9/13/19

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 1282

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 1282



- Voltage[80锟斤拷 C]: [0.90...0.87] V



- Voltage[90锟斤拷 C]: [0.70...0.67] V



- Voltage[100锟斤拷 C]: [0.54...0.25] V



- Voltage[110锟斤拷 C]: [0.42...0.40] V



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



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



- B11/4 (Coolant temperature sensor)



End of test



1.2. Check signal lines on component B11/4 (Coolant temperature sensor).



Test sequence



- Switch on ignition.



Status of relevant actual value:



- Coolant temperature sensor ( Signal voltage ):Warning! Communication with ECU required.



Specified value



- If the connection is unplugged at component B11/4 (Coolant temperature sensor), the value is approx. 5 V.



- Bridge pin 1 in pin 2 at the unplugged connection of component B11/4 (Coolant temperature sensor).The value is< 0.5 V.



Question



- 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?