DME 7.8 DME 7.8 0 · 0-60P0414

DME 7.8 DME 7.8 0 0-60P0414 85 Electric change-over valve - below limit Diagnosis conditions • Engine running • Battery voltage greater than 7 V Possible fault cause ♦Short circuit to ground Note! The triggering wire for the electric change-over valve is monitored. Affected terminals Terminal III/14 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check wire from DME ♦Remove connector of electric ∞ Ω Repair wiring har- control module, Pin III/14, change-over valve → End ness to electric change-over → End ♦Measure resistance between valve for short circuit to DME control module Pin III/14 ground and electric change-over valve plug Pin 2 85 Electric change-over valve - above limit Diagnosis conditions • Engine running • Battery voltage greater than 7 V Possible fault cause ♦Short circuit to B+ Note! The triggering wire for the electric change-over valve is monitored. 2644 P0414 0-60 page 1 Printed in Germany, 2000 p0414