STEP 1. Using scan tool (M.U.T.-IIISE), check data list item 6: Engine Coolant Temperature Sensor.
STEP 2. Check the engine coolant temperature sensor.
STEP 3. Measure the sensor supply voltage at engine coolant temperature sensor harness side connector.
(1) Disconnect the engine coolant temperature sensor connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal WTS line and ground.- Voltage should be between 4.5 and 4.9 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.5 and 4.9 volts?
Go to Step 5. Go to Step 4.
STEP 4. Check of open circuit in WTS line between engine coolant temperature sensor connector and ECM connector.
STEP 5. Check the continuity at engine coolant temperature sensor harness side connector.
STEP 6. Check of open circuit in E line between engine coolant temperature sensor connector and ECM connector.
STEP 7. Check of harness damage in WTS line between engine coolant temperature sensor connector and ECM connector.
STEP 8. Using scan tool (M.U.T.-IIISE), check data list item 6: Engine Coolant Temperature Sensor.
STEP 9. 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 1 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0118 set?
Retry the troubleshooting. The inspection is complete.