DME 7.8 DME 7.8 0 · 0-18.3P0123

DME 7.8 DME 7.8 0 0-18.3P0123 Accelerator Pedal Potentiometer 1 – Above Limit Diagnosis conditions • Ignition on (approx. 30 sec.) • Battery positive voltage greater than 7 V Possible fault cause ♦Short circuit to B+ ♦Pedal sensor Affected terminals Terminal IV/8 Note! ♦The system operates in pedal sensor standby mode, i.e. the angle of the accelerator pedal is calculated from the residual position sensor signal. ♦The maximum pedal value is limited to 30 %. ♦The dynamic is limited. Diagnosis/Troubleshooting Work instruction Display OK If not OK 1 Check wiring from DME ♦Connect special tool 9637 to 0 V Repair wiring har- control module IV/8 to wiring harness (DME control Step 2. ness pedal sensor, Pin 2, for module plug). → End. short circuit to B+ ♦Switch on the ignition. ♦Measure voltage between spe- cial tool Pin IV/8 and ground 2 Replace pedal sensor → End. → End. 2078 P0123 0-18.3 page 1 Printed in Germany – 6, 2002 p0123