Replace the blower motor control module located in the HVAC plenum to restore proper climate control fan operation and speed control.

Warnings

Tools required

Parts

• Blower Motor Control Module × 1 — Use OEM Ford specification YH-1885 or equivalent
• Wire harness connector (if damaged) × 1 — Inspect original before ordering

Preparation

1. Park vehicle on level surface and turn ignition off
2. Disconnect negative battery terminal to prevent electrical shorts during module replacement
3. Allow HVAC system to cool completely if vehicle was recently operated
4. Open passenger door fully for working access
5. Gather all tools and new blower motor control module before starting

Procedure

1. 1

   Disconnect battery negative terminal
   Using a 10mm socket, loosen the negative battery terminal bolt. Remove the cable and secure it away from the battery post to prevent accidental contact during the repair.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
2. 2

   Remove glove box assembly
   Open the glove box and remove all contents. Squeeze the sides of the glove box inward to release the stop arms from their slots. Lower the glove box completely down past its normal stop point to access the area behind it. If equipped with a damper, disconnect the damper arm from the glove box.
3. 3

   Locate blower motor control module
   With the glove box lowered, look up into the HVAC plenum area on the passenger side. The blower motor control module is mounted on the HVAC case, typically a rectangular black or gray module with a wiring harness connector and cooling fins. Use a flashlight to identify the module and its mounting configuration.
4. 4

   Disconnect electrical connector
   Locate the wiring harness connector attached to the blower motor control module. Press the locking tab on the connector and carefully pull it straight off the module. Do not pull on the wires themselves. If the connector is tight, gently wiggle it while pulling to release it.
   ⚠The connector lock tab can be brittle on older vehicles. Apply gentle pressure to avoid breaking the tab.
5. 5

   Remove module mounting fasteners
   Using a 7mm socket or nut driver, remove the screws or bolts securing the blower motor control module to the HVAC case. There are typically 2-3 fasteners. Keep track of all fasteners as they are easily dropped in this area. Use a magnetic parts tray if available.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
6. 6

   Extract old control module
   Carefully pull the blower motor control module away from the HVAC case. The module may have thermal grease or a foam gasket between it and the case. Note the orientation and position of any gaskets or seals for reinstallation. Maneuver the module out through the glove box opening.
7. 7

   Inspect mounting surface and connector
   Clean the mounting surface on the HVAC case where the module sits. Remove any old thermal grease or debris. Inspect the wiring harness connector for corrosion, damage, or pushed-back pins. Check for any signs of overheating such as melted plastic or burnt wire insulation.
8. 8

   Install new blower motor control module
   Position the new blower motor control module in the same orientation as the original. Ensure any thermal pads or gaskets are properly positioned between the module and HVAC case. Align the mounting holes and start all fasteners by hand before tightening to ensure proper alignment.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
9. 9

   Reconnect electrical connector
   Push the wiring harness connector firmly onto the new blower motor control module until you hear or feel a positive click. Gently tug on the connector to verify it is fully locked in place. Verify the connector locking tab is fully engaged.
10. 10

    Reinstall glove box assembly
    Raise the glove box back into position. If equipped, reconnect the damper arm to the glove box. Guide the stop arms on each side of the glove box back into their slots by squeezing the sides inward and raising the glove box to its normal closed position. Test that the glove box opens and closes smoothly.
11. 11

    Reconnect battery negative terminal
    Place the negative battery cable back onto the negative battery post. Tighten the terminal bolt to the specified torque using a 10mm socket and torque wrench. Ensure the connection is secure but do not overtighten.
    ⚠Do not overtighten battery terminal bolts as this can damage the battery post or terminal.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Verify all fasteners are tightened to specification
2. Ensure no tools or parts were left in the HVAC plenum area
3. Confirm glove box operates normally and latches properly
4. Battery connection should be clean and tight

Verification

• Turn ignition to ON position (engine does not need to start)
• Set climate control to various fan speeds from low to high and verify smooth operation at all speeds
• Listen for abnormal noises from the blower motor area during operation
• Verify climate control responds properly to temperature and mode changes
• Check that the blower motor turns off completely when fan is set to OFF position
• Test both manual and automatic climate control modes if equipped with dual-zone or automatic climate control
• Confirm no warning lights or climate control error messages appear on the instrument cluster

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