Fuel injection amount learning proc-
ess (diesel-powered vehicles)
E00627900043
To
keep exhaust emissions and engine noise low,
the engine very occasionally performs a learning
process for the fuel injection amount.
The engine sounds slightly different from usual
while the learning process is taking place. The
change in the engine sound does not indicate a fault.
Diesel particulate filter (DPF)*
E00619800199
The
diesel particulate filter (DPF) is a device that
captures most of the particulate matter (PM) in the
exhaust emissions of the diesel engine. The DPF au-
tomatically burns away trapped PM during vehicle
operation. Under certain driving conditions, howev-
er, the DPF is not able to burn away all of the trap-
ped PM and, as a result, an excessive amount of
PM accumulates inside it.
WARNING
l
The DPF reaches very high temperatures.
Do
not park your vehicle in areas where
combustible materials such as dry grass
or leaves can come in contact with a hot
exhaust system since a fire could occur.
CAUTION
l
Do not use any type of fuel or engine oil
that is not specified for your vehicle. Al-
so, do not use any moisture-removing
agent or other fuel additive. Such substan-
ces could have a detrimental effect on the
DPF.
Refer to “Fuel selection” on page 02 and
“Engine oil” on page 8-04.
NOTE
l
To
minimize the likelihood of excessive ac-
cumulation of PM, try to avoid driving for
long periods at low speeds and repeatedly
driving short distances.
l
The
engine sounds slightly different than usu-
al while the DPF automatically burns away
trapped PM. The change in the engine sound
does not indicate a fault.
DPF warning display
Type 1
Type 2
The DPF warning display illuminates in the event
of an abnormality in the DPF system.
If the DPF warning display illumi-
nates during vehicle operation
Steady
illumination of the DPF warning display
shows that the DPF has not been able to burn away
all of the trapped PM and that, as a result, an exces-
sive amount of PM has accumulated inside it. To en-
able the DPF to burn away the PM, try to drive the
vehicle as follows:
l
With the bar graph of engine coolant temper-
ature display stabilized in roughly the middle
of the scale, drive for about 20 minutes at a
speed of at least 40 km/h (25 mph).
Starting and driving
4-15
4
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