VOLVO
REM-7A20 - Subwoofer X-feed, signal or temperature too high
Układ
Tylny moduł elektroniczny (REM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
1 modelXC90 (2003–)
Pokaż modele wg rocznika i silnika (1)
Co oznacza ten kod błędu?
The rear electronic module (REM) feeds the subwoofer module (SUB) through a driver stage. The fault is stored when the output is shorted to supply voltage, or when the driver stage overheats, and the module then switches the output off.
Możliwe przyczyny
- Signal cable shorted to supply voltage
- Internal fault in the rear electronic module (REM)
Co możesz zrobić
- 1Read and note any other fault codes before clearing them, so a workshop can use them in its fault-finding
- 2With the ignition off, use a multimeter to check that the wiring between the REM and the subwoofer module (SUB) has no contact with supply voltage
- 3Look for damaged insulation on the wiring, which can cause intermittent or permanent short circuits
- 4If the fault remains, have a workshop with diagnostic equipment check the REM and the subwoofer
Objawy, które możesz zauważyć2
- Subwoofer output does not match the chosen setting
- No sound from the subwoofer
Na co może wpływać usterka2
- The control module switches off the output to the subwoofer
- On cars built from late September 2005, the output is switched off permanently if the fault has been present over many ignition cycles, until the fault code is cleared
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.