Mazda 3 – Dardoor

2018-2020 Mazda3 Wiring Diagram

Hamza Sama — Fri, 21 Oct 2022 14:12:30 +0000

Original OEM Workshop Manual for 2018-2020 Mazda3 – Wiring Diagram (L4-2.0L Skyactiv-G)

Access the official wiring diagram manual for the 2018-2020 Mazda3 with the L4-2.0L Skyactiv-G engine, available in PDF format. This original OEM manual includes comprehensive circuit wiring diagrams for each electrical system, wiring routes, harness details, and relay locations. It’s the exact resource used by Mazda dealer technicians to diagnose and repair your vehicle.

File Format	PDF
File Language	English
You’ll Get	37.5 MB
Page Count	408
Delivery Method	Instant Download

Key Features:

Complete circuit and wiring diagrams for each electrical system
Wiring routes and harness layouts
Detailed relay and component locations
Manufacturer-authorized, professional-grade information

Ensure accurate electrical diagnostics and repairs for your Mazda3 with this trusted OEM workshop manual.

This is the original OEM workshop manual for the 2018-2020 Mazda3 wiring diagram, L4-2.0L Skyactive-G in PDF.

This manual includes the procedures for maintenance, disassembling, reassembling, inspection, and adjustment of components and diagnostics for the guidance of experienced mechanics. Please peruse and utilize this manual to ensure complete repair work to keep your vehicle in optimum condition. Before buying this manual, check if your car is subject to a Mazda service recall so the local dealer can repair it for FREE. When replacing parts during repair work, please make sure to use Mazda OEM genuine parts.

Table of Contents : 2018-2020 Mazda3 Wiring Diagram

Sample Pages

CAUTION: Please note that this manual is made for the use of persons who have special techniques and certifications. If non-specialized or uncertified technicians perform repairs or services only using this manual or without proper equipment or tools, this may cause severe injury to you or other persons nearby and also cause damage to your vehicle. To prevent dangerous operations and damage to your vehicle, please be sure to follow the instructions thoroughly.

2007 Mazda3 Repair Manual

Nawal — Sat, 06 Feb 2021 22:22:09 +0000

This is the original OEM service and workshop repair manual for the 2007 Mazda3 and Mazdaspeed3, the first generation ( 4 doors and 5 doors) in a simple PDF file format. It is the same manual that your local Mazda dealer mechanics use to diagnose and repair your car.

File Format	PDF
File Language	English
YOU’LL GET	149.8 MB
Number of Pages	2,910
Delivery Method	Instant Download

This manual includes the procedures for maintenance, disassembling, reassembling, inspection, and adjustment of components and diagnostics for guidance of experienced mechanics. Please use this manual to ensure complete repair work to keep your vehicle in optimum condition. When replacement parts during repair work are needed, be sure to use OEM genuine parts.

CONTENTS: 2007 Mazda3 and Mazdaspeed3 Repair Manual

Sample Pages

CAUTION: Please note that this manual is made for the use of persons who have special techniques and certifications. If non-specialized or uncertified technicians perform repairs or services only using this manual or without proper equipment or tools, this may cause severe injury to you or other persons nearby and also cause damage to your vehicle. In order to prevent dangerous operations and damage to your vehicle, please be sure to follow the instructions thoroughly.

2010 Mazda3 Repair Manual

Nawal — Sat, 06 Feb 2021 17:18:52 +0000

This is the original OEM service and workshop repair manual for the 2010 Mazda3 and Mazdaspeed3, the second generation in a simple PDF file format. It is the same manual that your local Mazda dealer mechanics use to diagnose and repair your car.

File Format	PDF
File Language	English
YOU’LL GET	188.7 MB
Number of Pages	3,358
Delivery Method	Instant Download

CONTENTS: 2010 Mazda3 and Mazdaspeed3 Repair Manual

Sample Pages

2014 Mazda Mazda3 Repair Manual

Nawal — Thu, 17 Dec 2020 02:03:42 +0000

Get the original OEM workshop PDF document for the 2014 Mazda Mazda3, complete with wiring diagrams and body repair manuals. This comprehensive guide is identical to the manual used by Mazda dealership mechanics for diagnosing, maintaining, and repairing your vehicle.

File Format	PDF
File Language	Engish
You’ll Get	275.7 MB
Page Count	10,229
Wiring Diagram	Included
Delivery Method	Instant Download

Download Now: Get your copy of the 2014 Mazda Mazda3 OEM Workshop Manual now and keep your vehicle running smoothly with trusted repair and service procedures!

Vehicle Details

Make: Mazda
Model: Mazda3
Year: 2014
Generation: Third Generation (BM/BN Series)
Body Styles: Sedan and Hatchback
Engine Types:
- SKYACTIV-G (Gasoline)

Key Features

Mazda-Certified: Follows official manufacturer-recommended methods.
Comprehensive: Covers all aspects of maintenance, repair, and diagnostics.
User-Friendly: Includes visual aids such as diagrams, tables, and illustrations.
PDF Format: Portable and accessible on various devices for convenience.

Why This Manual is Essential

Save Money: Perform maintenance and repairs yourself without costly dealership visits.
Accurate Repairs: Ensure your Mazda3 is repaired to factory standards.
Convenience: Instant access to reliable information when you need it.

Perfect For:

DIY car owners who want to handle repairs confidently.
Professional mechanics seeking an official reference guide.
Enthusiasts looking to maintain their Mazda3 in peak condition.

This manual provides detailed instructions for maintenance, disassembly, reassembly, component inspection, adjustment, and diagnostics—intended for use by experienced mechanics. Proper application of this guide will help ensure thorough repairs and maintain your vehicle in peak condition.

Important Note: Before purchasing this manual, please check whether your vehicle is subject to any active service recalls, as authorized dealerships may perform necessary repairs free of charge. When replacing parts, always use genuine OEM components to ensure safety, reliability, and long-term performance.

Table of Contents : 2014 Mazda Mazda3 Repair Manual

SAMPLE PAGES

A few pages will help you make the right decision

CAUTION: This OEM service and workshop repair manual provides detailed procedures for maintenance, disassembly, reassembly, inspection, adjustment, and diagnostics. It is intended as a comprehensive guide for experienced mechanics. To ensure thorough and accurate repairs that maintain your vehicle’s optimal performance, please read and follow this manual carefully. When replacing parts during any repair work, always use genuine Mazda parts to ensure quality, safety, and reliability.

2014 Mazda Mazda3 (BM/BN) — Specs, Common Problems (With Fixes), Recalls/TSBs & DTC Codes

2014 Mazda Mazda3 (also known as Mazda Axela in some markets) kicked off the 3rd generation with SKYACTIV tech, sharp handling, and excellent fuel economy. Below you’ll find technical specs, owner-reported issues with root causes + fixes, competitors, maintenance schedule, recalls/TSB highlights, and common diagnostic trouble codes.

Technical Specs & Performance (2014 Mazda3)

Platform / Generation: 3rd Gen Mazda3 (BM)
Drivetrain: FWD (AWD not offered on 2014)
Engines (varies by market/trim):
- 2.0L SKYACTIV-G I4 (common output: ~155 hp / ~150 lb-ft)
- 2.5L SKYACTIV-G I4 (common output: ~184 hp / ~185 lb-ft)
Transmissions: 6-speed manual / 6-speed automatic (trim dependent)
0–60 mph (approx.): ~8.0–8.5s (2.0L) | ~6.8–7.3s (2.5L)
EPA Fuel Economy (U.S., varies by body/engine/trans): up to ~29/41 mpg (2.0L sedan manual) and up to ~30/41 mpg (2.0L sedan auto)
Seating: 5 passengers

Top 10 Common Mechanical Issues (Root Cause + Fix)

Front suspension clunk / squeak
Root cause: Strut mount/bushing wear or stick-slip friction in front strut components.
Fix: Inspect struts, mounts, bushings; replace worn parts; perform alignment; verify no loose fasteners.
Steering wheel off-center / pull
Root cause: Alignment out of spec, road crown sensitivity, or improper steering wheel centering after service.
Fix: Perform full 4-wheel alignment; center steering wheel; road-test on flat surface; calibrate if required.
Thermostat / slow warm-up (P0128-type symptoms)
Root cause: Thermostat stuck open or coolant temp sensor drift.
Fix: Test thermostat operation + ECT sensor; replace faulty component; bleed cooling system properly.
Rough idle / hesitation
Root cause: Dirty throttle body, vacuum leak, or MAF/MAP sensor contamination.
Fix: Smoke-test for leaks; clean throttle body; inspect intake boots; clean/replace MAF if needed; reset adaptives.
Misfire under load
Root cause: Worn spark plugs/coil packs or carbon buildup (driving style + fuel quality).
Fix: Replace plugs at interval; swap-test coils; inspect injectors; consider intake cleaning if deposits are confirmed.
Brake noise / vibration
Root cause: Rotor glazing/warping, pad material transfer, or seized slide pins.
Fix: Measure rotor runout; resurface/replace rotors; replace pads; service caliper pins with correct grease.
Fuel smell / leak concern (specific recall-related possibility)
Root cause: Fuel tank inlet/check valve weld issue on affected production batches (recall scenario).
Fix: Verify VIN for recall; dealer inspection; replace tank if required under recall remedy.
A/C not cold enough
Root cause: Low refrigerant due to small leak (O-rings/condenser) or weak compressor control.
Fix: Leak test + UV dye; repair leak; evacuate and recharge to spec; verify pressures and fan operation.
Wheel bearing humming noise
Root cause: Bearing wear from mileage/impact/potholes.
Fix: Confirm with road test + chassis ears; replace affected hub assembly; torque axle nut to spec.
Oil consumption / seepage
Root cause: Aging seals (valve cover) or extended oil change intervals.
Fix: Repair seep points; use correct oil spec; shorten intervals if driving is severe (short trips/cold climate).

Top 10 Common Electrical Issues (Root Cause + Fix)

Backup camera flicker / distorted image
Root cause: Camera internal failure or harness/connector issues (recall applies to certain vehicles).
Fix: Check VIN for recall; inspect wiring; replace camera/harness per recall procedure.
Battery drain (parasitic draw)
Root cause: Module staying awake, aftermarket device, or weak battery health.
Fix: Perform parasitic draw test; isolate circuit; update software if applicable; replace weak battery.
Random warning lights / intermittent electrical glitches
Root cause: Low battery voltage, poor ground, or CAN communication noise.
Fix: Load-test battery; clean grounds; scan all modules; repair any corrosion in connectors.
Infotainment reboot/freezing (Mazda Connect)
Root cause: Software instability or failing CMU (control module).
Fix: Update firmware to latest supported version; check for TSB guidance; replace module if confirmed faulty.
Power window slow or stops
Root cause: Binding window tracks or weak motor/regulator.
Fix: Clean/lube tracks; inspect regulator; replace motor/regulator if current draw is high.
Keyless entry / push-start intermittently fails
Root cause: Weak key fob battery, antenna issue, or BCM logic fault.
Fix: Replace fob battery; re-learn fob; scan BCM for codes; inspect antennas and wiring.
Charging system behavior issues in heavy rain (recall scenario)
Root cause: Belt slip leading PCM to assume charging failure (certain configurations/recall campaign).
Fix: Verify VIN for recall; dealer PCM reprogram; inspect belt tension/condition.
CAN communication faults (U-codes)
Root cause: Voltage dips, poor grounds, water intrusion, or module network conflict.
Fix: Check battery/alternator; inspect grounds; network scan; pinpoint bus fault with wiring diagram.
ABS/traction lights intermittently on
Root cause: Wheel speed sensor contamination/damage or tone ring issue.
Fix: Inspect sensors and tone rings; clean debris; repair wiring; replace faulty sensor.
Airbag/SRS light on
Root cause: Seat connector looseness, clock spring wear, or occupant sensor fault.
Fix: Scan SRS codes; inspect seat wiring/connectors; test clock spring; repair per service manual safety procedures.

Top Competitors

Pros & Cons

Pros 👍	Cons 👎
Sharp handling & sporty feel	Road noise can be noticeable on some tires
Excellent fuel economy (2.0L)	Rear visibility limited (hatch especially)
Strong reliability reputation overall	Infotainment can be buggy without updates
Available 2.5L is quick and fun	Some recall-related items to check by VIN
Comfortable daily driver	Brake noise/vibration complaints on some cars

Maintenance Schedule

Interval	Service Items
Every 5,000–7,500 miles	Oil & filter • Tire rotation • Visual leak check • Brake inspection
Every 15,000 miles	Cabin filter • Suspension/steering inspection • Battery/charging test
Every 30,000 miles	Engine air filter • Throttle body inspection/clean as needed • Brake fluid check
Every 50,000–60,000 miles	Spark plugs (by engine/spec) • Coolant inspection • AT service (as recommended for severe use)
As needed	Wheel alignment • Brake pads/rotors • Battery • Bulbs • A/C service

Top 10 Recalls & TSB Highlights (2014 Mazda3)

Tip: Always confirm using your VIN on official recall portals before booking repairs.

Recall: Rearview camera image may flicker/distort (backup camera visibility risk).
Recall: Parking brake actuator shaft corrosion/binding may prevent proper engagement/disengagement.
Recall: Fuel tank inlet check valve weld may fail causing fuel leak (fire risk).
Recall: Alternator belt slip in heavy rain may trigger charging logic issue (stall/assist loss risk on affected configs).
TSB: Steering wheel off-center condition — alignment/centering procedure updates.
TSB: Clacking/thumping noise from front area at full-lock start-off — repair procedure for front-end noise.
TSB: Front suspension squeak/popping — strut/bushing-related service guidance.
TSB: Steering wheel shimmy/vibration — tire balance method recommendations.
TSB: Steering wheel surface wear/peeling — material/repair guidance.
TSB: Scheduled maintenance service guidance updates for technicians.

DTC Trouble Code List

Engine Control Module (ECM)

DTC	Description
P0300	Random/Multiple Cylinder Misfire Detected
P0301	Cylinder 1 Misfire Detected
P0171	System Too Lean (Bank 1)
P0420	Catalyst System Efficiency Below Threshold (Bank 1)
P0128	Coolant Thermostat (Below Regulating Temp)
P0101	Mass/Volume Air Flow Circuit Range/Performance
P0113	Intake Air Temperature Sensor High Input
P0507	Idle Control System RPM Higher Than Expected
P0442	EVAP System Small Leak Detected
P0455	EVAP System Large Leak Detected

Transmission Control Module (TCM)

DTC	Description
P0700	Transmission Control System Malfunction
P0715	Input/Turbine Speed Sensor Circuit
P0720	Output Speed Sensor Circuit
P0730	Incorrect Gear Ratio
P0740	Torque Converter Clutch Circuit Malfunction
P0750	Shift Solenoid A Malfunction
P0755	Shift Solenoid B Malfunction
P0760	Shift Solenoid C Malfunction
P0776	Pressure Control Solenoid Performance/Stuck
P0868	Transmission Fluid Pressure Low

ABS / ESC (Brake System)

DTC	Description
C0035	Left Front Wheel Speed Sensor
C0040	Right Front Wheel Speed Sensor
C0045	Left Rear Wheel Speed Sensor
C0050	Right Rear Wheel Speed Sensor
C0110	Pump Motor Circuit
C0121	Valve Relay Circuit
C0131	Pressure Sensor Circuit
C0196	Yaw Rate Sensor Circuit
C1095	Hydraulic System Malfunction
C1111	ABS Power Supply/Voltage Issue

SRS Airbag System

DTC	Description
B0001	Driver Frontal Airbag Circuit
B0005	Passenger Frontal Airbag Circuit
B0010	Driver Seat Belt Pretensioner Circuit
B0020	Passenger Seat Belt Pretensioner Circuit
B0028	Side Airbag Sensor Circuit
B0051	Occupant Classification/Detection Fault
B1000	SRS Control Unit Internal Fault
B1018	Airbag Warning Lamp Circuit
B1049	Crash Zone Sensor Fault
B1100	Curtain Airbag Circuit Fault

Body Control / CAN Communication

DTC	Description
U0100	Lost Communication With ECM/PCM
U0121	Lost Communication With ABS Control Module
U0155	Lost Communication With Instrument Panel Cluster
U0401	Invalid Data Received From ECM/PCM
U1000	CAN Communication Line Malfunction
B1318	Low Battery Voltage
B1D01	Door Lock/Unlock Circuit Fault
B1E00	Immobilizer/Key Communication Fault
B2100	Power Window Circuit Fault
B2601	Ignition/Key Switch Input Circuit

Platform / Model Notes (Siblings)

Also known as: Mazda Axela (name used in several markets)
Shared tech family: SKYACTIV engine/trans philosophy overlaps with similar-era Mazda models (e.g., Mazda6 and CX-5 depending on market/powertrain).

Bottom Line

The 2014 Mazda Mazda3 is one of the best-driving compact cars of its era, with standout fuel economy (especially the 2.0L), strong build quality, and a fun chassis.

To buy smart: confirm open recalls by VIN, keep alignment/suspension in check, and update infotainment firmware if you experience glitches.