B1424 – Power Window RR Motor Circuit Short To Battery

The ODBII code B1424 indicates a short circuit in the power window rear right motor circuit, meaning there is an unintended connection to the battery, which can cause the motor to malfunction.

The severity of ODBII code B1424 is moderate.

Common Causes For: B1423 Power Window RR Motor Circuit Open

• Shorted wiring or connectors
• Faulty power window motor
• Damaged window switch
• Grounding issues
• Corroded or damaged electrical connections
• Malfunctioning body control module (BCM)

Common misdiagnosis for B1424 Power Window RR Motor Circuit Short To Battery

• Faulty power window switch
• Damaged wiring harness
• Defective window motor
• Malfunctioning body control module (BCM)
• Short circuit in the door panel
• Issues with the fuse or relay
• Incorrectly installed aftermarket accessories

Common Troubleshooting Steps

When dealing with an OBD-II code B1424, which indicates a “Power Window RR Motor Circuit Short To Battery,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Visual Inspection: **Wiring and Connectors: Check the wiring harness and connectors related to the rear right power window motor for any signs of damage, fraying, or corrosion.
• **Ground Connections: Ensure that all ground connections are secure and free of corrosion.
• Check the Power Window Switch: **Functionality: Test the power window switch for proper operation. A faulty switch can cause incorrect signals to be sent to the motor.
• **Continuity Test: Use a multimeter to check for continuity in the switch when pressed.
• Inspect the Power Window Motor: **Motor Condition: Test the rear right power window motor for functionality. You can do this by applying direct battery voltage to the motor to see if it operates.
• **Resistance Check: Measure the resistance of the motor windings. If the resistance is too low (indicating a short), the motor may need to be replaced.
• Check for Short Circuits: **Wiring Inspection: Look for any signs of short circuits in the wiring leading to the rear right power window motor. This includes checking for pinched wires or wires that may be touching the vehicle chassis.
• **Use a Multimeter: Measure resistance between the power wire and ground to check for shorts.
• Inspect the Power Supply: **Voltage Check: Use a multimeter to check the voltage at the power window motor connector. Ensure that it is receiving the correct voltage when the switch is activated.
• **Fuses and Relays: Check the relevant fuses and relays in the power window circuit. Replace any blown fuses and test relays for proper operation.
• Scan for Additional Codes: **Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Clear the Code and Test Drive: **Reset the System: After performing the above checks and repairs, clear the trouble code using an OBD-II scanner.
• **Test Drive: Operate the power window to see if the issue persists and if the code returns.
• Consult Repair Manual: **Manufacturer Specifications: If the problem persists, consult the vehicle’s repair manual for specific diagnostic procedures and specifications related to the power window system.
• Professional Help: **Seek Assistance: If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or automotive technician. By following these steps, you should be able to identify the cause of the B1424 code and take appropriate action to fix the issue.