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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 378 (Engine Controls Self-Diagnostics - 3.1L Engine) >> Diagnostic Tests >> DTC P0116: ECT Sensor Circuit Performance >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. 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 procedure.

  1. 7  - An IAT sensor that is skewed low can cause this DTC to set.
  2. 8  - A snapshot is the quickest method to capture the data before it changes.
  3. 10  - This step will determine if high resistance has caused this DTC to set.
  4. 12  - A high resistance short from the signal circuit to the low reference circuit can cause this DTC to set.
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