Operation

OPERATION

When the lumbar switch control knob is actuated, a resistance signal is sent to the Driver Door Module via hard wired connections. The Driver Door Module then sends the request to the Memory Heated Seat Adjustable Pedal Module (MHSAPM) via the Programmable Communications Interface (PCI) data bus circuit. The MHSAPM is responsible for the 12v battery feed and ground path to the power seat lumbar adjuster motor. The lumbar adjuster motor operates to move the cable and lumbar mechanism through its travel until the switch is released, or until the travel limit of the adjuster is reached.