B2969

Control System DTCs

DTC Troubleshooting: B2969

DTC B2969 : Climate Control Unit Lost Communication with MICU (WIPSW message)


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 How to Troubleshoot the Climate Control System.

-4. Check the DTCs.





Is DTC B2969 indicated?
-YES- Go to MICU DTC U1280 troubleshooting Multiplex Integrated Control Unit.
-NO- The system is OK at this time. Check for loose wires or poor connections on the MICU and the climate control unit circuit.