5 Series E39 540i (M62) TOUR
16 00 510
Conducting leak test on fuel tank and tank
ventilation system
Note:
The following procedure is only applicable to vehicles with the tank
leak diagnosis module (DM-TL).
-
Select function "4 Expert mode" on Diagnosis and
Information System (DIS).
-
From menu "2 Activate components", select function "118
Tank leak diagnosis: DMTL pump". Following appears in
display: DMTL pump; pump is activated.
-
Tank leak diagnosis pump pressurizes fuel tank and tank
venting system.
When leak-testing with a leak detector: follow manufacturer's
operating instructions.
Caution!
On vehicles with tank leak diagnosis modules (DM-TL), do not
work with external pressurization as the tank venting system
will leak under this condition.
On account of emerging fuel vapors, carry out all work in well
ventilated rooms. Or use a suitable extractor system.
Observe country-specific accident prevention and
occupational safety regulations.
The leak test can be carried out with a leak detector.
Possible causes may be:
- Tank cap leaking (check tank cap pressure relief valve).
- Tank venting lines leaking (fuel tank - carbon canister - tank
venting valve).
- Tank venting valve leaking (engine compartment)
- Fuel level sensor flange on tank leaking
RA Conducting leak test on fuel tank and tank ventilation system
BMW AG - TIS
20.02.2013 14:49
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 1 -
