16 12... Checking repumping function of suction-jet pump with BMW diagnosis system
WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Ensure adequate ventilation in the place of work!
Ensure absolute cleanliness when working on the open fuel tank.
Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown!
Catch escaping fuel in a suitable container.
Ensure absolute cleanliness when working on the open fuel tank.
Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown!
Catch escaping fuel in a suitable container.
Necessary preliminary tasks
- Fill level must be ≤ 28 l
- If necessary, DRAW OFF F FROM FUEL TANK
- Pour two to three liters of fuel into left tank chamber via the flange opening
- Connect diagnosis system
- Path:
- Brief test KOMBI Instrument cluster
- Diagnosis connect unit functions
- Diagnosis requests
- Tank sensor 1 tank sensor 2
- Path:
NOTE:
Tank sensor 1 = right tank sensor
Tank sensor 2 = left tank sensor
Tank sensor 2 = left tank sensor
Start engine.
Compare display for left and right tank chambers.
Repumping function OK
If fill level of tank sensor 2 (left chamber) is falling (approx. one liter per minute).
Repumping function not OK
If fill level of tank sensor 2 (left chamber) is stable or rising.