Tech 500
User Guide rev1.0
JUNE 2013
40
APPENDIX F: COMS ERROR TROUBLESHOOTING
If you are having a problem or error during the COMS process, follow these steps before calling
customer support.
Check vehicle ignition
Vehicle ignition must be in the RUN position in order for vehicle COMS process to complete.
Check cable to tool connection
Insure the cable is connected at the DB15 and thumb screws are finger tight.
Check cable connection at vehicle
Make sure OBDII connection is good.
Verify Make, Model, and Year
COMS can change from Model to Model, and Year to Year. Verify the tool is set-up to the
proper MMY.
Verify tool power level
If your tool has a low battery charge, this may affect the COMS process. Charge tool and try
again.
