16 12... Checking repumping function of suction jet pump with BMW diagnosis system
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. 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 fuel from fuel tank
- Pour two to three liters of fuel into the left tank chamber via the flange opening
- Connect diagnosis system
- Path:
- Brief test KOMBI Instrument cluster
- Diagnosis control 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.