VOLVO
ECM-931F - Clutch pedal switch B. Signal missing
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
3 ModelleC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (3)
Was bedeutet der Fehlercode?
Although the code is titled signal missing, it is set when clutch pedal switch B stays activated for a long time while driving with a gear engaged. The switch detects when the clutch pedal is pressed to its lower position, and it tells the system whether the pedal is pressed or released for automatic engine start/stop.
Mögliche Ursachen
- Loose connection or oxidation in the connector
- Short circuit or open circuit in the connections to the sensor
- Damaged clutch pedal switch B
Was Sie tun können
- 1Check that the fuses are intact. Their locations are in the handbook or on the fuse box cover
- 2Test the cruise control and automatic start/stop with the controls, or on a test drive, so you can see how the fault shows
- 3Check the connector at clutch pedal switch B: is it secure, and is there play or oxidation in the connector
- 4Use a multimeter to check that the wiring to the clutch pedal switch has no open circuit and no short to ground or plus
- 5If you have a diagnostic tool: read clutch pedal switch B in live data while the clutch is pressed and released. The value should change when the pedal moves
Symptome, die Sie bemerken können4
- Driving with automatic engine start/stop does not work
- Idling with automatic engine start/stop does not work
- Starting with autostart does not work
- Cruise control does not disengage
Was der Fehler beeinflussen kann1
- The automatic engine start/stop function is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.