VOLVO
ECM-929D - Engine control module (ECM). Signal too low
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
9 modeliC30 (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–)
Pokaż modele wg rocznika i silnika (23)
- Volvo C30 (2007–2013)2007Tylko silnik: B5254T3
- Volvo C30 (2007–2013)2008–2013Tylko silnik: B5254T7
- Volvo C70 (2006–2013)2006–2007Tylko silnik: B5254T3
- Volvo C70 (2006–2013)2008–2013Tylko silnik: B5254T7
- Volvo S40 (2004–2013)2005–2007Tylko silnik: B5254T3
- Volvo S40 (2004–2013)2008Tylko silnik: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Tylko silnik: B5254T7
- Volvo S60 (2001–2009)2005–2006Tylko silnik: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2007Tylko silnik: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009Tylko silnik: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2005–2006Tylko silnik: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V50 (2004–2013)2005–2007Tylko silnik: B5254T3
- Volvo V50 (2004–2013)2008–2012Tylko silnik: B5254T7
- Volvo V70 (2000–2008)2005Tylko silnik: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006–2007Tylko silnik: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008Tylko silnik: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2005Wszystkie silniki oprócz: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Tylko silnik: B5244T4, B5254T2
- Volvo V70 XC / XC70 (2001–2007)2007Tylko silnik: B5254T2
- Volvo XC90 (2003–)2005–2006Tylko silnik: B5254T2, B6294T
- Volvo XC90 (2003–)2007–2012Tylko silnik: B5254T2
- Volvo XC90 (2003–)2013–2014Tylko silnik: B5254T9
- Volvo XC90 (2003–)2015
Co oznacza ten kod błędu?
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.
Możliwe przyczyny
- 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
Co możesz zrobić
- 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
Objawy, które możesz zauważyć2
- Malfunction indicator lamp (MIL) on
- Reduced performance
Na co może wpływać usterka2
- 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
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.