Test ID 05 - Tank Ventilation System
Test Prerequisites
- Coolant temperature must be 80 to 110 C → Diagnostic Mode 01 - Read Current System Data ; PID 5, Coolant temperature.
- Throttle valve angle 12.0 to 16.0% → Diagnostic Mode 01 - Read Current System Data ; PID 17: Throttle valve position (absolute)
Procedure
- Connect diagnostic tester → Diagnostic Tester, Connecting .
- Start engine and let run at least 15 minutes at idle.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select "Test-ID 05: Tank ventilation system".
- Check specified values at idle.
| Test-ID 05: | Tank ventilation system | Specified value: | |||||||
|---|---|---|---|---|---|---|---|---|---|
| min. | max. | ||||||||
| Deviation of oxygen sensor control in direction lean | Tester display | ||||||||
| Deviation of oxygen sensor control in direction rich | Tester display | ||||||||
- End diagnosis and switch ignition off.
If specified values are not reached:
- EVAP canister system, checking for proper seal → EVAP System Diagnostic Leak Test, Performing .
- Leak detection pump (LDP) V144 , checking → Leak Detection Pump, Checking .