Test Function No. 1: Self-Diagnostics

Codes stored in Test Function No. 1 should be read after a road test because cruise control self-diagnostics does not store codes. Codes are erased when ignition is turned off. Road test must exceed 22 MPH, otherwise DTC 122 will always be stored, indicating speed has not reached minimum speed.

NOTE: If engine is turned off after road test, Code 122 will be stored. Road test must be repeated.