VOLVO
ECM-940A - Brake pedal position sensor. Signal outside its permitted range
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:
5 ModelleS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (7)
- Volvo S60 (2001–2009)2002–2003, 2006Nur Motor: D5244T, D5244T2
- Volvo S60 (2001–2009)2004–2005Nur Motor: D5244T, D5244T2, D5244T3
- Volvo S80 (1999–2006)2002–2006Nur Motor: D5244T, D5244T2
- Volvo V70 (2000–2008)2002–2003, 2006Nur Motor: D5244T, D5244T2
- Volvo V70 (2000–2008)2004–2005Nur Motor: D5244T, D5244T2, D5244T3
- Volvo V70 XC / XC70 (2001–2007)2003–2006Nur Motor: D5244T
- Volvo XC90 (2003–)2003–2006Nur Motor: D5244T
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- 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
Was Sie tun können
- 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
Symptome, die Sie bemerken können2
- Cruise control does not work
- 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.