VOLVO
ECM-929D - Engine control module (ECM). Signal too low
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
9 modellerC30 (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–)
Vis modeller per årsmodell og motor (23)
- Volvo C30 (2007–2013)2007Kun motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Kun motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Kun motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Kun motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo S40 (2004–2013)2008Kun motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Kun motor: B5254T7
- Volvo S60 (2001–2009)2005–2006Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2007Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009Kun motor: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2005–2006Kun motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V50 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Kun motor: B5254T7
- Volvo V70 (2000–2008)2005Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006–2007Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008Kun motor: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2005Alle motorer unntatt: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Kun motor: B5244T4, B5254T2
- Volvo V70 XC / XC70 (2001–2007)2007Kun motor: B5254T2
- Volvo XC90 (2003–)2005–2006Kun motor: B5254T2, B6294T
- Volvo XC90 (2003–)2007–2012Kun motor: B5254T2
- Volvo XC90 (2003–)2013–2014Kun motor: B5254T9
- Volvo XC90 (2003–)2015
Hva betyr feilkoden?
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.
Mulige årsaker
- 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
Hva du kan gjøre
- 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
Symptomer du kan merke2
- Malfunction indicator lamp (MIL) on
- Reduced performance
Hva feilen kan påvirke2
- 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
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.