B2243

Code

HUMMER B — Body

Memory Set Switch Failed

Brand: HUMMER

Type: B — Body

Views: UK: 6 EN: 10 RU: 13

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Failed or intermittent Memory Set switch (mechanical/electrical)
Open, short, or high-resistance wiring in the switch circuit
Poor/loose connector or corroded terminals at the switch or BCM
Missing power or ground to the switch or BCM
Faulty Body Control Module (BCM) or related module
Software anomaly or calibration issue

Symptoms

Memory set buttons do not respond or cannot store positions
Driver memory recall fails or does not move components
Instrument cluster or infotainment may show a related message
Intermittent operation of memory functions
DTC B2243 logged in vehicle diagnostic system

What to check

Scan vehicle with a capable diagnostic tool; read freeze frame and related DTCs
Check for other body or memory-related codes (e.g., seat, mirror, BCM codes)
Verify fuse(s) and power feed to memory switch circuits
Inspect switch and connector for corrosion, damage, or water intrusion
Wiggle switch and wiring while monitoring for intermittent faults
Verify proper chassis and module grounds

Signal parameters

Memory Set switch is typically an input to the Body Control Module (BCM); operation is reported as a digital on/off input or CAN message
Expected inactive/idle: circuit at supply potential (near battery voltage or module Vref) or logic high depending on design
Expected active: switch closure changes input to logic low (near 0 V) or sends a CAN button-press event
If CAN-based, no direct voltage change at BCM pin—verify CAN message payload when pressing switch
Look for clean, stable voltages with key on; no excessive resistance or voltage drop in circuit

Diagnostic algorithm

Connect a diagnostic scan tool. Record B2243 and any related DTCs, note freeze-frame data and stored events.
Verify basic power and ground: check relevant fuses and backprobe switch connector for key-on voltage and ground reference.
Visually inspect switch, housing, and connector for damage, water, or corrosion; repair or replace damaged connector/shell as needed.
With connector disconnected, test switch continuity/resistance while actuating. Compare to expected (open/closed) behavior; replace switch if out of spec or intermittent.
Backprobe the switch circuit with the connector connected. Operate the switch while monitoring voltage/signal at the switch and at the BCM input (if accessible). Confirm signal changes and no intermittent drops.
If vehicle uses CAN for switch reporting, monitor CAN data for button press events while operating the switch. If no event is seen, trace wiring to BCM or test a known-good switch.
Perform a wiggle test along the harness to identify intermittent breaks. Repair any broken wires, chaffing, or poor crimps; re-secure harness routing.
If wiring and switch verify OK, consult service information for BCM input tests. If BCM input circuit is suspect, inspect module connectors and grounds; consider module replacement only after wiring and switch are confirmed good.
Clear codes and retest operation. Verify the memory function works and B2243 does not return.

Likely causes

Defective Memory Set switch
Corroded/loose connector at the switch
Broken or chafed wiring between switch and BCM
Blown fuse or missing key-on power feed to circuit
Intermittent ground at chassis or module
BCM input circuit fault or module failure

Fault status

⚠️ Status

Memory Set Switch input fault detected. The vehicle cannot reliably detect Memory Set switch operation.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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Code

B2243

Other B — Body

Driver Rear Door Ajar Circuit Open

Brand: Other

Type: B — Body

Views: UK: 19 EN: 24 RU: 26

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Failed or intermittent Memory Set switch (mechanical/electrical)
Open, short, or high-resistance wiring in the switch circuit
Poor/loose connector or corroded terminals at the switch or BCM
Missing power or ground to the switch or BCM
Faulty Body Control Module (BCM) or related module
Software anomaly or calibration issue

Symptoms

Memory set buttons do not respond or cannot store positions
Driver memory recall fails or does not move components
Instrument cluster or infotainment may show a related message
Intermittent operation of memory functions
DTC B2243 logged in vehicle diagnostic system

What to check

Scan vehicle with a capable diagnostic tool; read freeze frame and related DTCs
Check for other body or memory-related codes (e.g., seat, mirror, BCM codes)
Verify fuse(s) and power feed to memory switch circuits
Inspect switch and connector for corrosion, damage, or water intrusion
Wiggle switch and wiring while monitoring for intermittent faults
Verify proper chassis and module grounds

Signal parameters

Memory Set switch is typically an input to the Body Control Module (BCM); operation is reported as a digital on/off input or CAN message
Expected inactive/idle: circuit at supply potential (near battery voltage or module Vref) or logic high depending on design
Expected active: switch closure changes input to logic low (near 0 V) or sends a CAN button-press event
If CAN-based, no direct voltage change at BCM pin—verify CAN message payload when pressing switch
Look for clean, stable voltages with key on; no excessive resistance or voltage drop in circuit

Diagnostic algorithm

Connect a diagnostic scan tool. Record B2243 and any related DTCs, note freeze-frame data and stored events.
Verify basic power and ground: check relevant fuses and backprobe switch connector for key-on voltage and ground reference.
Visually inspect switch, housing, and connector for damage, water, or corrosion; repair or replace damaged connector/shell as needed.
With connector disconnected, test switch continuity/resistance while actuating. Compare to expected (open/closed) behavior; replace switch if out of spec or intermittent.
Backprobe the switch circuit with the connector connected. Operate the switch while monitoring voltage/signal at the switch and at the BCM input (if accessible). Confirm signal changes and no intermittent drops.
If vehicle uses CAN for switch reporting, monitor CAN data for button press events while operating the switch. If no event is seen, trace wiring to BCM or test a known-good switch.
Perform a wiggle test along the harness to identify intermittent breaks. Repair any broken wires, chaffing, or poor crimps; re-secure harness routing.
If wiring and switch verify OK, consult service information for BCM input tests. If BCM input circuit is suspect, inspect module connectors and grounds; consider module replacement only after wiring and switch are confirmed good.
Clear codes and retest operation. Verify the memory function works and B2243 does not return.

Likely causes

Defective Memory Set switch
Corroded/loose connector at the switch
Broken or chafed wiring between switch and BCM
Blown fuse or missing key-on power feed to circuit
Intermittent ground at chassis or module
BCM input circuit fault or module failure

Fault status

⚠️ Status

Memory Set Switch input fault detected. The vehicle cannot reliably detect Memory Set switch operation.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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