DME 7.8 DME 7.8 0 · 0-70P0447

DME 7.8 DME 7.8 0 0-70P0447 96 EVAP canister shutoff valve (output stage) - open circuit Diagnosis conditions • Engine running • Battery voltage greater than 7 V • Fuel tank ventilation active Possible fault cause ♦Wiring harness ♦Shutoff valve faulty ♦DME control module faulty Note! Fuel tank ventilation can be activated with the Porsche System Tester 2 in the ’Short test’ menu. Affected terminals Terminal IV/30 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check voltage supply for ♦Remove front right-hand wheel > 11 V Repair voltage sup- shutoff valve housing liner ⇒ Step 2 ply → End ♦Remove connector of shutoff valve ♦Measure voltage between shut- off valve plug Pin 2 and ground ♦Switch on the ignition 2093 P0447 0-70 page 1 Printed in Germany, 2000 p0447