M42 - Engine Control Module DME 1.7.2 Fault Code 41 (12 09 95)

M42 - ENGINE CONTROL MODULE DME 1.7.2 FAULT CODE 41

TECHNICAL SERVICE BULLETIN

M42 - ENGINE CONTROL MODULE DME 1.7.2 FAULT CODE 41

Model(s): 1994-96 BMW 318i, 318iA Vehicles Produced 1/94-12/9

Group: 12 - Engine electrical system

Bulletin No.: 12 09 95

Date: September 1996

SITUATION

A customer complaint pertaining to the following may be received:

• The engine is difficult to start when HOT.
• The "Check Engine" lamp is illuminated and fault code 41 is stored in the DME.
• Engine starts then immediately stalls.
• Engine will start if accelerator is depressed but will stall once released.

CORRECTION

An updated idle control valve and DME EPROM are available for vehicles produced from 1/94-12/95 and should be installed if no problem is found with the air mass meter and its associated wiring. If the EPROM in the engine control module is not removable, a new control module with the updated software program needs to be obtained.

PROCEDURE

If a CUSTOMER COMPLAINT is received and no problems are found with the air flow meter or the associated wiring;

1. Replace the currently installed idle control valve with P/N 13 41 1 433 627.
2. Determine if the EPROM in the control module is removable. Refer to Fig 1 for more information on how to identify if the EPROM is soldered into the module.

   If the letters OS appear on the white bar-coded label (1) on the cover of the DME, the EPROM is not removable. See Fig 1 .

   If OS does not appear on the label (1), then the EPROM is removable.

   1. If the EPROM in the control module is not removable a new updated engine control module (P/N 12 14 1 429 767) should be ordered. The engine control module needs to be variant coded (recode) to the vehicle into which it is installed as indicated below.
   2. If the EPROM in the control module is removable install the latest DME EPROM and variant code (recode) the engine control module as indicated below.
      NOTE: The replacement EPROM P/N 01 00 1 469 768 is valid for vehicles with EWS II or without EWS II.
3. Follow the coding procedure provided using programming software 6.0:
   1. Select: "2 DME Variant Code."
   2. Select: "1 Exchange Control Unit."
   3. Select: "4 M40/42/43."
   4. "M40/42/43 4-Cyl. has been selected? Y/N." Select Y.
   5. "Is the vehicle fitted with a DME M1.7.3 (M43 engine from 9/95)? Y/N." Select N.
   6. Select: 1 "New Coding."
   7. Select: 1 "Adopt code from old control unit." Follow the procedure indicated once selection is made.

      OR

   8. Select 2 "Enter code manually" (See table for Variant Code). Follow the procedure indicated once selection is made.
      VARIANT CODE
      
      

      Engine Control Module (M42)	Variant Code With Automatic Transmission	Variant Code With Manual Transmission
      DME 1.7.2 w/o EWSII	821E	801E
      DME 1.7.2 with EWSII	821C	801C

4. Clear all fault codes stored in the DME.
5. Verify proper engine operation by starting engine 3 times.
6. Check if any faults were reset in the DME.

PARTS INFORMATION

Description	Part Number
Engine Control Module EPROM	01 00 1 469 768
Idle Control Valve	13 41 1 433 627
Updated replacement engine control module	12 14 1 429 767

WARRANTY INFORMATION

Parts and labor will be reimbursable under the terms of the applicable BMW Emissions Warranty.

DEFECT CODE: 13 41 91 09 00

LABOR OPERATION: 00 51 199

- DESCRIPTION: Replace idle control valve, the EPROM in the engine control module and recode.

- LABOR ALLOWANCE: 9 FRU

LABOR OPERATION: 00 51 200

- DESCRIPTION: Replace idle control valve, engine control module and recode.

- LABOR ALLOWANCE: 17 FRU

LABOR OPERATION: 00 1 198

- DESCRIPTION: Replace idle control valve.

- LABOR ALLOWANCE: 11 FRU