electrical system BMW 540i 2000 E39 Repair Manual

BMW 540i 2000 E39 Repair Manual 540i 2000 E39 BMW BMW https://www.carmanualsonline.info/img/1/2822/w960_2822-0.png BMW 540i 2000 E39 Repair Manual

Page 419 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection 
A faulty MAF sensor can produce the following  problems: 
Difficult  to restart  when  engine  is hot 
Engine starts  then sta

Page 422 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection 
4 Remove electrical harness connector  (arrow) from IAT sen- 
sor. 
CAUTION- 
Be  sure  the ignition  switch is in  the  off p

Page 425 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection 
MS 43.0 throttle valve assembly,  replacing 
The electronic throttle valve assembly forthe MS43.0 system 
is referred to  as

Page 431 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
. - 
Fuel Injection I 
Working inside E-box, disconnect ECM harness  connector 
(arrow)  by releasing  fastener and pivoting  connector  up an

Page 436 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
130-46 
Fuel Injection 
When  system  faults are detected, a  diagnostic trouble code 
(DTC)  is stored  in the  engine  control module  (ECM)

Page 439 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
- Fuel Injection 
ECM relay, testing 
The engine control module (ECM) relay is energized via  the 
ECM and  supplies battery positive 
(B+) po

Page 441 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
130-51 
Fuel Injection 
Oxygen sensors, checking 
The  oxygen  sensor provides  an input  voltage  signal [0.2 vdc 
(lean)  to 0.8  vdc  (rich

Page 442 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
.. .- 
/Fuel lnjeciion 
NOJE- 
With engine oft disconnect harness connector  and checlc 
heating element resistance between white wires  on th

Page 443 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection I 
4 Release spring  clips (arrows) from fuel injectors and  pull in- 
jector  electrical  loom straight  up to remove. 
4 Chec

Page 448 of 1002

BMW 540i 2000 E39 Repair Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection Evaporative fuel system pressure leak 
diagnosis, overview 
(M5.2.1 only) 
1998 540i models are  equipped with  an evaporative