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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 370 (Engine Control System - Self-Diagnostics - 4.2L) >> Diagnostic Tests >> DTC P0453: EVAP System Pressure Sensor - High Input >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number in the diagnostic procedures.

  1. 2 -  This step determines if the condition is present.
  2. 4 -  This step tests the signal circuit of the FTP sensor.
  3. 5 -  This step tests the ground circuit of the FTP sensor.
  4. 6 -  This step tests the 5-volt reference circuit of the FTP sensor.

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