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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 114 (Engine Control System Testing & Engine Component Testing) >> Idle Control Systems >> Idle Air Control System (2.2L, 2.4L, 3.1L, 3.4L, 3.5L, 3.8L, 4.0L & 4.6L) >> Test Description
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Test Description

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn SL2, 2002 Saturn SL1, 2002 Saturn SL, 2002 Saturn SC2, and 2002 Saturn SC1. 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 procedures.

  1. 5

    This test determines the ability of the PCM and IAC valve circuits to control the IAC valve.
  2. 7

    This test determines the ability of the PCM to provide the IAC valve circuits with a ground. On a normally operating system, the test lamp should not flash while the IAC counts are incrementing.