Parts for your 2007 Toyota Wish-Temperature sensors

2007 Toyota Wish temperature sensors

Based on Toyota service literature and supplier data, temperature sensors are absolutely used on the 2007 Toyota Wish. Toyota’s New Car Features (NCF) for the ZNE10/ANE10 series, the Toyota Repair Manual for the 1ZZ‑FE and 1AZ‑FSE engines, and DENSO sensor catalogues all specify multiple temperature sensors. These include the engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor, automatic transmission fluid temperature sensor, ambient temperature sensor for the HVAC and display, and an evaporator temperature sensor for air‑con control. These inputs also align with SAE J1979 OBD‑II diagnostics, which lists related fault codes used by the Wish’s engine and transmission ECUs.

On this model, temperature sensors let the ECUs make smart choices about fueling, ignition timing, idle speed, fan operation, transmission shift strategy, and air‑conditioning performance. If one goes out of whack, the Wish can be harder to start cold, run rich, use more fuel, flare or bang on shifts, or have the A/C cycling oddly.

For servicing, these sensors aren’t a regular replacement item, but they do deserve checks during cooling system and intake maintenance. A healthy ECT sensor helps the ECU decide when the engine’s warm enough, while the IAT keeps fuelling tidy across seasons. The auto’s ATF temperature input helps protect the gearbox on hot days and long hills—very handy across Aussie and Kiwi conditions.

• Common sensors fitted:
  • ECT (in the thermostat housing or cylinder head)
  • IAT (in the MAF body or intake duct)
  • ATF temperature (inside the transmission)
  • Ambient temp (front bumper/radiator support area)
  • Evaporator temp (within the HVAC case)
• When to replace:
  • Fault codes such as P0115–P0119, P0125, or matching transmission/AC codes
  • Cold‑start issues, poor economy, erratic fan behaviour, or harsh/late shifts
• Service tips:
  • Inspect connectors for corrosion, broken locks, or coolant wicking into the plug
  • Compare live data to actual temps, use a multimeter to check resistance against Toyota specs
  • Replace sealing washers/O‑rings and bleed coolant properly after ECT work
  • Keep intake plumbing airtight so the IAT reads true

Owners typically see well over 150,000 km from these parts, but age, heat, and coolant contamination can shorten life. Using quality, OE‑equivalent sensors from recognised suppliers and following the Toyota manual procedures will keep the Wish running sweet and efficient.

Popular questions about 2007 Toyota Wish temperature sensors

Where’s the engine coolant temperature (ECT) sensor on a 2007 Toyota Wish?

On most 1ZZ‑FE and 1AZ‑FSE variants, the ECT sensor threads into the thermostat housing or the cylinder head near the outlet. It’s a two‑pin sensor. Access is under the bonnet at the front/side of the engine, a torch helps to spot the connector and retaining clip.

How often should the temperature sensors be replaced?

There’s no fixed interval. They’re replaced when faulty or when data’s out of spec. It’s smart to test the ECT during coolant changes and check IAT readings during intake or MAF servicing, especially if drivability symptoms or fault codes appear.

What symptoms point to a dodgy ECT sensor?

Hard cold starts, rich running, poor fuel economy, radiator fans running at odd times, or OBD‑II codes like P0115–P0119. Live data that doesn’t match the actual engine temperature is a giveaway. If readings are erratic, inspect the connector and wiring before swapping the sensor.