VOLVO
ECM-941C - Stop lamp switch. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
7 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008)
Vis modeller per årsmodell og motor (13)
- Volvo C30 (2007–2013)2007–2011Kun motor: B5244S4
- Volvo C70 (2006–2013)2006Alle motorer unntatt: B5254T3
- Volvo C70 (2006–2013)2007–2010Kun motor: B5244S4, B5244S5
- Volvo C70 (2006–2013)2011Kun motor: B5244S4
- Volvo S40 (2004–2013)2004Kun motor: B5244S4, B5244S5
- Volvo S40 (2004–2013)2005–2010Kun motor: B5244S4, B5244S5, B5244S7
- Volvo S60 (2001–2009)2003–2006Kun motor: B5244S, B5244S2, B5244S6
- Volvo S60 (2001–2009)2007–2009Kun motor: B5244S, B5244S2
- Volvo S80 (1999–2006)2003–2006Kun motor: B5244S, B5244S2
- Volvo V50 (2004–2013)2004Kun motor: B5244S4, B5244S5
- Volvo V50 (2004–2013)2005–2010Kun motor: B5244S4, B5244S5, B5244S7
- Volvo V70 (2000–2008)2003–2006Kun motor: B5244S, B5244S2, B5244S6
- Volvo V70 (2000–2008)2007–2008Kun motor: B5244S, B5244S2
Hva betyr feilkoden?
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.
Mulige årsaker
- 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
Hva du kan gjøre
- 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
Symptomer du kan merke2
- Cruise control does not function at all
- Brake light constantly on
Hva feilen kan påvirke1
- Cruise control is switched off while the fault is active
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.