2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1861

1.1.3.4.1.8. Steering column module

Warning!Communication with ECU required.

2. Check component N80 (Steering column module).

Read and process fault code from control module N80 (Steering column module).

Possible cause and remedy

- Read and process fault code from control module N80 (Steering column module).

End of test

Part 1

No CAN message was received from control unit N80 (Steering column module).

Possible cause:

- Check the CAN communication with control unit N80 (Steering column module).

- Chassis CAN bus

Affected functions:

- CAN Communication

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Test 1: Engine compartment CAN test

Test 2: Chassis CAN bus

Test 3: CAN communication is faulty.

1. Engine compartment CAN test

Test 1.1: Engine compartment CAN test

1.1. Engine compartment CAN test

Test 1.1.1: Procedure in case of CAN faults

Test 1.1.2: Read current CAN configuration and CAN fault codes

Test 1.1.3: Further CAN test options

1.1.1. Procedure in case of CAN faults

Test 1.1.1.1: How do I quickly reach my goal?

Test 1.1.1.2: General test information

Test 1.1.1.3: General CAN fundamentals

Test 1.1.1.4: Possible aids and their usage

1.1.1.1. How do I quickly reach my goal?

How do I quickly reach my goal?First call up menu item 'Evaluation of CAN fault codes' in case of CAN timeout fault codes and communication

errors.The resulting tests must be performed.Menu item 'Further CAN test options' should only be called up if the above-specified tests do not

produce the desired result.Note:Menu item 'General test information' can be called up for an explanation of the different CAN fault types.

1.1.1.2. General test information

Notes on CAN fault codes:CAN timeout fault

- A CAN timeout fault code is set due to the absence of a CAN input signal.The cause of this may be not only the transmitter control unit, but

also the CAN networking.

- For example:No CAN message was received from control unit A.

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