Control Module HVAC: Testing and Inspection

HVAC System Control Module Programming and Setup

Each of the following service procedures may require programming or setup procedures to be performed on the HVAC control module or HVAC actuators.

HVAC Control Module Replacement

If the HVAC manual or HVAC automatic control modules are replaced, an automatic re-calibration of all the actuators will occur. For the best re-calibration results, start and run the engine for at least one minute after installing the new module. Do not adjust any controls on the HVAC control module during the re-calibration procedure. If interrupted, improper HVAC performance may result. No additional procedures are necessary.

HVAC Control Module Reprogramming

Do not reprogram the HVAC control module unless directed by a service procedure or a service bulletin.

Perform Set Up New HVAC under Module Set Up for the replacement HVAC Control Module using the Tech 2.

Actuator Replacement

If an actuator is replaced, the following procedure must be performed.

Re-Calibrating Actuators-Refer to Actuator Recalibration Actuator Recalibration for the automatic system.