Leak Detection Pump Pressure, Checking

Leak Detection Pump Pressure, Checking

Test conditions:

• Evaporative Emissions Tester (KLI 9210) with Adapter Hose (KLI 9210/55-2) connected to vehicle

• Valve - D - is at "Hold"





• Diagnostic mode 8 ended and vehicle running at idle

Fuel system must have no pressure for test. To release residual pressure, proceed as follows:

- Briefly open quick-release coupling - arrow - on Adapter Hose (KLI 9210/55-2) to release pressure in fuel system. The pressure gauge - D - must drop to 0 in. H 2O.





- Select Guided Function operating mode on evaporative emissions tester.

- Select "Check tank ventilation system for leaks" guided function.

- Activate test.

- Observe pressure gauge while test is running.

- The Leak Detection Pump (LDP) (V144) must pump fuel system up to min. 18 mbar (7 in. H2O).

- If pressure is not reached, check Leak Detection Pump (LDP) (V144) vacuum supply --> [ Leak Detection Pump Vacuum Supply, Checking ] Leak Detection Pump Vacuum Supply, Checking.

- If fuel system has no leaks and Leak Detection Pump (LDP) (V144) vacuum supply is OK, replace Leak Detection Pump (LDP) (V144).