Vehicle Electrical System (BNSG)

Fault code 0576

Terminal 15

Diagnostic conditions
- Ignition on
- Internal control module function test
- The fault must occur at least three times before it is stored in the fault memory

Possible causes of fault

NOTE:
Cyclical monitoring and comparison of the terminal 15 digital signal (KESSY control module) received via CAN comfort and the incoming terminal 15 analogue signal (KESSY control module) is performed in the vehicle electrical system control module. If different comparison values are detected, a fault is stored in the fault memory.
- 'implausible signal' Compares the incoming terminal 15 analogue signal (KESSY control module) with the terminal 15 digital signal which the KESSY control module sends to CAN comfort.

Affected pins
Plug 'A' on vehicle electrical system control module:
- Pin 21 'input for terminal 15 analogue signal/fuse carrier at left of dashboard (F53)'
- Pin 1 'CAN comfort (high)'
- Pin 2 'CAN comfort (low)'

NOTE:
- Before replacing the control module, the ground connections, power supply and plug connections on the control module must be checked.
- When replacing the vehicle electrical system control module, observe the coding of the control module.
- After the test drive, read out the fault memory with the Porsche System Tester II No. 9588 again. Additional causes of faults that could damage the vehicle electrical system control module should be detected and remedied.

Diagnosis/troubleshooting