Vad är det för årsmodell på denna C30?
Hur började felet?
Började gå dåligt under körning för att sen stanna?
Felkoderna på din bild måste vara från CEM.
Har du kontakt med ECM-modulen och kan kolla den om felkoder?
Har du kollat att säkringar är hela till CEM och ECM?
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Volvo DTC CEM-DE11
Make: Volvo
Code: CEM-DE11
Definition:
Communication With ECM Control Module. Signal Missing
Description:
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that communication with the engine control module (ECM) is not operating.
Note! The diagnostic trouble code (DTC) indicates a fault in the communication across the CAN network and does not isolate an individual node.
Do not replace the central electronic module (CEM) unless fault-tracing in VIDA isolates the central electronic module (CEM) as not functioning.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Cause:
No power supply to the engine control module (ECM)
Open-circuit in the ground lead to the engine control module (ECM)
Contact resistance in the terminals
Open-circuit in the wiring for the CAN high speed network to the engine control module (ECM)
The engine control module (ECM) is not intended for this car (for example a used control module with different software/hardware).
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Volvo DTC CEM-4F33
Make: Volvo
Code: CEM-4F33
Definition:
Battery Temperature, Faulty Signal
Description:
The Central electronic module (CEM) calculates the battery temperature using the outdoor temperature, vehicle speed, power supply position and engine coolant temperature.
The control module checks the status of the input signals to determine the reliability of the calculation.
The diagnostic trouble code (DTC) is stored if the control module detects that: One or more input signals missing for more than 2 minutes.
One or more input signals are of poor quality.
The control module's test for the diagnostic trouble code (DTC) starts in the event of: Ignition switch position II.
Cause:
Internal fault in transmitting sensor.
Internal fault in the brake control module (BCM).
Internal fault in the central electronic module (CEM).
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Volvo DTC CEM-3A00
Make: Volvo
Code: CEM-3A00
Definition:
ECM Software. Faulty Signal
Description:
The central electronic module (CEM) checks the software in the engine control module (ECM).
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers faulty or modified software in the engine control module (ECM).
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Cause:
Incorrect software check sum.