Code No. P0113: Intake Air Temperature Sensor Circuit High Input




OPERATION




FUNCTION




TROUBLE JUDGEMENT


Check Condition
Judgement Criterion

FAIL-SAFE AND BACKUP FUNCTION




PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III data list



  • Item 5: Intake air temperature sensor
OK: At ambient temperature (atmospheric temperature) or equivalent.

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2.

STEP 2. Check intake air temperature sensor itself.



  • Intake air temperature sensor check (Refer to ).

Q. Is the check result normal?

Go to Step 3.
Replace the manifold absolute pressure sensor.

STEP 3. Perform voltage measurement at manifold absolute pressure sensor connector.



  • Disconnect connector, and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal engine-ECU ATS line and earth.
OK: 4.5 - 4.9 V

Q. Is the check result normal?

Go to Step 6.
Go to Step 4.

STEP 4. Check of open circuit in ATS line between manifold absolute pressure sensor connector and engine-ECU connector.


Q. Is the check result normal?

Go to Step 5.
Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III data list



  • Item 5: Intake air temperature sensor
OK: At ambient temperature (atmospheric temperature) or equivalent.

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Replace the engine-ECU.

STEP 6. Perform resistance measurement at manifold absolute pressure sensor connector.



  • Disconnect connector, and measure at harness side.
  • Resistance between terminal engine-ECU SENG line and earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?

Go to Step 8.
Go to Step 7.

STEP 7. Check of open circuit, and damage in SENG line between manifold absolute pressure sensor connector and engine-ECU connector.


Q. Is the check result normal?

Go to Step 5.
Repair the connector(s) or wiring harness.

STEP 8. Check of damage in ATS line between manifold absolute pressure sensor connector and engine-ECU connector.


Q. Is the check result normal?

Go to Step 5.
Repair the connector(s) or wiring harness.