Code
B1532
ALFA ROMEO
B — Body
Memory 1 switch circuit open
Views:
UK: 4
EN: 4
RU: 3
AI status
Completed
Completed
100%
Causes
- Faulty Memory 1 switch (mechanical/electrical failure)
- Open or broken wiring between switch and control module
- Poor or corroded connector at switch or control module
- Blown fuse or power supply interruption to switch circuit
- Faulty ground or grounding point
- Faulty BCM / control module input
Symptoms
- Memory 1 recall/store function does not operate
- No LED or indicator when Memory 1 button is pressed
- Unable to save or recall seat/mirror/steering positions for memory slot 1
- Fault stored in vehicle diagnostic memory (B1532)
- Intermittent operation of memory functions
What to check
- Read all stored codes and freeze frame data with a diagnostic scanner; clear and re-scan.
- Visually inspect Memory 1 switch, wiring harness, and connectors for damage, corrosion, or water ingress.
- Verify fuses and power supply feeding the switch circuit.
- Check connector pins for bent, pushed-out, or corroded terminals.
- Perform a wiggle test on the harness while operating the switch to look for intermittent faults.
- Measure continuity between the switch terminal and the BCM input pin; check for open circuit.
Signal parameters
- Signal type: low-voltage digital/switch input to the BCM
- Typical behavior: switch changes logic state when pressed (expected voltage change between supply and ground) — exact voltage depends on vehicle design
- Closed-switch continuity: near 0 ohms between switch terminals when actuated
- Open-switch: high resistance/OL (no continuity)
- Measured at switch connector and BCM pin to confirm circuit integrity
Diagnostic algorithm
- Verify the code: scan the vehicle and confirm B1532 is current or stored; check for related codes.
- Inspect switch and wiring: visually inspect the Memory 1 switch, harness, connectors, and nearby components for damage or contamination.
- Check power and fuse: verify the fuse and supply voltage to the switch circuit with ignition on.
- Test switch operation at the connector: backprobe the switch connector and observe voltage/continuity while operating the switch. If the switch does not change state, suspect the switch.
- Continuity to control module: with battery disconnected, measure continuity/resistance between the switch terminal and the BCM/input module pin. An open indicates wiring/connector fault.
- Repair wiring/connectors: repair any damaged wires, clean or replace corroded connectors, and secure pin connections.
- Replace switch if wiring and supply are good but switch does not change state or shows high resistance when actuated.
- If circuit and switch test good, test or reflash the BCM or replace if confirmed faulty by manufacturer procedures.
- Clear codes and verify repair: erase codes, cycle ignition, and verify that the memory 1 function works and B1532 does not return.
Likely causes
- Disconnected or corroded connector at the Memory 1 switch
- Open/broken wire in switch harness (pinched, chafed, broken)
- Failed Memory 1 switch assembly
- Poor ground at switch or module
- Intermittent connector contact or contamination
Fault status
Status
Memory 1 switch circuit open — control module does not detect the Memory 1 switch signal. Inspect switch, wiring, connectors, power and grounds.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1532
FIAT
B — Body
Memory 1 switch circuit open
Views:
UK: 3
EN: 4
RU: 3
AI status
Completed
Completed
100%
Causes
- Faulty Memory 1 switch (mechanical/electrical failure)
- Open or broken wiring between switch and control module
- Poor or corroded connector at switch or control module
- Blown fuse or power supply interruption to switch circuit
- Faulty ground or grounding point
- Faulty BCM / control module input
Symptoms
- Memory 1 recall/store function does not operate
- No LED or indicator when Memory 1 button is pressed
- Unable to save or recall seat/mirror/steering positions for memory slot 1
- Fault stored in vehicle diagnostic memory (B1532)
- Intermittent operation of memory functions
What to check
- Read all stored codes and freeze frame data with a diagnostic scanner; clear and re-scan.
- Visually inspect Memory 1 switch, wiring harness, and connectors for damage, corrosion, or water ingress.
- Verify fuses and power supply feeding the switch circuit.
- Check connector pins for bent, pushed-out, or corroded terminals.
- Perform a wiggle test on the harness while operating the switch to look for intermittent faults.
- Measure continuity between the switch terminal and the BCM input pin; check for open circuit.
Signal parameters
- Signal type: low-voltage digital/switch input to the BCM
- Typical behavior: switch changes logic state when pressed (expected voltage change between supply and ground) — exact voltage depends on vehicle design
- Closed-switch continuity: near 0 ohms between switch terminals when actuated
- Open-switch: high resistance/OL (no continuity)
- Measured at switch connector and BCM pin to confirm circuit integrity
Diagnostic algorithm
- Verify the code: scan the vehicle and confirm B1532 is current or stored; check for related codes.
- Inspect switch and wiring: visually inspect the Memory 1 switch, harness, connectors, and nearby components for damage or contamination.
- Check power and fuse: verify the fuse and supply voltage to the switch circuit with ignition on.
- Test switch operation at the connector: backprobe the switch connector and observe voltage/continuity while operating the switch. If the switch does not change state, suspect the switch.
- Continuity to control module: with battery disconnected, measure continuity/resistance between the switch terminal and the BCM/input module pin. An open indicates wiring/connector fault.
- Repair wiring/connectors: repair any damaged wires, clean or replace corroded connectors, and secure pin connections.
- Replace switch if wiring and supply are good but switch does not change state or shows high resistance when actuated.
- If circuit and switch test good, test or reflash the BCM or replace if confirmed faulty by manufacturer procedures.
- Clear codes and verify repair: erase codes, cycle ignition, and verify that the memory 1 function works and B1532 does not return.
Likely causes
- Disconnected or corroded connector at the Memory 1 switch
- Open/broken wire in switch harness (pinched, chafed, broken)
- Failed Memory 1 switch assembly
- Poor ground at switch or module
- Intermittent connector contact or contamination
Fault status
Status
Memory 1 switch circuit open — control module does not detect the Memory 1 switch signal. Inspect switch, wiring, connectors, power and grounds.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1532
MITSUBISHI
B — Body
PS.buckle SW SHT.to GND for N.C
Views:
UK: 6
EN: 9
RU: 15
AI status
Completed
Completed
100%
Causes
- Faulty Memory 1 switch (mechanical/electrical failure)
- Open or broken wiring between switch and control module
- Poor or corroded connector at switch or control module
- Blown fuse or power supply interruption to switch circuit
- Faulty ground or grounding point
- Faulty BCM / control module input
Symptoms
- Memory 1 recall/store function does not operate
- No LED or indicator when Memory 1 button is pressed
- Unable to save or recall seat/mirror/steering positions for memory slot 1
- Fault stored in vehicle diagnostic memory (B1532)
- Intermittent operation of memory functions
What to check
- Read all stored codes and freeze frame data with a diagnostic scanner; clear and re-scan.
- Visually inspect Memory 1 switch, wiring harness, and connectors for damage, corrosion, or water ingress.
- Verify fuses and power supply feeding the switch circuit.
- Check connector pins for bent, pushed-out, or corroded terminals.
- Perform a wiggle test on the harness while operating the switch to look for intermittent faults.
- Measure continuity between the switch terminal and the BCM input pin; check for open circuit.
Signal parameters
- Signal type: low-voltage digital/switch input to the BCM
- Typical behavior: switch changes logic state when pressed (expected voltage change between supply and ground) — exact voltage depends on vehicle design
- Closed-switch continuity: near 0 ohms between switch terminals when actuated
- Open-switch: high resistance/OL (no continuity)
- Measured at switch connector and BCM pin to confirm circuit integrity
Diagnostic algorithm
- Verify the code: scan the vehicle and confirm B1532 is current or stored; check for related codes.
- Inspect switch and wiring: visually inspect the Memory 1 switch, harness, connectors, and nearby components for damage or contamination.
- Check power and fuse: verify the fuse and supply voltage to the switch circuit with ignition on.
- Test switch operation at the connector: backprobe the switch connector and observe voltage/continuity while operating the switch. If the switch does not change state, suspect the switch.
- Continuity to control module: with battery disconnected, measure continuity/resistance between the switch terminal and the BCM/input module pin. An open indicates wiring/connector fault.
- Repair wiring/connectors: repair any damaged wires, clean or replace corroded connectors, and secure pin connections.
- Replace switch if wiring and supply are good but switch does not change state or shows high resistance when actuated.
- If circuit and switch test good, test or reflash the BCM or replace if confirmed faulty by manufacturer procedures.
- Clear codes and verify repair: erase codes, cycle ignition, and verify that the memory 1 function works and B1532 does not return.
Likely causes
- Disconnected or corroded connector at the Memory 1 switch
- Open/broken wire in switch harness (pinched, chafed, broken)
- Failed Memory 1 switch assembly
- Poor ground at switch or module
- Intermittent connector contact or contamination
Fault status
Status
Memory 1 switch circuit open — control module does not detect the Memory 1 switch signal. Inspect switch, wiring, connectors, power and grounds.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1532
Other
B — Body
Memory 1 Switch Circuit Open
Views:
UK: 21
EN: 22
RU: 34
AI status
Completed
Completed
100%
Causes
- Faulty Memory 1 switch (mechanical/electrical failure)
- Open or broken wiring between switch and control module
- Poor or corroded connector at switch or control module
- Blown fuse or power supply interruption to switch circuit
- Faulty ground or grounding point
- Faulty BCM / control module input
Symptoms
- Memory 1 recall/store function does not operate
- No LED or indicator when Memory 1 button is pressed
- Unable to save or recall seat/mirror/steering positions for memory slot 1
- Fault stored in vehicle diagnostic memory (B1532)
- Intermittent operation of memory functions
What to check
- Read all stored codes and freeze frame data with a diagnostic scanner; clear and re-scan.
- Visually inspect Memory 1 switch, wiring harness, and connectors for damage, corrosion, or water ingress.
- Verify fuses and power supply feeding the switch circuit.
- Check connector pins for bent, pushed-out, or corroded terminals.
- Perform a wiggle test on the harness while operating the switch to look for intermittent faults.
- Measure continuity between the switch terminal and the BCM input pin; check for open circuit.
Signal parameters
- Signal type: low-voltage digital/switch input to the BCM
- Typical behavior: switch changes logic state when pressed (expected voltage change between supply and ground) — exact voltage depends on vehicle design
- Closed-switch continuity: near 0 ohms between switch terminals when actuated
- Open-switch: high resistance/OL (no continuity)
- Measured at switch connector and BCM pin to confirm circuit integrity
Diagnostic algorithm
- Verify the code: scan the vehicle and confirm B1532 is current or stored; check for related codes.
- Inspect switch and wiring: visually inspect the Memory 1 switch, harness, connectors, and nearby components for damage or contamination.
- Check power and fuse: verify the fuse and supply voltage to the switch circuit with ignition on.
- Test switch operation at the connector: backprobe the switch connector and observe voltage/continuity while operating the switch. If the switch does not change state, suspect the switch.
- Continuity to control module: with battery disconnected, measure continuity/resistance between the switch terminal and the BCM/input module pin. An open indicates wiring/connector fault.
- Repair wiring/connectors: repair any damaged wires, clean or replace corroded connectors, and secure pin connections.
- Replace switch if wiring and supply are good but switch does not change state or shows high resistance when actuated.
- If circuit and switch test good, test or reflash the BCM or replace if confirmed faulty by manufacturer procedures.
- Clear codes and verify repair: erase codes, cycle ignition, and verify that the memory 1 function works and B1532 does not return.
Likely causes
- Disconnected or corroded connector at the Memory 1 switch
- Open/broken wire in switch harness (pinched, chafed, broken)
- Failed Memory 1 switch assembly
- Poor ground at switch or module
- Intermittent connector contact or contamination
Fault status
Status
Memory 1 switch circuit open — control module does not detect the Memory 1 switch signal. Inspect switch, wiring, connectors, power and grounds.
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?
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👍 Like
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👎 Dislike
0
Send to email