Alarm System I32; 148
Alarm system I32; 148
Component arrangement
1 - Control module (installation position for tilt sensor as of MY 2003).
- For vehicles without antenna diversity, the antenna lead is laid with the wiring harness in the A-pillar.
- For vehicles with a radio, the antenna lead is connected to the antenna amplifier.
- For vehicles with PCM2, the antenna lead is connected to the left antenna diversity.
- 1a - Fuse on control module (15 A).
2 - Transponder coil and signal converter.
3 - Central locking button (central locking switch).
4 - Front lid micro switch.
5 - PCM alarm contact.
- 5a - Radio alarm contact.
6 - Alarm horn (country version).
NOTE: If the positive supply for the alarm horn is interrupted, a visual alarm is triggered via the direction indicator and interior lights.
7 - Alarm readiness light.
8 - Glove compartment micro switch.
9 - Tilt sensor (installation position up to MY 2002).
10 - Passenger compartment monitoring sensor.
11 - Rear lid micro switch.
12 - Micro switches for left and right door lock modules.
13 - Release switches for front and rear lid.
14 - Micro switch for oddments tray.
15 - Antenna lead for alarm system.
- For vehicles without antenna diversity, the antenna lead is laid with the wiring harness in the A-pillar.
- For vehicles with a radio, the antenna lead is connected to the antenna amplifier.
- For vehicles with PCM2, the antenna lead is connected to the left antenna diversity.
Function of individual components
1. Control module
Processes the incoming signals and, if necessary, triggers an alarm.
1a. Control module fuse
A 15 A fuse is located in the control module between both slots which protects the control module from short circuit at the output. If this fuse blows, the control module functions are no longer available.
2. Transponder coil and signal converter
The transponder coil reads the transponder code out of the transponder.
The signal converter obtains the transponder code from the signals sent by the transponder, and then sends this code on to the alarm system control module. Using the Porsche System Tester II No. 9588, the transponder of the key inserted in the ignition lock can be adapted to one of the 4 memory locations for transponders. The first time the transponder is adapted, its Secret Key is programmed. The Secret Key of the transponder can no longer be overwritten, i.e. a programmed and adapted transponder is permanently assigned to one vehicle.
3. Central locking button
The doors can be locked and unlocked using the central locking button.
4. Front lid micro switch
The alarm contact on the front lid connects ground to the control module when the lid is opened.
5. PCM alarm contact
The alarm contact on the PCM mounting frame connects ground to the control module when the PCM is removed from the mounting frame.
5a. CDR23 alarm contact
The alarm contact on the radio mounting frame connects ground to the control module when the radio is removed from the mounting frame.
6. Alarm horn (country version)
In the event of an alarm, the horn is supplied with positive potential by the control module.
NOTE: If the positive supply for the alarm horn is interrupted, a visual alarm is triggered via the direction indicator and interior lights.
7. Alarm readiness light
Function 1.
Display of the locking state.
Function 2.
Display of the operating state of the alarm system.
Six display types are possible:
- Off
- On
- Normal flashing (0.5 Hz)
- Double flashing (0.5 Hz)
- Rapid flashing (2.0 Hz)
- Rapid flashing (10.0 Hz)
8. Glove compartment micro switch (as of MY 2003)
The status of the glove compartment is recorded by a micro switch and reported to the alarm system control module by connecting ground (Open).
9. Tilt sensor (installation position up to MY 2002)
The tilt sensor measures the tilt of the vehicle. If the programmed limit value of a change in tilt is exceeded, an alarm is triggered.
NOTE:
- If the positive supply for the tilt sensor is interrupted, a visual and audible alarm is triggered via the direction indicator and interior lights and the alarm horn (alarm siren).
- A valid transponder must be inserted into the ignition lock to prevent the alarm.
10. Passenger compartment monitoring sensor and convertible top closed switch
The passenger compartment monitoring sensor connects ground to the control module when movement is detected in the vehicle. The convertible top switch is located behind the passenger compartment monitoring sensor. The switch connects ground to the control module. The function of the switch can be examined under "Convertible top/sliding roof" in the Input signals menu.
11. Rear lid micro switch
The status of the rear lid is recorded by a micro switch and reported to the alarm system control module by connecting ground (Open).
12. Micro switches for left and right door lock modules
Each door lock (driver's/passenger's door) contains 5 micro switches:
- 1 switch for priming the system (ground pulse).
- 1 switch for deactivating the system (ground pulse).
- 1 switch for recognising door closed.
- 1 switch for recognising door locked.
- 1 switch for recognising door secured.
13. Release switches for front and rear lid.
There are two switches for opening the front and rear lid.
14. Micro switch for oddments tray
The status of the oddments tray is recorded by a micro switch and reported to the alarm system control module by connecting ground (Open).
15. Antenna for alarm system control module
For vehicles without a radio or PCM2, the hand-held transmitter and alarm system control module communicate via a lead which is fastened to the wiring harness in the A-pillar.
For vehicles with a radio or PCM2, communication with the alarm system control module takes place via antenna amplifier or antenna diversity using the antenna lead laid in the A-pillar.