AutoCodes – Cadillac – B3702 Cadillac

B3702 Cadillac 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 Cadillac 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 457

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

What does this mean?

What are the Possible Causes of the DTC B3702 Cadillac?

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 Cadillac?

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 Cadillac 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.

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Need Help with the Code?

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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 Cadillac Code

1. What does the OBDII code B3702 mean on a Cadillac?

The code B3702 indicates an issue with the intermittent wiper delay input circuit, specifically that it is reading a low voltage or signal.

2. What are the common symptoms of code B3702 in a Cadillac?

Symptoms may include intermittent wipers not functioning, wipers stuck at one speed, or failure to adjust the wiper delay setting.

3. What causes the B3702 code to appear?

Common causes include a faulty wiper switch, damaged wiring or connectors in the wiper delay circuit, or a malfunctioning body control module (BCM).

4. Can I still drive my Cadillac with the B3702 code active?

Yes, you can usually drive safely with this code, but it may cause inconvenience during rain if the wipers donâ€™t function properly.

5. How do I diagnose the B3702 code on my Cadillac?

Start by inspecting the wiper switch, wiring, and connectors for damage or corrosion. Use a multimeter to check for continuity and proper voltage in the circuit.

6. What tools are needed to fix the B3702 code?

Basic tools like a multimeter, wiring diagram, and possibly an OBDII scanner for clearing the code after repair are typically required.

7. How much does it cost to fix the B3702 code on a Cadillac?

Repairs can range from $50 to $300 depending on whether you need to replace the wiper switch, repair wiring, or address issues with the BCM.

8. Can a faulty wiper motor cause the B3702 code?

While unlikely, a faulty wiper motor could indirectly affect the circuit, so itâ€™s worth testing if other components check out.

9. Will clearing the B3702 code solve the problem?

Clearing the code may temporarily remove it, but the underlying issue must be resolved to prevent it from returning.

10. When should I seek professional help for the B3702 code?

If youâ€™re unable to identify or repair the issue after inspecting the switch and wiring, itâ€™s best to consult a professional mechanic for further diagnosis.