Intermittent Simulation

To reproduce the conditions creating an intermittent fault, use the following methods:

• Lightly vibrate component. See VIBRATION METHOD.
• Heat component. See HEAT METHOD.
• Wiggle or bend wiring harness. See VIBRATION METHOD.
• Spray suspect component with light water mist, or spray radiator with water to raise humidity. See HUMIDITY METHOD.
• Remove/apply vacuum source.

Monitor circuit/component voltage or resistance while simulating intermittent. If engine is running, monitor for self-diagnostic codes. Use test results to identify a faulty component or circuit.