Symptoms
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Possible Causes
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Remedy
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Coolant leakage
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•
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From the bleed hole of the water pump
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Visually check
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•
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Check leaks after about ten-minute warming up.
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•
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If coolant still leaks, replace a water pump.
|
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•
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If leakage stops, reuse the water pump (Do not replace the pump
with a new one).
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|
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•
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Check the tightening of the water pump mounting bolts.
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•
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Retighten the mounting bolts.
|
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•
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Check damage of gaskets or inflow of dust.
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•
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Replace the gasket and clean dust off.
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•
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From outer surface of water pump
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•
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Check the material or any cracks of the water pump.
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•
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Poor material. If any crack found, replace the water pump.
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|
Noise
|
|
Inspection with a stethoscope
|
•
|
After starting the engine, check noise with a stethoscope.
|
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•
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If there is no noise, reuse the water pump (do not replace it).
|
|
•
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If there is any noise from the water pump, remove the drive
belt and recheck.
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Inspection after removing a drive belt
|
•
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After removing a water pump and a drive belt, check noise again.
|
|
•
|
If there is noise, reuse the water pump. Check other drive line
parts.
|
|
•
|
If there is no noise, replace the water pump with a new one.
|
|
Inspection after removing a water pump
|
•
|
After removing a water pump and a drive belt, check noise again.
|
|
•
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If there is any interference between them, replace the water
pump with a new one.
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|
Overheating
|
|
Loosened impeller
|
•
|
Corrosion of the impeller wing
|
|
•
|
Poor coolant quality / Maintenance check
|
|
•
|
Impeller seperation from the shaft
|
|
•
|
Replace the water pump.
|
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Other information:
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the
vehicle is being driven in severe conditions,
more frequent oil and filter
changes are required.
Drive belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil
saturation and replace if necessary...
Check LKA system
If there is a problem with the system
a message will appear for a few seconds.
If the problem continues the
LKA system failure indicator will illuminate.
LKA system failure indicator
The LKA system failure
indicator (yellow) will illuminate
if the LKA system
is not working properly...