B1537

Code

Other B — Body

Memory 2 Switch Circuit Short To Battery

Brand: Other

Type: B — Body

Views: UK: 41 EN: 50 RU: 37

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Page language: EN

Causes

Damaged or chafed wiring contacting a constant 12V source
Corroded or damaged connector pins causing a short to battery
Faulty Memory 2 switch with internal short
Incorrect or damaged aftermarket wiring tied into the circuit
Faulty body control module (BCM) or related control module input

Symptoms

Memory 2 switch not functioning or responding
Inability to recall or store the 'Memory 2' position
Related warning or malfunction indicator lamp (body/BCM) may illuminate
Possible parasitic battery drain if short is permanent
Intermittent operation or erratic behavior of memory functions

What to check

Obtain full trouble code report and any freeze-frame or instance data
Visually inspect switch, connector and wiring for damage, corrosion, pin push-out
Check for aftermarket devices or splices near the memory switch circuit
Measure voltage at the memory switch connector with ignition OFF and ON
Disconnect the memory 2 switch and see if the code clears or behavior changes
Check PCM/BCM connector voltage and compare to switch side to isolate harness vs module

Signal parameters

Expected: signal circuit should be open/low (
When legitimately actuated, signal may go to battery voltage (~11–14.5 V) or switch to ground depending on vehicle design
Fault condition: circuit reads battery voltage with switch un-actuated or ignition off
Switch closed resistance: typically very low (10 kΩ) — consult vehicle wiring diagram for exact values

Diagnostic algorithm

Record and save current DTCs and any freeze-frame data; note operating conditions when code set.
Clear the code and attempt to reproduce. If the code returns, proceed.
Obtain wiring diagram for Memory 2 switch circuit and identify connector locations, power feeds and module pin assignments.
Perform a visual inspection of the switch, harness routing, and connectors from the switch to the module. Look for chafing, pin corrosion, melted insulation, or aftermarket splices.
With ignition off, disconnect the Memory 2 switch connector and measure voltage at the harness pin for the signal. If battery voltage is present with the switch unplugged, the short is in the harness or module area.
If voltage is only present when the switch is connected, suspect the switch — bench-test or substitute a known-good switch if available.
Perform a continuity/resistance check between the suspect signal wire and battery positive to confirm a direct short. Also check continuity to ground to rule out shorts to ground.
Wiggle test harness and connectors while monitoring voltage or resistance to find intermittent shorts.
If harness and switch check OK, scan and monitor the BCM/module inputs. Inspect module connector for pin damage and check for blown fuses or power distribution problems. Consider replacing BCM only after isolating the fault to the module.
Repair or replace damaged wiring, connectors, or switch. After repairs, clear codes and verify the fault does not return and that the memory function operates normally.