2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 2619

- 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 )

E0562

The voltage supply of circuit 87 has undervoltage.

Possible cause:

- Local undervoltage of component Y3/8n4 (Fully integrated transmission control (VGS) control unit)

Affected functions:

- Battery / On-board electrical system

- CAN Communication

- Automatic transmission Function

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Test 1: Check power supply at control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit).

1. Check power supply at control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit).

Operation number of operation texts and work units or standard texts and flat rates:27-0641Test sequence

- Switch off ignition.

- Separate plug connection at transmission.

- Measure voltage in transmission wiring harness using a multimeter.

- Switch on ignition.

Measure direct voltage with multimeter between 5 and 4Specified value:

- Voltage[8,5...16,4] V

Question

- Is the measurement value OK?

YES

The measurement value is OK.Possible cause of fault

- The conductors in the electrohydraulic control unit are interrupted.

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