how to replace the blower motor resistor on Honda Accord 9th Generation (2013-2017)

Honda Accord Eleventh Generation (2023-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

490 words

Problem Statement

Step-by-step guide on how to replace the blower motor resistor in a 2013-2017 Honda Accord. Includes symptoms, diagnostic steps, and tools required.

Affected Component

HVAC

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shock or short circuits.

Symptoms

•Blower motor only works on high speed
•Blower motor does not operate at all
•Intermittent blower motor operation
•Inability to adjust cabin temperature using fan speed settings
•Unusual noises from the blower motor when it operates

Diagnostic Steps

1
Inspect the blower motor fuse for continuity using a multimeter.
2
Check for voltage at the blower motor connector with the ignition on.
3
Test the blower motor by applying direct battery voltage to ensure it functions.
4
Scan for any diagnostic trouble codes (DTCs) related to the HVAC system.
5
Visually inspect the wiring and connectors for damage or corrosion.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set
•Screwdrivers (Phillips and flathead)
•Multimeter
•Torque wrench

Parts Required

•New blower motor resistor

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Diagnostic Steps

1
Inspect the blower motor fuse for continuity using a multimeter.
2
Check for voltage at the blower motor connector with the ignition on.
3
Test the blower motor by applying direct battery voltage to ensure it functions.
4
Scan for any diagnostic trouble codes (DTCs) related to the HVAC system.
5
Visually inspect the wiring and connectors for damage or corrosion.

Solution

1. Preparation

Gather tools and parts.
Disconnect the battery to ensure safety.
Tools Required:
- Socket set
- Screwdrivers (Phillips and flathead)
- Multimeter
- Torque wrench
Parts Required:
- New blower motor resistor

2. Access the Blower Motor Resistor

Locate the blower motor resistor, which is usually located under the dashboard on the passenger side.
Remove the lower dashboard panel using a socket set or screwdriver, depending on the fasteners used.
Disconnect the electrical connector from the blower motor resistor by pressing the tab and pulling it out.

3. Remove the Old Blower Motor Resistor

Unscrew the screws or bolts securing the blower motor resistor to the HVAC housing.
Carefully pull out the blower motor resistor from its position.

4. Install the New Blower Motor Resistor

Insert the new blower motor resistor into the HVAC housing, ensuring it fits securely.
Reinstall the screws or bolts to secure it in place, tightening them to manufacturer specifications (typically around 7-10 Nm).
Reconnect the electrical connector to the new blower motor resistor, ensuring it clicks into place.

5. Reassemble the Dashboard

Reattach the lower dashboard panel and secure it with the appropriate fasteners.
Reconnect the battery.