Climate Control Unit

Control System DTCs

DTC Troubleshooting: U1280 - (80)

DTC U1280 or DTC indicator 80 : Communication Bus Line Error (BUS-OFF)

1. Problem verification:

-1. Clear the DTCs with the HDS.

-2. Turn the ignition switch to LOCK (0), and then back to ON (II).

-3. Do the Self-Diagnostic Function with the HDS or the climate control unit How to Troubleshoot the Climate Control System.

-4. Wait for at least 6 seconds.

-5. Check for DTCs.

Is DTC U1280 or 80 indicated?
-YES- Go to the MICU U1280 troubleshooting Multiplex Integrated Control Unit.
-NO- Intermittent failure, the system is OK at this time.