VOLVO
ECM-940A - Brake pedal position sensor. Signal outside its permitted range
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:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (7)
- Volvo S60 (2001–2009)2002–2003, 2006Kun motor: D5244T, D5244T2
- Volvo S60 (2001–2009)2004–2005Kun motor: D5244T, D5244T2, D5244T3
- Volvo S80 (1999–2006)2002–2006Kun motor: D5244T, D5244T2
- Volvo V70 (2000–2008)2002–2003, 2006Kun motor: D5244T, D5244T2
- Volvo V70 (2000–2008)2004–2005Kun motor: D5244T, D5244T2, D5244T3
- Volvo V70 XC / XC70 (2001–2007)2003–2006Kun motor: D5244T
- Volvo XC90 (2003–)2003–2006Kun motor: D5244T
Hva betyr feilkoden?
The ECM checks the brake pedal position sensor signal, which reaches it over CAN from the brake control module (BCM), against the brake light switch position. The code is set if the signal is missing or unreasonable compared with the switch. The fault may lie in the BCM, the brake light switch or how it is adjusted.
Mulige årsaker
- Fault in the brake control module (BCM)
- Brake light switch incorrectly adjusted
- Brake light switch has come loose from its pedal mounting
- Play, contact resistance or oxidation in the brake light switch connector
- Break in the power supply reaching the brake light switch
- Damaged brake light switch
Hva du kan gjøre
- 1Read the fault codes in the brake control module (BCM) and the central electronic module (CEM) first, and deal with them
- 2If the BCM shows no fault code, make sure the brake light switch is properly adjusted and fixed to the pedal mount
- 3Check the brake light switch connector for play and oxidation, and use a multimeter to check that the supply and signal wire have no open circuit or short
- 4If you have a diagnostic tool: read the brake light switch status in live data while the brake is pressed and released. The switch should close when the pedal is pressed
- 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 work
- Brake light constantly on
Hva feilen kan påvirke1
- Cruise control is switched off while the fault is active
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