- Read fault memory from control unit ESP and rectify faults.
End of test
1461
B11/4 (Coolant temperature sensor) : Coolant temperature is too high. (P0116)
Possible cause:
- B11/4 (Coolant temperature sensor)
- Y110 (Three-disk thermostat valve)
- The cooling performance of the engine cooling system is poor.
Affected functions:
- Engine diagnosis
- Engine cooling
-------------------------------------------------
Test 1: The cooling performance of the engine cooling system is poor.
Test 2: Check component B11/4 (Coolant temperature sensor).
Test 3: Check component Y110 (Three-disk thermostat valve).
1. The cooling performance of the engine cooling system is poor.
The cooling performance of the engine cooling system is poor.
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锟斤拷 C]: [3.45...3.32] V
- Voltage[30锟斤拷 C]: [2.93...2.82] V
- Voltage[40锟斤拷 C]: [2.41...2.32] V
- Voltage[50锟斤拷 C]: [1.93...1.86] V
- Voltage[60锟斤拷 C]: [1.51...1.46] V
- Voltage[70锟斤拷 C]: [1.18...1.13] V
- 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
