Test Step 2 - A/C Heater Control

• Turn the ignition on.
• Using the scan tool, erase HVAC DTCs.
• Turn the ignition off for 10 seconds, and then turn the ignition on and wait a minimum of two minutes.
• Using the scan tool, read HVAC DTCs.

Does the scan tool display this DTC as Active or is the status of the switch reading On?

Yes

• Replace and program the A/C Heater Control. Refer to REMOVAL AND INSTALLATION .
• Perform the HVAC Verification Test. Refer to HVAC .

No

• Test complete.
• Perform the HVAC Verification Test. Refer to HVAC .