With Manufacturer's Scan Tool

Air System For Leaks (Un-Metered Air), Checking

Check with engine leak detector spray G 001 800 A1


CAUTION!
Part numbers are for reference only, always check with your parts department for latest information.


NOTE:
- The vacuum in the intake system will cause the leak detector spray to be drawn in with the outside air. The leak detector spray reduces the combustibility of the mixture. This leads to a drop in engine speed and to a significant increase of the CO content.
- The safety precautions listed on the container must be adhered to.


- Connect VAG1551 (VAG1552) and select engine electronics control module with the "Address word" 01. When doing this the engine must be running at idling speed. (Connect scan tool and selecting engine electronics control module.) Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAS 5051/ VAG 1551 Scan Tool" Testing and Inspection

Indicated on display:


Rapid data transmission HELP
Select function XX


- Press buttons -0- and -8- to select function "Read Measuring Value Block" and confirm entry with -Q- button.

Indicated on display:


Read Measuring Value Block
Enter display group number XXX


- Press buttons -0-, -0- and -1- to select "display group number 001" and confirm entry by pressing -Q- button.

Indicated on display: (1 ...4 = Display fields)


Read Measuring Value Block 1 ->
1 2 3 4


- Note engine speed in display field 1.
- Systematically spray parts of intake system with engine leak detection spray.

If the engine speed does not change:
- Press -> button.
- Press buttons -0- and -6- to select function "End Output" and confirm entry with -Q- button.

If the engine speed drops:
- Press -> button.
- Press buttons -0- and -6- to select function "End Output" and confirm entry with -Q- button.
- Check sprayed areas of intake system for leaks and rectify if necessary.