3 Series E91 330xi (N52) TOUR
16 00 102
Checking fuel tank and tank venting system
for leaks with tank leakage diagnosis module
(DMTL)
Note:
An OBD fault is indicated by the "Check Engine" indicator lamp in
the instrument cluster lighting up.
This may indicate a leak in the tank venting system.
Information on this is provided by the fault memory of the DME
control unit.
-
Read out fault memory of DME control unit and carry out a
diagnosis in accordance with faults stored.
-
A leak test of the DMTL module is then carried out if:
•
The components of the DMTL module are OK.
•
A fault is stored in the DME fault memory (tank leak
detected).
Adhere to following conditions in order to carry out a correct leak
test:
-
Content of fuel tank < 90 %
-
Reserve indicator lamp "off"
-
Leave car in workshop for at least 2 hours so that fuel
temperature comes into line with workshop temperature
(ideal fuel temperature approx. 10...20
°
C).
-
Do not under any circumstances fill up car with fresh fuel
(strong exhalation of fresh fuel).
-
Check that tank cap is correctly seated.
Warning!
During the leak test, under no circumstances apply external
pressurization through the fuel filler neck as this may cause
incorrect readings.
RA Checking fuel tank and tank venting system for leaks with tank leakage diagnosis
BMW AG - TIS
21.02.2013 01:09
Issue status (12/2007) Valid only until next DVD is issued
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