Control Unit Function
Control Unit Function
Activating and deactivating alarm system
The alarm system is activated by a ground signal at the activation input or by an activation signal from the hand-held transmitter.
The activation of the system is ignored if pin 86 S, pin 15 or a valid transponder key is recognized.
If for some reason it is not possible to lock the central locking system with a single locking command, the alarm system is not activated. Activation of the alarm system cannot be achieved until the central locking system is locked (manually if necessary) and a new activation command is issued or only locking is performed three times in quick succession. The interval between two locking operations must not be more than 1 second in this case. If the system is activated by this emergency function, the central locking system is locked without checking whether it can be completely locked.
The system saves the type of activation in a status memory. If an alarm is triggered, this information is written to the alarm memory together with the alarm coding.
When the alarm system is activated, the inactive level of all inputs is checked for an inactive period of 10 seconds. Only inputs which are inactive for the entire inactive period can trigger the alarm after the end of the inactive period. All other inputs are blocked for alarm triggering for as long as they are in the active state. If the inactive state occurs at blocked inputs, the inactive period is started for them individually. All inputs which remain in the inactive state during the inactive period are then included in the alarm evaluation.
The inactive period commences immediately after activation if.
- it is apparent that the central locking system is locked or if locking occurred three times in succession.
- the Activate signal is no longer present. (A second activation command for cancelling the anti-theft protection restarts the inactive period).
In the case of an active signal at the inputs pin 86 S, pin 15 or if a valid transponder key is recognized, no activation is possible. If one of these inputs is active at the time of locking, control of the central locking system does not take place. The central locking system is opened if one of these inputs becomes active during the inactive period, since in this case the alarm system is also deactivated.
If, when the vehicle is locked, a door is unlocked after the 10 seconds inactive period, this is immediately actuated to Closed An alarm is triggered at the same time. If, when the vehicle is locked, a door is unlocked from the inside during the inactive period, the central locking system is unlocked and the alarm system is deactivated. (Protection against unintentional locking/activation).
If, within 15 seconds of switching on the External Electronics output, movements in the vehicle are detected by the passenger compartment monitoring system, the central locking system is changed to the locked position and the alarm system is deactivated.
After the inactive period, the External Electronics output is switched on if the alarm-triggering inputs, such as doors, convertible top, convertible top compartment cover, front luggage compartment and rear engine compartment, were inactive for the entire inactive period. If one of these inputs is active, the External Electronics output is not switched on until this input becomes inactive and remains in this state for at least 10 seconds. The switched-on External Electronics output cannot be deactivated again by activating one of the above inputs. The output is switched off when deactivation takes place.
If, within a period of less than 1 second after the first activation pulse, a second activation command is issued, the External Electronics output is not switched on for one activation cycle. In this case, the central locking system is not secured, but only locked. This is acknowledged by signal 1 at the alarm horn and at the direction indicator light output, as well as during the deactivation period by the display type 3 at the alarm readiness display output and at the Door locked display output. An opening command deletes the switch-off command.
If activation occurs by way of the emergency function (locking 3 times quickly), the External Electronics output is not switched on for this activation cycle. This is acknowledged by signal 1 at the alarm horn and direction indicator light outputs, as well as by display type 2 at the alarm readiness display output. A deactivation command deletes this command.
If pin 86 S, pin 15 or a valid transponder key is recognized during the deactivation period, the alarm system is deactivated (protection against unintentional activation). The central locking system is opened in this case.
A system self-test is carried out upon activation. The result of this test is acknowledged via the alarm readiness light and the Door locked display and can be called up from the status memory via the diagnosis function. Equipment faults are written to the fault memory. Faults are indicated at the alarm horn and direction indicator light outputs by signal 2.
The alarm system is deactivated by a ground signal at the Deactivate input or by a deactivation signal from the hand-held transmitter. If a valid transponder key is recognized, the alarm system is also deactivated.
Alarm triggering and alarm output
The alarm functions can be triggered only in the primed state. A non-blocked alarm input triggers an alarm in the primed state with an active signal. The alarm-triggering input then remains blocked for further alarm triggering until it returns to the inactive state. Then, following expiry of the inactive period of 10 seconds, it is again included in the alarm evaluation, provided that it was inactive for the entire inactive period.
In a priming cycle, the inputs Passenger compartment monitor, External 1 trigger a maximum of three alarms.
The alarm output is via:
Horn depending on the country coding.
Direction indicator lights
Interior lights asynchronously with the direction indicator lights, depending on the country coding.
The alarm output with all associated actions is interrupted immediately in the event of deactivation.
Learning function
Immobilizer
The immobilizer code can be entered under the Learning functions menu item in the I48 function selection after the alarm system control module is replaced.
CAUTION: The immobilizer code cannot be deleted or changed again. An incorrect input will render the control module useless.
Enter and check immobilizer code carefully.
Transponder key
A new transponder can be adapted for the vehicle under the Learning functions/Transponder key menu item. The old transponders can be taught to the new control module after the alarm system control module is replaced and the immobilizer code is entered. Refer to the chapters "Teaching hand-held transmitter" and "Reading out remote controls".
Remote control
Up to four remote controls can be adapted to the control module under the Learning functions/remote control menu item. The old remote controls can be taught to the new control module after the alarm system control module is replaced and the immobilizer code is entered. Refer to the chapter "Teaching hand-held transmitter".
Reading out remote controls
Under the Read out remote controls menu item, the data of the remote controls can be read out after the alarm system control module is replaced. If it is not possible to read out and transfer the remote controls (e.g. no communication with the control module), the old remote controls can be adapted to the new control module (teaching hand-held transmitter).
Transferring remote controls
The data read out from the remote controls can be transferred to the new control module under the Transfer remote controls menu item.
Coding
Four functions are available for selection under the Coding menu item:
- Country coding
- Version coding
- Vehicle re-locking
- Alarm siren/tilt sensor
Country coding
The country in which the vehicle is used as well as the vehicle design (sliding roof, Cabrio) can be coded using the Porsche System Tester II 9588.
The type of alarm output and its duration depend on the country codes.
Allocation of country coding
Allocation Of Country Coding (Part 1):
Allocation Of Country Coding (Part 2):
Allocation Of Country Coding (Part 3):
Allocation Of Country Coding (Part 4):
Allocation Of Country Coding (Part 5):
Allocation Of Country Coding (Part 6):
Allocation Of Country Coding (Part 7):
Allocation Of Country Coding (Part 8):
Allocation Of Country Coding (Part 9):
Allocation Of Country Coding (Part 10):
Version coding
Four versions can be selected under the Version coding menu item.
Version 1
The doors are automatically locked as soon as the ignition is switched on.
Version 2
The doors are automatically locked if the vehicle exceeds a limit speed of 5 km/h.
Version 3
The doors are automatically locked as soon as the ignition is switched on. If the doors are opened while the engine is running, automatic re-locking takes place if the vehicle exceeds a limit speed of 5 km/h.
Version 4
The doors are not locked automatically.
NOTE: Automatically locked doors can be opened by pressing the central locking button (central locking switch) or by pulling on the door handle twice.
Crash signal
The airbag control module emits a signal to the alarm system control module no later than 35 seconds after pin S is switched on and until such a time as pin S is switched off again. This signal has a frequency of 10 Hz and indicates two states.
- Normal state (live signal) and
- Crash state
The two states differ in the pulse/duty ratio of the signal.
Signal evaluation begins 45 seconds after pin 86 S is switched on. If no signal is detected from the airbag control module, a corresponding fault is entered in the fault memory.
Power window control
The alarm system control module not only enables power-window control, but also controls the comfort functions. If the central locking button on the hand-held transmitter is still pressed after an unlocking command has been given, the windows are switched to open. For a locking command with the central locking button on the hand-held transmitter (if the button is still pressed), the windows are switched to Closed (country variant).
Reading out and transferring remote control
General
When replacing the alarm system control module, it is possible to read out remote controls from the old control module and transfer them to the new control module. In this way, the hand-held transmitters (remote controls and transponders) can be retained. In other words, it is not necessary to change the hand-held transmitter when replacing the alarm system control module.
Requirements
- Communication can be established between the Porsche System Tester II 9588 and the alarm system control module.
- The remote controls and transponders are correct and functional.
NOTE:
- When the remote control is read out and transferred, only the remote control data is read out and transferred.
- The transponder of the individual keys must be adapted to the control module. Four positions are available for this purpose in the Transponder key menu item. This function is described from step 19 onward.
Work preparation
The following information is required from the IPAS for reading out and transferring remote controls:
- Key learning code
- Immobilizer code
Procedure
1. Connect the Porsche System Tester II 9588 to the data link connector, start it and switch on the ignition.
2. Select vehicle type Boxster (986) and start the automatic control module search with the double arrow key.
3. After a brief search, the Porsche System Tester II 9588 reports: Fault memory reading completed.
4. Select alarm system control module and press the double arrow key.
5. Select Learning functions in the menu and press the double arrow key.
6. Select the Read out remote control menu item and press the double arrow key.
7. Input key learning code appears on the screen. Enter the key learning code with the arrow keys and press the double arrow key.
8. Please confirm input appears on the screen. Check the key learning code you entered and press the F7 key.
9. Remote controls were read out appears on the screen. Press the double arrow key << twice in order to change to the control module overview. Switch the ignition off, remove the old control module, install the new control module and switch the ignition on again.
10. Press the double arrow key to set up communication with the new control module.
11. Select the Learning functions menu item with the arrow key and press the double arrow key.
12. The Immobilizer menu item is already selected.
Press the double arrow key.
CAUTION: The immobilizer code can be input only once.
An incorrect input will render the control module useless.
- Input and check immobilizer code carefully.
13. Input immobilizer code appears on the screen. Enter the immobilizer code with the arrow keys and press the double arrow key.
14. Please confirm input appears on the screen. Check the immobilizer code you entered and press the F7 key.
15. Select the Transfer remote control menu item with the arrow key and press the double arrow key.
16. Input key learning code appears on the screen. Enter the key learning code with the arrow keys and press the double arrow key.
17. Please confirm input appears on the screen. Check the key learning code you entered and press the F7 key.
18. Remote controls were transferred appears on the screen.
19. Select the Transponder key menu item with the arrow key and press the double arrow key.
20. Input key learning code appears on the screen. Enter the key learning code with the arrow keys and press the double arrow key.
21. Please confirm input appears on the screen. Check the key learning code you entered and press the F7 key.
NOTE: As the transponder coils must be taught individually, make sure that the allocation of the locations is the same as described under Transponder code on the IPAS printout (see step 22).
22. Four unoccupied positions are displayed on the screen. Position 1 is marked in black. Furthermore, the current transponder code is displayed under Current key. This code must be stored in the same location as specified in the IPAS printout. Select position and press the F8 key. The corresponding transponder code is assigned to the position.
23. Withdraw the key and repeat steps 19 to 22 for the remaining keys.
All remote controls have now been transferred from the old control module to the new control module, and the transponders adapted to the new control module.
- Check all hand-held transmitters for operation (lock and unlock the vehicle).
- Check that all transponders function correctly (start engine).
- Read out fault memory and delete any stored faults.
Radio remote control
If a command is issued via the hand-held transmitter, this is acknowledged with display type 4 at the alarm readiness display for the duration of the operation.
Commands triggered and correctly executed via the hand-held transmitter are acknowledged as follows at the output for the direction indicator lights.
- Secure with signal 2
- Lock with signal 3
- Unlock with signal 1
Depending on the country, the check back signal can be programmed using the Porsche System Tester II 9588.
All other functions, such as interior light control, are controlled in the same way as with the vehicle key.
If operating commands are simultaneously present from the hand-held transmitter and the door lock barrels, the signal recognized first has priority.
Function display and audible check back
The operating state of the central locking system is fed back via the output Door locked and by corresponding activation of the interior light (signals 1 to 3). The operating state of the alarm system is also indicated during the inactive period by the alarm readiness display (display types 1 to 6). It is indicated exclusively by the alarm readiness display after the inactive period has expired. Displayed system faults are always current faults. Previous system faults entered in the status memory have no effect on the function display.
Display type 1 (normal flashing)
Requirement: Alarm system primed
No alarm output or no active alarm input after re-locking if no alarm input is active.
Duration: Until deactivation, then display type 6.
LED flashes with a
frequency of 0.5 Hz
On time 100 ms
Out time 1,900 ms
Display type 2 (double flashing)
Requirement: After alarm output or active alarm input following activation or re-locking.
Duration: Until deactivation, then display type 6.
LED flashes with a
frequency of 0.5 Hz
On time 1,2 100 ms
Out time 1 200 ms
Out time 2 1,700 ms
Display type 3 (rapid flashing)
Requirement: Alarm system primed
No active alarm inputs.
Duration: Inactive period, then display type 1.
LED flashes with a
frequency of 2 Hz
On time 100 ms
Out time 400 ms
Display type 4 (rapid flashing)
Requirement: Reception of an adapted hand-held transmitter.
Duration: Push of the button
LED flashes with a
frequency of 10 Hz
On time 50 ms
Out time 50 ms
Display type 5 (on)
Requirement: After central locking system emergency locking or after locking command is given twice via hand-held transmitter or door lock.
Duration: For inactive period following central locking system emergency locking, then display type 2 for inactive period following locking command given twice, then display type 1.
LED is continuously on.
Display type 6 (off)
LED is not switched on.
In addition, the check back of faults and of the standard status is performed with signal 3 at the interior light output. An audible check back via the alarm horn output also takes place at the alarm system control module, together with a visual check back via the outputs for the direction indicator lights.
Signal 1:
The outputs are triggered
once.
On time 50 ms
Signal 2:
The outputs are triggered
twice.
On time 1,2 50 ms
Out time 200 ms
Signal 3:
The outputs are triggered
once.
On time 2,500 ms
These functions can be switched on and off with the Porsche System Tester II 9588, depending on the country variants. The times are freely programmable.
Assignment of the display type of the alarm readiness light to the operating state.
If a control command is issued via the hand-held transmitter, this is confirmed with display type 4 for the duration of the operation. This display has priority.
Teaching hand-held transmitter
General
Up to four hand-held transmitters can be adapted to the control module. The hand-held transmitter is used to operate the central locking system and to open the luggage compartment (front lid). Furthermore, the stored seat, mirror and lumbar support positions are set when the vehicle is unlocked with the hand-held transmitter. See also the chapter "Control module function - Seat memory system S 02". This now includes the immobilizer function using the integrated transponder.
Work preparation
The following information is required to teach the hand-held transmitter:
- Key learning code from IPAS.
- 24-digit Code No. (see bar code label on key grip).
- If the key is stolen or the hand-held transmitter is faulty, all keys still in the customer's possession will be required.
NOTE:
- During maintenance work, please bear in mind that the transmission frequency of the hand-held transmitter is different depending on the country of use. The corresponding reception frequency is printed on the alarm system control module. This reception frequency is either.
- 433 MHz with M-number M534
- 315 MHz with M-number M535; refer to the allocation table for country coding
Procedure
1. Connect the vehicle keys and the new hand-held transmitter and insert in the ignition.
2. Connect the Porsche System Tester II 9588 and switch on the ignition.
3. Select Alarm system in the menu and press the double arrow key.
4. Select Learning function in the menu and press the double arrow key.
5. Select Transponder key in the menu and press the double arrow key.
6. Input key learning code appears on the screen. Enter the key learning code with the arrow keys and press the double arrow key.
7. Please confirm input appears on the screen. Check your entry and press the F7 key to confirm the input.
8. Differentiate between teaching an additional hand-held transmitter and the loss or faulty operation of a transponder.
8a. Teaching an additional hand-held transmitter Select a free position (1, 2, 3 or 4) with the arrow key and press the F8 key.
The transponder code is now stored at the selected position. Note the position of the new transponder code.
8b. Teaching in the case of a lost or faulty hand-held transmitter
CAUTION:
- Risk of theft due to lost hand-held transmitter.
- It is essential to delete the transponder code of the lost hand-held transmitter as described in step 8 b).
- It is essential to delete the radio code of the lost hand-held transmitter as described in step 12 b).
NOTE: The adjustment function of the seat, mirror and lumbar positions via the hand-held transmitter is correct only if the radio code and the transponder code of a hand-held transmitter are each stored at the same position in the alarm system control module.
F3 All codes will be deleted F7
In this case, it is first necessary to identify and delete the stored transponder code of the lost or faulty hand-held transmitter. All remaining vehicle keys are required for this purpose because all transponder codes are erased during the deletion function. Porsche System Tester II 9588 and the control module. Select the position (1, 2, 3,or 4) with the arrow keys F8
9. Press the double arrow key <<, select the Remote control menu item and press the double arrow key >>.
10. Input key learning code appears on the screen. Enter the key learning code with the arrow keys and press the double arrow key.
11. Please confirm input appears on the screen. Check your entry and press the F7 key to confirm the input.
12. Distinguish between loss and fault and additional hand-held transmitter for the radio code.
12a. Teaching an additional hand-held transmitter.
Select the same position (1 to 4) as for the transponder key and press the F8 key.
12b. Teaching in the case of a lost or faulty hand-held transmitter.
In this case, it is first necessary to identify and delete the stored "radio code" of the lost or faulty hand-held transmitter. The remaining hand-held transmitters are required for this purpose.
Press the locking button on the hand-held transmitter and then insert the vehicle key into the ignition lock, switch on the ignition and establish communication with the control module.
The radio code of the hand-held transmitter that was last used to unlock the vehicle is displayed under Current radio code.
Compare this radio code with the radio codes at positions 1 to 4. This comparison allows the position of the lost hand-held transmitter (radio code) to be identified, as one radio code is ultimately left over at positions 1 to 4.
Insert the vehicle key equipped with the new hand-held transmitter into the ignition lock and switch on the ignition. Establish communication with the control module. Select the identified position with the arrow keys and delete the radio code with the F3 key. Then press the F8 key.
13. Carefully enter the 24-digit code number with the arrow keys and press the double arrow key.
14. Please confirm input appears on the screen. Check the input and press the F7 key.
15. Now the hand-held transmitter is taught. Go back to the Learning function menu item, remove the key and switch on the ignition again. Once the key has been removed again, the hand-held transmitter is ready for use. Check that the hand-held transmitter operates correctly.