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Home >> Pontiac >> 2003 >> Aztek FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0507: Idle Control System - High Rpm >> Test Description
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Test Description

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

  1. 5 -  This test will determine the ability of the engine controller and IAC valve circuits to control the IAC valve.
  2. 7 -  This test will determine the ability of the PCM to provide the IAC valve circuits with a ground. On a normally operating system, the test light should not flash while the IAC counts are incrementing.