Test 2: Check Component Secondary Air Valve

Check component Secondary air valve

Test prerequisite
- The vacuum system is leaktight.
- Operate engine at idling speed.
- Coolant temperature > 80�C

Test sequence
- Test component Secondary air valve by actuation.

Specified value
- O2 sensor voltage upstream of TWC After approx. 5s unter 100 m V
- Retrieve actuation with key F2.

Communication with ECU required.