VOLVO
ECM-P02523A - Injection Pump Fuel Metering Control A Range/Performance. FM (Frequency Modulated) / PWM (Pulse Width Modulated) Failures. Incorrect has too many pulses
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
5 modeliS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Pokaż modele wg rocznika i silnika (6)
- Volvo S80 (2007–)2007–2009Tylko silnik: D5244T4, D5244T5
- Volvo V70 (2008–)2008–2009Tylko silnik: D5244T4, D5244T5
- Volvo XC60 (2009–)2009Wszystkie silniki oprócz: B6304T2
- Volvo XC70 (2008–)2008Wszystkie silniki oprócz: B6324S
- Volvo XC70 (2008–)2009Tylko silnik: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Tylko silnik: D5244T18, D5244T5
Co oznacza ten kod błędu?
The ECM monitors the injection pump. The fault is set when the control module detects that the PWM signal to the fuel flow control valve is incorrect, for example with too many pulses. It may be caused by loose connections or interference on the signal wire.
Możliwe przyczyny
- Loose connections or contact resistance in the connections on the PWM signal wire
- Interference on the PWM signal wire
Co możesz zrobić
- 1Read the code, clear it and road test to see whether it returns
- 2Look at the connectors on the PWM signal wire for loose connections and oxidation
- 3Look for chafing on the wire to the fuel flow control valve, where interference can occur
- 4If you have a diagnostic tool: read the fuel flow control valve drive in live data at idle, and see whether the value jumps
- 5Check that the battery is fully charged and that the earth connections are clean and tight
- 6If the fault remains, have a workshop check the fuel flow control valve and the PWM signal with diagnostic equipment
Objawy, które możesz zauważyć2
- The car feels poor to drive, with reduced performance and lack of power
- The car hesitates, surges or runs jerkily
Na co może wpływać usterka1
- A calculated value is used instead of the measured one
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.