Offroad Stabilizers

Control Module Function (Coding/programming), Off-road Stabilisers

Integrated functions

The off-road stabiliser control module includes the functions listed below:
- Computer identification
- Computer configuration with ignition ON
- Checking the fault memory for fault entries, even in diagnostic mode
- Deleting the fault memory
- Reading measured values from switches and sensors

Supported functions:
- Diagnosis software number
- Drive link test with active fault checking

Basic setting:
- Initialisation
- Read memory
- Write memory
- Update programme
- Flash programme (end of volume)
- Protected against unauthorised access

Commissioning
When the ignition 'terminal 15' is switched on, an internal function test (initialisation phase) is performed in the off-road stabiliser control module. When the internal function test is completed successfully, all functions integrated in the off-road stabiliser control module are released.

Operating condition
The off-road stabiliser control module is in operating mode once the ignition is switched on and the internal function test is completed successfully. Within the defined limits for power supply and temperature, all incoming signals are processed by the integrated software and the appropriate monitoring and control processes are performed.

Data transfer
The off-road stabiliser control module sends and receives data/ information via the following 'CAN data bus':
- CAN drive (C)
- Gateway (in instrument cluster)

Diagnosis

Fault memory
Faults that occur during operation are stored in a non-volatile memory (e.g. EEPROM). The faults remain in memory even if no voltage is present at terminals 15 and 30. The fault memory is designed in such a way that the occurring faults, data source, fault type and fault deletion counter can be saved. The off-road stabiliser control module sends messages and checks the CAN drive cyclically for messages from other control modules. If no messages are received for a certain time period, a fault is stored in the fault memory.

Drive links
The following drive links can be selected individually in the Off-road stabilisers system using the 9588 Porsche System Tester II in the drive link test.
- Set front-axle valve 'to depressurise front system'
- Set rear-axle valve 'to depressurise rear system'
- Switch on electric hydraulic pump 'to bleed the system'
- Switch on front-axle valve 'to check the front system'
- Switch on rear-axle valve 'to check the rear system'
- Switch on front-axle and rear-axle valves in turn 'to completely disengage the system manually'