Ignition System: Testing and Inspection

MISFIRE DETECTION, CHECKING

Special tools, testers and auxiliary items
- VAG 1551/1552 scan tool with VAG 1551/3 adapter cable

Test sequence
- Connect VAG 1551 scan tool (VAG 1552) and select "Engine Electronics" address word 01. When doing this the engine must be running at idle speed. Refer to "On-Board Diagnostics II With VAG 1551". Testing and Inspection

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 HELP
Input display group number XXX

- Press buttons -1-, -1- and -0- to input display group 110 and press -Q- button to confirm input.

Indicated on display (1-4 = Display fields)

Read Measuring Value Block 110 ->
1 2 3 4

- Check the specifications for misfire detection (display fields 2-4).





- Read the readiness code. If DTC memory has been erased, repair must be verified via appropriate display group See Readiness code, creating. Refer to "On-Board Diagnostics II With VAG 1551". Testing and Inspection
- Press -> button.
- Press buttons -0- and -6- for the "End Output" function and press -Q- button to confirm input.

Evaluating Display Group 110: