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

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in the B-CAN system diagnosis test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A )

Clear the DTC with the HDS
Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode
Wait for at least 6 seconds
Do the self-diagnostic with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS )
Check the DTCs
Is DTC B2969 indicated?

YES -Go to step 6

NO -Intermittent failure Check for loose wires or poor connections on the climate control unit connector C (20P)
Check for DTCs with the HDS (Do all system scan)
Are any of the following DTCs indicated, B1958, B1063, or B1156 indicated?

YES -Do the driver's MICU input test (see MICU INPUT TEST )

NO -Do the climate control unit power and ground troubleshooting (see CLIMATE CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING )