Seats: Locations

Component Arrangement







Function of individual components

[1]- Parking aid
When reverse gear is engaged, the corresponding rearview mirror (right-hand drive or lefthand drive according to coding) is lowered by the angle stored. Manual adjustment of the seat motors is carried out parallel to the lowering of the rearview mirror. Automatic adjustment interrupts the lowering procedure. If reverse gear is still engaged after automatic adjustment is complete, the rearview mirror is lowered again.

[2]- Rearview mirrors
Manual adjustment of both rearview mirrors is carried out with the switches for rearview mirrors or changeover switch for rearview mirrors. When the desired positions have been set and stored by means of the switches for memory seat adjustment, automatic adjustment of the rearview mirrors is carried out by actuating the corresponding switch (1, 2 or 3).

[3]- Support with gear unit
The support with gear unit consists of the following components:
- Two electric motors with a potentiometer
- Gear unit

[4]- Front seat
The following are the possibilities for adjusting the front seat:
- Backrest
- Front height
- Rear height
- Longitudinal direction
- Upper lumbar
- Lower lumbar

When the desired positions have been found and stored by means of the switches for memory seat adjustment, they can be called up at the push of a button when required.

[5]- Control module
The control module is fastened under the front seat (driver's side) with two screws. There is a total of 10 connection points on the control module.

[6]- Switches for memory seat adjustment
These switches [M, 1, 2, 3] can be used to store or call up the optimum positions once they have been found. The systems enables adjustment values for three persons to be stored.

Lumbar support
The lumbar support consists of two cushions which are inflated by means of a motor for lumbar support. The cushions are inflated or deflated to the required pressure one after the other beginning with the upper cushion. The pressure in the cushions is measured using a pressure sensor (regulating switch). The pressure sensor is located at the same height as the headrest and is integrated into the lumbar adjustment. Automatic adjustment of the lumbar support is carried out by actuating the switch for memory seat adjustment. The motor for lumbar adjustment is shown in Figure 611_98 together with both lumbar cushions. Automatic adjustment of the lumbar support is divided into two phases.

1. If the seat motors have not yet reached their required position, adjustment of the lumbar support is interrupted by releasing the switch for memory seat adjustment.

2. If the seat motors have reached their required position, adjustment of the lumbar support is completed after the switch for memory seat adjustment is released.










Electric motor for backrest adjustment
The backrest is adjusted by an electric motor with gear unit. A Hall-effect sensor is integrated into the electric motor which measures the actual position.







Switch for seat adjustment
Manual adjustment of the seat positions is carried out by actuating the three switches located on the driver's seat (front seat).

[1,2,3]- Fore-and-aft adjustment and height adjustment are carried out by actuating the switch in the positions shown in Figure 615_98.

[4]- The seat backrest can be brought into desired position by actuating the switch.

[5]- The lumbar support is inflated or deflated by actuating the switch.







Figure 613_98 shows how the following system components are arranged under the front seat.

[1]- Control module
[2]- Electric motor for front height adjustment
[3]- Electric motor for seat adjustment
[4]- Electric motor for rear height adjustment







Identification
The diagnosis software number and control module part number can be read out under the Identification menu item.

Fault memory
Stored faults can be read out under the Fault memory menu item.

Clear the fault memory
Faults stored in the control module can be erased under the Erase fault memory menu item. Here, all stored faults are erased.

Actual values
In the Actual values menu item, the current values of the following parameters can be read out.

- Voltage of terminal 30
- Voltage of Hall-effect sensor for fore-and-aft adjustment
- Voltage of Hall-effect sensor for backrest
- Voltage of Hall-effect sensor for front height
- Voltage of Hall-effect sensor for rear height
- Voltage of pressure sensor
- Voltage of right horizontal mirror potentiometer
- Voltage of right vertical mirror potentiometer
- Voltage of left horizontal mirror potentiometer
- Voltage of left vertical mirror potentiometer

Input signals
This menu item enables input signals of the system to be read out by the Porsche System Tester 2. This allows the function of the individual components to be assessed very quickly.

Comparison table of input signals
In the comparison table, the following applies for the tester display:

Boundary conditions
- Terminal 15 switched on and reverse gear not engaged
- Switch for memory seat adjustment not actuated
- The system is in perfect condition







Drive links
The menu item Drive links enables the following system functions to be checked.

- Fore-and-aft adjustment forward
- Fore-and-aft adjustment backward
- Backrest forward
- Backrest backward
- Front height upward
- Front height downward
- Rear height downward
- Rear height upward
- Left mirror to right
- Left mirror to left
- Left mirror upward
- Left mirror downward
- Right mirror to right
- Right mirror to left
- Right mirror upward
- Right mirror downward
- Fill upper valve
- Bleed upper valve
- Fill lower valve
- Store position 1
- Store position 2
- Store position 3
- Approach required position 1
- Approach required position 2
- Approach required position 3

INFORMATION: The drive links are not activated until the switch M is depressed continuously.