OBD-II DTC B1435 – Wiper Hi/Low Speed Relay Coil Circuit Open
DTC B1435 meaning
DTC B1435 refers to a diagnostic trouble code indicating an issue with the wiper hi/low speed relay coil circuit. Specifically, it signifies that there is an open circuit in the relay coil, which prevents the windshield wipers from functioning at their designated speeds. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components for faults.
DTC B1435 symptoms
When DTC B1435 is triggered, the following symptoms may be observed:
- Windshield wipers may not operate at high or low speeds.
- Wipers may be completely inoperative.
- Intermittent wiper function may be affected.
- Dashboard warning lights may illuminate.
DTC B1435 causes
Several factors can lead to the occurrence of DTC B1435, including:
- Faulty wiper relay.
- Open or damaged wiring in the relay coil circuit.
- Corroded or loose electrical connections.
- Defective wiper switch.
- Issues with the vehicle’s body control module (BCM).
DTC B1435 seriousness
DTC B1435 is considered a moderate issue. While it may not pose an immediate safety risk, it can significantly impair visibility during inclement weather, increasing the risk of accidents. It is advisable to address this code promptly to ensure proper wiper functionality.
How to diagnose DTC B1435
To diagnose DTC B1435, follow these steps:
- Use an OBD-II scanner to confirm the presence of the code.
- Inspect the wiper relay for any visible damage or corrosion.
- Check the wiring and connectors in the relay coil circuit for continuity and signs of wear.
- Test the wiper switch for proper operation.
- Examine the body control module for any faults or issues.
How to fix DTC B1435 step-by-step instructions
To fix DTC B1435, follow these step-by-step instructions:
- Disconnect the vehicle’s battery to ensure safety.
- Locate the wiper relay and inspect it for damage replace if necessary.
- Examine the wiring and connectors in the relay coil circuit
Recommended tools for OBD-II diagnostics
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