KOEO & KOER On-Demand Self-Test Codes
Record DTCs in order received. These DTCs indicate current faults in system and should be serviced in order of appearance. Use DIAGNOSTIC TROUBLE CODE DEFINITIONS to identify appropriate system test to perform.
NOTE:
If self-test will not activate or TOOL COMMUNICATION ERROR is received, go to TEST QA: UNABLE TO ACTIVATE SELF-TEST/SCP COMMUNICATION ERROR DTC NOT LISTED under SYSTEM TESTS.