W/O Tank Leak Diagnosis Module (DM-TL)

Conducting Leak Test On Fuel Tank And Tank Ventilation System


NOTE: Charge fuel tank and tank ventilation system with pressure,
refer to Checking For Leak-Tightness.
Testing and Inspection
During the leak test with a leak detector, be sure to follow the operating instructions of the equipment manufacturer.







CAUTION!
Escaping fuel vapors; only work in well-ventilated rooms or use suitable exhaust extraction unit.
Observe country-specific accident prevention and occupational safety regulations.







The leak test can be carried out with a leak detector.
Possible causes may be:
- Fuel filler cap leaky
- Tank ventilation lines leaky (fuel tank-activated carbon canister-tank ventilation valve)
- Tank ventilation valve leaky (engine compartment)
- Tank sensor on fuel tank leaky
- Activated carbon canister non-return valve leaky (spare wheel recess)