B2858
DTC B2853, B2858, B2873, or B2878
Circuit Description
The driver position module receives ground inputs from contacts inside the telescoping switch. The steering column module then supplies battery voltage to the telescope motor in or out circuit depending on which direction of movement is requested.
DTC Descriptors
This diagnostic supports the following DTCs:
* DTC 2853 Telescope Forward Switch Circuit Malfunction
* DTC 2858 Telescope Rearward Switch Circuit Malfunction
Conditions for Running the DTC
The steering column module is ON.
Conditions for Setting the DTC
The steering column module detects a switch input for more than 30 consecutive seconds after movement of the motor in the requested direction has stopped.
Action Taken When the DTC Sets
* The motor that is being driven by the failed switch will be deactivated.
* Memory recall functions will be disabled.
Conditions for Clearing the DTC
* A current DTC will clear when the failed switch input is no longer active.
* A history DTC will clear after 100 ignition cycles.
Diagnostic Aids
An intermittently stuck switch can cause this DTC to set. Refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
