Code
B1414
ALFA ROMEO
B — Body
Rear left electric window motor circuit
Views:
UK: 4
EN: 8
RU: 6
AI status
Completed
Completed
100%
Causes
- Blown fuse or tripped relay protecting window circuit
- Damaged wiring (open, short to ground or battery) to rear left window motor or switch
- Corroded or loose connector at motor, switch or module
- Failed rear left window motor (worn brushes, seized gears)
- Faulty window switch or door control module
- Faulty body control module / comfort module software or hardware
Symptoms
- Rear left window does not operate or operates intermittently
- Slow or labored window movement
- No response from rear left window switch while other windows work
- Clicking from relay or control module when switch is pressed
- Other body-network messages or errors related to windows (depending on vehicle)
What to check
- Verify customer complaint and reproduce fault with scan tool connected
- Check related fuses and relays for continuity and proper seating
- Operate rear left window while listening at door for motor activity
- Inspect door harness and connectors for damage, corrosion, or water ingress
- Check operation of master and door window switches (compare with another window)
- Scan for additional DTCs and check freeze frame/occurrence data
Signal parameters
- Battery supply at motor connector when switch is operated: ~11–14 V (polarity reverses for up/down)
- Negligible voltage when switch not pressed
- Motor coil resistance: low ohms (typical small DC motor range) — much lower than open circuit
- Continuity between motor ground and vehicle chassis when connector connected
- Current draw: notable inrush on start; excessive continuous current suggests seizure or short (use clamp meter)
Diagnostic algorithm
- Safety: Park vehicle, ignition on or as required, battery stable. Follow manufacturer safety procedures.
- Check fuses/relays: Verify fuse(s) and relay(s) for the rear window circuit are good and sockets are intact.
- Reproduce and observe: With a scan tool, attempt door operation and note any module errors or actuator tests.
- Inspect connectors/harness: Open door trim, inspect motor connector, switch connector, and loom at hinge for damage/corrosion.
- Voltage check at motor: Operate switch while probing motor power terminals. Confirm battery voltage appears and polarity reverses for up/down.
- If no voltage at motor: Backprobe switch and BCM outputs — check continuity to motor and presence of command voltages. Repair wiring/connector as required.
- If voltage present but motor does not run: Disconnect motor and measure motor coil resistance. If open or very high, replace motor.
- Current draw test: With motor connected, measure current during operation. Excessive current or stall indicates mechanical binding or failing motor.
- Check switch operation: Swap with known-good switch or bench-test switch continuity to confirm proper function.
- Repair: Repair/replace wiring, connectors, switch, motor, or regulator as indicated. Replace fuse/relay only after fixing root cause.
- Clear DTCs and re-test: After repairs, erase codes, cycle windows and verify fault does not return and function is normal.
- If fault persists and wiring/motor/switch good: Consider module programming, reflash or replacement per manufacturer guidance.
Likely causes
- Corroded/loose connector at motor or inside door harness
- Worn or seized motor causing overcurrent or no movement
- Open/short in door wiring loom where it flexes
- Faulty window switch or ground connection
Fault status
Status
Rear left window motor circuit fault detected. Stored when open/short, excessive current, or intermittent connection is detected on the rear left window motor circuit.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1414
FIAT
B — Body
Rear left electric window motor circuit
Views:
UK: 4
EN: 9
RU: 7
AI status
Completed
Completed
100%
Causes
- Blown fuse or tripped relay protecting window circuit
- Damaged wiring (open, short to ground or battery) to rear left window motor or switch
- Corroded or loose connector at motor, switch or module
- Failed rear left window motor (worn brushes, seized gears)
- Faulty window switch or door control module
- Faulty body control module / comfort module software or hardware
Symptoms
- Rear left window does not operate or operates intermittently
- Slow or labored window movement
- No response from rear left window switch while other windows work
- Clicking from relay or control module when switch is pressed
- Other body-network messages or errors related to windows (depending on vehicle)
What to check
- Verify customer complaint and reproduce fault with scan tool connected
- Check related fuses and relays for continuity and proper seating
- Operate rear left window while listening at door for motor activity
- Inspect door harness and connectors for damage, corrosion, or water ingress
- Check operation of master and door window switches (compare with another window)
- Scan for additional DTCs and check freeze frame/occurrence data
Signal parameters
- Battery supply at motor connector when switch is operated: ~11–14 V (polarity reverses for up/down)
- Negligible voltage when switch not pressed
- Motor coil resistance: low ohms (typical small DC motor range) — much lower than open circuit
- Continuity between motor ground and vehicle chassis when connector connected
- Current draw: notable inrush on start; excessive continuous current suggests seizure or short (use clamp meter)
Diagnostic algorithm
- Safety: Park vehicle, ignition on or as required, battery stable. Follow manufacturer safety procedures.
- Check fuses/relays: Verify fuse(s) and relay(s) for the rear window circuit are good and sockets are intact.
- Reproduce and observe: With a scan tool, attempt door operation and note any module errors or actuator tests.
- Inspect connectors/harness: Open door trim, inspect motor connector, switch connector, and loom at hinge for damage/corrosion.
- Voltage check at motor: Operate switch while probing motor power terminals. Confirm battery voltage appears and polarity reverses for up/down.
- If no voltage at motor: Backprobe switch and BCM outputs — check continuity to motor and presence of command voltages. Repair wiring/connector as required.
- If voltage present but motor does not run: Disconnect motor and measure motor coil resistance. If open or very high, replace motor.
- Current draw test: With motor connected, measure current during operation. Excessive current or stall indicates mechanical binding or failing motor.
- Check switch operation: Swap with known-good switch or bench-test switch continuity to confirm proper function.
- Repair: Repair/replace wiring, connectors, switch, motor, or regulator as indicated. Replace fuse/relay only after fixing root cause.
- Clear DTCs and re-test: After repairs, erase codes, cycle windows and verify fault does not return and function is normal.
- If fault persists and wiring/motor/switch good: Consider module programming, reflash or replacement per manufacturer guidance.
Likely causes
- Corroded/loose connector at motor or inside door harness
- Worn or seized motor causing overcurrent or no movement
- Open/short in door wiring loom where it flexes
- Faulty window switch or ground connection
Fault status
Status
Rear left window motor circuit fault detected. Stored when open/short, excessive current, or intermittent connection is detected on the rear left window motor circuit.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1414
LAND ROVER
B — Body
Front left - seat temperature control module - Fan 2 motor speed control
Views:
UK: 6
EN: 11
RU: 8
AI status
Completed
Completed
100%
Causes
- Blown fuse or tripped relay protecting window circuit
- Damaged wiring (open, short to ground or battery) to rear left window motor or switch
- Corroded or loose connector at motor, switch or module
- Failed rear left window motor (worn brushes, seized gears)
- Faulty window switch or door control module
- Faulty body control module / comfort module software or hardware
Symptoms
- Rear left window does not operate or operates intermittently
- Slow or labored window movement
- No response from rear left window switch while other windows work
- Clicking from relay or control module when switch is pressed
- Other body-network messages or errors related to windows (depending on vehicle)
What to check
- Verify customer complaint and reproduce fault with scan tool connected
- Check related fuses and relays for continuity and proper seating
- Operate rear left window while listening at door for motor activity
- Inspect door harness and connectors for damage, corrosion, or water ingress
- Check operation of master and door window switches (compare with another window)
- Scan for additional DTCs and check freeze frame/occurrence data
Signal parameters
- Battery supply at motor connector when switch is operated: ~11–14 V (polarity reverses for up/down)
- Negligible voltage when switch not pressed
- Motor coil resistance: low ohms (typical small DC motor range) — much lower than open circuit
- Continuity between motor ground and vehicle chassis when connector connected
- Current draw: notable inrush on start; excessive continuous current suggests seizure or short (use clamp meter)
Diagnostic algorithm
- Safety: Park vehicle, ignition on or as required, battery stable. Follow manufacturer safety procedures.
- Check fuses/relays: Verify fuse(s) and relay(s) for the rear window circuit are good and sockets are intact.
- Reproduce and observe: With a scan tool, attempt door operation and note any module errors or actuator tests.
- Inspect connectors/harness: Open door trim, inspect motor connector, switch connector, and loom at hinge for damage/corrosion.
- Voltage check at motor: Operate switch while probing motor power terminals. Confirm battery voltage appears and polarity reverses for up/down.
- If no voltage at motor: Backprobe switch and BCM outputs — check continuity to motor and presence of command voltages. Repair wiring/connector as required.
- If voltage present but motor does not run: Disconnect motor and measure motor coil resistance. If open or very high, replace motor.
- Current draw test: With motor connected, measure current during operation. Excessive current or stall indicates mechanical binding or failing motor.
- Check switch operation: Swap with known-good switch or bench-test switch continuity to confirm proper function.
- Repair: Repair/replace wiring, connectors, switch, motor, or regulator as indicated. Replace fuse/relay only after fixing root cause.
- Clear DTCs and re-test: After repairs, erase codes, cycle windows and verify fault does not return and function is normal.
- If fault persists and wiring/motor/switch good: Consider module programming, reflash or replacement per manufacturer guidance.
Likely causes
- Corroded/loose connector at motor or inside door harness
- Worn or seized motor causing overcurrent or no movement
- Open/short in door wiring loom where it flexes
- Faulty window switch or ground connection
Fault status
Status
Rear left window motor circuit fault detected. Stored when open/short, excessive current, or intermittent connection is detected on the rear left window motor circuit.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour experience will help others
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Code
B1414
MITSUBISHI
B — Body
F ABG(1)PS.active circuit short
Views:
UK: 4
EN: 14
RU: 9
AI status
Completed
Completed
100%
Causes
- Blown fuse or tripped relay protecting window circuit
- Damaged wiring (open, short to ground or battery) to rear left window motor or switch
- Corroded or loose connector at motor, switch or module
- Failed rear left window motor (worn brushes, seized gears)
- Faulty window switch or door control module
- Faulty body control module / comfort module software or hardware
Symptoms
- Rear left window does not operate or operates intermittently
- Slow or labored window movement
- No response from rear left window switch while other windows work
- Clicking from relay or control module when switch is pressed
- Other body-network messages or errors related to windows (depending on vehicle)
What to check
- Verify customer complaint and reproduce fault with scan tool connected
- Check related fuses and relays for continuity and proper seating
- Operate rear left window while listening at door for motor activity
- Inspect door harness and connectors for damage, corrosion, or water ingress
- Check operation of master and door window switches (compare with another window)
- Scan for additional DTCs and check freeze frame/occurrence data
Signal parameters
- Battery supply at motor connector when switch is operated: ~11–14 V (polarity reverses for up/down)
- Negligible voltage when switch not pressed
- Motor coil resistance: low ohms (typical small DC motor range) — much lower than open circuit
- Continuity between motor ground and vehicle chassis when connector connected
- Current draw: notable inrush on start; excessive continuous current suggests seizure or short (use clamp meter)
Diagnostic algorithm
- Safety: Park vehicle, ignition on or as required, battery stable. Follow manufacturer safety procedures.
- Check fuses/relays: Verify fuse(s) and relay(s) for the rear window circuit are good and sockets are intact.
- Reproduce and observe: With a scan tool, attempt door operation and note any module errors or actuator tests.
- Inspect connectors/harness: Open door trim, inspect motor connector, switch connector, and loom at hinge for damage/corrosion.
- Voltage check at motor: Operate switch while probing motor power terminals. Confirm battery voltage appears and polarity reverses for up/down.
- If no voltage at motor: Backprobe switch and BCM outputs — check continuity to motor and presence of command voltages. Repair wiring/connector as required.
- If voltage present but motor does not run: Disconnect motor and measure motor coil resistance. If open or very high, replace motor.
- Current draw test: With motor connected, measure current during operation. Excessive current or stall indicates mechanical binding or failing motor.
- Check switch operation: Swap with known-good switch or bench-test switch continuity to confirm proper function.
- Repair: Repair/replace wiring, connectors, switch, motor, or regulator as indicated. Replace fuse/relay only after fixing root cause.
- Clear DTCs and re-test: After repairs, erase codes, cycle windows and verify fault does not return and function is normal.
- If fault persists and wiring/motor/switch good: Consider module programming, reflash or replacement per manufacturer guidance.
Likely causes
- Corroded/loose connector at motor or inside door harness
- Worn or seized motor causing overcurrent or no movement
- Open/short in door wiring loom where it flexes
- Faulty window switch or ground connection
Fault status
Status
Rear left window motor circuit fault detected. Stored when open/short, excessive current, or intermittent connection is detected on the rear left window motor circuit.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
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0
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Code
B1414
Other
B — Body
Power Window LR Motor Circuit Failure
Views:
UK: 18
EN: 28
RU: 27
AI status
Completed
Completed
100%
Causes
- Blown fuse or tripped relay protecting window circuit
- Damaged wiring (open, short to ground or battery) to rear left window motor or switch
- Corroded or loose connector at motor, switch or module
- Failed rear left window motor (worn brushes, seized gears)
- Faulty window switch or door control module
- Faulty body control module / comfort module software or hardware
Symptoms
- Rear left window does not operate or operates intermittently
- Slow or labored window movement
- No response from rear left window switch while other windows work
- Clicking from relay or control module when switch is pressed
- Other body-network messages or errors related to windows (depending on vehicle)
What to check
- Verify customer complaint and reproduce fault with scan tool connected
- Check related fuses and relays for continuity and proper seating
- Operate rear left window while listening at door for motor activity
- Inspect door harness and connectors for damage, corrosion, or water ingress
- Check operation of master and door window switches (compare with another window)
- Scan for additional DTCs and check freeze frame/occurrence data
Signal parameters
- Battery supply at motor connector when switch is operated: ~11–14 V (polarity reverses for up/down)
- Negligible voltage when switch not pressed
- Motor coil resistance: low ohms (typical small DC motor range) — much lower than open circuit
- Continuity between motor ground and vehicle chassis when connector connected
- Current draw: notable inrush on start; excessive continuous current suggests seizure or short (use clamp meter)
Diagnostic algorithm
- Safety: Park vehicle, ignition on or as required, battery stable. Follow manufacturer safety procedures.
- Check fuses/relays: Verify fuse(s) and relay(s) for the rear window circuit are good and sockets are intact.
- Reproduce and observe: With a scan tool, attempt door operation and note any module errors or actuator tests.
- Inspect connectors/harness: Open door trim, inspect motor connector, switch connector, and loom at hinge for damage/corrosion.
- Voltage check at motor: Operate switch while probing motor power terminals. Confirm battery voltage appears and polarity reverses for up/down.
- If no voltage at motor: Backprobe switch and BCM outputs — check continuity to motor and presence of command voltages. Repair wiring/connector as required.
- If voltage present but motor does not run: Disconnect motor and measure motor coil resistance. If open or very high, replace motor.
- Current draw test: With motor connected, measure current during operation. Excessive current or stall indicates mechanical binding or failing motor.
- Check switch operation: Swap with known-good switch or bench-test switch continuity to confirm proper function.
- Repair: Repair/replace wiring, connectors, switch, motor, or regulator as indicated. Replace fuse/relay only after fixing root cause.
- Clear DTCs and re-test: After repairs, erase codes, cycle windows and verify fault does not return and function is normal.
- If fault persists and wiring/motor/switch good: Consider module programming, reflash or replacement per manufacturer guidance.
Likely causes
- Corroded/loose connector at motor or inside door harness
- Worn or seized motor causing overcurrent or no movement
- Open/short in door wiring loom where it flexes
- Faulty window switch or ground connection
Fault status
Status
Rear left window motor circuit fault detected. Stored when open/short, excessive current, or intermittent connection is detected on the rear left window motor circuit.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Workshop Manuals
Available brands with manuals
2
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Workshop ManualAudi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop ManualAUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop ManualAudi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop ManualAudi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop ManualAudi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop ManualAudi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
Workshop ManualAudi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop ManualAudi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop ManualAudi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop ManualAudi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop ManualLAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour experience will help others
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