P0113
B17 (Intake air temperature sensor) : Short circuit to positive or open circuit (P0113)
Possible cause:
- B17 (Intake air temperature sensor)
Affected functions:
- Engine diagnosis
-------------------------------------------------
Test 1: Check component B17 (Intake air temperature sensor).
1. Check component B17 (Intake air temperature sensor).
Test 1.1: Check component B17 (Intake air temperature sensor) using actual value.
Test 1.2: Check plausibility of actual value B17 (Intake air temperature sensor) in control module ME 9.7 (AMG).
Test 1.3: Check internal resistance of component B17 (Intake air temperature sensor).
1.1. Check component B17 (Intake air temperature sensor) using actual value.
Test sequence
- Switch on ignition.
Status of relevant actual value:
- Intake air temperature:Warning! Communication with ECU required.
Specified value
- Current temperature in area surrounding component B17 (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 B17 (Intake air temperature sensor) in control module N3/10 (ME-SFI [ME] control unit).
- Check internal resistance of component B17 (Intake air temperature sensor).
1.2. Check plausibility of actual value B17 (Intake air temperature sensor) in control module ME 9.7 (AMG).
Test prerequisite
- The actual value is not o.k.
Test sequence
- Detach coupling at component B17 (Intake air temperature sensor).
- Switch on ignition.
Status of relevant actual value:
- Intake air temperature:Warning! Communication with ECU required.
Specified value
- If the connector is unplugged at component B17 (Intake air temperature sensor), value [ -40° C ] is displayed.
- Bridge pin 1 in pin 2 at the unplugged connection of component B17 (Intake air temperature sensor).The value is approx. [ 150° C ] for a short period of time and drops back down to the substitute value of approx. [ -40° C ].
Question
- Is the actual value o.k.?
YES
The actual value is okay.Further possible causes of fault
- Check internal resistance of component B17 (Intake air temperature sensor).
NO
The actual value is not o.k.Possible cause and remedy
- Signal wire
End of test
1.3. Check internal resistance of component B17 (Intake air temperature sensor).
Test sequence
- Switch off ignition.
- Detach coupling at component B17 (Intake air temperature sensor).
- Measure resistance with multimeter between pins (B17) 1 and (B17) 2
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 measurement values OK?
YES
The measurement values are OK.End of test
NO
The measurement values are not OK.Possible cause and remedy
- B17 (Intake air temperature sensor)
End of test