Transfer Box (VG)

Fault Code 0659

Self-test

Diagnostic conditions
- Ignition on
- Internal control module function test not completed successfully

Possible causes of fault
- When the ignition is switched on, an internal function test is performed in the transfer box control module, but this was not completed successfully (implausible signal)

NOTE: The internal function test must be completed successfully before the functions in the transfer box control module can be released.

Affected pins
Transfer box control module plug:

Diagnosis/troubleshooting VG 0101

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