AutoCodes – Generic – B3702

B3702 Code - Intermittent Wiper Delay Input Circuit Low

Quick Answer

The intermittent switch in the windshield wiper washer switch is a voltage divider connected across the Body Control Module (BCM) inputs circuits windshield wiper switch signal circuit and windshield wiper switch low reference circuit. Common causes include Faulty Windshield Wiper Washer Switch, Windshield Wiper Washer Switch harness is open or shorted, Windshield Wiper Washer Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B3702 indicates Intermittent Wiper Delay Input Circuit Low.
Common causes: Common causes include Faulty Windshield Wiper Washer Switch, Windshield Wiper Washer Switch harness is open or shorted, Windshield Wiper Washer Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 713

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3702 Description

The intermittent switch in the windshield wiper washer switch is a voltage divider connected across the Body Control Module (BCM) inputs circuits windshield wiper switch signal circuit and windshield wiper switch low reference circuit. The front wiper relay is energized by the BCM switching the front wiper relay control circuit to ground. The Diagnostic Trouble Code (DTC) sets when the windshield wiper switch signal circuit is shorted to ground or less than 0.20 volt.

OBDII Code B3702 - Intermittent Wiper Delay Input Circuit Low - AutoCodes.com — B3702 Code - Intermittent Wiper Delay Input Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3702?

Faulty Windshield Wiper Washer Switch
Windshield Wiper Washer Switch harness is open or shorted
Windshield Wiper Washer Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3702?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3702 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B3702 code?

Need more information on how to fix the B3702 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3702 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3702 Buick — Intermittent Wiper Delay Input Circuit Low
B3702 Cadillac — Intermittent Wiper Delay Input Circuit Low
B3702 Chevrolet — Intermittent Wiper Delay Input Circuit Low
B3702 GMC — Intermittent Wiper Delay Input Circuit Low
B3702 Saturn — Intermittent Wiper Delay Input Circuit Low

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B3702 Code

1. What are the common symptoms of OBDII code B3702 (Intermittent Wiper Delay Input Circuit Low)?

- Common symptoms include erratic operation of the intermittent wipers, wipers not working at all, or the wipers operating at an incorrect speed.

2. What are the possible causes of OBDII code B3702?

- Possible causes may include a faulty wiper switch, damaged wiring or connectors in the wiper circuit, or a malfunctioning wiper control module.

3. How can I diagnose the cause of OBDII code B3702?

- Diagnosis typically involves inspecting the wiper switch, checking the wiring and connectors for damage, and testing the wiper control module with a multimeter.

4. Can a blown fuse cause OBDII code B3702 to appear?

- Yes, a blown fuse in the wiper circuit can potentially trigger code B3702, so it's important to check the fuses as part of the diagnostic process.

5. Is it safe to continue driving with OBDII code B3702 present?

- It is generally safe to drive with this code, but it's recommended to address the issue promptly to ensure proper wiper functionality, especially in inclement weather.

6. Are there any simple repairs I can try to fix OBDII code B3702 myself?

- You can try checking and replacing any blown fuses, cleaning the wiper switch contacts, or repairing any damaged wiring or connectors in the wiper circuit.

7. Do I need specialized tools to repair OBDII code B3702?

- Basic tools like a multimeter, wire strippers, and electrical tape are usually sufficient for diagnosing and repairing the causes of code B3702.

8. Will resetting the OBDII system clear code B3702?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear after driving the vehicle.

9. Can extreme weather conditions affect OBDII code B3702?

- Yes, extreme weather conditions like heavy rain or snow can exacerbate issues related to the wiper circuit and potentially trigger code B3702.

10. Should I seek professional help for repairing OBDII code B3702?

- If you are unsure about diagnosing or repairing the issue yourself, or if the problem persists after attempting DIY fixes, it's advisable to seek help from a professional mechanic or auto technician.