Evaporative Emissions Control Diagrams; Evaporative Emissions Control - BMW 5251 Service Manual

. .
Fuel Injection
Check resistance of valve across valve terminals
Idle speed control valve coil resistance
Terminals 1 and
2 20 i 2 . 0 .
Terminals
2
and
3
20 i 2 . 0 .
Terminals 1 and
3 40 i 4 . 0 .
CAUTIOIG
Be sure ignition is OFFbefore disconnecting or reconnecting
DME
system components.
-
To remove valve, remove cable bracket mounting bolt and
idle speed control valve mounting bracket bolts from front of
throttle housing and remove idle speed control valve with at-
tached bracket.
NOTE-
When installing idle speed control valve, remove intake boot
sealing ring from valve and install into intake air boot. Then
install valve info sealing
ring.
Evaporative emissions control diagrams
MS 42.0 (LDP)
, - a " -
Evaporative emissions control,
(MS 42.0, MS 43.0)
E39 models with
MS
42.0 or
MS
43.0 engine are equipped
with a fuel system evaporative pressure leak diagnosis sys-
tem. The main component of this system is the leak diagnosis
pump (LDP or DM-TL). The function of either system is to
pressurize the fuel tank and the evaporative emission system
for the purpose of detecting leaks.