VOLVO
ECM-P057126 - Brake Switch A Circuit. General Signal Failures. Signal rate of change below threshold
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
3 modellerS60 (2011–), S80 (2007–), V70 (2008–)
Vis modeller per årsmodell og motor (9)
- Volvo S60 (2011–)2011–2012Kun motor: B5254T5
- Volvo S80 (2007–)2007–2008Kun motor: B5254T6
- Volvo S80 (2007–)2009Kun motor: B5254T6, B5254T8
- Volvo S80 (2007–)2010–2011Kun motor: B5254T10, B5254T11, B5254T8
- Volvo S80 (2007–)2012Kun motor: B5254T10
- Volvo V70 (2008–)2008Kun motor: B5254T6
- Volvo V70 (2008–)2009Kun motor: B5254T6, B5254T8
- Volvo V70 (2008–)2010–2011Kun motor: B5254T10, B5254T11
- Volvo V70 (2008–)2012Kun motor: B5254T10
Hva betyr feilkoden?
The ECM checks that the signals from the brake pedal sensor and the brake light switch are reliable. The code is set while the engine is running when the module finds a fault in the circuit to the brake pedal sensor or the brake light switch, or in the CAN communication with the brake control module (BCM). Cruise control is switched off while the fault is active.
Mulige årsaker
- The cause may lie in the BCM or the CEM
- Contact resistance or oxidation in the connections between the ECM and the brake light switch
- Open circuit in the power supply to the brake light switch
- Open circuit or short to ground or supply voltage in the wire to the brake light switch
- Brake light switch incorrectly fitted
- Damaged brake light switch
Hva du kan gjøre
- 1Check that the fuses are intact
- 2If you have diagnostic equipment: read the fault codes in the BCM and CEM and deal with them first
- 3If you have diagnostic equipment: read the brake light switch status in live data and check that it shows OFF when the pedal is released and ON when it is pressed
- 4Check that the brake light switch is fitted correctly and look for loose or corroded connectors
- 5Use a multimeter to check that the wire to the brake light switch has no open circuit or short to ground or supply voltage
- 6If the fault remains, have a workshop check the brake light switch, since the fault concerns the brake system
Symptomer du kan merke1
- Cruise control does not work at all
Hva feilen kan påvirke1
- Cruise control is switched off
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