Note
When using the GTS with the power switch off to troubleshoot:
Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-seconds intervals until communication between the GTS and vehicle begins.
CHECK FOR DTC
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / (desired system) / Trouble Codes.
Read the DTCs.
CLEAR DTC
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / (desired system) / Trouble Codes.
Clear the DTCs.