how to check the blower motor resistor in my Tesla Outback 4th Generation (2010-2014)

Subaru Outback 4th Generation (2010-2014)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

501 words

Problem Statement

Learn how to check and replace the blower motor resistor in your 2010-2014 Subaru Outback. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

HVAC

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent shock or shorts.

Symptoms

•Blower motor operates only at certain speeds or not at all
•Inconsistent air flow regardless of the speed setting
•No air blowing from the vents when the fan is set to high
•A burning smell or electrical odor from the dash area
•Dashboard warning lights illuminating intermittently

Diagnostic Steps

1
Inspect the vehicle for any visible damage or loose connections at the blower motor and resistor.
2
Use an OBD-II scanner to check for any error codes related to the HVAC system.
3
Disconnect the battery to ensure safety while inspecting electrical components.
4
Locate the blower motor resistor, typically found near the blower motor under the dashboard on the passenger side.
5
Use a multimeter to measure resistance across the resistor terminals according to manufacturer specifications.
6
Check the wiring harness for continuity and signs of corrosion or damage.

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

•OBD-II scanner
•Multimeter
•Socket set
•Screwdrivers

Parts Required

•Blower motor resistor

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Diagnostic Steps

1
Inspect the vehicle for any visible damage or loose connections at the blower motor and resistor.
2
Use an OBD-II scanner to check for any error codes related to the HVAC system.
3
Disconnect the battery to ensure safety while inspecting electrical components.
4
Locate the blower motor resistor, typically found near the blower motor under the dashboard on the passenger side.
5
Use a multimeter to measure resistance across the resistor terminals according to manufacturer specifications.
6
Check the wiring harness for continuity and signs of corrosion or damage.

Solution

1. Preparation

Gather the necessary tools, including a multimeter, socket set, and screwdrivers.
Disconnect the negative battery terminal to prevent electrical shock.

2. Remove the Blower Motor Resistor

Locate the blower motor resistor under the dashboard on the passenger side.
Remove any panels or covers obstructing access using a socket set or screwdriver.
Disconnect the wiring harness from the resistor by pressing the release tab.
Unscrew the blower motor resistor from its mounting location using the appropriate socket.
Carefully remove the resistor from the housing.

3. Inspect and Replace

Visually inspect the resistor for signs of damage, such as burn marks or corrosion.
If damaged, install a new blower motor resistor by reversing the removal process:
- Position the new resistor in place and secure it with screws.
- Reconnect the wiring harness, ensuring it clicks into place.

4. Reassemble and Test

Reattach any panels or covers that were removed.
Reconnect the negative battery terminal.
Start the vehicle and test the blower motor at various speed settings to ensure proper operation.