VOLVO
ECM-843D - Starter motor relay. Signal too low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo C30 (2007–2013)2007Nur Motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Nur Motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Nur Motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Nur Motor: B5254T7
- Volvo S40 (2004–2013)2006–2007Nur Motor: B5254T3
- Volvo S40 (2004–2013)2008Nur Motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Nur Motor: B5254T7
- Volvo V50 (2004–2013)2006–2007Nur Motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Nur Motor: B5254T7
Was bedeutet der Fehlercode?
The engine control module (ECM) compares the voltage on the starter motor relay signal wire with a limit value at start. If the voltage stays below the limit for a certain time, the control module registers a fault and sets the code. The cause may be a short to ground or an open circuit in the signal wire, a faulty relay, an open circuit in the supply to the starter motor or a damaged control module.
Mögliche Ursachen
- The signal wire is shorted to ground
- Open circuit in the signal wire
- Open circuit in the supply to the starter motor
- Damaged starter motor relay
- Damaged control module
Was Sie tun können
- 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 for breaks, and use a multimeter against ground (the body) to confirm it is not shorted
- 4Check that the starter motor relay is undamaged and seated properly
- 5If the fault remains after these checks, have a workshop check the supply to the starter motor and the control module
Symptome, die Sie bemerken können1
- The engine does not start
Was der Fehler beeinflussen kann1
- Only manual starting is possible
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.