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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 P0452: EVAP System Pressure Sensor - Low 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 verifies that the condition is present.
  2. 4 -  This step tests the 5-volt reference of the FTP sensor.
  3. 5 -  This step tests if another component is causing the 5-volt reference circuit condition.
  4. 6 -  If scan tool displays 5 volts, the FTP sensor signal circuit, FTP sensor 5-volt reference circuit, and control module are okay.

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