The B1434 code indicates a problem with the Wiper Hi/Low Speed Relay Coil monitored by the Body Control Module (BCM). This deviation from factory specifications can cause issues with the wiper system in a vehicle.
Common symptoms include erratic wiper operation, wipers not working at all, or the wipers getting stuck in one position.
The code can be triggered by various causes, such as a faulty relay coil, a malfunctioning BCM, or wiring issues.
To fix the issue, it is recommended to perform a thorough inspection of the wiper system, checking for any damaged or loose wiring connections. If any faults are found, they should be repaired or replaced accordingly.
In some cases, resetting the BCM or replacing the faulty relay coil may be necessary.
It is advisable to consult a professional mechanic or refer to the vehicle's repair manual for specific troubleshooting steps and appropriate solutions.
What does it mean
The B1434 code indicates a problem with the Wiper Hi/Low Speed Relay Coil, affecting wiper functionality. It can cause incorrect wiper speed or complete failure, posing a safety risk in bad weather.
This code isn't specific to a particular vehicle and requires diagnostic procedures to determine the underlying cause and fix the issue.
what are the symptoms
The symptoms of the B1434 code are the Engine Light or Service Engine Soon Warning Light turning on. This means there is a problem with the Wiper Hi/Low Speed Relay Coil, which is checked by the Body Control Module (BCM).
When the Wiper Hi/Low Speed Relay Coil doesn't work properly, the code is triggered. This can affect the wiper system's functionality, causing it to not work or malfunction. The wiper blades may not move or operate at the desired speed, resulting in reduced visibility during bad weather.
Safety-wise, the B1434 code can be risky as it impairs the driver's visibility, increasing the chances of accidents. It's important to address this issue promptly to ensure the vehicle operates safely.
What are the causes
To find out what is causing the B1434 code, you should consider a few things:
- Faulty Wiper Hi/Low Speed Relay Coil: This part may not be working properly, which could be triggering the code.
- Wiper Hi/Low Speed Relay Coil harness issues: The wiring harness for the relay coil could be open, shorted, or have bad electrical connections.
To fix the B1434 code, you can try these solutions:
- Look closely at the wiring harness and connectors to see if there is any damage.
- Check if any of the connector pins are broken, bent, pushed out, or corroded.
- Test the Wiper Hi/Low Speed Relay Coil to make sure it is functioning correctly.
- If needed, replace the faulty Wiper Hi/Low Speed Relay Coil or repair any wiring problems.
Here are some troubleshooting tips for diagnosing the Wiper Hi/Low Speed Relay Coil issue:
- Use a multimeter to check the resistance and continuity of the relay coil.
- Verify that the relay coil is getting the right power supply by checking its voltage.
- Refer to the vehicle's service manual for specific diagnostic procedures and values.
What Tools are Needed to diagnose
To diagnose the B1434 code, you will need specific diagnostic tools. Here are the common tools used for diagnosing the B1434 code:
- OBD-II scanner: This tool retrieves the trouble code from the vehicle's computer system and provides information about the issue.
- Multimeter: This tool helps perform electrical tests on the wiper hi/low speed relay coil circuit. It checks for continuity, resistance, and voltage levels.
To reset the BCM for the B1434 code, follow these steps:
- Disconnect the negative battery terminal to reset the BCM.
- Wait for about 15 minutes before reconnecting the battery.
- Reconnect the battery and start the vehicle.
- Use the OBD-II scanner to clear the B1434 code.
- Test the wiper hi/low speed relay coil to ensure it is functioning properly.
How to fix Step by Step
Step 1: Test the Wiper Hi/Low Speed Relay Coil by using a multimeter to measure the resistance across the coil terminals.
Step 2: Check if the resistance measurement is within the factory specifications. If it is not, the relay coil should be replaced.
Step 3: Inspect the harness for any signs of being open or shorted. Ensure that there are no poor electrical connections.
Step 4: If any issues are found with the harness or electrical connections, repair or replace the affected components.
Step 5: Once the necessary repairs have been made, reset the B1434 code. This can be done using a diagnostic scanner or by disconnecting the battery for a few minutes.
Step 6: Finally, take the vehicle for a test drive to confirm that the B1434 code does not reappear.
What are the Common Diagnosis Mistakes
Common diagnosis mistakes related to the B1434 code can occur when technicians do not properly inspect the wiring harness and connectors for any damage or poor electrical connections. To prevent the B1434 code from happening again, it is important to follow these steps:
- Look closely at the wiring harness and connectors to check for any signs of damage or corrosion.
- Make sure that the connector pins are not broken, bent, pushed out, or corroded.
- Check that the Wiper Hi/Low Speed Relay Coil harness is not open or shorted.
- Verify that there are no poor electrical connections in the Wiper Hi/Low Speed Relay Coil circuit.
- Test the Wiper Hi/Low Speed Relay Coil and the Body Control Module (BCM) for any faults.
What is the Repair Cost
The repair cost for the B1434 code varies based on factors like location, vehicle make and model, and engine type. Labor costs typically range from 1.0 hour or more, with rates between $75 and $150 per hour.
Diagnosis involves checking wiring harnesses, connectors, and the Wiper Hi/Low Speed Relay Coil for damage or corrosion.
Can I drive safely with this code?
Driving with the B1434 code present is not recommended. This code indicates a fault in the Wiper Hi/Low Speed Relay Coil, which can affect the wiper system's functionality. Ignoring the code may compromise visibility during inclement weather.
It is important to have the issue repaired by a qualified technician before driving to ensure safety.
Conclusion
In conclusion, the B1434 code indicates a problem with the Wiper Hi/Low Speed Relay Coil in the Body Control Module (BCM). This code can be caused by various factors such as a faulty relay coil, open or shorted harness, poor electrical connection, or a malfunctioning BCM.
To diagnose and fix the issue, it is important to inspect the wiring harness, connectors, and components for any damage or corrosion. Understanding the B1434 code and its associated factors will help vehicle owners resolve the issue promptly and effectively.