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DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Input

WARNING: This page is about a different car, the 1999 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Select ECT sensor parameter on scan tool. If scan tool displays 327°F (164°C), go to next step. If scan tool display is not as specified, check for an intermittent problem. See TROUBLE SHOOTING - NO CODES article.
  2. Disconnect ECT sensor harness connector. If scan tool display drops to -40°F (-40°C), replace ECT sensor. If scan tool display is not as specified, check Orange/Black wire for short to ground. If wire is okay, replace PCM and retest system.
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