Auto Service Professional

APR 2018

Magazine for the auto service professional

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54 | ASP April 2018 Technical Service Bulletins BMW LEAN BIMMER is bulletin applies to 2010 BMW Hybrid X6 models equipped with the E72 engine. e Service Engine Soon lamp may be illumi- nated, with faults stored in the DME memory. 29E0.....Fuel mixture control, mixture too lean, bank 1. 29E1.....Fuel mixture control too lean, bank 2. e cause may be an un-metered air leak in the induction system or a miscalculation of the air usage in the induction system procedure. Perform all applicable test plans for the faults stored (mechanical leakage, restric- tion or electrical failure of an induction system component). If the results of the tests are inconclusive, proceed to the following troubleshooting. Smoke testing the induction system is the most effective way to determine the integrity of the system. Inspect the charge air line (1) connections and the clamps. Check the tightness of the attachment screw (2). Check the crankcase ventilation system connection (3). Check the connection at the flexible coupler (4) on the air box. Remove the filtered air duct (5) for inspection. Dodge NITRO NONSENSE is bulletin applies to 2009-2011 Dodge Nitro models equipped with a 3.7L engine and automatic transmission, built before Feb. 23, 2011. A MIL may be on, with DTC P0401 (EGR System Performance) stored in the PCM. No other symptoms may be noted. e fix involves selectively erasing and reprogramming the PCM with new software, with the wiTECH software at release 12.01 or higher. Using a scan tool (wiTECH) with the latest software, clear any DTCs that may have set in other modules. Type the necessary information on an authorized modification label (P/N 04275086AB) and attach it near the VECI label. Ford FIESTA FIX Some 2011-2013 Ford Fiesta vehicles built on or before Sept. 12, 2012, may exhibit a thump/rattle noise coming from the fuel filler neck area. e customer may indicate that the noise is most noticeable in warm ambient temperatures, and that the issue may be intermittent and may occur mostly at idle. e Natural Vacuum Leak Detection (NVLD) module may make a thump/rattle noise during the normal purge of the evapora- tive emission canister (EVAP). e noise only occurs when vapor purge is active and stops when the EVAP canister purge valve is closed. Replace the NVLD module assembly. Refer to workshop manual section 303-13. AE8Z-9J279-L...........NVLD assembly, 4-door AE8Z-9J279-M..........NVLD assembly, 5-door Check the areas noted as 1 to 5 (see text). With the filtered air duct removed, inspect the sealing surfaces (1) and carefully inspect the seal- ing surfaces inside and outside of the gasket (2).

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