Parts for your 2007 Toyota Blade-Temperature sensors

2007 Toyota Blade temperaturesensors — relevance, purpose, and servicing tips

Based on Toyota service literature for the Auris/Blade E150 platform (2006–2012) and engine manuals for the 2AZ‑FE and 2GR‑FE, the 2007 Toyota Blade absolutely relies on multiple temperature sensors. The Engine Coolant Temperature (ECT) sensor, Intake Air Temperature (IAT) sensor, transmission fluid temperature sensor, ambient air temp sensor, and A/C evaporator temp sensor are all referenced in Toyota’s Repair Manual and Electrical Wiring Diagram for this model. The ECT sensor is tied directly to engine control and cooling fan strategy, with related diagnostic trouble codes such as P0115–P0119 and P0128 documented in Toyota’s DTC charts. The IAT is integrated with the MAF on many trims, and the auto trans uses fluid temp inputs for shift quality and protection. So, temperaturesensors are relevant, fitted, and essential on the 2007toyotablade.

On a 2007toyotablade, temperaturesensors do a power of work behind the scenes. The ECT tells the ECU how warm the engine is so it can sort fuel, ignition, VVT‑i timing, and idle speed, while also cueing the radiator fans. The IAT feeds in the air’s temperature so mixtures stay tidy whether it’s a frosty Dunedin morning or a scorching Perth arvo. Transmission fluid temperature helps protect the auto by adjusting shift strategy when things get hot, and the ambient and evaporator sensors keep the climate control behaving itself.

As part of regular servicing of your 2007toyotablade temperaturesensors, the workshop will usually verify readings with a scan tool: a stone‑cold ECT should be within a degree or two of ambient, then climb steadily to normal operating temp (roughly mid‑80s to mid‑90s °C). Any jumpy data, fans running flat‑out when the engine’s cold, odd gauge behaviour, or DTCs like P0115–P0119/P0128 (ECT) or P0110 (IAT) points the finger at wiring, connectors, or the sensor itself.

• Replacement tips (ECT): cool the engine fully, relieve system pressure, drain a little coolant, unplug the two‑pin connector, then remove the sensor. Fit a quality genuine or reputable aftermarket unit with a fresh seal, tighten to the service‑manual spec, reconnect, and top up with Toyota Super Long Life Coolant (pink). Bleed air properly to avoid hot spots.
• Care and checks: keep connectors clean and clipped, inspect harnesses near the radiator support and under the bonnet for rub‑through, and test sensor data during scheduled services. Sensors aren’t consumables, so they’re replaced on fault, but it’s smart to check them at coolant change intervals (Toyota SLLC initial 160,000 km/10 years, then every 80,000 km/5 years).
• Common symptoms: hard cold starts, rich running, poor economy, high idle, cooling fans on early, or the MIL lighting up. If the ECT fails outright, the ECU may default to a cold‑enrichment map and kick the fans on to play it safe.

For owners after hassle‑free motoring in Aussie or Kiwi conditions, keeping the temperaturesensors tidy and the coolant fresh is a simple way to protect the Blade’s engine and transmission for the long haul.

Popular questions about 2007toyotablade temperaturesensors

Where is the engine coolant temperature sensor on a 2007 Toyota Blade?

On most 2AZ‑FE models it’s threaded into the water outlet housing near the cylinder head, typically under the intake side, the two‑pin connector makes it easy to spot. On 2GR‑FE (Blade Master), it’s also mounted in the coolant crossover/water outlet area.

Access varies by engine: sometimes the airbox or intake ducting needs to come off for room. A proper scan tool check before diving in helps confirm the sensor is actually the culprit, not the wiring.

What fault codes point to dodgy temperaturesensors on a 2007 Blade?

For ECT you’ll commonly see P0115–P0119 and P0128. For IAT, P0110/P0112/P0113 pop up if the intake temp signal is implausible. These are the codes Toyota lists for the platform in its DTC references.

Always confirm live data and do a quick wiggle‑test on the harness. A corroded connector or broken earth can mimic a failed sensor.

Do the radiator fans run if the ECT sensor fails?

Yes, the ECU often commands the fans on as a fail‑safe if it can’t trust the ECT signal. That protects the engine from potential overheating while flagging a fault light.

If the fans roar from cold and the gauge is odd, scan for codes and verify ECT readings against ambient. Fix the root cause before driving long distances.