaints will generally elude regular troubleshooting techniques. Therefore when troubleshooting the first step is to verify all engine control module codes using the latest information available.

IDENTIFICATION INFORMATION

Fig 1 illustrates the locations of the codes on the engine control module as well as how the codes appear on the DME identification page

when using the BMW Service Tester.

As shown in Fig 1 , the engine control module codes are printed at various places on the outside of each control module. This information is helpful when handling the actual control unit but final verification must always be made electronically, using the BMW MoDiC or Service Tester.

Fig 1: Engine Control Module Visual Identification

CODE EXPLANATION

BOSCH HARDWARE NUMBER (10 DIGITS)

Assigned by the vendor, this code is related to the engine control module series and engine size. Typically, only the last three digits indicate changes. See Fig 2 for Bosch hardware number location.

Fig 2: Bosch Hardware Number Location

BMW HARDWARE NUMBER (7 DIGITS)

The application or use of the control unit is specified by the BMW Hardware Number. Application can include self-diagnostics, maximum RPM limit and related system compatibility (ABS, EML etc). See Fig 3 for BMW Hardware Number Location.

Fig 3: BMW Hardware Number Location

ENGINE CONTROL MODULE VARIANT CODE (4 DIGITS)

The variant code "personalizes" the Bosch and BMW Hardware characteristics by signaling anticipated fuel grade, on-board emissions equipment and transmission control type.

Only the engine control module variant code can be changed using the BMW MoDiC (except on M3.1, M3.3, M3.3.1). Control modules having hardware numbers which are incorrect for the subject vehicle must be replaced. In such instances the vehicle repair history should be reviewed for previous repairs involving engine control module replacement.

A control module which has been installed in the wrong vehicle and is not defective, is not a warranty matter. Any claim of this type will be declined.

All available resources should be consulted when an incorrect control module application is suspected.

VARIANT CODE

The variant code can be entered or changed up to seven times using the BMW MODIC.

NOTE: Engine control module versions M3.1, M3.3 and M3.3.1 cannot be coded using a variant code.

Variant code entry or changes are only approved for the following situations:

A.) Replacement engine control module supplied in a "basic state" bearing the variant code FF01. After installation the correct variant code should be entered using the BMW MoDiC.

B.) Variant code changing provides greater utilization of existing parts stock. Engine control modules having compatible BMW and Bosch Hardware numbers can undergo a variant code change using the BMW MoDiC.

Example: One engine control module bearing the following hardware numbers can be used in six different U.S. models.

BMW hardware number: 1 722 611

Bosch hardware number: 0 261 200 179

PARTS APPLICATION

Model Engine Family Engine Size	DME Series	Trans	Variant Code	BMW Hardware Numbers	BOSCH Hardware Numbers
535i M30/3.5	M1.3	M EH	C83E CB3E	1 722 611 1 726 685	0261200179 "
635CSi M30/3.5	M1.3	M EH	C87E CB7E	1 722 611 1 726 685	0261200179
735i/L M30/3.5	M1.3	M EH	C85E CB5E	1 722 611 1 726 685	0261200179

Entering or changing of variant codes is only approved with strict adherence to the following designation limitations:

Engine Family * BMW Hardware Number
Engine Size * Bosch Hardware Number

These classifications are fixed and limited to each specific engine size. See charts for all approved U.S. variant Code/Hardware combinations.

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. Repairs for poor engine performance or engine damage as a result of miscoding are not covered under warranty.

PARTS INFORMATION

Non-coded engine control modules contain the description "Basic Control Unit" or "Control Unit DME Without Code" and must have the variant code entered using the BMW MoDiC after installation.

APPROVED DME CODE COMBINATIONS

Model Engine Family Engine Size	DME Series	Trans	Variant Code	BMW Hardware Numbers	BOSCH Hardware Numbers
318i/S -M42/1.8 Model Year 90	M1.7	M	801E	1 734 060	0 261 200 175
318i/S -M42/1.8	M1.7	M	801E	1 734 131 1 734 560 1 734 659	0 261 200 175
318i/iS/iA/iSA (E36) - M42/1.8	M1.7	M EH	801E 821E	1 739 045 1 739 678	0 261 200 990
325e - M20/2.7	M1.1	M A	C81E CA1E	1 722 220 1 714 998 1 730 450 1 730 793	0 261 200 154
325i - M20/2.5 Model Year 87	M1.1	M A	C81E CA1E	1 722 210 1 714 998	0 261 200 153
325i - M20/2.5 Model Year 88	M1.1	M A	C85E CA5E	1 722 210 1 714 998	0 261 200 153
325iX - M20/2.5	M1.1	M A	C83E CA3E	1 722 210 1 714 998	0 261 200 153
325i - M20/2.5 Model Year 87 1	M1.3	M A	C81E CA1E	1 722 269 1 726 102 1 726 683 1 730 576 1 722 245 1 730 527 1 730 576	0 261 200 1730 261 200 3800 261 200 525
325i - M202.5 Model Year 88 and Later	M1.3	M A	C85E CA5E	1 722 269 1 726 102 1 726 366 1 726 600 1 726 683 1 726 686 1 730 523 1 730 525 1 730 527 1 730 529 1 730 575 1 730 576 1 722 245 1 735 365 1 748 264	0 261 200 1730 261 200 3800 261 200 3820 261 200 5240 261 200 525
325iX - M20/2.5	M1.3	M	C83E	1 722 269 1 726 102 1 726 366 1 726 683 1 730 525 1 730 527 1 730 575 1 730 576 1 722 245 1 748 264	0 261 200 1730 261 200 3800 261 200 525
325iXA -M20/2.5	M1.3	A	CA3E	1 726 190 1 726 367 1 726 600 1 726 686 1 730 523 1 730 528 1 730 529 1 735 365 1 748 206 1 748 255 1 748 262	0 261 200 3510 261 200 382
325i - M50/2.5	M3.1	M EH	Not Applicable	1 730 784 1 735 614 1 748 037 1 748 401	0 261 200 4020 261 200 4030 261 200 405
325i - M50 TU/2.5	M3.3.1	M/EH	Not Applicable	1 703 325 1 703 326 1 703 563	0 261 200 413
528e - M20/2.7	M1.1	M A	C87E CA7E	1 722 220 1 714 999 1 730 450 1 730 793	0 261 200 154
525i - M20/2.5	M1.3	M A	C89E CA9E	1 726 102 1 726 366 1 726 683 1 730 525 1 730 527 1 730 575 1 730 576 1 722 245 1 722 269 1 726 366 1 748 264	0 261 200 1730 261 200 3800 261 200 5240 261 200 525
525i - M50/2.5	M3.1	M EH	Not Applicable	1 730 784 1 735 614 1 748 037 1 748 401	0 261 200 4020 261 200 4030 261 200 405
525i -M50 TU/2.5	M3.3.1	M/EH	Not Applicable	1 703 325 1 703 326 1 703 563	0 261 200 413
530i - M60/3.0	M3.3	M/EH	Not Applicable	1 703 400	0 261 200 413
535i - M30/3.5	M1.3	M EH	C83E CB3E	1 722 611 1 726 685 1 730 697 1 738 168 1 748 251 1 748 258	0 261 200 179
535i w/ASC - M30/3.5	M1.3	M EH	C83A CB3A	1 730 697 1 738 168 1 748 251 1 748 258	0 261 200 179
M5 - S38/3.6	M1.2	M	881E	1 315 408 1 316 941 1 317 113 1 317 114	0 261 200 350
540i - M60/4.0	M3.3	EH	Not Applicable	1 703 400	0 261 200 404
635CSi- M30/3.5	M1.1	M EH	C85E CB5E	1 718 807 1 720 980 1 720 981 1 708 598	0 261 200 150
635CSi- M30/3.52	M1.3	M EH	C87E CB7E	1 722 611 1 726 685 1 730 697 1 738 168 1 748 251 1 748 258	0 261 200 179
735i/L- M30/3.5	M1.1	M EH	C85E CB5E	1 718 807 1 720 980 1 720 981 1 708 598	0 261 200 150
735i/L- M30/3.5	M1.3	M EH	C85E CB5E	1 722 611 1 726 685 1 730 697 1 738 168 1 748 251 1 748 258	0 261 200 179
735i/L w/ASC - M30/3.5	M1.3	EH	CB5A	1 730 697 1 738 168 1 748 251 1 748 258	0 261 200 179
740iA/iL - M60/4.0	M3.3	EH	Not Applicable	1 703 400 1 748 359	0 261 200 404
750iL - M70/5.05	M1.2	EH	C31A	1 718 519 1 725 694 1 729 708 1 718 620 1 720 429	0 261 200 156
750iL - M70/5.05	M1.7	EH	C312	1 731 8233 1 731 9913 1 733 3003 1 736 3703 1 736 6353 1 738 7034 1 748 2013	0 261 200 3520 261 200 998
850i - M70/5.0 5	M1.7	M EH	C052 C352	1 731 9913 1 733 3003 1 736 3703 1 736 6353 1 738 7034 1 748 2013	0 261 200 3520 261 200 998