VOLVO
CEM-1E04 - Communication with the lamp switch module. Signal missing. Intermittent fault
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
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 CEM lost communication with the light switch module (LSM) shortly after the ignition was switched on. The fault is intermittent, so it may not be present right now. The beam height control and the light switch may then stop working.
Możliwe przyczyny
- A broken or shorted wire between the light switch and the CEM
- A defective communication unit in the light switch
- A defective communication unit in the CEM
Co możesz zrobić
- 1Check that the light switch responds: switch the headlights on and off and see whether they react to the controls
- 2Check that the connectors in the cable between the light switch and the CEM are seated and not chafed or corroded
- 3Use a multimeter to check that the cable to the light switch has no break or short to ground
- 4With a diagnostic tool, read the fault codes and see whether communication with the light switch works
- 5After the work, clear the code and check that the beam height control works
Objawy, które możesz zauważyć2
- The beam height control does not work
- The light switch does not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.