Manufacturer Code Charts: 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.
- Process displayed fault codes in control module Engine management.
END OF TEST