P3221

2DDC - P3221

Information saved in
DME

Fault code
2DDC - P3221

Fault text
No message from SZL, DME receiver, SZL transmitter

Fault description
No message from SZL steering column switch cluster

Condition for fault identification
Test condition:
Checksum check on cruise control_operation message
Terminal condition: 800 ms after Terminal 15
Voltage condition:
battery voltage >10 V

Condition for fault memory entry
500 ms

Action in service
- Check SZL steering column switch cluster ECU
- Check powertrain / CGM Central Gateway Module / SI
bus
- Measure bus resistance
- Check wiring harness
=> Replace ECU as indicated

Fault effect and breakdown warning
none

Driver information
Warning light:
none

Service instruction
none