2001 BMW 525i Speed signal

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Page 437 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection 
M5.2 system features 
The Bosch M5.2  system used on 1997 540i  models uses  an 
88-pin control  unit. The 
M5.2 system has th

Page 445 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
Fuel Injection 
- If voltage is present as described  above, check wiring be- 
tween  ECM and valve.  If no  wiring  faults are found, check

Page 449 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
130-59 
Fuel Injection 
:-- -i. Evaporative emissions 
1. 
control diagram  (M5.2.1) 
i 1 
i I @ 1. ECM r.=.:-:, 2. Purge valve 
3. Leak detec

Page 450 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
130-60 
/Fuel lniection 
Tabled. Bosch M5.2 ECM pin assignments 
Note 
Pin 
21 
20 I output / Crankshaft position sensor (speed and position)

Page 451 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
-. - 
Fuel Injection 
I 68 1 / Not used 
Table 
d. Bosch 
M5.2 ECM pin assignments 
I  I I 
69 1 input I AIC system standby signal (> 10 V) 1

Page 454 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
- 
Fuel Injection 
Table e. Bosch 5.2.1 ECM pin assignments 
Pin 
I~iqnal 1 Description 1 Note 
I  I I 
46 llnput ICrankshaft position sensor

Page 458 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
130-68 
Fuel Injection 
0 
4 The ME 7.2 uses  a non-return  fuel rail. The fuel pressure  reg- 
ulator is  integrated  into the fuel  filter.

Page 459 of 1002

BMW 525i 2001 E39 Workshop Manual Downloaded from www.Manualslib.com manuals search engine 
-- 
Fuel Injection I 
The PWG  potentiometers provide DC voltage  signals as in- 
put to the  ME 7.2 control  module for throttle and idle  co
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