VOLVO
ECM-929D - Engine control module (ECM). Signal too low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
9 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (23)
- Volvo C30 (2007–2013)2007Nur Motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Nur Motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Nur Motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Nur Motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo S40 (2004–2013)2008Nur Motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Nur Motor: B5254T7
- Volvo S60 (2001–2009)2005–2006Nur Motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2007Nur Motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009Nur Motor: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2005–2006Nur Motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V50 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Nur Motor: B5254T7
- Volvo V70 (2000–2008)2005Nur Motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006–2007Nur Motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008Nur Motor: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2005Alle Motoren außer: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Nur Motor: B5244T4, B5254T2
- Volvo V70 XC / XC70 (2001–2007)2007Nur Motor: B5254T2
- Volvo XC90 (2003–)2005–2006Nur Motor: B5254T2, B6294T
- Volvo XC90 (2003–)2007–2012Nur Motor: B5254T2
- Volvo XC90 (2003–)2013–2014Nur Motor: B5254T9
- Volvo XC90 (2003–)2015
Was bedeutet der Fehlercode?
This code concerns the ECM's internal governor that controls the throttle angle, although it is titled signal too low. The ECM stores it if the governor is found damaged, or if the governor's control signal goes to an extreme while the throttle is being controlled. It is checked with the engine running and can be permanent or sporadic.
Mögliche Ursachen
- The throttle sticks or is blocked by oil film or dust
- Contact resistance or oxidation in the connections between the ECM and the throttle unit
- Open circuit, or short to ground or supply voltage, in the wiring to the throttle motor
- The throttle motor wires shorted to each other
- Damaged throttle unit
- Faulty software in the ECM
Was Sie tun können
- 1If you have a diagnostic tool: read the fault status with the engine running. Fault found means permanent, and No fault found means sporadic and not active right now
- 2Check the connectors between the ECM and the throttle unit: are they secure, and is there oxidation or corrosion
- 3Make sure the throttle moves freely and is not blocked by any object. Clean as needed
- 4Use a multimeter on the throttle motor wires for open circuit, contact with ground or plus, and a short between the two wires
- 5If you have a diagnostic tool: after a repair, check in the parameters that the throttle unit adaptation is complete and shows OK. The adaptation is carried out by a workshop
- 6If the fault remains, faulty software in the ECM may be the cause. A workshop can download and install new software
Symptome, die Sie bemerken können2
- Malfunction indicator lamp (MIL) on
- Reduced performance
Was der Fehler beeinflussen kann2
- The ECM cuts power to the throttle motor, and the throttle goes to its spring-loaded return position
- The fuel supply may be temporarily cut off, and this shut-off is reversible
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.