5 Failure cause and measures
Symptom
Cause
Countermeasures
(1) Engine oil shortage.
Replenish oil
It is indicated that engine
(2)
Engine oil filter clogging.
Change
oil pressure is abnormal,
(3)
Faulty oil pressure switch.
Change
and engine stops.
(4) Loosened or disconnected
Check/Fasten
wiring or connector.
(1) Radiator clogging.
Clean
(2)
Faulty thermostat.
Change
(3)
Faulty coolant temp. switch.
Change
It is indicated that coolant
(4) Low coolant level.
Replenish
temperature is abnormal,
(5)
Belt slippage.
Re-adjust tension
and engine stops.
(6)
Loose wiring, connectors and
Check/retighten
disconnect ion.
(7)
Coolant temp. sensor is
Repair and replace
disconnected.
(1) Oil cooler clogging.
Clean
(2)
Oil filter clogging.
Change
(3)
Faulty discharged air temp.
Disassemble/Check
It is indicated that
switch.
discharge air temperature
(4) Loose wiring connectors and
Check/retighten
is abnormal, and engine
disconnection.
stops.
(5)
Slippage of belt.
Re-adjust tension
(6)
Shortage of compressor oil.
Replenish oil
(7)
Discharge air temp. sensor is
Repair and replace
disconnected.
Engine monitor alarm lamp (l)Engine in trouble
*1
glows.
(l)DPF gets clogged.
Enforced regeneration
Engine trouble lamp an
,
d
operation should be
DPF REGENERATION
performed in the following
REQUIRED lamp light on.
cases.
( Refer to 4.8 clause.)
*
1 After having found the cause with a service tool, it is necessary to take measures .
Therefore, please contact your nearest distributor.
• Contact your nearest dealer if you find it difficult to repair by yourselves.
• Refer to the engine operation manual for trouble concerning the engine.
5-3
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