REF•16 Fault finding
10 Electrical system
Note: For problems associated with the starting system, refer to the
faults listed under “Engine” earlier in this Section.
Battery will not hold a charge for more than a few
days
mm Battery defective internally (Chapter 5A).
mm Battery terminal connections loose or corroded (“Weekly checks”).
mm Fan belt worn or incorrectly adjusted (Chapter 1).
mm Dynamo/alternator not charging at correct output (Chapter 5A).
mm Alternator or voltage regulator faulty (Chapter 5A).
mm Short-circuit causing continual battery drain (Chapters 5A and 12).
Ignition/no-charge warning light remains
illuminated with engine running
mm Fan belt worn, incorrectly adjusted or broken (Chapter 1).
mm Dynamo/alternator brushes worn, sticking, or dirty (Chapter 5A).
mm Dynamo/alternator brush springs weak or broken (Chapter 5A).
mm Internal fault in alternator or voltage regulator (Chapter 5A).
mm Broken, disconnected, or loose wiring in charging circuit (Chapter 5A).
Ignition/no-charge warning light fails to come on
mm Warning light bulb blown (Chapter 12).
mm Broken, disconnected, or loose wiring in warning light circuit
(Chapter 12).
mm Alternator faulty (Chapter 5A).
Lights inoperative
mm Bulb blown (Chapter 12).
mm Corrosion of bulb or bulbholder contacts (Chapter 12).
mm Blown fuse (Chapter 12).
mm Faulty relay (Chapter 12).
mm Broken, loose, or disconnected wiring (Chapter 12).
mm Faulty switch (Chapter 12).
Instrument readings inaccurate or erratic
Instrument readings increase with engine speed
mm Faulty voltage stabiliser (Chapter 12).
Fuel or temperature gauges give no reading
mm Faulty gauge sender unit (Chapters 3, 4A or 4B).
mm Wiring open-circuit (Chapter 12).
mm Faulty gauge (Chapter 12).
Fuel or temperature gauges give continuous maximum
reading
mm Faulty gauge sender unit (Chapters 3, 4A or 4B).
mm Wiring short-circuit (Chapter 12).
mm Faulty gauge (Chapter 12).
Horn inoperative, or unsatisfactory in operation
Horn operates all the time
mm Horn push either earthed or stuck down (Chapter 12).
mm Horn cable-to-horn push earthed (Chapter 12).
Horn fails to operate
mm Blown fuse (Chapter 12).
mm Cable or cable connections loose, broken or disconnected
(Chapter 12).
mm Faulty horn (Chapter 12).
Horn emits intermittent or unsatisfactory sound
mm Cable connections loose (Chapter 12).
mm Horn mountings loose (Chapter 12).
mm Faulty horn (Chapter 12).
Windscreen wipers inoperative, or unsatisfactory
in operation
Wipers fail to operate, or operate very slowly
mm Wiper blades stuck to screen, or linkage seized or binding
(“Weekly checks” and Chapter 12).
mm Blown fuse (Chapter 12).
mm Cable or cable connections loose, broken or disconnected
(Chapter 12).
mm Faulty relay (Chapter 12).
mm Faulty wiper motor (Chapter 12).
Wiper blades sweep over too large or too small an area of
the glass
mm Wiper arms incorrectly positioned on spindles (Chapter 12).
mm Excessive wear of wiper linkage (Chapter 12).
mm Wiper motor or linkage mountings loose or insecure (Chapter 12).
Wiper blades fail to clean the glass effectively
mm Wiper blade rubbers worn or perished (“Weekly checks”).
mm Wiper arm tension springs broken, or arm pivots seized (Chapter 12).
mm Insufficient windscreen washer additive to adequately remove
road film (“Weekly checks” ).
Windscreen washers inoperative, or
unsatisfactory in operation
One or more washer jets inoperative
mm Blocked washer jet (Chapter 1).
mm Disconnected, kinked or restricted fluid hose (Chapter 12).
mm Insufficient fluid in washer reservoir (Chapter 1).
Washer pump fails to operate
mm Broken or disconnected wiring or connections (Chapter 12).
mm Blown fuse (Chapter 12).
mm Faulty washer switch (Chapter 12).
mm Faulty washer pump (Chapter 12).
Washer pump runs for some time before fluid is emitted
from jets
mm Faulty one-way valve in fluid supply hose (Chapter 12).
9 Suspension and steering systems (continued)
mm Worn steering or suspension joints, bushes or components
(Chapters 1 and 10).
mm Worn or broken subframe mountings (Chapter 10).
mm Incorrect vehicle ride height - Hydrolastic suspension models
(Chapter 10).
mm Excessively-hard cornering.
mm Accident damage.
Tyre treads exhibit feathered edges
mm Incorrect toe setting (Chapter 10).
Tyres worn in centre of tread
mm Tyres over-inflated (“Weekly checks” ).
Tyres worn on inside and outside edges
mm Tyres under-inflated (“Weekly checks” ).
Tyres worn unevenly
mm Tyres/wheels out of balance (Chapter 1).
mm Excessive wheel or tyre run-out (Chapter 1).
mm Defective tyre (“Weekly checks” ).
mm Defective shock absorbers - rubber cone suspension models
(Chapter 10).
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