Troubleshooting the electrical system (Mazda Capella GC)

The battery doesn't hold a charge for more than a few days

• The battery is internally faulty (Section 5)
• Low electrolyte level (Section 1)
• The battery terminals are loose or corroded (Section 1)
• The generator does not produce the required current (Section 5)
• The generator or voltage regulator is faulty (Section 5)

The ignition indicator light comes on while driving

• The generator brushes are worn, jammed or dirty
• Weak or damaged generator brush springs
• Internal damage in the generator or voltage regulator (Section 5)
• The wiring in the charging circuit is damaged or open (Section 12)

The ignition switch indicator light does not come on

• The indicator lamp has burned out (Section 12)
• The wiring in the lamp circuit is damaged or open
• The generator is faulty (Section 5)

The headlights and turn signals do not work

• The lamp burned out (Section 12)
• Corrosion of the lamp holder or contacts (Section 12)
• The fuse has blown (Section 12)
• Faulty relay (Section 12)
• The electrical wiring is damaged or open (Section 12)
• Faulty switch (Section 12)

The instrument readings are inaccurate

The instrument readings increase with increasing engine speed

• Faulty voltage regulator (Section 5)

The fuel quantity or temperature indicator shows

• The pointer sensor is faulty (Sections 3 and 4)
• The indicator wiring is open (Section 12)
• Faulty pointer (Section 12)

The fuel or temperature gauge constantly shows the maximum value

• The pointer sensor is faulty (Sections 3 and 4)
• Short circuit (Section 12)
• Faulty pointer (Section 12)

The sound signal does not work or does not work correctly

The sound signal is constantly emitted

• The horn button is shorted to ground or stuck in the pressed position (Section 12)
• The contact of the horn cable with the key is shorted to ground (Section 12)

The sound signal does not work

• The fuse has blown (Section 12)
• The cable or its connections are loose, damaged or disconnected (Section 12)
• The sound signal is faulty (Section 12)

The horn produces an intermittent or unsatisfactory sound

• The cable connections are loose (Section 12)
• The horn fasteners are loose (Section 12)
• The sound signal is faulty (Section 12)

Windscreen wipers do not work or work poorly

Windshield wipers do not work or work very slowly

• The wiper blades are stuck on the glass or the rod is jammed (Sections 1 and 12)
• The fuse has blown (Section 12)
• The cable or its connections are loose, damaged or disconnected (Section 12)
• Faulty relay (Section 12)
• The windshield wiper motor is faulty (Section 12)

The wiper blades cover too much or too little of the glass

• The wiper arms are incorrectly positioned on the axles
• Excessive wear of the wiper linkage (Section 12)
• The windshield wiper motor or linkage mounts are loose

The windshield wipers are not able to clean the glass effectively

• The rubber of the brushes is worn out or damaged (Section 1)
• The windshield wiper arm springs are damaged or the arm hinges are jammed (Section 12)
• The concentration of the active substance in the washer fluid is not sufficient to remove plaque from the windshield (Section 1)

The windshield washers do not work or work poorly

One or more washer jets are not working

[The primary source is the website: Mazbook]

• The washer nozzle is blocked
• The hose is disconnected, pinched or clogged
• Not enough fluid in the washer reservoir (Section 1)

The washer pump is not working

• Electrical wiring or connectors are damaged or open (Section 12)
• The fuse has blown (Section 12)
• Defective washer switch
• The washer pump is faulty (Section 12)

Liquid is ejected from the jets some time after the pump is turned on

• The one-way valve in the supply hose is faulty

Electric windows do not work or work poorly

The glass moves in only one direction

• A faulty switch

The glass moves slowly

• The glass guides are not installed correctly (Section 11)
• The regulator is damaged, stuck, or needs lubrication (Section 11)
• Internal door components or trim are interfering with the movement of the adjuster (Section 11)
• The motor is faulty (Section 11)

The glass doesn't move

• The glass guides are not installed correctly (Section 11)
• The fuse has blown (Section 12)
• Relay faulty (Section 12)
• Electrical wiring or connectors are damaged or open (Section 12)
• The motor is faulty (Section 11)

The central locking does not work or works poorly

The system is not working

• The fuse has blown (Section 12)
• Relay faulty (Section 12)
• Electrical wiring or connectors are damaged or open (Section 12)

The lock bolt closes but does not open, or vice versa

• The master switch is faulty (Section 12)
• The valve rods or levers are damaged or disconnected
• Relay faulty (Section 12)

One of the motors is not working

• Electrical wiring or connectors are damaged or open (Section 12)
• The motor is faulty (Section 12)
• The valve rods or levers are damaged or disconnected
• The valve is damaged (Section 11)