Diagnosis Procedure
DIAGNOSIS PROCEDURE CHART
| Step | Action | YES | NO |
|---|---|---|---|
| 1 | CHECK ENGINE COOLANT TEMPERATURE SENSOR Refer to [P0128 THERMOSTAT FUNCTION ]. OK or NG |
GO TO 2. | Replace engine coolant temperature sensor. |
| 2 | CHECK THERMOSTAT Refer to [THERMOSTAT REMOVAL AND INSTALLATION ] OK or NG |
INSPECTION END | Replace thermostat. |