Air Delivery Improper

Air Delivery Improper

Test Description

Step 1 - Step 12:

Step 13 - Step 22:

Step 23:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests for a blower motor that does not operate regardless of the desired blower motor speed.
4. This step tests for a blower motor that operates, yet does not accurately respond to the desired blower motor speed.
5. The HVAC control module is inoperative when the it does not respond to any operator requests. This step verifies that there is power to the HVAC control module.
13. The voltage will vary between 0-5 volts during normal operation. The HVAC control module connector must be connected during this step.