2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 678

- Is the actual value o.k.?

YES

The actual value is okay.Further possible causes of fault

- Check internal resistance of component B11/4 (Coolant temperature sensor).

NO

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

- Check lines from component B11/4 (Coolant temperature sensor) to component N3/10 (ME-SFI [ME] control unit).

End of test

1.3. Check internal resistance of component B11/4 (Coolant temperature sensor).

Test prerequisite

- The actual value is not o.k.

Test sequence

- Switch off ignition.

- Disconnect connector at component B11/4 (Coolant temperature sensor).

- Measure resistance with multimeter between pins ( B11/4 ) 1 and ( B11/4 ) 2

Specified values

- Resistor(20锟斤拷 C): [3030...3130]ohms

- Resistor(30锟斤拷 C]: [1950...2050]ohms

- Resistor(40锟斤拷 C): [1275...1375]ohms

- Resistor(50锟斤拷 C): [850...950]ohms

- Resistor(60锟斤拷 C): [600...650]ohms

- Resistor(70锟斤拷 C): [420...460]ohms

- Resistor(80锟斤拷 C): [305...335]ohms

- Resistor(90锟斤拷 C): [220...240]ohms

- Resistor(100锟斤拷 C): [160...180]ohms

- Resistor(110锟斤拷 C): [120...140]ohms

Question

- Are the measurement values OK?

YES

The measurement values are OK.End of test

NO

The measurement values are not OK.Possible cause and remedy

- B11/4 (Coolant temperature sensor)

End of test

0859

B11/4 (Coolant temperature sensor) (P0117)

Possible cause:

- B11/4 (Coolant temperature sensor)

Affected functions:

- Engine cooling

-------------------------------------------------

Test 1: Check component B11/4 (Coolant temperature sensor).

1. Check component B11/4 (Coolant temperature sensor).

Test 1.1: Check component B11/4 (Coolant temperature sensor) using actual value.