VOLVO
ECM-941C - Stop lamp switch. Faulty signal
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug gilt.
Gilt für folgende Modelle:
7 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008)
Modelle nach Baujahr und Motor anzeigen (13)
- Volvo C30 (2007–2013)2007–2011Nur Motor: B5244S4
- Volvo C70 (2006–2013)2006Alle Motoren außer: B5254T3
- Volvo C70 (2006–2013)2007–2010Nur Motor: B5244S4, B5244S5
- Volvo C70 (2006–2013)2011Nur Motor: B5244S4
- Volvo S40 (2004–2013)2004Nur Motor: B5244S4, B5244S5
- Volvo S40 (2004–2013)2005–2010Nur Motor: B5244S4, B5244S5, B5244S7
- Volvo S60 (2001–2009)2003–2006Nur Motor: B5244S, B5244S2, B5244S6
- Volvo S60 (2001–2009)2007–2009Nur Motor: B5244S, B5244S2
- Volvo S80 (1999–2006)2003–2006Nur Motor: B5244S, B5244S2
- Volvo V50 (2004–2013)2004Nur Motor: B5244S4, B5244S5
- Volvo V50 (2004–2013)2005–2010Nur Motor: B5244S4, B5244S5, B5244S7
- Volvo V70 (2000–2008)2003–2006Nur Motor: B5244S, B5244S2, B5244S6
- Volvo V70 (2000–2008)2007–2008Nur Motor: B5244S, B5244S2
Was bedeutet der Fehlercode?
The ECM checks the brake pedal position sensor signal against the brake light switch. The signal reaches the ECM over CAN from the brake control module (BCM). The code is set for values that are wrong, unreasonable or do not match. Although the code concerns the brake light switch, the fault may lie in the sensor or the BCM.
Mögliche Ursachen
- Contact resistance in the connections to the brake position sensor
- Brake light switch incorrectly fitted
- Brake light switch incorrectly adjusted
- Damaged brake position sensor
- Contact resistance or oxidation at the brake light switch connections
- Short to ground or open circuit in the brake light switch wiring
Was Sie tun können
- 1If you have a diagnostic tool: activate the read-out of brake pedal position and switch status with the engine running. The switch should show OFF when untouched and ON when pressed
- 2Check that the brake light switch is correctly fitted and adjusted. It should be closed when the pedal is pressed
- 3Check the connectors at the brake position sensor, the brake light switch and the ECM for play, contact resistance and oxidation
- 4If the brake position sensor gives a wrong value, start fault tracing in the brake control module (BCM)
- 5The brake system is safety-critical. If the fault remains or the brake light stays on, have a workshop check it, and do not drive with a safety fault in the brakes
Symptome, die Sie bemerken können2
- Cruise control does not function at all
- Brake light constantly on
Was der Fehler beeinflussen kann1
- Cruise control is switched off while the fault is active
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.