how to fix the HVAC blower not working on my Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather tools: multimeter, socket set, screwdriver set, and safety goggles.
• Disconnect the vehicle's battery to ensure safety while working on electrical components.

2. Inspect and Replace Fuse

• Locate the fuse box under the dashboard or in the engine compartment.
• Find the fuse associated with the HVAC blower motor.
• Remove the fuse using a fuse puller or pliers and inspect it for continuity.
• If blown, replace it with a fuse of the same amperage (refer to the owner’s manual for specifications).

3. Test and Replace Blower Motor

• Reconnect the battery and turn the HVAC system to the highest fan setting.
• Use a multimeter to check for voltage at the blower motor connector.
  • If voltage is present but the motor does not operate, proceed to replace the blower motor.
  • If no voltage is present, inspect the wiring and relays leading to the motor.
• To remove the blower motor:
  • Remove any necessary panels or covers to access the motor.
  • Disconnect the wiring harness from the blower motor.
  • Unbolt the blower motor from its housing and remove it.
• Install the new blower motor by reversing the removal steps.

4. Inspect and Replace Blower Motor Resistor

• If the blower motor operates directly but not through the control panel, the resistor may need replacement.
• Locate the blower motor resistor, typically found near the blower motor.
• Disconnect the wiring harness and unbolt the resistor.
• Install the new resistor and reconnect the wiring harness.