Memory Positioning Systems: Testing and Inspection

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

Tester display Status
M Button M button not actuated
Button 1 Button 1 not actuated
Button 2 Button 2 not actuated
Button 3 Button 3 not actuated
Reverse gear engaged Reverse gear not engaged
engaged Door contact closed (door open) Depends on door position
Supply voltage (terminal 15) Terminal 15 signal present
Cancel parking aid Cancel parking aid
Fore-and-aft adjustment forward Switch sign "open"
Fore-and-aft adjustment backward Switch sign "open"
Front height upward Switch sign "open"
Front height downward Switch sign "open"
Rear height upward Switch sign "open"
Rear height downward Switch sign "open"
Backrest forward Switch sign "open"
Backrest backward Switch sign "open"
Lumbar pump Lumbar pump not active
Fill upper valve Fill upper valve not active
Bleed upper valve Bleed upper valve not active
Fill lower valve Fill lower valve not active
Bleed lower valve Bleed lower valve not active
Button up Button up open
Button down Button down open
Button backward Button backward open
Button forward Button forward open
Left mirror to right Left mirror to right not active
Left mirror to left Left mirror to left not active
Left mirror upward Left mirror upward not active
Left mirror downward Left mirror downward not active
Right mirror to right Right mirror to right not active
Right mirror to left Right mirror to left not active
Right mirror upward Right mirror upward not active
Right mirror downward Right mirror downward not active

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

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

Modify Coding
The following settings can be selected from the menu and encoded under the menu item Modify coding.

Coding Setting
Parking aid active/ not active
Upper lumbar present/ not present
Lower lumbar present/ not present
Parking aid on door mirror right/ left
Lowering 10 to 120 degrees

Procedure:
1. Select vehicle type.
2. Select Seat memory control module.
3. Select menu item Modify coding.
4. Select desired coding as described above and press the double arrow key.
5. Select the desired setting with the arrow keys and press the F8 key.

NOTE: The procedure for activating the parking aid is described in detail.

Activating The Parking Aid

General
The automatic lowering of the rearview mirror aids the driver during parking manoeuvres. The rearview mirror is lowered by the set value as soon as reverse gear is engaged. If reverse gear is disengaged again or the rearview mirror switch touched with reverse gear still engaged, the rearview mirror returns to its stored position.

NOTE: This function is only available in vehicles with seat memory.

The following settings can be selected from the menu and encoded using the Porsche System Tester 2.
- Parking aid (active or not active)
- Parking aid with rearview mirror (right or left)
- Lowering

The system function can be activated or deactivated under the menu item Parking aid.

Either the right-hand or left-hand rearview mirror is selected and activated under the menu item Parking aid with rearview mirror.

The degree to which the rearview mirror is lowered is set under the menu item Lowering.

Activating the parking aid
1. Connect the PST 2 with the ignition off, then switch the ignition on
2. Switch on the PST 2 and wait for the start-up screen
3. Press the [>>] key to go to the next level
4. Select the vehicle type 911 (996) in the lefthand window using the [down arrow] key
5. With the [down arrow] key, select the Seat memory control module and press the [>>] key to go to the next level
6. With the [down arrow] key, select the Coding control module and press the [>>] key to go to the next level
7. The Parking aid menu item is already highlighted on your screen. Press the [>>] key to alter the coding
8. Select the menu item active using the [down arrow] key
9. Press key F8 (coding)
The parking aid is now activated.
10. Press the [<<] key to switch between the right-hand or left-hand door mirror
11. With the [down arrow] key, select Parking aid with rearview mirror and press the [>>] key to alter the coding
12. Select the desired page right or left using key [down arrow] or [up arrow]
13. Press key F8 (coding)The selected rearview mirror is now activated
14. Press the [<<] key to set the degree of lowering of the door mirror
15. With the [down arrow] key, select Lowering and press the [>>] key to alter the coding 16. Select the desired degree of lowering using key [down arrow] or [up arrow]
17. Press key F8 (coding)
The selected degree of lowering has now been stored.
18. Press the [Esc] key 2x to quit this level Setting of the system is now complete.