Programming And Operating The Seats Using The Memory
Programming
There are four buttons for programming seat positions:
- three memory buttons called 1, 2 and 3
- a programming button, MEM.
To program in a new seat position:
- move the seat to the desired position
- press MEM and one of the memory buttons at the same time.
Moving
To move the seat to the programmed position:
- Hold the desired memory button depressed until the seat stops. The button must be depressed the entire time for the seat to move. The seat will stop if the button is released.
The seat stops moving when the position of the seat matches the position programmed into the memory. If another button is pressed the seat will stop moving. The seat will not move if no position is programmed.
The vehicle is equipped with door mirrors with memory function. When the desired memory button is pressed, the programmed door mirror position is set. In order to do so, the power seat module (PSM) (3/26) sends information to the passenger door module (PDM) (3/127) and the driver door module (DDM) (3/126) to adjust the door mirrors to the programmed position. The door mirror memory position is stored in the driver door module (DDM) or passenger door module (PDM). The stored door mirror position is the position that door mirrors were in when the seat position was programmed. The position of the driver's door mirror is stored in the driver door module (DDM) and the position of the passenger door mirror is stored in the passenger door module (PDM).
When the seat is run, a maximum of two motors are activated at the same time. If all motors need to operate to reach the programmed position, there is an order of priority. Motor 1 (front-rear adjustment) and motor 2 (backrest adjustment) operate first.
Each seat motor has a Hall sensor which detects the present position of the seat. When one of the stepper motors for the seat is run, the control module counts the number of pulses from the Hall sensor. The Hall sensor counts the number of revolutions made by the motor by detecting a magnet on the motor shaft. This creates a pulse for each revolution of the motor.
When a seat position is stored, the information about the number of pulses counted from each motor is stored in a memory.
When one of the memory buttons is pressed in, the control module calculates which motors need to be run and in which direction to obtain the desired position.