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Home >> Toyota >> 2004 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Engine Control System Self Diagnostics) >> Diagnostic Tests >> DTC P0128: Thermostat Malfunction (Corolla Model) >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2003 Toyota Matrix and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

If water temperature doesn't reach 167°F (75°C) even after warming up, it is abnormal. Detecting condition of DTC is when there are following conditions: