VOLVO
ECM-4320 - Leak diagnostic unit, valve. Signal too low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
7 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008)
Modelle nach Baujahr und Motor anzeigen (11)
- Volvo C30 (2007–2013)2007–2011Nur Motor: B5244S4
- Volvo C70 (2006–2013)2006–2011Nur Motor: B5244S4
- Volvo S40 (2004–2013)2004Nur Motor: B5244S4
- Volvo S40 (2004–2013)2005–2010Nur Motor: B5244S4, B5244S7
- Volvo S60 (2001–2009)2003–2006Nur Motor: B5244S, B5244S6
- Volvo S60 (2001–2009)2007–2009Nur Motor: B5244S
- Volvo S80 (1999–2006)2003–2006Nur Motor: B5244S
- Volvo V50 (2004–2013)2004Nur Motor: B5244S4
- Volvo V50 (2004–2013)2005–2010Nur Motor: B5244S4, B5244S7
- Volvo V70 (2000–2008)2003–2006Nur Motor: B5244S, B5244S6
- Volvo V70 (2000–2008)2007–2008Nur Motor: B5244S
Was bedeutet der Fehlercode?
The engine control module keeps watch on the drive signal for the reset valve inside the leak diagnostic pump. When the signal is too low the fault code is set and the leak diagnosis is interrupted. The fault can be caused by the signal wire being short-circuited to ground or having an open circuit.
Mögliche Ursachen
- Signal wire short-circuited to ground
- Open circuit in the signal wire
- Signal wire short-circuited to supply voltage, where the signal is too high
- Damaged leak diagnostic pump
Was Sie tun können
- 1Have you got a diagnostic tool: switch the valve on with the ignition on and listen for a click; if no click comes, the fault is most likely still active
- 2Check the connectors at the engine control module and the leak diagnostic pump for contact resistance and oxidation
- 3Look for chafed or pinched wiring to the reset valve, especially where the signal wire may have touched ground
- 4Use a multimeter to check that the signal wire has no contact with ground and is not open-circuited
- 5Have a workshop check the engine control module software and clear any faults before the leak troubleshooting continues
- 6Have a workshop replace the leak diagnostic pump if the wiring is intact but the fault remains
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) is on
Was der Fehler beeinflussen kann1
- The leak diagnosis is interrupted
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.