Ignition System: Testing and Inspection

Misfiring Recognition Function, Checking

Work sequence
- Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics" from list. Engine must be idling.


Indicated on VAS 5051:







- From list -1- select diagnostic function "08 - Reading measured value block".

Indicated on VAS 5051:







1 - Enter display group
- Use keypad -2- to enter "014" for "Display group number 014" and confirm by touching Q key.

Indicated on VAS 5051:







- Check display in zones -3- and -4-.

Display Group 014:

If reading matches specification:
- Terminate function "08 - Reading measured value block" by touching <- key.

If reading does not match specification:
- Touch s key to switch to display group 015.

Checking misfiring recognition of individual cylinders

Indicated on VAS 5051:







- Check display in zones -1- to -4-.

Display Group 015:

- Touch s key to switch to display group 017.

Indicated on VAS 5051:







- Check display in zones -1- to -4-.

Display Group 016:

- Touch s key to switch to display group 017.

Indicated on VAS 5051:







- Check display in zones -1- to -4-.

Display Group 017:

- Terminate function "08 - Reading measured value block" by touching <- key.

Evaluation of display groups 014, 015, 016 and 017: