Pinpoint Test OA: The Hill Descent Control Feature Is Inoperative

Normal Operation and Fault Conditions 

The hill descent control switch is part of the ATCM.

The hill descent control switch is used to activate and deactivate the hill descent control system. When the driver presses the hill descent control switch, the ATCM sends a hill descent control message to the ABS mode and GWM over the FD-CAN. When the IPC receives the message, the module illuminates the hill descent control indicator. The ABS module takes the necessary action depending on the switch inputs and hill descent control message.

Possible Sources 

• Network concern
• ATCM concern

Pinpoint Tests OA: The Hill Descent Control System Is Inoperative Or Cannot Be Disabled