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Home >> Toyota >> 2011 >> Matrix Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (2ZR-FE) (Diagnostic Codes (P0010 - P0368) & Circuit Tests) >> SFI System >> DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

Duration that both of following conditions (a) and (b) are met 5 seconds or more
(a) Estimated engine coolant temperature 75°C (167°F) or more
(b) Engine coolant temperature sensor output Below 75°C (167°F)
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