2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 973

- Switch off ignition.

- Detach coupling at component B2/5 (Hot film mass air flow sensor).

- Measure direct voltage with multimeter between sockets (B2/5) 2 and (B2/5) 1

- Switch on ignition.

Specified value

- Voltage[11.0...15.0] V

Question

- Is the measurement value OK?

YES

The actual value is okay.Further possible causes of fault

- Unmetered air

- Signal wire

- B2/5 (Hot film mass air flow sensor)

End of test

NO

The measurement value is not OK.Possible cause and remedy

- N10/1f43 (Fuse 43)

- Cable for voltage supply

End of test

2. Check component M16/6 (Throttle valve actuator).

Test 2.1: Check component M16/6 (Throttle valve actuator) using actual value.

Test 2.2: Check component M16/6m1 (Actuator motor) by means of actuation.

Test 2.3: Check internal resistance of component M16/6m1 (Actuator motor).

Test 2.4: Check internal resistance of component M16/6 (Throttle valve actuator).

Test 2.5: Test voltage supply of the potentiometers of component M16/6 (Throttle valve actuator).

2.1. Check component M16/6 (Throttle valve actuator) using actual value.

Warning!Communication with ECU required.