Scan Tool Data Definitions - Inputs

PRNDL STATE
Range: Park/Reverse/Neutral/Drive/Third/Second/First/Invalid: This data input refers to the PRNDL position data that is communicated to the cluster over the class 2 serial data line by the VCM. The value of this parameter corresponds to the gear that is selected on the PRNDL display. The value of this parameter will be INVALID under the following conditions:
^ The data from the VCM is INVALID.
^ The data from the VCM is PARK but the cluster does recognize the class 2 message from the VCM.
^ A class 2 communication failure has occurred. When the value of this parameter is INVALID, no gear will be shown as selected on the PRNDL display.

DIMMING
Range: Active/Inactive: This data refers to the dimming availability feature of the PRNDL and odometer/trip odometer vacuum florescent displays. ACTIVE is displayed when the PRNDL and odometer/trip odometer vacuum florescent displays can be dimmed using the dimming thumbwheel switch. INACTIVE is displayed when the PRNDL and the odometer/trip odometer vacuum florescent displays cannot be dimmed using the dimming thumbwheel displays.

PARK SWITCH
Range: Open/Closed: This data input refers to the state of the gear shift park position switch. OPEN is displayed when the gear shift is not fully seated in park. CLOSED is displayed when the gear shift is in the park position and the gearshift lever is at the normal rest position.

TRIP RESET SWITCH
Range: Active/Inactive: This data refers to the position of the trip odometer reset switch. ACTIVE is displayed when the trip reset switch is pushed in. INACTIVE is displayed when the trip reset switch is in the normal position (not pushed in).