P0113
DTC P0113 - INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH INPUTDTC DETECTING CONDITION:
- Immediately at fault recognition.
TROUBLE SYMPTOM:
- Erroneous idling
- Poor driving performance
CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE. Refer to How To Clear Diagnostic Trouble Codes. Clear Memory Mode
WIRING DIAGRAM
10G1: CHECK CURRENT DATA.
1. Start engine.
2. Read data of intake air temperature sensor signal using Subaru Select Monitor or the OBD-II general scan tool.
NOTE:
- Subaru Select Monitor
For detailed operation procedure, Refer to the "READ CURRENT DATA SHOWN ON DISPLAY FOR ENGINE". Refer to Normal Scan Data Values.
- OBD-II general scan tool
For detailed operation procedure, Refer to the OBD-II General Scan Tool Instruction Manual.
CHECK: Is the value less than -40°C (-40°F)?
YES: Go to step 10G2.
NO: Repair poor contact.
NOTE: In this case, repair the following:
- Poor contact in intake air temperature and pressure sensor
- Poor contact in ECM
- Poor contact in coupling connector (B21)
- Poor contact in joint connector (B83 and B122)
10G2: CHECK HARNESS BETWEEN INTAKE AIR TEMPERATURE AND PRESSURE SENSOR AND ECM CONNECTOR.
1. Turn ignition switch to OFF.
2. Disconnect connector from intake air temperature and pressure sensor.
Connector & Terminal (E21) No.2 (+) - Engine ground (-):
3. Measure voltage between intake air temperature and pressure sensor connector and engine ground.
CHECK: Is the voltage more than 10 V?
YES: Repair battery short circuit in harness between intake air temperature and pressure sensor and ECM connector.
NO: Go to step 10G3.
10G3: CHECK HARNESS BETWEEN INTAKE AIR TEMPERATURE AND PRESSURE SENSOR AND ECM CONNECTOR.
1. Turn ignition switch to ON.
Connector & Terminal (E21) No.2 (+) - Engine ground (-):
2. Measure voltage between intake air temperature and pressure sensor connector and engine ground.
CHECK: Is the voltage more than 10 V?
YES: Repair battery short circuit in harness between intake air temperature and pressure sensor and ECM connector.
NO: Go to step 10G4.
10G4: CHECK HARNESS BETWEEN INTAKE AIR TEMPERATURE AND PRESSURE SENSOR AND ECM
CONNECTOR.
Connector & Terminal (E21) No.2 (+) - Engine ground (-):
Measure voltage between intake air temperature and pressure sensor connector and engine ground.
CHECK: Is the voltage more than 3 V?
YES: Go to step 10G5.
NO: Repair harness and connector.
NOTE: In this case, repair the following:
- Open circuit in harness between intake air temperature and pressure sensor and ECM connector.
- Poor contact in intake air temperature and pressure sensor.
- Poor contact in ECM.
- Poor contact in coupling connector (B21).
- Poor contact in joint connector (B83 and B122).
10G5: CHECK HARNESS BETWEEN INTAKE AIR TEMPERATURE AND PRESSURE SENSOR AND ECM CONNECTOR.
1. Turn ignition switch to OFF.
Connector & Terminal (E21) No.1 - Engine ground:
2. Measure resistance of harness between intake air temperature and pressure sensor connector and engine ground.
CHECK: Is the resistance less than 5 ohms?
YES: Replace intake air temperature and pressure sensor.
NO: Repair harness and connector.
NOTE: In this case, repair the following:
- Open circuit in harness between intake air temperature and pressure sensor and ECM connector.
- Poor contact in intake air temperature and pressure sensor.
- Poor contact in ECM.
- Poor contact in coupling connector (B21).
- Poor contact in joint connector (B83 and B122).