m54 engine - BMWClub.lv

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MS 43 NEW FUNCTIONSDM-TL (DIAGNOSIS MODULE - TANK LEAKAGE)The M54 engine with the Siemens MS43.0 engine control system uses the DMTL systemfor fuel system leakage monitoring. The pump is manufactured by Bosch for use with theSiemen’s control system.18M54engMS43/ST039/3/17/00
DM-TL (DIAGNOSIS MODULE - TANK LEAKAGE)FUNCTIONAL OVERVIEW:The DM-TL is located in the drivers side rear wheel well in the X5 and next to the charcoalcanister on the E46 - M54.1. In it’s inactive state, filtered fresh air enters the evaporative system through the sprungopen valve of the DM-TL.2. When the DME activates the DM-TL for leak testing, it first activates only the pumpmotor. This pumps air through a restrictor orifice (1.0 or 0.5 mm) which causes the electricmotor to draw a specific amperage value. This value is equivalent to the size of therestrictor.3. The solenoid valve is then energized which seals the evap system and directs the pumpoutput to pressurize the evap system.The evap system is detected as having a large leak if the amperage value is not realized, asmall leak if the same reference amperage is realized or no leak if the amperage value ishigher than the reference amperage.1 2 319T:/Automobiles/ST039/handouts
Page 1: Table of ContentsSubjectPageM54 Eng
Page 4 and 5: M54 ENGINEMechanical ChangesIn addi
Page 6 and 7: M54B30 ENGINE293225ART-HPCHARTB30.6
Page 8 and 9: REVIEW QUESTIONS1. What is the majo
Page 10 and 11: SYSTEM OVERVIEW I-P-OServiceEngineS
Page 12 and 13: MS 43 NEW FUNCTIONSACCELERATOR PEDA
Page 14 and 15: MS 43 NEW FUNCTIONSEDK THROTTLE POS
Page 16 and 17: MS 43 NEW FUNCTIONSMAIN RELAY MONIT
Page 20 and 21: DM-TL (DIAGNOSIS MODULE - TANK LEAK
Page 22 and 23: LEAK DIAGNOSIS TESTPHASE 1 - REFERE
Page 24 and 25: TEST RESULTSThe time duration varie
Page 26 and 27: OXYGEN SENSOR SIGNAL INFLUENCE ON I
Page 28 and 29: CRANKSHAFT SENSORThe crankshaft sen
Page 30 and 31: EMISSIONS RELEVANT:During an interv
Page 32 and 33: MASS AIR FLOW SENSOR HFMThe Siemens
Page 34 and 35: NOTE: With extremely hot oil temper
Page 36 and 37: The dual VANOS in conjunction with
Page 38 and 39: SECONDARY AIR INJECTIONThis ECM con
Page 40 and 41: ENGINE/VEHICLE SPEEDLIMITATIONFor e
Page 42 and 43: RESONANCE/TURBULENCE INTAKE SYSTEMO
Page 44 and 45: #1 Cylinder Intake Valve openLow to
Page 46 and 47: IDLE SPEED CONTROLThe ECM determine
Page 48 and 49: PURGE VALVEThe purge valve (TEV) is

m54 engine - BMWClub.lv

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