Document ID: EPA-HQ-OAR-2004-0017-0052
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2005-01-25T05:00Z

Alan
Stout
EPA­
OAR,
OTAQ,
ASD
Received
Date:
12/
13/
2004
09:
55:
04
AM
To:
"
HARADA,
HIDEMI"
<
hi­
harada@
mail.
nissan.
co.
jp>
cc:
????/
K40??­
1?
\(
E­
mail\)
<
k­
kojima@
nikkoh.
co.
jp>
Subject:
Re:
FW:
Nissan)
Several
questions
on
diagnostic
requirements
in
2007MY
Nonroad
LSI
Regulations
Mr.
Harada,
I
had
thought
you
wanted
to
talk
about
the
diagnostic
issues
at
our
February
meeting.
I
was
able
to
check
in
with
our
engine­
diagnostics
expert
to
work
toward
a
response
to
the
issues
you
raised.

1.
Control
Area
Networks
You
should
note
the
later
part
of
1048.115(
b)
that
specifically
allows
for
broadcasting
to
a
remote
scan
tool.
I
will
try
to
clarify
this
provision
in
our
technical
amendments
to
state
that
torque,
or
other
parameters,
may
be
broadcast
to
a
remote
scan
too.

2.
ISO
Trouble
Codes
1048.110(
g)
considers
the
need
to
use
codes
that
are
different
than
ISO.
Adapting
codes
for
alternative
fuels
would
clearly
be
a
case
where
you
would
need
to
revise
the
codes
for
your
situation.
We
would
be
interested
in
standardizing
codes
across
the
industry
where
possible,
but
we
are
aware
that
there
may
be
a
lot
of
information
that
is
manufacturer­
specific.
You
need
to
request
our
approval
for
variations
from
the
ISO,
which
will
allow
us
then
to
evaluate
whether
it
might
be
possible
to
move
in
the
direction
of
normalizing
codes
for
common
configurations.

3.
MIL
Language
We
have
approved
the
use
of
your
suggested
icon
for
a
check­
engine
message
for
light­
duty
motor
vehicles,
so
we
readily
approve
the
use
of
this
also
for
your
nonroad
engines.

I
hope
this
clears
things
up.
Let
me
know
if
you
have
further
questions.

Alan
Stout
­­­­­
Original
Message­­­­­
From:
HARADA,
HIDEMI
Sent:
Thursday,
December
02,
2004
9:
48
PM
To:
EPA/
MrAlanStout
(
E­
mail)
Cc:
KAWANO,
MASAHIRO;
'
TANAKA_
SHUJI';
SUZUKI_
NOBUYUKI;
KAWAGUCHI_
RYUHEI;
'
K30??';
KOSAKA_
MASAHIKO
Subject:
Nissan)
Several
questions
on
diagnostic
requirements
in
2007MY
Nonroad
LSI
Regulations
Dear
Mr.
Alan
Stout,
EPA
Ann
Arbor
We
have
several
inquiries
and
would
like
to
know
your
opinion
or
comment,
etc.
Your
reply
is
highly
appreciated
for
our
engine
system
development
to
meet
2007MY
Regulations.
This
time,
our
inquiries
are
related
to
diagnostic
requirements
as
follows.
And,
we
would
like
to
talk
about
this
when
we
visit
EPA
next
year.

Q1.
Control
Area
Networks
Paragraph
1048.115
(
b)
says
"
Electronically
controlled
engines
must
broadcast
their
speed
and
output
shaft
torque
on
their
controller
area
networks."
But
due
to
Nissan's
engine
control
module
structure,
it
is
difficult
to
broadcast
them
by
controller
area
networks
(
CAN).
In
place
of
CAN,
we
can
broadcast
the
similar
output
which
can
be
monitored
by
GST.
We
believe
this
similar
output
is
eligible
to
the
requirement.
(
We
will
show
EPA
detailed
explanation
later.)
We
would
like
to
know
EPA's
opinion.

Q2.
ISO
Trouble
Codes
Paragraph
1048.110
describes
engines
diagnose
malfunction,
and
(
g)
of
the
paragraph
explains
specific
formats,
codes,
and
connections.
But
according
to
our
understanding,
the
ISO
takes
only
gasoline
fueled
engines
into
account.
For
dual
fuel
engines
(
for
example,
gasoline
and
LPG),
independent
codes
are
needed
in
order
to
identify
by
which
fuel
the
malfunction
has
happened.
So
we
think
independent
codes
for
gasoline
and
LPG
are
needed.
We
can
show
EPA
our
specific
idea
later.
We
would
like
to
know
how
EPA
thinks
about
this
issue.

Q3.
MIL
Language
Paragraph
1048.110
(
b)
explains
the
specific
proposal
for
MIL.
It
says
"
it
must
display
"
Check
Engine,"
"
Service
Engine
Soon"
or
a
similar
message
that
we
approve."
One
customer
asks
us
it
would
like
to
use
"
Check"
with
engine
illustration
that
it
has
already
used.
We
would
like
to
know
EPA's
judgment.
(
Please
refer
to
the
attached
figure.)

Best
Regards,
H.
Harada
Unit
Planning
Section
Engineering
Department
Industrial
Machinery
Division
Nissan
Motor
Co.,
Ltd.
TEL
:
+
81­
46­
252­
3243
FAX
:
+
81­
46­
252­
3313
E­
mail
:
hi­
harada@
mail.
nissan.
co.
jp