Misfiring Recognition, Checking

Misfire Recognition, Checking

Special tools and equipment







- VAS5051 Vehicle diagnosis, testing and information system with VAS5051/1 Adapter

Work sequence

- Connect VAS5051 tester, Vehicle Diagnostic, Testing and Information System VAS 5051, Connecting and Selecting Functions and select vehicle system "01 - Engine electronics". Engine must run at idle.







Display on VAS5051:
- Select diagnostic function "08 - read measured value block" in selection -1-.







Display on VAS5051:
1 - Enter display group. Max. input value = 255
- Select function "014" in button field -2- for "display group number 014" and press Q button to confirm input.







Display on VAS5051:
- Check misfire recognition in display fields 3 and 4.







If specified value is obtained:
- Press <- button to end function "08 - Read measuring value block".

If specified value is not obtained:
- Press s button to change into display group 015.

Checking misfire recognition of the individual cylinders







Display on VAS5051:
- Check misfire recognition in display fields 1 to 4.







- Press s button to change into display group 016.







Display on VAS5051:
- Check misfire recognition in display fields 1 and 4.







- Press <- button to end function "08 - Read measuring value block".

Evaluation of display groups 014, 015 and 016: