DTC B2111: Lumbar Down Switch Failed (Al2) Or DTC B2112: Lumbar Up Switch Failed (Al2): Description

Memory Seat Module (MSM) receives inputs from left lumbar switch. When switch is operated, it becomes grounded. The input is recognized by MSM, which moves lumbar support in up or down direction. If MSM continues to receive input from lumbar support switch for 30 seconds after requested up or down motion has ceased, switch is considered shorted. If lumbar vertical position sensor DTC is currently set and switch is in associated direction of suspect sensor for 30 seconds, switch is considered shorted. Appropriate MSM DTC will set when a switch failure is detected. When DTC is set, lumbar support cannot be moved up or down. MSM will continue to respond to valid inputs from other manual switches. All memory recall commands will be ignored. DTC will clear when MSM does not detect switch failure during last monitoring cycle.