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2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 558


- Engine diagnosis



-------------------------------------------------



Test 1: Combustion misfirings



1. Combustion misfirings



Warning!Communication with ECU required.



722.9 (7-gear) ETC2 as of 2008



Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective.



Possible cause:



- Y3/8n4 (Fully integrated transmission control (VGS) control unit)



Affected functions:



- Automatic transmission Function



-------------------------------------------------



Test 1: Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty



1. Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty



Test prerequisites



- First of all process all other current fault codes.



POSSIBLE CAUSES



- Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective.



Preconditions



- Print out the initial quick test log before processing the fault code 0641.



- Create control unit log.



Important notes before commencing repair measures



- Always use the same diagnostic unit after the repair measure.



Continue with button F2



Sequence



- Data are being read from the old control unit.



Start process with button F2.



1. No further information available.



ME9.7



Misfiring of cylinder 3 : Damages TWC (P0303)



Possible cause:



- Combustion misfirings



Affected functions:



- Engine diagnosis



-------------------------------------------------



Test 1: Combustion misfirings



1. Combustion misfirings

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