VOLVO
PSM-0004 - Hall sensor 4. Faulty signal. Intermittent fault
Układ
Moduł elektrycznego fotela (PSM)
Modele Volvo, których dotyczy ten kod błędu
Ten kod błędu ma różne znaczenie w zależności od modelu, rocznika lub silnika. Wybierz znaczenie, które dotyczy Twojego samochodu.
Dotyczy następujących modeli:
5 modeliS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Co oznacza ten kod błędu?
The fault is intermittent: the signal from the Hall sensor in motor 4, which controls the seat front edge height, has been lost on an earlier occasion but is not present now. Motor 4 has been activated and running without any Hall pulses being detected. Automatic seat operation then does not work.
Możliwe przyczyny
- Defective Hall sensor in motor 4
- Signal cable short-circuited to ground or supply voltage
- Broken wire on the signal line running to the Hall sensor
Co możesz zrobić
- 1Clear the fault code and run the seat to see whether it returns.
- 2Check that the connectors to the seat control module and to motor 4 are firmly seated and show no signs of oxidation.
- 3Gently move the wiring to motor 4 while the seat is run. If the operation stops or the fault code returns, the wiring is the likely cause.
- 4Use a multimeter to check that the signal cable has no open circuit and no contact with ground or supply voltage.
- 5If you have a diagnostic tool: run motor 4 and check that the Hall sensor value counts up and down in both directions.
- 6If the fault returns despite these checks, have a workshop check the control module and the motor.
Objawy, które możesz zauważyć2
- Automatic seat operation does not work
- Automatic operation of the other motors works as normal
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.