VOLVO
ECM-911A - Throttle unit communication. Faulty communication
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
9 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008), V70 XC (1998–2000), V70 XC / XC70 (2001–2007)
Vis modeller per årsmodell og motor (22)
- Volvo C70 Cabriolet (1998–2005)1999–2002
- Volvo C70 Coupé (1998–2002)1999–2002
- Volvo S60 (2001–2009)2001Alle motorer unntatt: D5244T
- Volvo S60 (2001–2009)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006–2008Kun motor: B5244SG
- Volvo S70 (1997–2000)1999Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5254S DENSO, B5254T
- Volvo S70 (1997–2000)2000Alle motorer unntatt: D5252T MSA 15.8
- Volvo S80 (1999–2006)1999–2000Alle motorer unntatt: D5252T MSA 15.8
- Volvo S80 (1999–2006)2001Alle motorer unntatt: D5244T, D5252T MSA 15.8
- Volvo S80 (1999–2006)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo S80 (1999–2006)2006Kun motor: B5244SG
- Volvo V70 (1997–2000)1999Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5234T8, B5254S DENSO, B5254T
- Volvo V70 (1997–2000)2000Alle motorer unntatt: D5252T MSA 15.8
- Volvo V70 (2000–2008)2000Alle motorer unntatt: D5252T MSA 15.8
- Volvo V70 (2000–2008)2001Alle motorer unntatt: D5244T, D5252T MSA 15.8
- Volvo V70 (2000–2008)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006–2008Kun motor: B5244SG
- Volvo V70 XC (1998–2000)1999–2000
- Volvo V70 XC / XC70 (2001–2007)2001
Hva betyr feilkoden?
The throttle unit module (ETM) and the engine control module (ECM) communicate over the CAN network. If the throttle module registers a serious disturbance, meaning the CAN communication is blocked, the code is saved in the throttle module. If the network does not work until the next driving cycle, the information may be missing in the ECM. The code can be set together with other fault codes.
Mulige årsaker
- Loose connections or contact resistance in the connectors to the CAN network
- Open circuit in one or both CAN signal cables
- One or both CAN signal cables are short-circuited to ground, voltage or each other
- Interference on the CAN signal cables
- A defective node in the CAN network
Hva du kan gjøre
- 1First remedy the CAN network fault codes in the central electronic module (CEM) and the driver information module (DIM), as this code can follow from them
- 2Check the connectors on the CAN network for loose connections and oxidation, and check the wiring for chafing and damage
- 3Use a multimeter to check that the two CAN cables are not open-circuit or short-circuited to ground or voltage
- 4Check the battery condition and charge, as low voltage can make the system relay switch on late. For longer troubleshooting, a battery charger intended for car batteries can keep the voltage stable
- 5Erase the codes, then reset: ignition off for three minutes, on and off again, then three more minutes. Add two minutes if the electric cooling fan has been running.
- 6Test drive the car. If the fault returns, ask the workshop whether upgraded software is available for the car, as it has adjustments that make it more tolerant of brief CAN interference
Symptomer du kan merke5
- The accelerator pedal is ignored when the brake pedal is pressed
- The cruise control cannot be activated
- The idle is uneven and the car jerks during engine braking
- The electronic throttle system (ETS) warning lamp lights, on C70 and S/V70 -2000 only
- Throttle response is very poor and top speed is reduced, but only together with ECM-9180 or ECM-918F
Hva feilen kan påvirke3
- Engine speed is regulated by fuel cut-off, with the injectors switched off one at a time, and the throttle follows the accelerator pedal position
- The cruise control is switched off during the driving cycle when the fault was detected, and it works again the next time the car starts if the fault is gone
- Together with ECM-9180 or ECM-918F, the throttle module disables throttle motor control, the throttle goes to its mechanical stop position and engine speed is limited
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.