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The Lion and Its History
Peugeot Cars History
    • 1882-18891935-1945
    • 1890-18951948-1959
    • 1896-19011960-1964
    • 1902-19091965-1973
    • 1910-19181974-1984
    • 1919-19281985-1994
    • 1929-19341995-2000
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    • 1889-19091950-2000
    • 1910-1949Recent
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Vehicle Fault Finding
Glossary: Technical Terms
Contributed Columns
    • by Peugeot Pete



VEHICLE FAULT FINDING

ELECTRICAL SYSTEM FAULT FINDING

Battery will not hold a charge for
more than a few days

» Battery defective internally.
» Battery electrolyte level low
    - where applicable (“Weekly checks”).
» Battery terminal connections loose or
    corroded (“Weekly checks”).
» Auxiliary drive belt worn - or incorrectly adjusted.
» Alternator not charging at correct output.
» Alternator or voltage regulator faulty.
» Short-circuit causing continual battery drain.

Ignition/no-charge warning light remains
illuminated with engine running

» Auxiliary drive belt broken, worn,
    or incorrectly adjusted.
» Alternator brushes worn, sticking, or dirty.
» Alternator brush springs weak or broken.
» Internal fault in alternator or voltage regulator.
» Broken, disconnected,
    or loose wiring in charging circuit.

Ignition/no-charge warning light
fails to come on

» Warning light bulb blown (“Weekly checks”).
» Broken, disconnected, or loose wiring
    in warning light circuit.
» Alternator faulty.

Lights inoperative
» Bulb blown.
» Corrosion of bulb or bulb holder contacts.
» Blown fuse.
» Faulty relay.
» Broken, loose, or disconnected wiring.
» Faulty switch.

Instrument readings inaccurate or erratic

Instrument readings increase with engine speed
» Faulty voltage regulator.

Fuel or temperature gauges give no reading
» Faulty gauge sender unit.
» Wiring open-circuit.
» Faulty gauge.

Fuel or temperature gauges
give continuous maximum reading

» Faulty gauge sender unit.
» Wiring short-circuit.
» Faulty gauge.

Horn inoperative, or unsatisfactory in operation

Horn operates all the time
» Horn contacts permanently bridged or
    horn push stuck down.

Horn fails to operate
» Blown fuse.
» Cable or cable connections loose,
    broken or disconnected.
» Faulty horn.

Horn emits intermittent or unsatisfactory sound
» Cable connections loose.
» Horn mountings loose.
» Faulty horn.

Windscreen/tailgate wipers inoperative,
or unsatisfactory in operation


Wipers fail to operate, or operate very slowly
» Wiper blades stuck to screen,
    or linkage seized or binding.
» Blown fuse.
» Cable or cable connections loose,
    broken or disconnected.
» Faulty relay.
» Faulty wiper motor.

Wiper blades sweep over too large or
too small an area of the glass

» Wiper arms incorrectly positioned on spindles.
» Excessive wear of wiper linkage.
» Wiper motor or linkage mountings loose or insecure.

Wiper blades fail to clean the glass effectively
» Wiper blade rubbers worn or perished
    (“Weekly checks”).
» Wiper arm tension springs broken,
    or arm pivots seized.
» Insufficient windscreen washer additive to
    adequately remove road film (“Weekly checks”).

 
Windscreen/tailgate washers inoperative,
or unsatisfactory in operation


One or more washer jets inoperative
» Blocked washer jet.
» Disconnected, kinked or restricted fluid hose.
» Insufficient fluid in washer reservoir (“Weekly checks”).

Washer pump fails to operate
» Broken or disconnected wiring or connections.
» Blown fuse.
» Faulty washer switch.
» Faulty washer pump.

Washer pump runs for some time
before fluid is emitted from jets

» Faulty one-way valve in fluid supply hose.

Electric windows inoperative,
or unsatisfactory in operation


Window glass will only move in one direction
» Faulty switch.

Window glass slow to move
» Regulator seized or damaged,
    or in need of lubrication.
» Door internal components or
    trim fouling regulator.
» Faulty motor.

Window glass fails to move
» Blown fuse.
» Faulty relay.
» Broken or disconnected wiring
    or connections.
» Faulty motor.

Central locking system inoperative,
or unsatisfactory in operation


Complete system failure
» Blown fuse.
» Faulty relay.
» Broken or disconnected wiring
    or connections.

Latch locks but will not unlock,
or unlocks but will not lock

» Faulty switch.
» Broken or disconnected latch operating rods
    or levers.
» Faulty relay.

One solenoid/motor fails to operate
» Broken or disconnected wiring or connections.
» Faulty solenoid/motor.
» Broken, binding or disconnected
    latch operating rods or levers.
» Fault in door latch.

Back to Car Fault Finding INDEX
 


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