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Home >> Toyota >> 2009 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine Control System (1AR-FE) - DTC P0125 - P0500) >> DTC P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Monitor Strategy

Monitor Strategy

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MONITOR STRATEGY CHART

Related DTCs P0128: Coolant Thermostat
Required Sensors/Components (Main) Thermostat
Engine coolant temperature sensor
Required Sensors/Components (Related) Intake air temperature sensor
Vehicle speed sensor
Frequency of Operation Once per driving cycle
Duration 900 seconds
MIL Operation 2 driving cycles
Sequence of Operation None