B1535 — Memory 2 switch circuit

Causes

• Broken or chafed wiring between Memory 2 switch and control module
• Poor or corroded connector at the switch or control module
• Failed Memory 2 switch (mechanical or internal electrical fault)
• Short to ground or battery in the switch wiring
• Faulty body/control module input circuit or internal module failure
• Water ingress or contamination at switch or connectors

Symptoms

• Memory position 2 does not store or recall seat/mirror/steering wheel position
• No response when pressing Memory 2 switch
• Intermittent operation of memory function (works sometimes)
• Related warning or message on dash (memory system fault)
• Other memory positions (Memory 1) may still function or may also be affected

What to check

• Read stored freeze frame and fault details with a scan tool; note whether fault is present or intermittent
• Visually inspect switch, connectors, and wiring harness for damage, corrosion, or loose pins
• Operate the Memory 2 switch while observing connector and wiring for movement/poor contact (wiggle test)
• Check related fuses and ground connections for continuity and correct installation
• Compare operation of Memory 2 switch to Memory 1 (if fitted) to narrow fault to the switch or wiring/module

Signal parameters

• Switch closed: near 0 ohms across switch contacts (continuity)
• Switch open: high resistance/open circuit (OL)
• Module input idle voltage: typically a pull-up to module reference (approx. 5–12 V depending on design) — voltage should change when the switch is actuated
• No excessive voltage drop on supply or ground when operating the switch

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