Engine Coolant Temperature (ECT) Meter Symptom Diagnosis
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.
NOTE:
When ECT meter signal circuit is shorted to ground circuit and/or open circuit, ECT meter indicates cold even if engine coolant temperature rises.
Fig 1: Engine Coolant Temperature (ECT) Meter Symptom Diagnosis Chart