Parts for your 2010 Toyota Blade-Temperature sensors

2010 Toyota Blade temperature-sensors: what they do and how to look after them

Based on Toyota service information for the AZE156/GRE156 series (Repair Manual, New Car Features, and Electrical Wiring Diagram) and standard OBD‑II references (SAE J1979), the 2010 Toyota Blade absolutely uses temperature sensors. These include the engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor, ambient air temp sensor for climate control, and transmission fluid temperature sensing (CVT/AT). They’re core to fuelling, ignition, emissions, cooling fan control, and drivability on both the 2AZ‑FE 2.4‑litre and 2GR‑FE 3.5‑litre Blade models.

The ECT sensor is the big one. It tells the ECU how hot the engine is, so it can set cold‑start enrichment, idle speed, timing, and when to kick the radiator fans on. A laggy or failed ECT can make a Blade drink more fuel, start poorly on cold mornings, or run the fans when it shouldn’t. The IAT sensor helps the ECU account for the density of the air going in