Work procedure
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- Connect diagnostic tester. See CONNECT DIAGNOSTIC TESTER .
- Start engine and let run at idle for at least 15 minutes.
- In diagnostic function "33 - OBD", select "Mode 6: Check test results of components that are not continuously monitored".
- Select the "Test-ID 05: Tank ventilation system".
- Check specified values at idle.
TANK VENTILATION SYSTEM SPECIFIED VALUES
| Tank ventilation system | Specified value |
|---|---|
| Deviation of oxygen sensor control in direction "lean" | min: 0.05 |
| Deviation of oxygen sensor control in direction "rich" | min: 0.05 |
- End diagnosis and switch ignition off.
If the specified values are not reached:
- EVAP canister system, checking for proper seal. See EVAP CANISTER SYSTEM, CHECKING FOR PROPER SEAL .
- Check Leak detection pump (LDP) -V144-. See LEAK DETECTION PUMP (LDP) -V144-, CHECKING .