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Normal Operation and Fault Conditions

On certain 4x4 vehicles, the ATCM is used to activate and deactivate the selectable drive mode feature. When the driver presses the ATCM drive mode switch, the ATCM sends a drive mode message to the ABS module over the HS-CAN 2. The ABS module takes the necessary action depending on the selectable drive mode message. 

PPT OB ABS MODULE DTC FAULT SETTING CONDITIONS

DTC Description Fault Setting Conditions
P05D3:86 Driver Mode Select Switch 'A' Range/Performance: Signal Invalid This DTC sets if the selectable drive mode switch message sent from the TCM or PCM indicates the switch has been pressed for longer than 30 seconds. This can be caused by a short to ground on the selectable drive mode switch circuit, if there is an internal failure of the selectable drive mode switch or an internal failure of the TCM or PCM.