DME 7.8 DME 7.8 0 · 0-38P0198

DME 7.8 DME 7.8 0 0-38P0198 125 Oil temperature sensor - above limit Diagnosis conditions • Idle speed • Time elapsed after engine start-up greater than 5 minutes Possible fault cause ♦Temperature sensor faulty ♦Wiring harness ♦DME control module faulty Affected terminals Terminal III/5 and III/17 Resistance values 60 2.8 - 3.5 kΩ °C 90 1.0 - 1.3 kΩ °C 120 0.4 - 0.6 kΩ °C Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check temperature sen- ♦Connect special tool 9637 to 2.8 - 3.5 kΩ Replace tempera- sor wiring harness (DME control (at 60 °C) ture sensor module plug) ⇒ Step 2 → End ♦Measure resistance between Pin III/17 and Pin III/5 2 Check wiring from DME ♦Connect special tool 9637 to 0 V Repair wiring har- control module to temper- wiring harness (DME control ⇒ Step 3 ness ature sensor for short to module plug) → End B+ ♦Remove plug connection of tem- perature sensor ♦Switch on the ignition ♦Measure voltage between Pin III/ 5 and ground 1709 P0198 0-38 page 1 Printed in Germany, 2000 p0198