W/Harness Inspection

Engine

Engine Control - P0128 Coolant Thermostat (Coolant Temperature below Thermostat Regulating Temperature) - W/Harness Inspection

Component Inspection

1. Remove the thermostat and check the following items:.
(1) Stuck or damaged
(2) Verify the temperature at which the valve is open
- Valve opening temperature : 82°C (177°F)
- Full opening temperature : 95°C (205°F)
2. Is the thermostat normal?