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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 182 (Engine Control System - Self-Diagnostics) >> Diagnostic Tests >> DTC P0115: ECT Sensor Circuit >> Test Description
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Test Description

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. - The Diagnostic System Check - Engine Controls prompts the technician to complete some basic checks and stores freeze frame data, if applicable. This creates an electronic copy of data taken when fault occurred. Information is then stored on the scan tool for later reference.
  2. - This step checks for a high input condition. If scan tool reads 284°F (140°C), input circuit results may be the result of a short circuit.
  3. - This step checks for a low input condition. If scan tool reads -40°F (-40°C), input circuit results may be the result of an open circuit.
  4. - This step determines if DTC P0115 is the result of a hard failure or an intermittent condition.