DME 7.8 DME 7.80 · Work instruction Display OK

DME 7.8 DME 7.80 Work instruction Display OK If not OK 3 Check voltage supply and ♦Remove connector of EVAP can- Battery positive volt- wiring. ister purge valve age ♦Switch on the ignition ♦Measure voltage between pin 1 and ground ♦Connect special tool 9637 to 0 - 5 Ω wiring harness ♦Measure resistance at pin III/3 and EVAP canister purge valve connector, pin 2 4 Check EVAP canister ♦Disconnect hose from EVAP can- The vacuum must purge valve ister purge valve to intake sys- not fall below 0.5 tem at EVAP canister purge bar after 10 minutes valve ♦Remove connector of EVAP can- ister purge valve ♦Connect special tool 9160/1 to EVAP canister purge valve ♦Generate vacuum of approx. 0.7 bar 5 Check hose line between ♦Undo hose at intake system The vacuum must EVAP canister purge valve not fall below 0.5 ♦Remove connector of EVAP can- and air intake system bar after 10 minutes ister purge valve ♦Connect special tool 9160/1 to EVAP canister purge valve ♦Generate vacuum of approx. 0.7 bar 0-65 page 2 2023 P0441 p0441 Printed in Germany – 1, 2000