Code 13 (Pedal Position Sensor)
PEDAL POSITION SENSOR POTENTIOMETERExplanation
This defect code is stored when the control unit detects opening or closing of the Pedal Value Sender (PWG) switch and this does not comply with the calculated PWG angle or does not correspond to the switch plausibility.
Effect: When defect code is set (Electronic Throttle Control (EML) warning lamp "ON"): Output reduction by limited EML Throttle Valve (DK) opening angle.
NOTE: Take particular care when checking the PWG potentiometer (status monitoring) to ensure that one of the two switches is always "ON" (both switches can also be "ON").
Troubleshooting
- Check PWG switch and PWG potentiometer (status monitoring)
- Check voltage supply for PWG potentiometer, PWG switch and kick-down switch (approx. 5 V ) from the EML control unit to the pedal position sensor at the pedal position sensor.
- Check wires from the EML control unit to the pedal position sensor.
- Check PWG switch and PWG potentiometer for continuity (potentiometer test with oscilloscope).
- Proceed with other displayed scan tool diagnostic instructions where applicable.