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Home >> Chevrolet >> 2003 >> Chevy Express G2500, Van Cargo Extended, 4.3 X, 4L60E/M30 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 4.3L >> Diagnostic Tests >> DTC P0106: Map System Performance >> Test Description

Test Description

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

  1. 5

    This step tests the MAP sensor's ability to correctly indicate barometric pressure.

  2. 7

    This step tests the MAP sensor's ability to respond to an increase in engine vacuum.

  3. 9

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

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