Electrical system faults (Mondeo 1 and 2)

Note: Malfunctions related to the starting system are listed under the heading "Engine" (see above in this section).

The battery runs out in a few days

• Internal battery failure (Chapter 5).
• Low electrolyte level (Chapter 1).
• Loose or corroded battery terminal clamps (Chapter 5).
• Worn or improperly installed accessory drive belt (Chapter 1).
• No charging from the generator with its normal output parameters (Chapter 5).
• Generator or voltage regulator failure (Chapter 5).
• Short circuit causing battery discharge (Chapters 5 and 12).

Ignition/Battery Discharge Indicator Does Not Go Out When Starting the Engine

• Worn or improperly installed accessory drive belt (Chapter 1).
• Worn, stuck or dirty generator brushes (Chapter 5).
• Broken or weakened generator brush springs (Chapter 5).
• Internal fault in the generator or voltage regulator (Chapter 5).
• Open, disconnected or loose contacts in the charging circuit (Chapter 5).

Ignition/Battery Discharge Indicator Does Not Light When I Turn On the Ignition

• The indicator lamp has burned out (Chapter 12).
• Open, disconnected or loose contact in the indicator lamp circuit (Chapters 5 and 12).
• Generator failure (Chapter 5).

The lighting fixtures are not working

• The pump burned out (Chapter 12).
• Corrosion of the contacts of the bulb or socket (Chapter 12).
• The fuse has blown (Chapter 12).
• Relay failure (Chapter 12).
• Break, disconnection or loose contact in the circuit (Chapter 12).
• The switch is faulty (Chapter 12).

Inaccuracy or instability of instrument readings

Instrument readings increase with increasing engine speed

• Voltage regulator failure (Chapter 12).

Fuel or temperature gauges do not read

• Pointer Sensor Malfunction (Chapters 3, 4),
• The wiring circuit is open (Chapter 12).
• Pointer malfunction (Chapter 12).

Fuel or temperature gauges constantly show maximum readings

• Pointer Sensor Malfunction (Chapters 3, 4).
• Short circuit in electrical wiring (Chapter 12).
• Pointer malfunction (Chapter 12).

Failure or poor performance of the horn

The sound signal does not work

• The fuse has blown (Chapter 12).
• A broken, loose or disconnected wire or wire connections (Chapter 12).
• Sound signal malfunction (Chapter 12).

Pulsation or intermittent sound from the horn

• Loose wire connections (Chapter 12).
• Loosening of the horn mount (Chapter 12).
• Sound signal malfunction (Chapter 12).

The sound signal does not turn off

• Short to ground or stuck horn button (Chapter 12).
• Short circuit to ground of the button wire (Chapter 12).

Windscreen wipers fail or do not operate satisfactorily

Windscreen wipers do not work or work very slowly

• Wiper blades sticking to the glass or linkage jamming (Chapters 1 and 12).
• The fuse has blown (Chapter 12).
• A broken, loose or disconnected wire or wire connections (Chapter 12).
• Relay failure (Chapter 12).
• Windscreen wiper motor malfunction (Chapter 12).

The wiper blades are moving over too large or too small an area of the glass

• Incorrect installation of windshield wiper arms on shafts (Chapter 1).
• Excessive wear of the wiper linkage (Chapter 12).
• Loose windshield wiper motor or linkage (Chapter 12).

Windscreen wipers are not working effectively

• Wear or damage to the rubber wiper blades (Chapter 1).
• Breakage of the pressure springs or jamming of the swing arm hinges (Chapter 12).
• Insufficient content of cleaning additive in the washer fluid for effective glass cleaning (Chapter 1).

Washer failure or poor performance

One or more washer nozzles are not working

• Contamination of injector holes (Chapter 1).
• Disconnection or kinking of the hose (Chapter 1).
• Not enough fluid in the washer reservoir (Chapter 1).

The washer pump does not work

• The electrical wiring is broken (Chapter 12).
• The fuse has blown (Chapter 12).
• Washer switch malfunction (Chapter 12).
• Washer pump malfunction (Chapter 12).

Time delay between the start of the washer pump operation and the start of spraying liquid from the nozzles

• Malfunction of the check valve in the washer hose (Chapter 12).

Electric window failure or poor performance

The glass moves in one direction only

• Switch malfunction (Chapter 12).

The glass moves slowly

• Incorrect installation of glass guides (Chapter 11).
• Damage, sticking or lack of lubrication of the window lift drive (Chapter 11).
• Contamination of the drive or internal components of the door (Chapter 11).
• Engine failure (Chapter 12).

The glass does not move

• Incorrect installation of glass guides (Chapter 11).
• The fuse has blown (Chapter 12).
• Turntable malfunction (Chapter 12).
• Electrical wiring fault (Chapter 12).
• Engine failure (Chapter 12).

Failure or poor performance of the central locking system

The system is completely inoperative

• The fuse has blown (Chapter 12).
• Relay failure (Chapter 12).
• Electrical wiring fault (Chapter 12).

Locks close but do not open or open but do not close

• Main switch malfunction (Chapter 12).
• Breakage or separation of the levers or rods of the lever transmission of locks (Chapter 11).
• Relay failure (Chapter 12).

The motor of one of the locks does not work

• Electrical wiring fault (Chapter 12).
• Engine failure (Chapter 11).
• Breakage, jamming or disconnection of the levers or rods of the lever transmission of locks (Chapter 11).
• Door lock malfunction (Chapter 11).

(The original source of the publication is on the website: www.FordBook.ru)