DME 7.8 DME 7.8 0 · 0-138P1237

DME 7.8 DME 7.8 0 0-138P1237 150 Fuel Injector, Cylinder 1 - Open Circuit Diagnosis conditions • Engine running • Battery positive voltage greater than 7 V Possible fault cause ♦Fuel injector (coil) open circuit ♦Open circuit in wiring ♦DME control module Affected terminals Terminal III/41 Note! Open circuit causes the fuel injector to be continually closed. Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check fuel injector ♦Remove connector of fuel injec- 11 - 13 Ω Replace fuel injector tor 1 (at 20 °C) → End ⇒ Step 2 ♦Connect special tool V.A.G. 1315 A/1 ♦Measure resistance at special tool V.A.G. 1315 A/1 2 Check wiring harness for ♦Connect special tool 9637 to Repair wiring har- open circuit wiring harness (DME control ness module plug) → End ♦Remove connector of fuel injec- tor ♦Measure resistance between 0 - 5 Ω special tool 9637 pin III/41 and ⇒ Step 3 fuel injector plug pin 2 2440 P1237 0-138 page 1 Printed in Germany – 1, 2000 p1237