Code
B1528
ALFA ROMEO
B — Body
Memory enable switch circuit open
Views:
UK: 6
EN: 10
RU: 8
AI status
Completed
Completed
100%
Causes
- Broken or disconnected wiring in the memory enable switch circuit
- Corroded or loose connector at switch or control module
- Faulty memory enable switch (mechanical/electrical failure)
- Blown / open fuse or power supply issue to the switch or module
- Failed body/seat control module or internal input circuit open
- Aftermarket accessories or previous repairs that damaged wiring
Symptoms
- Memory seat/mirror buttons do not enable or store positions
- Memory recall does not operate or is intermittent
- No response from memory-related controls
- DTC lamp or stored fault in body/seat module
- Possible related functionality loss (seat adjustment memory features)
What to check
- Confirm exact function affected by the code (seat, mirror, etc.)
- Scan for additional body/seat module faults
- Visually inspect switch, nearby wiring, and connectors for damage or corrosion
- Check relevant fuses and vehicle battery voltage
- Perform wiggle test on harness while observing scan tool or function
- Measure voltage and continuity at switch and module connector
Signal parameters
- Expected supply voltage to switch: approximately 9–15 V with key on (verify with wiring diagram)
- Switch output: either ground control or switched +12 V depending on model — should change state when pressed
- Open-circuit condition: infinite resistance between switch signal pin and module signal pin when switch is actuated
- Typical continuity: near 0 Ω through switch contacts when closed (multimeter), high/OL when open
- Module input idle state: see wiring diagram for pull-up/pull-down specifics before measuring
Diagnostic algorithm
- Use a compatible diagnostic scanner to confirm B1528 and note any additional codes or freeze frame data.
- Obtain the vehicle wiring diagram for the memory enable switch circuit and identify connector pinouts, fuses, and module location.
- Visually inspect the switch assembly, connectors, and associated harness for damage, corrosion, water ingress, or loose pins.
- Verify power and ground: check fuse(s) feeding the switch and ensure battery voltage present at the switch power terminal with ignition on.
- With ignition on, backprobe the switch signal wire and observe voltage while operating the switch. Compare to expected behavior from wiring diagram (signal should change state when pressed).
- Check continuity between the switch signal pin and the control module signal pin. If open, isolate by testing intermediate connectors/sections of harness.
- If wiring and connectors show good continuity and correct voltages, bench-test or replace the memory enable switch and retest.
- If the switch replacement does not correct the fault and wiring is good, suspect the control module input. Perform module input checks per manufacturer procedures; replace module only after confirming module fault.
- After repairs, clear the code and perform functional test of memory features. Re-scan to confirm the code does not return.
Likely causes
- Open/harshly bent wire or pinched harness to the memory switch
- Connector pins pushed out or corroded causing loss of continuity
- Switch contacts worn or stuck open
- Blown fuse supplying the switch/module
- Module input driver damaged (less common)
Fault status
Status
Stored when the control module detects an open circuit (no signal) on the memory enable switch input.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
B1528
FIAT
B — Body
Memory enable switch circuit open
Views:
UK: 6
EN: 8
RU: 9
AI status
Completed
Completed
100%
Causes
- Broken or disconnected wiring in the memory enable switch circuit
- Corroded or loose connector at switch or control module
- Faulty memory enable switch (mechanical/electrical failure)
- Blown / open fuse or power supply issue to the switch or module
- Failed body/seat control module or internal input circuit open
- Aftermarket accessories or previous repairs that damaged wiring
Symptoms
- Memory seat/mirror buttons do not enable or store positions
- Memory recall does not operate or is intermittent
- No response from memory-related controls
- DTC lamp or stored fault in body/seat module
- Possible related functionality loss (seat adjustment memory features)
What to check
- Confirm exact function affected by the code (seat, mirror, etc.)
- Scan for additional body/seat module faults
- Visually inspect switch, nearby wiring, and connectors for damage or corrosion
- Check relevant fuses and vehicle battery voltage
- Perform wiggle test on harness while observing scan tool or function
- Measure voltage and continuity at switch and module connector
Signal parameters
- Expected supply voltage to switch: approximately 9–15 V with key on (verify with wiring diagram)
- Switch output: either ground control or switched +12 V depending on model — should change state when pressed
- Open-circuit condition: infinite resistance between switch signal pin and module signal pin when switch is actuated
- Typical continuity: near 0 Ω through switch contacts when closed (multimeter), high/OL when open
- Module input idle state: see wiring diagram for pull-up/pull-down specifics before measuring
Diagnostic algorithm
- Use a compatible diagnostic scanner to confirm B1528 and note any additional codes or freeze frame data.
- Obtain the vehicle wiring diagram for the memory enable switch circuit and identify connector pinouts, fuses, and module location.
- Visually inspect the switch assembly, connectors, and associated harness for damage, corrosion, water ingress, or loose pins.
- Verify power and ground: check fuse(s) feeding the switch and ensure battery voltage present at the switch power terminal with ignition on.
- With ignition on, backprobe the switch signal wire and observe voltage while operating the switch. Compare to expected behavior from wiring diagram (signal should change state when pressed).
- Check continuity between the switch signal pin and the control module signal pin. If open, isolate by testing intermediate connectors/sections of harness.
- If wiring and connectors show good continuity and correct voltages, bench-test or replace the memory enable switch and retest.
- If the switch replacement does not correct the fault and wiring is good, suspect the control module input. Perform module input checks per manufacturer procedures; replace module only after confirming module fault.
- After repairs, clear the code and perform functional test of memory features. Re-scan to confirm the code does not return.
Likely causes
- Open/harshly bent wire or pinched harness to the memory switch
- Connector pins pushed out or corroded causing loss of continuity
- Switch contacts worn or stuck open
- Blown fuse supplying the switch/module
- Module input driver damaged (less common)
Fault status
Status
Stored when the control module detects an open circuit (no signal) on the memory enable switch input.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
B1528
MITSUBISHI
B — Body
DR.buckle SW SHT.to GND for COM
Views:
UK: 8
EN: 13
RU: 13
AI status
Completed
Completed
100%
Causes
- Broken or disconnected wiring in the memory enable switch circuit
- Corroded or loose connector at switch or control module
- Faulty memory enable switch (mechanical/electrical failure)
- Blown / open fuse or power supply issue to the switch or module
- Failed body/seat control module or internal input circuit open
- Aftermarket accessories or previous repairs that damaged wiring
Symptoms
- Memory seat/mirror buttons do not enable or store positions
- Memory recall does not operate or is intermittent
- No response from memory-related controls
- DTC lamp or stored fault in body/seat module
- Possible related functionality loss (seat adjustment memory features)
What to check
- Confirm exact function affected by the code (seat, mirror, etc.)
- Scan for additional body/seat module faults
- Visually inspect switch, nearby wiring, and connectors for damage or corrosion
- Check relevant fuses and vehicle battery voltage
- Perform wiggle test on harness while observing scan tool or function
- Measure voltage and continuity at switch and module connector
Signal parameters
- Expected supply voltage to switch: approximately 9–15 V with key on (verify with wiring diagram)
- Switch output: either ground control or switched +12 V depending on model — should change state when pressed
- Open-circuit condition: infinite resistance between switch signal pin and module signal pin when switch is actuated
- Typical continuity: near 0 Ω through switch contacts when closed (multimeter), high/OL when open
- Module input idle state: see wiring diagram for pull-up/pull-down specifics before measuring
Diagnostic algorithm
- Use a compatible diagnostic scanner to confirm B1528 and note any additional codes or freeze frame data.
- Obtain the vehicle wiring diagram for the memory enable switch circuit and identify connector pinouts, fuses, and module location.
- Visually inspect the switch assembly, connectors, and associated harness for damage, corrosion, water ingress, or loose pins.
- Verify power and ground: check fuse(s) feeding the switch and ensure battery voltage present at the switch power terminal with ignition on.
- With ignition on, backprobe the switch signal wire and observe voltage while operating the switch. Compare to expected behavior from wiring diagram (signal should change state when pressed).
- Check continuity between the switch signal pin and the control module signal pin. If open, isolate by testing intermediate connectors/sections of harness.
- If wiring and connectors show good continuity and correct voltages, bench-test or replace the memory enable switch and retest.
- If the switch replacement does not correct the fault and wiring is good, suspect the control module input. Perform module input checks per manufacturer procedures; replace module only after confirming module fault.
- After repairs, clear the code and perform functional test of memory features. Re-scan to confirm the code does not return.
Likely causes
- Open/harshly bent wire or pinched harness to the memory switch
- Connector pins pushed out or corroded causing loss of continuity
- Switch contacts worn or stuck open
- Blown fuse supplying the switch/module
- Module input driver damaged (less common)
Fault status
Status
Stored when the control module detects an open circuit (no signal) on the memory enable switch input.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
B1528
Other
B — Body
Memory Set Switch Circuit Open
Views:
UK: 20
EN: 34
RU: 31
AI status
Completed
Completed
100%
Causes
- Broken or disconnected wiring in the memory enable switch circuit
- Corroded or loose connector at switch or control module
- Faulty memory enable switch (mechanical/electrical failure)
- Blown / open fuse or power supply issue to the switch or module
- Failed body/seat control module or internal input circuit open
- Aftermarket accessories or previous repairs that damaged wiring
Symptoms
- Memory seat/mirror buttons do not enable or store positions
- Memory recall does not operate or is intermittent
- No response from memory-related controls
- DTC lamp or stored fault in body/seat module
- Possible related functionality loss (seat adjustment memory features)
What to check
- Confirm exact function affected by the code (seat, mirror, etc.)
- Scan for additional body/seat module faults
- Visually inspect switch, nearby wiring, and connectors for damage or corrosion
- Check relevant fuses and vehicle battery voltage
- Perform wiggle test on harness while observing scan tool or function
- Measure voltage and continuity at switch and module connector
Signal parameters
- Expected supply voltage to switch: approximately 9–15 V with key on (verify with wiring diagram)
- Switch output: either ground control or switched +12 V depending on model — should change state when pressed
- Open-circuit condition: infinite resistance between switch signal pin and module signal pin when switch is actuated
- Typical continuity: near 0 Ω through switch contacts when closed (multimeter), high/OL when open
- Module input idle state: see wiring diagram for pull-up/pull-down specifics before measuring
Diagnostic algorithm
- Use a compatible diagnostic scanner to confirm B1528 and note any additional codes or freeze frame data.
- Obtain the vehicle wiring diagram for the memory enable switch circuit and identify connector pinouts, fuses, and module location.
- Visually inspect the switch assembly, connectors, and associated harness for damage, corrosion, water ingress, or loose pins.
- Verify power and ground: check fuse(s) feeding the switch and ensure battery voltage present at the switch power terminal with ignition on.
- With ignition on, backprobe the switch signal wire and observe voltage while operating the switch. Compare to expected behavior from wiring diagram (signal should change state when pressed).
- Check continuity between the switch signal pin and the control module signal pin. If open, isolate by testing intermediate connectors/sections of harness.
- If wiring and connectors show good continuity and correct voltages, bench-test or replace the memory enable switch and retest.
- If the switch replacement does not correct the fault and wiring is good, suspect the control module input. Perform module input checks per manufacturer procedures; replace module only after confirming module fault.
- After repairs, clear the code and perform functional test of memory features. Re-scan to confirm the code does not return.
Likely causes
- Open/harshly bent wire or pinched harness to the memory switch
- Connector pins pushed out or corroded causing loss of continuity
- Switch contacts worn or stuck open
- Blown fuse supplying the switch/module
- Module input driver damaged (less common)
Fault status
Status
Stored when the control module detects an open circuit (no signal) on the memory enable switch input.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Workshop Manuals
Available brands with manuals
2
AUDI 11
6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)
Workshop Manual199,00 UAH
Audi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop Manual199,00 UAH
AUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop Manual199,00 UAH
Audi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
Workshop Manual199,00 UAH
Audi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop Manual199,00 UAH
Audi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop Manual199,00 UAH
Audi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop Manual199,00 UAH
Audi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop Manual199,00 UAH
LAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
