VOLVO
ECM-0320 - Engine speed (RPM) sensor signal. Signal missing
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (13)
- Volvo C30 (2007–2013)2007–2009Kun motor: B4184S11, B4184S8, B4204S3
- Volvo C30 (2007–2013)2010Kun motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo C30 (2007–2013)2011–2013Kun motor: B4204S3, B4204S4
- Volvo S40 (2004–2013)2005Kun motor: B4184S11
- Volvo S40 (2004–2013)2006Kun motor: B4184S11, B4184S8
- Volvo S40 (2004–2013)2007–2009Kun motor: B4184S11, B4184S8, B4204S3
- Volvo S40 (2004–2013)2010Kun motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo S40 (2004–2013)2011–2012Kun motor: B4204S3, B4204S4
- Volvo V50 (2004–2013)2005Kun motor: B4184S11
- Volvo V50 (2004–2013)2006Kun motor: B4184S11, B4184S8
- Volvo V50 (2004–2013)2007–2009Kun motor: B4184S11, B4184S8, B4204S3
- Volvo V50 (2004–2013)2010Kun motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo V50 (2004–2013)2011–2012Kun motor: B4204S3, B4204S4
Hva betyr feilkoden?
The engine control module (ECM) receives no signal from the impulse sensor, which tells it how fast the engine is turning and where the crankshaft is. Without that signal the control module does not know when to fire the ignition and inject fuel. The code is set both at start and while driving, and the causes are poor contact or a damaged impulse sensor.
Mulige årsaker
- Contact resistance or oxidation in the connections to the impulse sensor
- Damaged impulse sensor
Hva du kan gjøre
- 1Read out the fault code, erase it and check whether it returns at the next start
- 2Switch off the ignition and unplug the impulse sensor connector. Check the connector for looseness, contact resistance and oxidation
- 3Look for chafing, pinched areas and breaks in the wiring from the impulse sensor, especially where it runs close to the engine
- 4Use a multimeter to check that the signal wires from the impulse sensor have no open circuit and no short to ground or voltage
- 5With a diagnostic tool, read the crank speed signal in live data while cranking. If it is missing, the signal is not arriving
- 6If the fault remains, have a workshop with diagnostic equipment check and, if needed, replace the impulse sensor
Symptomer du kan merke2
- The malfunction indicator lamp (MIL) is lit
- The starter motor cranks but the engine does not start
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