Circuit Description

Seat Control Module (SCM) measures and stores steering column telescopic position using a position sensor. This position sensor is part of the telescoping actuator. Steering column position is stored in SCM. SCM provides a steady 5-volt supply (Purple wire) and ground (Black wire) to horizontal position sensor. Horizontal position sensor provides a return voltage on signal wire (White wire) to SCM. Depending on column location, voltage on signal wire varies from 0.10-4.78 volts. When memory recall is requested, SCM applies voltage to motor until position sensor voltage equals stored value, moving steering column to preset position.

DTC B2860 will set if position sensor input to SCM is less than 0.10 volt or more than 4.78 volts for 2 seconds or more. DTC B2860 will store as a history code in SCM memory. No driver warning will be displayed. DTC can only set as history even if malfunction is current. Memory function and operation of faulty position sensor will be disabled.

Under all fault conditions, DTC B2860 will clear automatically when position sensor to SCM is within operating range of 0.10-4.78 volts for 2 seconds or more. Current and history DTCs can be cleared using scan tool or IPC clearing DTCs feature.