Engine Coolant Temperature (ECT) Sensor Inspection
WARNING: This page is about a different car, the 2003 Suzuki XL-7 and 2003 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Warm up sender gauge (2).
Make sure its resistance is decreased with increase of its temperature.
ECT sender gauge specifications
at 50°C (122°F):
136 - 216 Ω
at 120°C (248°F)
16.4 - 19.4 Ω
Fig 1: Checking Engine Coolant Temperature (ECT) Sensor