DTC B2970: Climate Control Unit Lost Communication with Relay Control Module (RM message)
WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. 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 ON (II).
- Wait for 6 seconds or more.
- Do the self-diagnostic with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ).
- Check the DTCs.
Is DTC B2970 indicated?
YES - Go to step 6.
NO - Intermittent failure, check for loose wire or poor connection on the climate control unit connector A (40P).
- Check for DTCs with the HDS.
Are any of the following DTCs indicated; B1005, B1959, B2162 or B1158 indicated?
YES - Do the relay control module input test (see GAUGE CONTROL MODULE INPUT TEST ).
NO - Do the climate control unit troubleshooting (see CLIMATE CONTROL UNIT TROUBLESHOOTING ).