Intermittent Simulation

To reproduce the conditions that create an intermittent fault so it may be identified during testing, some of the following methods may be used:

• Applying light vibration to components.
• Heating a component.
• Wiggling or bending a wiring harness.
• Applying humidity to a component.
• Removing or applying a vacuum supply source.

Monitor circuit/component voltage or resistance while attempting to simulate intermittent. If vehicle is running, monitor for self-diagnostic codes. See TESTS W/CODES article. Use the results of these tests to identify a faulty component or an area that should be closely checked for the problem.