VOLVO
ECM-950F - Accelerator pedal (AP) position sensor. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
7 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Vis modeller per årsmodell og motor (20)
- Volvo C70 Cabriolet (1998–2005)2000Kun motor: B5244S
- Volvo C70 Coupé (1998–2002)1999Kun motor: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Kun motor: B5244S
- Volvo S60 (2001–2009)2001Kun motor: B5244S, B5244S2
- Volvo S60 (2001–2009)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006–2008Kun motor: B5244SG
- Volvo S70 (1997–2000)1999Kun motor: B5254S DENSO
- Volvo S70 (1997–2000)2000Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)1999–2000Kun motor: B5244S, B5244S2
- Volvo S80 (1999–2006)2001Kun motor: B5244S, B5244S2, B5244SG
- Volvo S80 (1999–2006)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo S80 (1999–2006)2006Kun motor: B5244SG
- Volvo V70 (1997–2000)1999Kun motor: B5254S DENSO
- Volvo V70 (1997–2000)2000Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2001Kun motor: B5244S, B5244S2, B5244SG
- Volvo V70 (2000–2008)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006–2008Kun motor: B5244SG
Hva betyr feilkoden?
The engine control module (ECM) compares the two signals from the accelerator pedal position sensor, one analogue and one pulse-width modulated (PWM). If they differ by more than allowed for a longer time, the code is stored. A larger difference is allowed while the pedal is moving, for example during acceleration.
Mulige årsaker
- Connector on the analogue signal wire has worked loose or has high contact resistance
- Open circuit in the power supply to the accelerator pedal sensor
- Open circuit in the ground lead to the accelerator pedal sensor
- Fault on the PWM wire running from the engine control module (ECM) to the electronic throttle module (ETM)
- Defective system relay
- Defective accelerator pedal position sensor
Hva du kan gjøre
- 1Read out any other fault codes in the engine control module. If ECM-9180, ECM-918F, ECM-9520, ECM-9530 or ECM-9540 are stored, troubleshoot those first
- 2Check the connectors and wiring between the accelerator pedal sensor and the engine control module for loose connections, contact resistance and corrosion
- 3With a multimeter, check the pedal sensor's supply voltage and ground connections, and that no voltage difference exists between the ECM and the sensor
- 4If you have a diagnostic tool: press the pedal down slowly and follow both pedal signals in live data. They should track each other steadily without jumps
- 5After repair: clear the code, cycle the ignition off, on and off again, then test drive. A workshop can load upgraded software if one exists for the car
Symptomer du kan merke1
- Poor accelerator pedal response, and the engine reacts more sluggishly than normal when accelerating
Hva feilen kan påvirke3
- The throttle opens more slowly, since it is then controlled by only one of the PWM signals
- The throttle closes when braking
- The accelerator pedal position is ignored while the brake pedal is pressed
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