2003 Mazda Protege Service and Repair Manual

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Covers all 2003 Protege trims — DX Sedan 4-Door, ES Sedan 4-Door, SE Sedan 4-Door +2 more ·
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2003 Mazda Protege service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • DX Sedan 4-Door
  • ES Sedan 4-Door
  • SE Sedan 4-Door
  • Mazdaspeed Sedan 4-Door
  • LX Sedan 4-Door

Engines covered

  • 2.0L 2000CC l4 GAS DOHC Naturally Aspirated
  • 1.6L 1589CC l4 GAS DOHC Naturally Aspirated
  • 2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #09E02500011/05/2009Component: EXTERIOR LIGHTING:HEADLIGHTS

DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONF

Consequence

DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.

Remedy

DOPE, INC. WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S

NHTSA #09E01200007/04/2009Component: EXTERIOR LIGHTING

SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONF

Consequence

DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.

Remedy

SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S

TSB #11032103

This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all ma

TSB #11026904

A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is

TSB #11017699

A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is

TSB #11006987

In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by Federal, and State laws. It is the dealers responsibility to com

TSB #11005671

Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manu

TSB #11003398

Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manu

TSB #10232299

Speedometer replacement procedure

TSB #10226814

Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow th

Showing the 8 most recent of 68 technical service bulletins on file with NHTSA.

20060316Component: SEAT BELTSCrash reported2 injured

I WAS INVOLVED IN AN AUTO ACCIDENT WHILE DRIVING AN '03 MAZDA PROTEGE5. UPON IMPACT MY SEAT BELT FAILED. *JB

20070122Component: SUSPENSION:FRONT:CONTROL ARM:LOWER BALL JOINTCrash reported1 injured

TL* - THE CONTACT OWNS A 2003 MAZDA PROTG. THE CONTACT WAS DRIVING 15 MPH WHEN THE PASSENGER SIDE LOWER CONTROL ARM SPLIT IN HALF AND THE STRUT WENT THROUGH THE FENDER ALONG WITH THE UPPER CONTROL A

20060206Component: AIR BAGSCrash reported1 injured

I WAS TAKING A CORNER ON HWY 36 AND HIT GRAVEL ON THE SIDE OF THE ROAD. THE CAR WENT OFF THE ROAD DID A NOSE DIVE INTO A DITCH FLIP FORWARD END OVER END, SLID AND ROLLED TWICE. NON OF THE AIR BAGS DE

20050422Component: AIR BAGS:FRONTALCrash reported1 injured

DRIVERS FRONTAL IMPACT AT 45 MPH AIRBAGS DID NOT DEPLOY. MY CAR 2003 MAZDA PROTEGE 5 WAS TOTALED. NOW I AM HAVING NECK AND BACK PAIN WHEN I USE MY CAR. I CALLED MAZDA THEY TOLD ME TO USE MY INSURAN

20040529Component: ENGINE AND ENGINE COOLING:ENGINECrash reported1 injured

WHILE APPROACHING A STOP SIGN, THE ENGINE STALLED CAUSING THE BRAKES AND POWER STEERING NOT TO WORK. I WAS UNABLE TO STOP AT THE STOP SIGN AND RAN INTO THE EMBANKMENT ON THE OTHER SIDE. THIS CAR HAS

Showing the 5 most serious of 145 complaints filed with NHTSA.

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