Misfire Detection, Checking

Misfire Detection, Checking

Special tools and equipment







- VAS5051 with VAS5051/1

Test sequence
- Connect testing and information system VAS5051 and select vehicle system "01 - Engine electronics" in selection. Engine must be running at idling speed.

Indicated on display:
Rapid data transfer HELP
Select function XX

- Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press Q button to confirm input.

Indicated on display:
Read Measuring Value Block Q
Input display group number XXX

- Press buttons -0-, -1- and -4- to input "display group number 14" and press Q button to confirm input.

Indicated on display:
Read Measuring Value Block 14 ->
1 2 3 4

- Check misfire detection.







If the specified value is reached:
- Press -> button.

Indicated on display (function selection):
Rapid data transfer HELP
Select function XX

If specified value is not attained:
- To change to display group 015, press button.

Checking misfire recognition of the individual cylinder







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







- To change to display group 016, press s button.







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







- Exit function "08 - Read measured value block" by pressing <- button.

Evaluating display groups 014, 015 and 016, Display field 3: