VOLVO
ECM-842C - Starter motor relay. Signal too high
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (9)
- 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)2006–2007Kun motor: B5254T3
- Volvo S40 (2004–2013)2008Kun motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Kun motor: B5254T7
- Volvo V50 (2004–2013)2006–2007Kun motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Kun motor: B5254T7
Hva betyr feilkoden?
The engine control module (ECM) checks the signal wire to the starter motor relay when the engine is started. If the voltage on the wire is too high for a certain time, the control module treats it as a fault and sets the code. The cause may be a wire shorted to supply voltage, a damaged starter motor relay or a damaged control module.
Mulige årsaker
- The signal wire is shorted to supply voltage
- Damaged starter motor relay
- Damaged control module
Hva du kan gjøre
- 1Read the code, clear it and check that it does not return at the next start
- 2With the ignition off, check the connectors to the starter motor relay for loose fit, oxidation and contact resistance
- 3Check the signal wire to the starter motor relay for a short to battery voltage; use a multimeter to confirm it has no contact with battery voltage
- 4Check that the starter motor relay is seated properly and not damaged
- 5If the fault remains after these checks, have a workshop check the control module
Symptomer du kan merke1
- The engine does not start
Hva feilen kan påvirke1
- Only manual starting is possible
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