Sunday, December 5, 2021

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1004


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



1599



Plausibility error between signal of temperature sensor in intake pipe and signal of outside temperature sensor (P0071)



Possible cause:



- Ambient temperature values are implausible.



Affected functions:



- Engine diagnosis



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Test 1: Ambient temperature



1. Ambient temperature



Test 1.1: Check component B14 (Ambient temperature display temperature sensor).



Test 1.2: Check component B2/5b1 (Intake air temperature sensor).



1.1. Check component B14 (Ambient temperature display temperature sensor).



Test prerequisites



- The power supply of component N10/1 (Driver-side SAM control unit with fuse and relay module) is OK.



- Fault code 9063 is current, and (or) at least one of the relevant actual values is not OK.



Test sequence



- Detach coupling at component B14 (Ambient temperature display temperature sensor).

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