DTC P1118: Engine Coolant Temperature Sensor No. 2 - High Input: Notes
WARNING: This page is about a different car, the 2002 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If DTCs P0108, P0113, P0118 or P0123 are set along with P1118, check shared ECM ground circuit (Green/Red wire) for open.