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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 463 (Engine Control System (SFI) - Diagnostics) >> DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
MONITOR STRATEGY TABLE

Related DTCs P0128 Thermostat
Required sensors/components Main sensors Engine coolant temperature sensor, engine cooling system, thermostat
Related sensors Intake air temperature sensor, vehicle speed sensor
Frequency of operation Once per drive cycle
Duration 15 minutes
MIL operation 2 driving cycles
Sequence of operation None