System Readiness Test (SRT): Description

System Readiness Test (SRT) codes indicate whether self-diagnostic tests for non-continuously monitored components have been completed or are incomplete. Inspection/Maintenance (I/M) tests of the On-Board Diagnostic II (OBD-II) type emission systems may become the legal requirements in some states/areas. All SRT codes must be set, or complete, prior to performing an I/M test. See SETTING SRT CODES  procedure.

If diagnostic information is erased or battery is disconnected for a prolonged period of time, vehicle must be driven in the manner prescribed to set all SRT codes. SRT codes are set after component self-diagnosis has been performed one or more times. SRT codes are set whether component diagnosis is good or bad, and whether or not diagnosis is performed in consecutive trips. See SETTING SRT CODES .