B11/4 (Coolant Temperature Sensor)

B11/4 (Coolant Temperature Sensor)

Check Component B11/4 (Coolant Temperature Sensor).

Test 1 Check Actual Value B11/4 (Coolant Temperature Sensor)
Test 2 Test Internal Resistance of Component B11/4 (Coolant Temperature Sensor).


1 Check Actual Value B11/4 (Coolant Temperature Sensor)

Test sequence
- Switch on ignition.

Status of relevant actual value:
- Temperature of coolant: Note! Communication with ECU required

Specified value
- °C If the connection is unplugged at component B11/4 (Coolant temperature sensor) , the value is approx. .
- Bridge pin 1 in pin 2 at the unplugged connection of component B11/4 (Coolant temperature sensor). 170 °C The value is approx. .

Question
- Is the actual value o.k.?
Yes
The actual value is okay.
Further possible causes of fault
- Test internal resistance of component B11/4 (Coolant temperature sensor).
No
The actual value is not o.k.
Possible cause and remedy
- Inspect cables from component B11/4 (Coolant temperature sensor) to component N3/10 (ME-SFI control module).

** End of Test **


2 Test Internal Resistance of Component B11/4 (Coolant Temperature Sensor).

Test requirement
- The actual value is not o.k.

Test sequence
- Switch off ignition.
- (B11/4) 1 <--> 2 (B11/4)

Specified values
- Resistor(20 °C ): [2940...3240] ohms
- Resistor(30 °C ]: [1900...2100] ohms
- Resistor(40 °C ): [1265...1395] ohms
- Resistor(50 °C ): [855...945] ohms
- Resistor(60 °C ): [590...650] ohms
- Resistor(70 °C ): [420...460] ohms
- Resistor(80 °C ): [305...335] ohms
- Resistor(90 °C ): [220...240] ohms
- Resistor(100 °C ): [160...180] ohms

Question
- Are the measured values okay?
Yes
The measured value is o.k. ** End of Test **
No
The measured values are not o.k.
Possible cause and remedy
- B11/4 (Coolant temperature sensor)

** End of Test **