2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1442

Warning!Communication with ECU required.

2766

Excessive rpms have occurred at component Y3/8n2 (Internal speed sensor (VGS)).

Possible cause:

- Y3/8n2 (Internal speed sensor (VGS))

Affected functions:

- Automatic transmission Function

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Test 1: Remedial action on overspeed of component Y3/8n2 (Internal speed sensor (VGS))

1. Remedial action on overspeed of component Y3/8n2 (Internal speed sensor (VGS))

Operation number of operation texts and work units or standard texts and flat rates:27-0641Possible cause and remedy

- Erase fault memory in control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit)

- Conduct a road test with the vehicle.During the road test, drive the engine from gear 1 to gear 3 in the engine speed cutoff range.

- Read out fault memory of control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit).

Question

- Is control unit EGS electronic transmission control indicating the current fault code 2766?

YES

Preconditions

- Control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit) is indicating the current fault code 2766.

Remedy

- Performance of SCN coding

END OF TEST

NO

Preconditions

- Control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit) is not indicating any fault codes.

Remedy

- Read out fault memory of control unit Engine management.