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HOMESERVICE MANUALSOLDSMOBILE1998ACHIEVA 3.1 M, 4T40E/MN4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 46 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)IDLE CONTROL SYSTEMSIDLE AIR CONTROL SYSTEM DIAGNOSISTEST DESCRIPTION
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4

Test Description

1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4SECTION Test Description
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. 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 light should not flash while the IAC counts are incrementing.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.