P0117
B11/4 (Coolant temperature sensor) : Short circuit to ground (P0117)
Possible cause:
B11/4 (Coolant temperature sensor)
R48 (Twodisk thermostat heating element)
The cooling performance of the engine cooling system is poor.
Affected functions:
Engine diagnosis
Test 1: A guided test is not available at present.
Test 2: Check component B11/4 (Coolant temperature sensor).
Test 3: Check component R48 (Twodisk thermostat heating element).
Test 4: The cooling performance of the engine cooling system is poor.
1. A guided test is not available at present.
Note:A guided test is not available at present.
2. Check component B11/4 (Coolant temperature sensor).
Test 2.1: Check component B11/4 (Coolant temperature sensor) using actual value.
Test 2.2: Check signal lines on component B11/4 (Coolant temperature sensor).
Test 2.3: Check internal resistance of component B11/4 (Coolant temperature sensor).
2.1. Check component B11/4 (Coolant temperature sensor) using actual value.
Test prerequisite
The actual value is not o.k.
Test sequence
Switch on ignition.
Status of relevant actual value:
Coolant temperature:Warning! Communication with ECU required.
Coolant temperature sensor ( Signal voltage ):Warning! Communication with ECU required.
Specified values
Voltage[20?C]: [3.45...3.32] V
Voltage[30?C]: ..[2.93...2.82] V
Voltage[40?C]: [2.41...2.32] V
Voltage[50?C]: [1.93...1.86] V
10.52SS
Page 3902010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 391
Voltage[60?C]: [1.51...1.46] V
Voltage[70?C]: [1.18...1.13] V
Voltage[80?C]: [0.90...0.87] V
Voltage[90?C]: [0.70...0.67] V
Voltage[100?C]: [0.54...0.25] V
Voltage[110?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 (MESFI [ME] control unit)
B11/4 (Coolant temperature sensor)
End of test
2.2. 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 (MESFI [ME] control unit).
End of test
2.3. 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? C): [3030...3130]ohms
Resistor(30? C]: [1950...2050]ohms
Resistor(40? C): [1275...1375]ohms
Resistor(50? C): [850...950]ohms
Resistor(60? C): [600...650]ohms
Resistor(70? C): [420...460]ohms
Resistor(80? C): [305...335]ohms2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Resistor(90? C): [220...240]ohms
Resistor(100? C): [160...180]ohms
Resistor(110? 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
3. Check component R48 (Twodisk thermostat heating element).
Test 3.1: Component R48 (Twodisk thermostat heating element) is mechanically damaged or it sticks.
Test 3.2: Test current consumption of component R48 (Twodisk thermostat heating element).
3.1. Component R48 (Twodisk thermostat heating element) is mechanically damaged or it sticks.
Test 3.1.1: R48 (Twodisk thermostat heating element) : Coolant temperature is too high.
Test 3.1.2: R48 (Twodisk thermostat heating element) : Coolant temperature is not reached.
3.1.1. R48 (Twodisk thermostat heating element) : Coolant temperature is too high.
Warning!Communication with ECU required.
3.1.2. R48 (Twodisk thermostat heating element) : Coolant temperature is not reached.
Warning!Communication with ECU required.
3.2. Test current consumption of component R48 (Twodisk thermostat heating element).
Figure legend
A ConnectionTest cable 35pin socket box
001 Sockets of component N3/10 (MESFI [ME] control unit)
05 35pin socket box
050 126pin socket box
108 Test cable 266 589 01 63 00
N3/10 (MESFI [ME] control unit)
II 163ConnectionTest cable
III 64126ConnectionTest cable
Warning!
Connection A of test cable 108 may NOT be connected to connection B of the 126pin socket box (050).
Page 3922010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
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Page 393
Test sequence
Switch off ignition.
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Measure direct current with multimeter between sockets [F.4] 100 and [M.54] 54 of the 126pole socket box tester.
Switch on ignition.
Specified value:
Amperage[0.6...1.2] A
Question
Is the measurement value OK?
YES
The measurement value is OK.End of test
NO
The measurement value is not OK.Possible cause and remedy
K40/4f44 (Fuse 44)
K40/4kM (Circuit 30z relay)
Check lines from component N3/10 (MESFI [ME] control unit) to component R48 (Twodisk thermostat heating element).
R48 (Twodisk thermostat heating element)
End of test2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
4. The cooling performance of the engine cooling system is poor.
4. No further information available.
B11/4 (Coolant temperature sensor) : Short circuit to ground (P0117)
Possible cause:
B11/4 (Coolant temperature sensor)
R48 (Twodisk thermostat heating element)
The cooling performance of the engine cooling system is poor.
Affected functions:
Engine diagnosis
Test 1: A guided test is not available at present.
Test 2: Check component B11/4 (Coolant temperature sensor).
Test 3: Check component R48 (Twodisk thermostat heating element).
Test 4: The cooling performance of the engine cooling system is poor.
1. A guided test is not available at present.
Note:A guided test is not available at present.
2. Check component B11/4 (Coolant temperature sensor).
Test 2.1: Check component B11/4 (Coolant temperature sensor) using actual value.
Test 2.2: Check signal lines on component B11/4 (Coolant temperature sensor).
Test 2.3: Check internal resistance of component B11/4 (Coolant temperature sensor).
2.1. Check component B11/4 (Coolant temperature sensor) using actual value.
Test prerequisite
The actual value is not o.k.
Test sequence
Switch on ignition.
Status of relevant actual value:
Coolant temperature:Warning! Communication with ECU required.
Coolant temperature sensor ( Signal voltage ):Warning! Communication with ECU required.
Specified values
Voltage[20?C]: [3.45...3.32] V
Voltage[30?C]: ..[2.93...2.82] V
Voltage[40?C]: [2.41...2.32] V
Voltage[50?C]: [1.93...1.86] V
10.52SS
Page 3902010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 391
Voltage[60?C]: [1.51...1.46] V
Voltage[70?C]: [1.18...1.13] V
Voltage[80?C]: [0.90...0.87] V
Voltage[90?C]: [0.70...0.67] V
Voltage[100?C]: [0.54...0.25] V
Voltage[110?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 (MESFI [ME] control unit)
B11/4 (Coolant temperature sensor)
End of test
2.2. 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 (MESFI [ME] control unit).
End of test
2.3. 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? C): [3030...3130]ohms
Resistor(30? C]: [1950...2050]ohms
Resistor(40? C): [1275...1375]ohms
Resistor(50? C): [850...950]ohms
Resistor(60? C): [600...650]ohms
Resistor(70? C): [420...460]ohms
Resistor(80? C): [305...335]ohms2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Resistor(90? C): [220...240]ohms
Resistor(100? C): [160...180]ohms
Resistor(110? 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
3. Check component R48 (Twodisk thermostat heating element).
Test 3.1: Component R48 (Twodisk thermostat heating element) is mechanically damaged or it sticks.
Test 3.2: Test current consumption of component R48 (Twodisk thermostat heating element).
3.1. Component R48 (Twodisk thermostat heating element) is mechanically damaged or it sticks.
Test 3.1.1: R48 (Twodisk thermostat heating element) : Coolant temperature is too high.
Test 3.1.2: R48 (Twodisk thermostat heating element) : Coolant temperature is not reached.
3.1.1. R48 (Twodisk thermostat heating element) : Coolant temperature is too high.
Warning!Communication with ECU required.
3.1.2. R48 (Twodisk thermostat heating element) : Coolant temperature is not reached.
Warning!Communication with ECU required.
3.2. Test current consumption of component R48 (Twodisk thermostat heating element).
Figure legend
A ConnectionTest cable 35pin socket box
001 Sockets of component N3/10 (MESFI [ME] control unit)
05 35pin socket box
050 126pin socket box
108 Test cable 266 589 01 63 00
N3/10 (MESFI [ME] control unit)
II 163ConnectionTest cable
III 64126ConnectionTest cable
Warning!
Connection A of test cable 108 may NOT be connected to connection B of the 126pin socket box (050).
Page 3922010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 393
Test sequence
Switch off ignition.
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Measure direct current with multimeter between sockets [F.4] 100 and [M.54] 54 of the 126pole socket box tester.
Switch on ignition.
Specified value:
Amperage[0.6...1.2] A
Question
Is the measurement value OK?
YES
The measurement value is OK.End of test
NO
The measurement value is not OK.Possible cause and remedy
K40/4f44 (Fuse 44)
K40/4kM (Circuit 30z relay)
Check lines from component N3/10 (MESFI [ME] control unit) to component R48 (Twodisk thermostat heating element).
R48 (Twodisk thermostat heating element)
End of test2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
4. The cooling performance of the engine cooling system is poor.
4. No further information available.
