Connect GDS to Data Link Connector (DLC).
Warm engine up to normal operating temperature.
Turn "OFF" electrical devices and A/C.
Select "CLUTCH SWITCH" parameter on the GDS.
Specification : When clutch switch released : "CLUTCH SWITCH" : OFF
When clutch switch depressed : "CLUTCH SWITCH" : ON
Fig.1) "CLUTCH SWITCH" OFF
Fig.2) "CLUTCH SWITCH" ON