2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 3275

- Transmission mode selection

- Drive position selection

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Test 1: Remedial action in the event of implausible signals from control unit N30/4 (Electronic Stability Program control unit)

1. Remedial action in the event of implausible signals from control unit N30/4 (Electronic Stability Program control unit)

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 N15/3 (ETC [EGS] control unit) and does not justify replacement.

Possible cause for the entry of this event code

- Operational fault of component N30/4 (Electronic Stability Program control unit)

Possible measures

- Read out fault memory of control unit N30/4 (Electronic Stability Program control unit).

- Process displayed fault codes in control module N30/4 (Electronic Stability Program control unit).

End of test

253900

The fuel pressure sensor of the low pressure circuit is malfunctioning.

Test 1: Check component B4/7 (Fuel pressure sensor).

Test 2: Possible cause:

- B4/7 (Fuel pressure sensor)

Affected functions:

- Engine diagnosis

- Fuel system

1. Check component B4/7 (Fuel pressure sensor).

Test 1.1: Check component B4/7 (Fuel pressure sensor) using actual value.

Test 1.2: Check power supply of component B4/7 (Fuel pressure sensor).

Test 1.3: Test wiring to component B4/7 (Fuel pressure sensor).

1.1. Check component B4/7 (Fuel pressure sensor) using actual value.

Warning!Communication with ECU required.

1.2. Check power supply of component B4/7 (Fuel pressure sensor).

Test prerequisite

- The actual value is not o.k.

Test sequence

- Switch off ignition.

- Unplug connector of pressure sensor B4/7 (Fuel pressure sensor).

- Measure direct voltage with multimeter between sockets (B4/7) 3 and (B4/7) 1

- Switch on ignition.

Specified values

- Voltage : [4.8 ... 5.3] V

Question

- Is the measurement value OK?