Test-ID 05: Tank ventilation system: Procedure

Connect diagnostic tester. See DIAGNOSTIC TESTER, CONNECTING .
Start engine and let run at idle for at least 15 minutes.
Under address word 33, select "Diagnostic 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.

TEST-ID 05: TANK VENTILATION SYSTEM

Test-ID 05:	Tank ventilation system	Specified value:
Test-ID 05:	Tank ventilation system	min.	max.
	Deviation of oxygen sensor control in direction "lean"	0.050	-
	Deviation of oxygen sensor control in direction "rich"	0.050	-

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 .
Leak detection pump (LDP) -V144-, checking, see LEAK DETECTION PUMP (LDP), CHECKING .