Exhaust Flap, Checking

Exhaust Flap, Checking

Special tools, testers and auxiliary items required







- Vehicle Diagnostic, Testing and Information System VAS 5051 A with diagnostic cable VAS 5051/1

Work sequence
- Let engine run briefly so that required vacuum for test is present in vacuum reservoir.
- Switch off engine, connect Vehicle Diagnostic, Testing and Information System VAS 5051 A and select vehicle system "01 - engine electronics". Ignition must be switched on







Display on VAS 5051 A:
- In selection - 1 -, click on function "03 - output Diagnostic Test Mode (DTM)".
- Press button repeatedly until Exhaust Flap Valve 1 -N321- is activated.







- Operating rod - arrow - for exhaust flap must move back and forth at both rear mufflers.

If operating rod does not move:
- Check exhaust flap vacuum reservoir
- Check vacuum line to vacuum reservoir and to Exhaust Flap Valve 1 -N321- under left side trim in luggage compartment.
- Check Exhaust Flap Valve 1 -N321-
- End function "03 - output Diagnostic Test Mode (DTM)" by pressing button.
- Select "06 - End Output".
- Switch ignition off.