WARNING! - Turn turbocharger tester on and select measuring range -I- (absolute
- Connect test hose to connection flange -I-.
Hoses must be connected so there is no possibility of leaks, otherwise
incorrect readings may result. Ensure test hose is not pinched at the hood and/or window.By pressing the memory button "M" on the turbocharger tester, the last
test value is stored until either memory button "M" is pressed again or
the turbocharger tester is shut off. A blinking comma in the display field indicates a value has been
stored. An arrow appears in the top left corner of the display field if the
turbocharger tester battery voltage drops below the allowed
specification. Before testing, drive vehicle briskly for at least 3 km (approx. 2 miles)
without frequent stops. Always use a second technician to take measurements via the
VAG1397A turbocharger tester when test-driving vehicle for this
test. Follow "WARNING!" Page 21
ge 8 of 50 Turbochar
Special tool LKI9210 (Evaporative system
leak detector), preliminary set-up
- Connect smoke generator leads to vehicle
With system filled with smoke:
Special tool VAG 1687, connecting to pressure adapter VAG 1687/1
For illustrations purposes VAG is shown lying in the engine compartment.
In practice the tool should be hung from the hood. - Turn valve to test -black arrow-.
- Press smoke generator button to fill system with smoke (see
instructions printed on tester).
- Remove smoke generator hose and connect VAG1687 quickly to
prevent smoke from leaking out Page 21
- Connect VAG 1687 quickly to prevent smoke from leaking out.
VAG 1687 is shown connected to VAG 1687/1 -black arrow-
Shop air supply will be connected to VAG 1687 -at white arrow-
- Perform pressure test Page 21
ge 23 of 50 Turbochar