Too Hot In Vehicle

Too Hot in Vehicle

Test Description

Step 1 - Step 11:

Step 12 - Step 19:

Step 20 - Step 25:

The numbers below refer to the step numbers on the diagnostic table.
4. The HVAC control module is inoperative when the module does not respond to an operator control request.
5. If the condition does not occur when an air conditioning (A/C) request has been made then you must bypass the A/C performance test procedures.
6. These actions are the enable criteria for the A/C compressor to operate. Ambient air temperature must be above 3°C (38°F) in order for this A/C compressor test to be run.
7. Performing the Air Conditioning System Performance Test ensures that the A/C system is operating properly for further testing.
9. If no condition found with all conditions listed then compare door travel to known good vehicle.
15. The voltage will vary between 0-5 volts during normal operation. Ensure to observe the air temperature actuator driveshaft and the volt meter when jumping the control circuit with 5-volt reference and the ground circuits. The air temperature actuator and the HVAC control assembly connectors must be connected during this step.