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".
  TEST -ID 05: TANK VENTILATION SYSTEM
  
  

  Test-ID 05:	Tank ventilation system	Specified value:
  		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 exceeded:

• EVAP canister system, checking for proper seal. See EVAP CANISTER SYSTEM, CHECKING FOR PROPER SEAL .
• Leak detection pump (LDP) -V144-. For checking, see LEAK DETECTION PUMP (LDP), CHECKING .