B1529 – Memory Set Switch Circuit Short To Battery

The ODBII code B1529 indicates a fault in the memory set switch circuit, specifically that it is shorted to battery, which means there is an electrical short causing the circuit to receive constant power.

The severity of ODBII code B1529 is moderate.

Common Causes For: B1528 Memory Set Switch Circuit Open

• Shorted wiring or connectors
• Faulty memory set switch
• Corroded or damaged terminals
• Malfunctioning body control module (BCM)
• Grounding issues
• Incorrectly installed aftermarket accessories
• Water intrusion or moisture damage

Common misdiagnosis for B1529 Memory Set Switch Circuit Short To Battery

• Faulty memory seat switch
• Wiring harness issues
• Shorted wiring
• Faulty body control module (BCM)
• Defective power seat motor
• Ground connection problems
• Incorrectly installed aftermarket accessories

Common Troubleshooting Steps

The OBD-II code B1529 indicates a problem with the memory set switch circuit, specifically a short to battery. This code is often associated with vehicles that have memory seat functions. Here are some common troubleshooting steps to diagnose and resolve the issue:

• Visual Inspection: **Wiring and Connectors: Inspect the wiring harness and connectors related to the memory set switch. Look for any signs of damage, fraying, or corrosion.
• **Switch Condition: Check the memory set switch itself for any physical damage or signs of wear.
• Check for Short Circuits: **Multimeter Testing: Use a multimeter to check for continuity in the memory set switch circuit. Disconnect the switch and measure resistance between the circuit wires. A low resistance reading may indicate a short to battery.
• **Inspect Ground Connections: Ensure that all ground connections are secure and free of corrosion.
• Scan Tool Diagnosis: **Read Codes: Use an OBD-II scanner to confirm the presence of the B1529 code and check for any additional codes that may provide more context.
• **Live Data Monitoring: Monitor the live data related to the memory set switch to see if it behaves as expected when the switch is activated.
• Check Power Supply: **Voltage Check: With the ignition on, check the voltage at the memory set switch connector. Ensure it is receiving the correct voltage as specified in the vehicle’s service manual.
• **Battery Voltage: Ensure the vehicle’s battery is in good condition and fully charged.
• Inspect Related Components: **Memory Module: If applicable, check the memory module or control unit that manages the memory seat functions for faults.
• **Other Switches: If the memory set switch is part of a larger control system (like a driver’s door module), inspect other related switches and components.
• Repair or Replace: **Repair Wiring: If any damaged wiring or connectors are found, repair or replace them as necessary.
• **Replace Switch: If the memory set switch is faulty, replace it with a new one.
• Clear Codes and Test Drive: After making repairs, clear the trouble codes using the OBD-II scanner.
• Take the vehicle for a test drive to see if the code returns.
• Consult Service Manual: If the issue persists, consult the vehicle’s service manual for specific diagnostic procedures and wiring diagrams related to the memory set switch circuit.
• Professional Help: If you are unable to resolve the issue, consider seeking help from a professional mechanic or an automotive electrician who has experience with electrical systems. By following these steps, you should be able to diagnose and potentially resolve the B1529 code related to the memory set switch circuit.