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Home >> Chevrolet >> 2003 >> TrailBlazer 5.3 P, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 5.3L >> Diagnostic Tests >> DTC P0106: Map System Performance >> Test Description

Test Description

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

  1. 4

    This step tests the MAP sensors ability to correctly indicate Barometric (BARO) pressure.

  2. 6

    This step tests the MAP sensors ability to respond to an increase in engine vacuum.

  3. 8

    This step tests for a proper MAP sensor pressure with an applied vacuum.

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