Short Circuit to Positive or Open Circuit
B2/5b1 (Intake Air Temperature Sensor) :: Short Circuit to Positive or Open Circuit (P0110)
Check Component B2/5b1 (Intake Air Temperature Sensor).
Test 1 Check Component B2/5b1 (Intake Air Temperature Sensor) Using Actual Value.
Test 2 Check Plausibility of Actual Value B2/5b1 (Intake Air Temperature Sensor) in Control Module N3/10 (ME-SFI Control Module).
Test 3 Test Voltage Supply of Component B2/5b1 (Intake Air Temperature Sensor).
Test 4 Test Internal Resistance of Component B2/5b1 (Intake Air Temperature Sensor).
1 Check Component B2/5b1 (Intake Air Temperature Sensor) Using Actual Value.
Test sequence
- Switch on ignition.
Status of relevant actual value:
- B2/5b1 (Intake air temperature sensor): Note! Communication with ECU required
Specified value
- Current temperature in area surrounding component B2/5b1 (Intake air temperature sensor)
Question
- Is the actual value o.k.?
Yes
The actual value is okay. ** End of Test **
No
The actual value is not o.k.
Possible cause and remedy
- Check plausibility of actual value B2/5b1 (Intake air temperature sensor) in control module N3/10 (ME-SFI control module).
- Test voltage supply of component B2/5b1 (Intake air temperature sensor).
- Test internal resistance of component B2/5b1 (Intake air temperature sensor).
** End of Test **
2 Check Plausibility of Actual Value B2/5b1 (Intake Air Temperature Sensor) in Control Module N3/10 (ME-SFI Control Module).
Test requirement
- The actual value is not o.k.
Test sequence
- Detach socket at component B2/5 (Hot film MAF sensor).
- Switch on ignition.
Status of relevant actual value:
- B2/5b1 (Intake air temperature sensor): Note! Communication with ECU required
Specified value
- °C If the connection is unplugged at component B2/5b1 (Intake air temperature sensor) , the value is approx. [ ].
- Bridge pin 1 in pin 3 at the unplugged connection of component B2/5b1 (Intake air temperature sensor).150 °C The value is approx. [ ].
Question
- Is the actual value o.k.?
Yes
The actual value is okay.
Further possible causes of fault
- Test voltage supply of component B2/5b1 (Intake air temperature sensor).
- Test internal resistance of component B2/5b1 (Intake air temperature sensor).
No
The actual value is not o.k.
Possible cause and remedy
- Signal wire
** End of Test **
3 Test Voltage Supply of Component B2/5b1 (Intake Air Temperature Sensor).
Test requirement
- The actual value is not o.k.
Test sequence
- Switch off ignition.
- Detach the socket at the component B2/5 (Hot film MAF sensor).
- (B2/5) 3 <--> 4 (B2/5)
- Switch on ignition.
Specified value
- Voltage[4.75...5.25] V
Question
- Is the measured value okay?
Yes
The measured value is o.k.
Further possible causes of fault
- Test signal voltage of component B2/5b1 (Intake air temperature sensor).
- Test internal resistance of component B2/5b1 (Intake air temperature sensor).
No
The measured value is not o.k.
Possible cause and remedy
- Cable for voltage supply
** End of Test **
4 Test Internal Resistance of Component B2/5b1 (Intake Air Temperature Sensor).
Test sequence
- Switch off ignition.
- Detach the socket at the component B2/5 (Hot film MAF sensor).
- (B2/5) 1 <--> 3 (B2/5)
Specified value
- Resistor(20 °C ): [2350...2500] ohms
- Resistor(30 °C ): [1600...1700] ohms
- Resistor(40 °C ): [1100...1200] ohms
- Resistor(50 °C ): [800...900] ohms
Question
- Are the measured values okay?
Yes
The measured values are o.k. ** End of Test **
No
The measured values are not o.k.
Possible cause and remedy
- B2/5b1 (Intake air temperature sensor)
** End of Test **