B1536 – Memory 2 Switch Circuit Open

The ODBII code B1536 indicates that there is an open circuit in the memory 2 switch circuit, which typically relates to a malfunction in the vehicle’s memory seat or related control system.

The severity of ODBII code B1536 is generally considered moderate.

Common Causes For: B1535 Memory 2 Switch Circuit Failure

• Faulty memory switch
• Open circuit in wiring
• Poor connection or corroded terminals
• Faulty body control module (BCM)
• Damaged or frayed wiring harness
• Malfunctioning power window switch
• Issues with the vehicle’s electrical system

Common misdiagnosis for B1536 Memory 2 Switch Circuit Open

• Faulty body control module (BCM)
• Defective window switch
• Wiring harness issues
• Short circuit in the switch circuit
• Faulty door lock actuator
• Malfunctioning power window motor
• Incorrectly installed or damaged connectors
• Battery or charging system problems

Common Troubleshooting Steps

The OBD-II code B1536 indicates a problem with the “Memory 2 Switch Circuit,” specifically that there is an open circuit. This code is often related to the vehicle’s power seat memory function, which allows the driver to save and recall seat positions. Here are some common troubleshooting steps to diagnose and resolve the issue:

• Check for Additional Codes: Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are multiple issues.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors associated with the memory switch circuit for any signs of damage, corrosion, or loose connections.
• **Continuity Test: Use a multimeter to test for continuity in the wiring. An open circuit may indicate a broken wire or poor connection.
• Test the Memory Switch: If the vehicle has a memory switch (often found in power seats), test the switch itself for proper operation. This can be done by checking for continuity when the switch is activated.
• If the switch is faulty, it may need to be replaced.
• Check the Power Seat Module: The power seat module (or control module) may be malfunctioning. Inspect the module for any signs of damage or failure.
• If possible, perform a reset or reprogram the module according to the manufacturer’s specifications.
• Inspect Ground Connections: Ensure that all ground connections related to the memory switch circuit are secure and free of corrosion. A poor ground can lead to circuit issues.
• Check for Short Circuits: Inspect the circuit for any potential short circuits that could be causing the open circuit condition. This includes checking for pinched wires or damaged insulation.
• Consult Wiring Diagrams: Refer to the vehicle’s service manual for wiring diagrams to understand the circuit layout and identify any components that may be involved in the memory switch circuit.
• Perform a System Reset: In some cases, resetting the vehicle’s computer system can clear temporary faults. Disconnect the battery for a few minutes, then reconnect it and see if the code returns.
• Seek Professional Help: If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has access to specialized diagnostic tools and equipment.Conclusion By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1536 code. Always refer to the specific service manual for your vehicle for detailed procedures and specifications.