2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1005

- Connect resistance simulator to the connector of component B14 (Ambient temperature display temperature sensor).

- Connect resistance substitution unit between sockets (B14)1 and (B14) 2

- Adjust resistance values one after another and compare them with the actual value.

Status of relevant actual value:

- B14 (Ambient temperature display temperature sensor):Warning! Communication with ECU required.

Specified value

- Resistor9.6 kohms:Temperature: [0锟斤拷 C]

- Resistor5.9 kohms:Temperature: [10锟斤拷 C]

- Resistor3.7 kohms:Temperature: [20锟斤拷 C]

- Resistor2.4 kohms:Temperature: [30锟斤拷 C]

- Resistor1.6 kohms:Temperature: [40锟斤拷 C]

Question:Is the actual value o.k.?

YES

The actual value is okay.Possible cause and remedy

- Component B14 (Ambient temperature display temperature sensor) is defective.

End of test

NO

The actual value is not o.k.Possible cause and remedy

- Check lines from B14 (Ambient temperature display temperature sensor) to N10/1 (Driver-side SAM control unit with fuse and relay module)

for Short circuit or open circuit.

- Component N10/1 (Driver-side SAM control unit with fuse and relay module) is defective.