With Manufacturer's Scan Tool

Misfire Recognition

Special tools and equipment
- V.A.G 1551 scan tool (or VAG 1552 mobile scan tool) with VAG 1551/3B cable

Test sequence
- Connect V.A.G 1551 scan tool (VAG 1552). Start engine and select the Engine Control Module (ECM) using address word 01.

Indicated on display:

Rapid data transfer HELP
Select function XX

- Press buttons -0- and -8- to select "Read measuring value block" function 08. Press -Q- button to confirm input.

Indicated on display:

Read measuring value block
Enter display group number XXX

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

Indicated on display: (1 to 4 - display fields)

Read measuring value block 14 ->
1 2 3 4

- Check the total number of misfires in display field 3: Specification: 0 to 5
- Check the status of misfire recognition in display field 4: Specification: activated

If specified values are obtained:
- Press -> button.
- Press buttons -0- and -6- to select "End Output" function 06. Press -Q- button to confirm input.
- Switch ignition off.

If specified values are not obtained:
- Check spark plugs, Parts of ignition, removing and installing.
- Check ignition coils with power output stage.
- Check fuel injector.