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Home / DTC / B1407 — Driver window closing circuit

B1407 — Driver window closing circuit

Detailed page for trouble code B1407.

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22,491specific
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Code

B1407

ALFA ROMEO B — Body

Driver window closing circuit

Brand: ALFA ROMEO
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or relays for power windows
  • Faulty driver window switch (stuck, intermittent contacts)
  • Failed window motor or worn brushes
  • Damaged wiring harness, broken wire or corroded connector in driver door harness (including pinched wires in the hinge area)
  • Faulty body control module / window control module
  • Water ingress or corrosion at connectors or in the switch assembly

Symptoms

  • Driver window will not close when commanded or stops before full close
  • Window moves slowly or intermittently in the close direction
  • Window reverses or opens unexpectedly when closing (anti-pinch behavior)
  • Stored B1407 fault and possibly related body control messages or warnings
  • Noise from motor or grinding when attempting to close

What to check

  • Retrieve and record all stored codes with a compatible scan tool, note freeze frame or live data during an operation
  • Visually inspect fuses and relays for power window circuits; check fuse continuity
  • Inspect driver door wiring harness, especially through the door hinge boot, for chafing, broken wires or corrosion
  • Check connectors at the switch, motor/regulator and control module for corrosion, bent pins or poor mating
  • Operate the driver window while observing connector terminals for voltage changes and secure connections
  • Listen for motor noise and feel for regulator movement; check for mechanical obstruction by moving the glass manually with power off (carefully)

Signal parameters

  • Battery voltage at rest: ~12.0–12.8 V; running ~13.5–14.5 V. Supply to motor when commanded should be near battery voltage.
  • Switch command signal: when switch is pressed for close/open the control input should change state (0 V to ~battery voltage or ground) — varies by vehicle architecture.
  • Motor supply under no-load run: typically draws 2–10 A; under load or stall current may exceed 15–30 A depending on motor. A sustained stall current is abnormal.
  • Position/limit sensor (if equipped) or anti-pinch feedback: typically a discrete state (open/closed) or resistance/voltage that changes at end-of-travel. Compare to factory values.

Diagnostic algorithm

  1. Safety first — ensure ignition and power window operation is safe; support glass to prevent dropping during tests.
  2. Scan for codes: read B1407 and any related codes. Clear codes and attempt to reproduce to verify persistence.
  3. Check fuses/relays: verify continuity and that power is present at the window motor feed with ignition ON and while attempting to close the window.
  4. Operate the switch while measuring voltage at the motor connector: verify motor supply polarity and voltage when close command given. If no voltage, trace back to switch and control module.
  5. Inspect and wiggle the door harness in the hinge area while operating the switch to reveal intermittent wiring faults.
  6. Test the driver window switch: measure switch outputs or substitute a known-good switch if available.
  7. Bench test the motor by applying 12 V directly to the motor terminals (observe polarity for direction). If motor does not run or runs weakly/roughly, replace motor.
  8. Measure motor current while operating. Excessive current can indicate regulator binding or a failing motor. If current is excessive, inspect/regreplace regulator or free the glass tracks.
  9. Check ground integrity: measure voltage drop between motor ground and battery negative while operating; excessive drop indicates bad ground.
  10. Inspect anti-pinch/limit sensor inputs (if equipped) and verify correct operation or continuity. Replace sensor/module if faulty.
  11. If wiring and components test good but control signals from the body/window module are absent or erratic, test module outputs and inputs per factory procedure and consider module repair or replacement.
  12. After repairs, clear codes and perform several full up/down cycles to confirm normal operation and no fault reoccurrence.

Likely causes

  • Intermittent or failed driver window switch
  • Corroded connector or damaged wiring in door harness (common at hinge boot)
  • Window motor starting to fail (high current draw or intermittent operation)
  • Mechanical regulator binding causing excessive motor load

Fault status

⚠️ Status
B1407 — Driver window closing circuit fault: the control module detected an abnormal or missing signal while commanding the driver window to close; action required to inspect switch, motor, wiring, and related sensors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

Similar codes

B1400 B1401 B1402 B1403 B1410 B1411
89

Browse 89 ALFA ROMEO manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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Code

B1407

FIAT B — Body

Driver window closing circuit

Brand: FIAT
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or relays for power windows
  • Faulty driver window switch (stuck, intermittent contacts)
  • Failed window motor or worn brushes
  • Damaged wiring harness, broken wire or corroded connector in driver door harness (including pinched wires in the hinge area)
  • Faulty body control module / window control module
  • Water ingress or corrosion at connectors or in the switch assembly

Symptoms

  • Driver window will not close when commanded or stops before full close
  • Window moves slowly or intermittently in the close direction
  • Window reverses or opens unexpectedly when closing (anti-pinch behavior)
  • Stored B1407 fault and possibly related body control messages or warnings
  • Noise from motor or grinding when attempting to close

What to check

  • Retrieve and record all stored codes with a compatible scan tool, note freeze frame or live data during an operation
  • Visually inspect fuses and relays for power window circuits; check fuse continuity
  • Inspect driver door wiring harness, especially through the door hinge boot, for chafing, broken wires or corrosion
  • Check connectors at the switch, motor/regulator and control module for corrosion, bent pins or poor mating
  • Operate the driver window while observing connector terminals for voltage changes and secure connections
  • Listen for motor noise and feel for regulator movement; check for mechanical obstruction by moving the glass manually with power off (carefully)

Signal parameters

  • Battery voltage at rest: ~12.0–12.8 V; running ~13.5–14.5 V. Supply to motor when commanded should be near battery voltage.
  • Switch command signal: when switch is pressed for close/open the control input should change state (0 V to ~battery voltage or ground) — varies by vehicle architecture.
  • Motor supply under no-load run: typically draws 2–10 A; under load or stall current may exceed 15–30 A depending on motor. A sustained stall current is abnormal.
  • Position/limit sensor (if equipped) or anti-pinch feedback: typically a discrete state (open/closed) or resistance/voltage that changes at end-of-travel. Compare to factory values.

Diagnostic algorithm

  1. Safety first — ensure ignition and power window operation is safe; support glass to prevent dropping during tests.
  2. Scan for codes: read B1407 and any related codes. Clear codes and attempt to reproduce to verify persistence.
  3. Check fuses/relays: verify continuity and that power is present at the window motor feed with ignition ON and while attempting to close the window.
  4. Operate the switch while measuring voltage at the motor connector: verify motor supply polarity and voltage when close command given. If no voltage, trace back to switch and control module.
  5. Inspect and wiggle the door harness in the hinge area while operating the switch to reveal intermittent wiring faults.
  6. Test the driver window switch: measure switch outputs or substitute a known-good switch if available.
  7. Bench test the motor by applying 12 V directly to the motor terminals (observe polarity for direction). If motor does not run or runs weakly/roughly, replace motor.
  8. Measure motor current while operating. Excessive current can indicate regulator binding or a failing motor. If current is excessive, inspect/regreplace regulator or free the glass tracks.
  9. Check ground integrity: measure voltage drop between motor ground and battery negative while operating; excessive drop indicates bad ground.
  10. Inspect anti-pinch/limit sensor inputs (if equipped) and verify correct operation or continuity. Replace sensor/module if faulty.
  11. If wiring and components test good but control signals from the body/window module are absent or erratic, test module outputs and inputs per factory procedure and consider module repair or replacement.
  12. After repairs, clear codes and perform several full up/down cycles to confirm normal operation and no fault reoccurrence.

Likely causes

  • Intermittent or failed driver window switch
  • Corroded connector or damaged wiring in door harness (common at hinge boot)
  • Window motor starting to fail (high current draw or intermittent operation)
  • Mechanical regulator binding causing excessive motor load

Fault status

⚠️ Status
B1407 — Driver window closing circuit fault: the control module detected an abnormal or missing signal while commanding the driver window to close; action required to inspect switch, motor, wiring, and related sensors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

Similar codes

B1400 B1401 B1402 B1403 B1410 B1411
Repair manuals

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26

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Code

B1407

LAND ROVER B — Body

Trailer control module

Brand: LAND ROVER
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or relays for power windows
  • Faulty driver window switch (stuck, intermittent contacts)
  • Failed window motor or worn brushes
  • Damaged wiring harness, broken wire or corroded connector in driver door harness (including pinched wires in the hinge area)
  • Faulty body control module / window control module
  • Water ingress or corrosion at connectors or in the switch assembly

Symptoms

  • Driver window will not close when commanded or stops before full close
  • Window moves slowly or intermittently in the close direction
  • Window reverses or opens unexpectedly when closing (anti-pinch behavior)
  • Stored B1407 fault and possibly related body control messages or warnings
  • Noise from motor or grinding when attempting to close

What to check

  • Retrieve and record all stored codes with a compatible scan tool, note freeze frame or live data during an operation
  • Visually inspect fuses and relays for power window circuits; check fuse continuity
  • Inspect driver door wiring harness, especially through the door hinge boot, for chafing, broken wires or corrosion
  • Check connectors at the switch, motor/regulator and control module for corrosion, bent pins or poor mating
  • Operate the driver window while observing connector terminals for voltage changes and secure connections
  • Listen for motor noise and feel for regulator movement; check for mechanical obstruction by moving the glass manually with power off (carefully)

Signal parameters

  • Battery voltage at rest: ~12.0–12.8 V; running ~13.5–14.5 V. Supply to motor when commanded should be near battery voltage.
  • Switch command signal: when switch is pressed for close/open the control input should change state (0 V to ~battery voltage or ground) — varies by vehicle architecture.
  • Motor supply under no-load run: typically draws 2–10 A; under load or stall current may exceed 15–30 A depending on motor. A sustained stall current is abnormal.
  • Position/limit sensor (if equipped) or anti-pinch feedback: typically a discrete state (open/closed) or resistance/voltage that changes at end-of-travel. Compare to factory values.

Diagnostic algorithm

  1. Safety first — ensure ignition and power window operation is safe; support glass to prevent dropping during tests.
  2. Scan for codes: read B1407 and any related codes. Clear codes and attempt to reproduce to verify persistence.
  3. Check fuses/relays: verify continuity and that power is present at the window motor feed with ignition ON and while attempting to close the window.
  4. Operate the switch while measuring voltage at the motor connector: verify motor supply polarity and voltage when close command given. If no voltage, trace back to switch and control module.
  5. Inspect and wiggle the door harness in the hinge area while operating the switch to reveal intermittent wiring faults.
  6. Test the driver window switch: measure switch outputs or substitute a known-good switch if available.
  7. Bench test the motor by applying 12 V directly to the motor terminals (observe polarity for direction). If motor does not run or runs weakly/roughly, replace motor.
  8. Measure motor current while operating. Excessive current can indicate regulator binding or a failing motor. If current is excessive, inspect/regreplace regulator or free the glass tracks.
  9. Check ground integrity: measure voltage drop between motor ground and battery negative while operating; excessive drop indicates bad ground.
  10. Inspect anti-pinch/limit sensor inputs (if equipped) and verify correct operation or continuity. Replace sensor/module if faulty.
  11. If wiring and components test good but control signals from the body/window module are absent or erratic, test module outputs and inputs per factory procedure and consider module repair or replacement.
  12. After repairs, clear codes and perform several full up/down cycles to confirm normal operation and no fault reoccurrence.

Likely causes

  • Intermittent or failed driver window switch
  • Corroded connector or damaged wiring in door harness (common at hinge boot)
  • Window motor starting to fail (high current draw or intermittent operation)
  • Mechanical regulator binding causing excessive motor load

Fault status

⚠️ Status
B1407 — Driver window closing circuit fault: the control module detected an abnormal or missing signal while commanding the driver window to close; action required to inspect switch, motor, wiring, and related sensors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

Similar codes

B1400 B1401 B1402 B1403 B1410 B1411
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

B1407

MITSUBISHI B — Body

FR impact sensor low voltage

Brand: MITSUBISHI
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or relays for power windows
  • Faulty driver window switch (stuck, intermittent contacts)
  • Failed window motor or worn brushes
  • Damaged wiring harness, broken wire or corroded connector in driver door harness (including pinched wires in the hinge area)
  • Faulty body control module / window control module
  • Water ingress or corrosion at connectors or in the switch assembly

Symptoms

  • Driver window will not close when commanded or stops before full close
  • Window moves slowly or intermittently in the close direction
  • Window reverses or opens unexpectedly when closing (anti-pinch behavior)
  • Stored B1407 fault and possibly related body control messages or warnings
  • Noise from motor or grinding when attempting to close

What to check

  • Retrieve and record all stored codes with a compatible scan tool, note freeze frame or live data during an operation
  • Visually inspect fuses and relays for power window circuits; check fuse continuity
  • Inspect driver door wiring harness, especially through the door hinge boot, for chafing, broken wires or corrosion
  • Check connectors at the switch, motor/regulator and control module for corrosion, bent pins or poor mating
  • Operate the driver window while observing connector terminals for voltage changes and secure connections
  • Listen for motor noise and feel for regulator movement; check for mechanical obstruction by moving the glass manually with power off (carefully)

Signal parameters

  • Battery voltage at rest: ~12.0–12.8 V; running ~13.5–14.5 V. Supply to motor when commanded should be near battery voltage.
  • Switch command signal: when switch is pressed for close/open the control input should change state (0 V to ~battery voltage or ground) — varies by vehicle architecture.
  • Motor supply under no-load run: typically draws 2–10 A; under load or stall current may exceed 15–30 A depending on motor. A sustained stall current is abnormal.
  • Position/limit sensor (if equipped) or anti-pinch feedback: typically a discrete state (open/closed) or resistance/voltage that changes at end-of-travel. Compare to factory values.

Diagnostic algorithm

  1. Safety first — ensure ignition and power window operation is safe; support glass to prevent dropping during tests.
  2. Scan for codes: read B1407 and any related codes. Clear codes and attempt to reproduce to verify persistence.
  3. Check fuses/relays: verify continuity and that power is present at the window motor feed with ignition ON and while attempting to close the window.
  4. Operate the switch while measuring voltage at the motor connector: verify motor supply polarity and voltage when close command given. If no voltage, trace back to switch and control module.
  5. Inspect and wiggle the door harness in the hinge area while operating the switch to reveal intermittent wiring faults.
  6. Test the driver window switch: measure switch outputs or substitute a known-good switch if available.
  7. Bench test the motor by applying 12 V directly to the motor terminals (observe polarity for direction). If motor does not run or runs weakly/roughly, replace motor.
  8. Measure motor current while operating. Excessive current can indicate regulator binding or a failing motor. If current is excessive, inspect/regreplace regulator or free the glass tracks.
  9. Check ground integrity: measure voltage drop between motor ground and battery negative while operating; excessive drop indicates bad ground.
  10. Inspect anti-pinch/limit sensor inputs (if equipped) and verify correct operation or continuity. Replace sensor/module if faulty.
  11. If wiring and components test good but control signals from the body/window module are absent or erratic, test module outputs and inputs per factory procedure and consider module repair or replacement.
  12. After repairs, clear codes and perform several full up/down cycles to confirm normal operation and no fault reoccurrence.

Likely causes

  • Intermittent or failed driver window switch
  • Corroded connector or damaged wiring in door harness (common at hinge boot)
  • Window motor starting to fail (high current draw or intermittent operation)
  • Mechanical regulator binding causing excessive motor load

Fault status

⚠️ Status
B1407 — Driver window closing circuit fault: the control module detected an abnormal or missing signal while commanding the driver window to close; action required to inspect switch, motor, wiring, and related sensors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

Similar codes

B1400 B1401 B1402 B1403 B1410 B1411
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

B1407

Other B — Body

Driver Power Window Up Circuit Open

Brand: Other
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or relays for power windows
  • Faulty driver window switch (stuck, intermittent contacts)
  • Failed window motor or worn brushes
  • Damaged wiring harness, broken wire or corroded connector in driver door harness (including pinched wires in the hinge area)
  • Faulty body control module / window control module
  • Water ingress or corrosion at connectors or in the switch assembly

Symptoms

  • Driver window will not close when commanded or stops before full close
  • Window moves slowly or intermittently in the close direction
  • Window reverses or opens unexpectedly when closing (anti-pinch behavior)
  • Stored B1407 fault and possibly related body control messages or warnings
  • Noise from motor or grinding when attempting to close

What to check

  • Retrieve and record all stored codes with a compatible scan tool, note freeze frame or live data during an operation
  • Visually inspect fuses and relays for power window circuits; check fuse continuity
  • Inspect driver door wiring harness, especially through the door hinge boot, for chafing, broken wires or corrosion
  • Check connectors at the switch, motor/regulator and control module for corrosion, bent pins or poor mating
  • Operate the driver window while observing connector terminals for voltage changes and secure connections
  • Listen for motor noise and feel for regulator movement; check for mechanical obstruction by moving the glass manually with power off (carefully)

Signal parameters

  • Battery voltage at rest: ~12.0–12.8 V; running ~13.5–14.5 V. Supply to motor when commanded should be near battery voltage.
  • Switch command signal: when switch is pressed for close/open the control input should change state (0 V to ~battery voltage or ground) — varies by vehicle architecture.
  • Motor supply under no-load run: typically draws 2–10 A; under load or stall current may exceed 15–30 A depending on motor. A sustained stall current is abnormal.
  • Position/limit sensor (if equipped) or anti-pinch feedback: typically a discrete state (open/closed) or resistance/voltage that changes at end-of-travel. Compare to factory values.

Diagnostic algorithm

  1. Safety first — ensure ignition and power window operation is safe; support glass to prevent dropping during tests.
  2. Scan for codes: read B1407 and any related codes. Clear codes and attempt to reproduce to verify persistence.
  3. Check fuses/relays: verify continuity and that power is present at the window motor feed with ignition ON and while attempting to close the window.
  4. Operate the switch while measuring voltage at the motor connector: verify motor supply polarity and voltage when close command given. If no voltage, trace back to switch and control module.
  5. Inspect and wiggle the door harness in the hinge area while operating the switch to reveal intermittent wiring faults.
  6. Test the driver window switch: measure switch outputs or substitute a known-good switch if available.
  7. Bench test the motor by applying 12 V directly to the motor terminals (observe polarity for direction). If motor does not run or runs weakly/roughly, replace motor.
  8. Measure motor current while operating. Excessive current can indicate regulator binding or a failing motor. If current is excessive, inspect/regreplace regulator or free the glass tracks.
  9. Check ground integrity: measure voltage drop between motor ground and battery negative while operating; excessive drop indicates bad ground.
  10. Inspect anti-pinch/limit sensor inputs (if equipped) and verify correct operation or continuity. Replace sensor/module if faulty.
  11. If wiring and components test good but control signals from the body/window module are absent or erratic, test module outputs and inputs per factory procedure and consider module repair or replacement.
  12. After repairs, clear codes and perform several full up/down cycles to confirm normal operation and no fault reoccurrence.

Likely causes

  • Intermittent or failed driver window switch
  • Corroded connector or damaged wiring in door harness (common at hinge boot)
  • Window motor starting to fail (high current draw or intermittent operation)
  • Mechanical regulator binding causing excessive motor load

Fault status

⚠️ Status
B1407 — Driver window closing circuit fault: the control module detected an abnormal or missing signal while commanding the driver window to close; action required to inspect switch, motor, wiring, and related sensors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

Similar codes

B1400 B1401 B1402 B1403 B1410 B1411
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