The number(s) below refer to the step number(s) on the diagnostic table.
This step tests for a blower motor that does not operate regardless of the desired blower motor speed.
This step tests for a blower motor that operates, yet does not accurately respond to the desired blower motor speed.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: Air does not flow correctly from the air distribution outlets. | |||
1 | Did you review the HVAC operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Is the blower motor OFF? | Go to Step 3 | Go to Blower Motor Always On |
Place the blower motor switch in each speed position. Does the blower motor operate at all? | Go to Step 4 | Go to Blower Motor Inoperative | |
Does the blower motor operate in each speed position? | Go to Step 5 | Go to Blower Motor Malfunction | |
5 |
Is the airflow sufficient from the correct outlets in each mode? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Vacuum Diagnosis |