VOLVO
ECM-821B - System relay. Signal missing
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
8 modellerC70 (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 (13)
- Volvo C70 (2006–2013)2006Kun motor: B5254T3
- Volvo S40 (2004–2013)2005–2006Kun motor: B5254T3
- Volvo S60 (2001–2009)2005–2006Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S80 (1999–2006)2005–2006Kun motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V50 (2004–2013)2005–2006Kun motor: B5254T3
- Volvo V70 (2000–2008)2005Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 XC / XC70 (2001–2007)2005Alle motorer unntatt: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Kun motor: B5244T4, 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?
The ECM monitors the feed through the system relay and finds it too low. The fault may come from the charging system, contact resistance in the connections, a break in the signal wire or a damaged relay. The starter cranks but the engine will not run.
Mulige årsaker
- Faulty charging system
- Contact resistance in the connections
- Break in the signal wire to the system relay
- Damaged system relay
Hva du kan gjøre
- 1Check the battery voltage and condition
- 2Look for loose or corroded connectors at the system relay
- 3Using a multimeter, check that the signal wire to the system relay is not broken
- 4Check that the generator charges, as a faulty charging system can cause the fault
- 5If the fault remains, have a workshop try a new system relay
Symptomer du kan merke1
- The starter cranks but the engine does not start
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