Software Monitoring B Of Signal Processing Unit

P18A0

Diagnosis information - PDK

Software monitoring B of signal processing unit

Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are then tested and any faults are stored.
- Ignition on

Possible fault causes
- PDK control unit faulty

Fault setting conditions
- Complement error

Fault effects
- CAN alive counter freeze
- Engine speed limitation
- Transmission limp-home indication in instrument cluster control unit