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On-Board Diagnostics (OBD II)

ON-BOARD DIAGNOSTIC (OBD-II) INFORMATION

On-Board Diagnostic (Self Diagnosis System) Tests
A diagnostic test is a series of steps, the result of which is a pass or fail reported to the diagnostic executive.

When a diagnostic test reports a pass result, the diagnostic executive records the following data:
- The diagnostic test has been completed since the last ignition cycle.
- The diagnostic test has passed during the current ignition cycle.
- The fault identified by the diagnostic test is not currently active.

When a diagnostic test reports a fail result, the diagnostic executive records the following data:
- The diagnostic test has been completed since the last ignition cycle.
- The fault identified by the diagnostic test is currently active.
- The fault has been active during this ignition cycle.
- The operating conditions at the time of the failure.