BMW X5 2001 E53 M54 Engine User Guide

BMW X5 2001 E53 M54 Engine User Guide X5 2001 E53 BMW BMW https://www.carmanualsonline.info/img/1/5445/w960_5445-0.png BMW X5 2001 E53 M54 Engine User Guide
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Page 11 of 48

BMW X5 2001 E53 M54 Engine User Guide 11
M54engMS43/ST036/6/20000
MS 43 NEW FUNCTIONS
ACCELERATOR PEDAL SENSOR
The accelerator pedal sensor is similar to the PWG used on the ME 7.2 system. It is inte-
grated into the accelerator pedal hou

Page 12 of 48

BMW X5 2001 E53 M54 Engine User Guide 12
M54engMS43/ST036/6/2000
MS 43 NEW FUNCTIONS
ACCELERATOR PEDAL SENSOR
PWG SIGNAL MONITORING & PWG FAILSAFE OPERATION:
• As a redundant safety feature the PWG provides two separate signals from two

Page 13 of 48

BMW X5 2001 E53 M54 Engine User Guide 13
M54engMS43/ST036/6/20000
MS 43 NEW FUNCTIONS
EDK THROTTLE POSITION FEEDBACK SIGNALS
The EDK throttle plate is monitored by two integrated potentiometers. The potentiometers
provide linear voltage f

Page 14 of 48

BMW X5 2001 E53 M54 Engine User Guide 14
M54engMS43/ST036/6/2000
MS 43 NEW FUNCTIONS
EDK THROTTLE POSITION FEEDBACK SIGNALS
EDK FEEDBACK SIGNAL MONITORING & EDK FAILSAFE OPERATION:
• The EDK provides two separate signals from two integr

Page 15 of 48

BMW X5 2001 E53 M54 Engine User Guide 15
M54engMS43/ST036/6/20000
MS 43 NEW FUNCTIONS
MAIN RELAY MONITOR
The  MS  43.0  system  incorporates  a  new  monitoring  feature  for  terminal  87  (KL  87)  of  the
main relay. The relay is monit

Page 16 of 48

BMW X5 2001 E53 M54 Engine User Guide 16
M54engMS43/ST036/6/2000
MS 43 NEW FUNCTIONS
EMISSION OPTIMIZED - IGNITION KEY OFF
“Emission Optimized Ignition Key Off” is a programmed feature of the MS 43 control mod-
ule. 
After  the  ECM

Page 17 of 48

BMW X5 2001 E53 M54 Engine User Guide 17
M54engms43/STO36/6/2000
MS 43 NEW FUNCTIONS
DM-TL (DIAGNOSIS MODULE - TANK LEAKAGE)
The  M54  engine  with  the  Siemens  MS43.0  engine  control  system  uses  the  DMTL  system
for  fuel  system

Page 18 of 48

BMW X5 2001 E53 M54 Engine User Guide 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

Page 19 of 48

BMW X5 2001 E53 M54 Engine User Guide 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

Page 20 of 48

BMW X5 2001 E53 M54 Engine User Guide 20
M54engMS43/ST039/3/17/00
LEAK DIAGNOSIS TEST PRECONDITIONS
The ECM only initiates a leak diagnosis test every second time the criteria are met.  The cri-
teria is as follows:
• Engine OFF with ig
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