- X63/4 (CAN databus adapter connector, 2-pin)
- Test connectors and wiring for CAN of engine compartment CAN control modules.
- Control unit
Communication with ECU required ( Measuring system )
2. Check the CAN communication with control unit N93 (Central gateway control unit).
Warning!Communication with ECU required.
3. Central CAN test
Warning!Communication with ECU required.
EC421
The CAN signals sent from control unit Suspension system are incomplete.
Possible cause:
- N51/2 (ABC control module)
Affected functions:
- CAN Communication
- Automatic transmission Function
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Test 1: Fault in CAN communication with control unit N51/2 (ABC control module).
1. Fault in CAN communication with control unit N51/2 (ABC control module).
Operation number of operation texts and work units or standard texts and flat rates:27-0641WARNING
- This is not a function error of control module Y3/8n4 (Fully integrated transmission control (VGS) control unit) and does not justify
replacement.
Possible cause for the entry of this event code
- Operational fault of component N51/2 (ABC control module)
Possible measures
- Read out fault memory of control unit N51/2 (ABC control module).
- Process displayed fault codes in control module N51/2 (ABC control module).
End of test
Part 1
The CAN signal for start enable sent to the drive authorization system by transmission control is missing or invalid.
Possible cause:
- Engine compartment CAN databus
Affected functions:
- DAS Function
- CAN Communication
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Test 1: Engine compartment CAN test
1. Engine compartment CAN test
Test 1.1: Procedure in case of CAN faults
Test 1.2: Evaluation of CAN fault codes
Test 1.3: Further CAN test options
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