Retrieving Trouble Codes: Notes
NOTE:
Trouble codes may be retrieved using Toyota scan tester or On-Board Diagnostic (OBD-II) scan tester that complies with SAE standard J1978. Toyota scan tester and OBD-II scan tester may be operated in Normal Mode when retrieving trouble codes. Only Toyota scan tester may be used in Check Mode when retrieving trouble codes.
NOTE:
The Normal Mode is used to retrieve trouble code from Engine Control Module (ECM). Check Mode is used to check for trouble codes when operating vehicle to simulate conditions in which trouble code was set. Check Mode contains a higher sensing ability to detect malfunctions. Check Mode helps determine malfunctions caused by poor electrical connections, which are difficult to determine using Normal Mode.