Driving
Y
our Mazda
5-18
Automatic
T
ransmission
Your vehicle is equipped with either
a four-speed overdrive transmission
(4R44E)
or a five-speed overdrive
trans
-
mission (5R55E). All 2.5L and 3.0L
engines use the 4R44E transmission,
while all 4.0L engines use the 5R55E
transmission. Both transmission types
have a lock-up torque converter. Trans-
mission operation is controlled by the
Powertrain
Control Module (PCM).
The
P
C
M w
il
l a
utomaticall
y a
djus
t t
rans-
mission
o
peration
t
o m
ak
e u
p f
o
r v
arying
conditions.
S
evera
l s
ensor
s l
ocate
d o
n t
he
engine and transmission such as throttle
position,
e
ngin
e s
peed
, v
ehicl
e s
pee
d a
nd
transmission
t
emperatur
e a
r
e u
se
d b
y
t
he
PCM to shift the transmission into a
higher to lower gear when required for
the best performance and fuel economy.
For example, you may notice that the
transmission
will upshift to a higher gear
more quickly when the vehicle has not
reached normal operating temperature.
The
P
C
M a
ls
o c
ontrol
s t
he
t
ransmission’s
torque converter clutch to further raise
vehicle performance and fuel economy.
The torque converter
clutch will engage
when the transmission operating tem-
perature
a
n
d o
the
r c
ondition
s d
etermined
by
the PCM have been met.
Engagement
of
the clutch may be noted as a
decrease
in engine speed.
To
h
elp
i
n t
roubleshooting
, t
h
e P
C
M c
on-
tinually performs self-tests on the elec-
tronic control system and if any faults
are detected, will store them in memory.
The
T
ransmissio
n C
ontro
l I
ndicator
L
ight
(TCIL), which is located on the instru-
ment cluster, may flash steadily if a
mal-function has been detected. If the
TCIL is flashing, contact your Autho-
rized Mazda Dealer as soon as possible.
If
t
his
c
onditio
n p
ersists
, d
amag
e t
o y
our
transmission could occur.
To Next Page
Loading...
