HVAC Module Cold Boot Process

HVAC MODULE COLD BOOT PROCESS

The purpose of the cold boot process is to allow the HVAC module to reinitialize. To carry out the cold boot process, follow the steps below.

1. NOTE: HVAC module - DATC only.

Clear the DTCs.

2. Turn the ignition switch to the OFF position.
3. Disconnect the HVAC module electrical connectors.
4. Inspect module connectors for:
- corrosion.
- pushed-out connectors.
- incorrectly seated connector.

5. Wait one minute.
6. Connect the HVAC module electrical connectors.
7. Turn the ignition switch to the ON position.
8. Select any position except OFF on the HVAC module.

The HVAC module will now initialize.