Diagnostic Aids

Use the Freeze Frame and/or Failure Records data in order to locate an intermittent condition. If you cannot duplicate DTC, the information included in the Freeze Frame and/or Failure Records data may aid in determining the number of miles since DTC set. The Fail Counter and Pass Counter can also aid in determining the number of ignition cycles that the diagnostic reported a pass and/or fail. Operate the vehicle within the same freeze frame conditions such as RPM, engine load, vehicle speed, temperature, etc. This will isolate when DTC failed.

Refer to TESTING FOR INTERMITTENT & POOR CONNECTIONS in WIRING SYSTEMS article.