DME 7.8 DME 7.8 0 · 0-128P1216

DME 7.8 DME 7.8 0 0-128P1216 153 Fuel Injector, Cylinder 4 - Above Limit Diagnosis conditions • Engine running • Battery positive voltage greater than 7 V Possible fault cause ♦Fuel injector (coil) short circuit ♦Short circuit to B+ in wiring ♦DME control module Affected terminals Terminal III/27 Note! Short to B+ 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 4 (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- short to B+ wiring harness (DME control ness module plug) → End ♦Remove connector of fuel injec- tor ♦Measure voltage between spe- 0 V cial tool 9637 pin III/27 and ⇒ Step 3 ground ♦Ignition on 2440 P1216 0-128 page 1 Printed in Germany – 1, 2000 p1216