Operation CHARM: Car repair manuals for everyone.

Automatic Temperature Control






B2214-Climate Control Internal

For a complete wiring diagram, refer to.

When Monitored: Continuously with the ignition on.

Set Condition: If the A/C Heater Control detects an internal controller malfunction.






Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to => Non-DTC Based
Diagnostics. HVAC Pre-Diagnostic Troubleshooting Procedure

Test Step 1 - CHECK THE A/C HEATER CONTROL



Repair

Check for any controller software updates if applicable. If an update is available, reprogram the controller with the latest software. If no software updates are available, replace and program the A/C Heater Control.

Perform the HVAC Verification Test. Refer to => Non-DTC Based Diagnostics. HVAC Verification Test