valve BMW X5 2002 E53 M54 Engine Workshop Manual

BMW X5 2002 E53 M54 Engine Workshop Manual X5 2002 E53 BMW BMW https://www.carmanualsonline.info/img/1/5445/w960_5445-0.png BMW X5 2002 E53 M54 Engine Workshop Manual

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BMW X5 2002 E53 M54 Engine Workshop Manual Initial Print Date: 02/2000Revision Date: 6/2000
Subject Page
M54 Engine
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Mechanical

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BMW X5 2002 E53 M54 Engine Workshop Manual M54 ENGINE
Mechanical Changes
In  addition  to  the  increased  displacement  of  the  M54B30  engine,  several  mechanical
changes were incorporated into the engine for reduced emissions and increase

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BMW X5 2002 E53 M54 Engine Workshop Manual M54 ENGINE
MECHANICAL CHANGES
NON RETURN FUEL RAIL SYSTEM
The  M54  engine  with  MS  43.0  control  uses  the  non  return  fuel  rail  system  introduced  on
the M62 TU engine. The system meets runn

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BMW X5 2002 E53 M54 Engine Workshop Manual 8
M54engMS43/ST036/6/2000
SIEMENS ENGINE MANAGEMENT SYSTEM
Models: E53 X5
SOP:  3 liter - 4/00
Objectives of the Module:
At the end of this section of the handout you will be able to:
• Identify the

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BMW X5 2002 E53 M54 Engine Workshop Manual 10
M54engMS43/ST036/6/2000
MS 43 NEW FUNCTIONS
ELECTRONIC THROTTLE SYSTEM - EML
The  M54  engine  with  MS  43  engine  control  uses  an  electronic  throttle  control  system
adopted from the ME 7.2

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BMW X5 2002 E53 M54 Engine Workshop Manual 18
M54engms43/STO36/6/00
123
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 charcoal
canister on the E4

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BMW X5 2002 E53 M54 Engine Workshop Manual 19
M54engMS43/ST039/3/17/00
DM-TL (DIAGNOSIS MODULE - TANK LEAKAGE)
FUNCTION
The  DC  Motor  LDP  ensures  accurate  fuel  system  leak  detection  for  leaks  as  small  as
0.5mm (.020”). The pump

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BMW X5 2002 E53 M54 Engine Workshop Manual 22
M54engMS43/ST039/3/17/00
PHASE 2 - LEAK DETECTION
The ECM energizes the Change Over Valve allowing the pressurized air to enter the fuel sys-
tem  through  the  Charcoal  Canister,    The  ECM  mon

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BMW X5 2002 E53 M54 Engine Workshop Manual 32
M54engMS43/ST036/6/2000
MS 43 CARRY OVER FUNCTIONS
OUTPUT FUNCTIONS -VANOS CONTROL
With  the    double  VANOS  system,  the  valve  timing  is  changed  on  both  the  intake  and  the
exhaust cams

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BMW X5 2002 E53 M54 Engine Workshop Manual 35
M54engMS43/ST036/6/20000
The  dual  VANOS  in  conjunction  with  the  variable  intake  manifold  provides  an  additional
emission control feature.  
Because  of  the  improved  combustion,  the
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