DME 7.8 DME 7.80 · Diagnosis/troubleshooting

DME 7.8 DME 7.80 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 - 5 Ω Repair wiring har- control module to temper- wiring harness (DME control ⇒ Step 3 ness ature sensor for continu- module plug) → End ity ♦Remove plug connection of tem- perature sensor ♦Measure resistance between special tool 9637 Pin III/17 and temperature sensor plug Pin 2 ♦Measure resistance between special tool 9637 Pin III/5 and temperature sensor plug Pin 1 3 Check wiring from DME ♦Connect special tool 9637 to ∞ Ω Repair wiring har- control module to temper- wiring harness (DME control ⇒ Step 4 ness ature sensor for short to module plug) → End ground ♦Remove plug connection of tem- perature sensor ♦Measure resistance between Pin III/5 and ground 4 Replace DME control module ⇒ Step 5 5 Perform adaptation ♦Switch on the ignition → End ♦Wait one minute ♦Do not press the accelerator ♦Switch off the ignition for at least 10 seconds ♦Read out the fault memory 0-37 page 2 1709 P0197 p0197 Printed in Germany, 2000