Intermittent Problem Diagnosis

Intermittent fault testing requires reproducing circuit or component failure to identify the problem. These procedures may lead to the computer setting a fault code which may help in diagnosis.

Use a DVOM to pinpoint faults. When monitoring voltage, ensure ignition switch is in ON position or engine is running. Ensure ignition switch is in OFF position or negative battery cable is disconnected when monitoring circuit resistance. Status changes on DVOM during test procedures indicate area of fault.