STEP 1. Using scan tool (M.U.T.-III), check data list item 5: Intake Air Temperature Sensor.
caution | To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III). |
(1) Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) . (2) Remove the mass airflow sensor from the air intake hose.
(3) Turn the ignition switch to the "ON" position.
(4) Set scan tool (M.U.T.-III) to the data reading mode for item 5, Intake Air Temperature Sensor.
(5) Heating the sensor using a hair drier.- The indicated temperature increases.
note | Do not allow it to increase over 80°C (176°F). |
(6) Turn the ignition switch to the "LOCK" (OFF) position.
(7) Attach the mass airflow sensor.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Go to Step 2.
STEP 2. Check the intake air temperature sensor.
STEP 3. Check the continuity at intake air temperature sensor harness side connector.
STEP 4. Check of harness damage in AFSE line between mass airflow sensor connector and ECM connector.
STEP 5. Check of harness damage in ATS line between mass airflow sensor connector and ECM connector.
STEP 6. Using scan tool (M.U.T.-III), check data list item 5: Intake Air Temperature Sensor.
STEP 7. Using scan tool (M.U.T.-III), check data list item 6: Engine Coolant Temperature Sensor.
STEP 8. Check the engine coolant temperature sensor.
STEP 9. Check the continuity at engine coolant temperature sensor harness side connector.
STEP 10. Check of harness damage in WTSE line between engine coolant temperature sensor connector and ECM connector.
STEP 11. Check of harness damage in WTS line between engine coolant temperature sensor connector and ECM connector.
STEP 12. Using scan tool (M.U.T.-III), check data list item 6: Engine Coolant Temperature Sensor.
STEP 13. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 24 . (2) Check the diagnostic trouble code (DTC).
Is DTC P011B set?
Retry the troubleshooting. The inspection is complete.