VOLVO
CPM-U001088 - Medium Speed CAN Communication Bus. Bus Signal / Message Failures. Bus off
Układ
Ogrzewanie postojowe (CPM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
2 modeleV40 (2013–), V40 Cross Country (2013–)
Pokaż modele wg rocznika i silnika (2)
Co oznacza ten kod błędu?
The heater control module has lost contact with the CAN network, because the communication has been blocked by a serious disturbance. The control module then disconnects itself (bus-off) and stays shut down. The fault may be caused by a short or open circuit in the CAN wiring, an internal fault in the heater control module, or a fault in another control module on the same part of the network.
Możliwe przyczyny
- Short circuit between the CAN wires
- Open circuit in one of the CAN wires
- Internal fault in the heater control module
- Fault in another control module on the same part of the CAN network
Co możesz zrobić
- 1With the ignition off, look at the connectors and CAN wiring to the heater for chafing, damage and corrosion.
- 2If you have a diagnostic tool, you can see whether other control modules show communication faults. If so, the fault is probably in the network.
- 3Check that the battery has good voltage, as low voltage can disturb communication.
- 4Have a workshop measure the resistance in the CAN network and check the traffic on the wiring with diagnostic equipment.
- 5Do not replace the heater control module until a workshop has established whether the fault lies in another module on the network.
Objawy, które możesz zauważyć2
- The parking heater does not work
- Poor heating in the cabin
Na co może wpływać usterka3
- The control module disconnects itself from the network and stays shut down until its power is cut
- The heater's function is blocked
- The control module makes new communication attempts when it receives power again
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.