VOLVO
CRM-C021 - Convertible Roof Module (CRM). Internal fault
System
Fahrwerk (Bremsen, Lenkung, Federung)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
1 ModellC70 (2006–2013)
Modelle nach Baujahr und Motor anzeigen (1)
Was bedeutet der Fehlercode?
Although the fault is labelled an internal fault in the control module, it relates to the supply voltage for several sensors. The code is only set when the supply to the sensors is switched off. The sensors are supplied in groups, so a short to supply voltage in one group's supply can cause the fault. The battery may then discharge and messages may appear in the display.
Mögliche Ursachen
- The supply voltage to sensors 6 and 18, or to sensors 1, 5 and 10, is shorted to supply voltage
- The sensors are supplied in groups, and one group has a fault
- Internal fault in the roof control module (CRM)
Was Sie tun können
- 1Read out and clear the fault code and check whether it returns
- 2With a multimeter you can check that the supply wires to the faulty group have no contact with voltage
- 3Look at the connectors to the sensors in that group for oxidation and loose connections
- 4Replace a faulty wire. If nothing is found, a workshop should replace the convertible roof module (CRM)
Symptome, die Sie bemerken können2
- Message in the display
- The battery discharges
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.