Fault Code 16353

Fault Code 16353

Control unit malfunction
This fault causes the power/voltage supply to the servo motor 'A/B', brakes 'A/B', sensors and CAN communication to switch off.

Diagnostic conditions

NOTE: The internal function test must be completed successfully before the functions stored in the transfer box control unit can be activated.

- Ignition on
- Internal transfer box control unit function test

Possible causes of fault
- 'Implausible signal': fault detected in computer during internal function test in transfer box control unit.

Affected pins
Transfer box control unit plug:
- Pin '-'

Diagnosis/troubleshooting

NOTE: Before replacing the control unit, the ground connections, power supply and plug connections on the control unit must be checked. After the test drive, read out the fault memory with the Porsche System Tester II N0. 9588 again. Additional causes of faults that could damage the transfer box control unit should be detected and remedied.