Connect GDS to Data Link Connector (DLC).
Warm engine up to normal operating temperature.
Turn "OFF" electrical devices and A/C.
Monitor "BRAKE SWITCH" and "REDUNDANT BRAKE SWITCH" parameter on the GDS.
Specification : When brake pedal is released : "BRAKE SWITCH" and "REDUNDANT BRAKE SWITCH" : OFF
When brake pedal is depressed : "BRAKE SWITCH" and "REDUNDANT BRAKE SWITCH" : ON
Fig.1) Data when brake switch(brake pedal) is deactivated(released) : "BRAKE SWITCH" and "REDUNDANT BRAKE SWITCH" : OFF
Fig.2) Data when brake switch(brake pedal) is activated(depressed) : "BRAKE SWITCH" and "REDUNDANT BRAKE SWITCH" : ON