E122000

CAN signal 'Ambient temperature' from control unit N22/7 (Automatic air conditioning control and operating unit) is implausible.


Possible cause:

- N22/7 (Comfort AAC pushbutton control module)
Affected functions:

- Power generation

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Test 1: CAN bus communication

1. CAN bus communication
Possible cause

- Functional CAN fault
Remedy

- Read fault memory of control unit N22/7 (Comfort AAC pushbutton control module) and rectify faults.
- Check function impairments using actual values or actuations and restore functionality.
- If present, check codings and correct if necessary.
Note

- A functional CAN fault code is set because of an implausible CAN input signal.
End of test