Knock Control, Checking

Knock Control, Checking

- Connect VAG1551 or VAG1552 Scan Tool (ST) and press buttons -0- and -1- to insert "Engine Electronics" address word 01 (engine running at idle). Refer "Scan Tool Testing/Scan Tool Connecting and Initial Checks/ Connecting VAG1551 or VAG1552 Scan Tool" Testing and Inspection

Indicated on display


Rapid data transfer HELP
Selecting function XX


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

Indicated on display


Read Measuring value Block
Input display group number XXX


- Press buttons -0-, -1- and -3- to input display group number 13 (013), and press -Q- button to confirm input.

Indicated on display (1-4 = display fields)


Read Measuring Value Block 13 ->
1 2 3 4


- Check specified values for knock control for bank 1 (display fields 1-4):
- Road test.


WARNING!
- When driving or riding in an airbag equipped vehicle, NEVER hold the scan tool or other test equipment in your hands or lap while in motion. Objects between you and the airbag increase the risk of injury in an accident.
- During a test drive in an airbag-equipped vehicle, test equipment must always be fastened to and operated from the rear seat by a second technician.







- Press -3- button to advance to display group 14.

- Check specified values for knock control for bank 2 (display fields 1-4):







Evaluating display groups 13 and 14







- Press -3- button to advance to display group 15.