my Toyota Corolla E170 (2013-2019) wipers don't work what should I check

Toyota Corolla E170 (2013-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

478 words

Problem Statement

Learn how to diagnose and fix wiper issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.

Symptoms

•Wiper switch does not activate wipers
•Wipers are stuck in one position
•Wipers work intermittently
•Strange noises when attempting to operate the wipers
•Wiper fluid does not spray

Diagnostic Steps

1
Inspect the wiper fuse for continuity using a multimeter.
2
Check the wiper motor connection for any loose or corroded wires.
3
Use an OBD-II scanner to check for any relevant trouble codes.
4
Test the wiper switch for proper operation using a multimeter.
5
Verify the condition of the wiper blades and arms for any physical obstruction.
6
Check the wiper relay operation by swapping it with a known good relay.

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

•Multimeter
•OBD-II scanner
•Screwdriver set
•Fuse puller or needle-nose pliers

Parts Required

•Wiper fuse (if blown)
•Wiper switch (if faulty)
•Wiper relay (if defective)
•Wiper motor (if needed)

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Diagnostic Steps

1
Inspect the wiper fuse for continuity using a multimeter.
2
Check the wiper motor connection for any loose or corroded wires.
3
Use an OBD-II scanner to check for any relevant trouble codes.
4
Test the wiper switch for proper operation using a multimeter.
5
Verify the condition of the wiper blades and arms for any physical obstruction.
6
Check the wiper relay operation by swapping it with a known good relay.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Wiper Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Remove the wiper fuse using a fuse puller or needle-nose pliers.
Inspect the fuse for continuity; replace if blown with a fuse of the same amperage (typically 10A).

3. Check Wiper Motor and Connections

Reconnect the negative battery terminal.
Locate the wiper motor, usually mounted at the base of the windshield.
Disconnect the electrical connector from the wiper motor.
Inspect the connector and wires for damage or corrosion.
If damaged, repair or replace the wiring harness or connector.

4. Test Wiper Switch

Remove the wiper switch from the steering column using a screwdriver.
Use a multimeter to check for continuity at various switch positions.
If the switch is faulty, replace it with a new one and reassemble.

5. Inspect and Replace Wiper Relay

Locate the wiper relay in the fuse box.
Remove the relay and test its functionality by swapping it with a known good relay of the same type.
Replace with a new relay if it is defective.