P1486

P1486

Diagnosis information - DME

DMTL - Tank leak diagnosis module

NOTE: In this context, please also observe the document >>Function description<<.

Diagnostic conditions

NOTE:
- The diagnostic conditions can also be produced with the PIWIS Tester via the short test >>Tank leak test<<
- The ignition must be switched off after the start of the test.

- Short test

or:
- Vehicle speed = 0 km/h
- Engine speed = 0 rpm
- Altitude correction factor > 0.73
- When the engine is started, the coolant temperature may be only 6.8 K above the ambient temperature
- Coolant temperature when engine starts > 3.8 °C (38.8 °F)
- Time that the engine must have been running for before the ignition is switched off > 20 minutes
- Ignition switched off for at least 10 seconds
- Ambient temperature 4 ... 35.3 °C (39.2 ... 95.5 °F)
- Carbon canister loading < 3 for very fine leak
- Fuel level 10 ... 54 liters
- Battery positive voltage 11.02 ... 14.5 V
- No refueling process
- No fault for ambient pressure sensor, coolant temperature sensor, vehicle speed sensor
- No driver fault for DMTL pump motor, DMTL change-over valves and tank vent
- No fault for tank vent (flow)

Possible fault causes
- DMTL - Tank leak diagnosis module faulty