Fuel System - MIL ON Or Check Gas Cap Is Illuminated

B210110_Dual_Mass_Flywheel_Inspection 2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) Technical Service Bulletin # 122010 Date: 120101

Fuel System - MIL ON Or Check Gas Cap Is Illuminated

SI B12 20 10

Engine Electrical Systems

January 2012

Technical Service

This Service Information bulletin supersedes SI B12 20 10 dated September 2011.

[NEW] designates changes to this revision

SUBJECT

Service Engine Soon Lamp or Check Gas Cap Is Illuminated

MODEL

E82 and E88 (1 Series) N51, N52K, N54, N54T and N55 engines up to 5/2011 production

E90, E91, E92 and E93 (3 Series) with N51, N52, N52K, N54, N54T and N55 engines production up to 5/2011 production

E60 and E61 (5 Series) with N52, N52K and N54 engines all production

E70 and E72 (X5 and X5 M) with N52K, N55, N63 and S63 engines up to 5/2011 production

E71 (X6) with N54, N55, N63 and S63 engines up to 5/2011 production

E83 (X3) with N52K engine up to 5/2011 production

E85 and E86 (Z4) with N52K engine up to 5/2011 production

E89 (Z4) with N52K, N54 and N54T engines up to 5/2011 production

F01, F02 and F04 (7 Series) with N54 and N63 engines up to 5/2011 production

F07 (5 Series Gran Turismo) with N55 and N63 engines up to 5/2011 production

F10 (5 Series) with N52T, N55 and N63 engines up to 5/2011 production

F12 and F13 (6 Series) with N63 engine up to 5/2011 production

F25 (X3) with N52T and N55 engines up to 5/2011 production

SITUATION

The customer states that the Service Engine Soon lamp is illuminated. When diagnosed, one of the following faults is stored in the DME fault

memory:

^ DMTL Tank Leakage: Fine leak fault codes 3140, 321C, 2A15, 2B25, 190200, 190201

^ DMTL Tank Leakage: Super fine leak fault codes 3141, 321D, 2A16, 2A14, 2B28, 190300, 190302

CAUSE

Incorrectly installed fuel cap, evaporative system leakage or tank ventilation valve (TEV) that has been jammed open.

PROCEDURE

1. For all vehicles outlined above, perform the applicable test plan diagnosis module for the tank leak DMTL, and follow the attached diagnostic

fault tree for the fault(s) stored.

If a leakage is found, continue following the test plan to find the resolution. Refer to SI B16 01 07 for troubleshooting procedures, using the

VACUTEC(R) Smoke Machine 625-522B-BMW.

2. If no tank leakage is found using the applicable test plan and the attached diagnostic fault tree, then review the vehicle history. If this is the first

time for this complaint and the vehicle history does not indicate a single instance of the Service Engine Soon (SES) lamp illumination in the past for

any complaint, then:

Do not replace any parts and do not initiate a smoke test of the evaporative system.

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 443

Confirm the operation of the fuel cap and advise the customer of the importance of installing the fuel cap properly to avoid tank leakage faults

(see attached diagnostic fault tree for additional customer information).

If the vehicle has had the Service Engine Soon lamp illuminated in the past and no tank leakage is currently present using the applicable test plan,

proceed to step 3.

3. Replace the tank ventilation valve only if the vehicle was produced prior to 5/2011 and the tank ventilation valve has not already been replaced

since 5/2011. Refer to REP 13 90 500 for replacement procedures.

[NEW] Note:

TeileClearing authorization is no longer required for the tank ventilation valve replacement procedure described in this bulletin.

PARTS INFORMATION FOR REPEAT VISIT ONLY

Refer to the current version of EPC for the latest available replacement tank ventilation valve part number.

WARRANTY INFORMATION

ATTACHMENTS

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 444

Diagnostic Fault Tree - Tank Ventilation Valve (Purge Valve)

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 445

Diagnostic Fault Tree: EVAP System Overview