engine MAZDA MODEL CX-30 2019 (in English) Service Manual

2. When the accelerator pedal is
depressed or the RES switch is
operated while the vehicle is kept
stopped by the MRCC with Stop &
Go function/CTS, the engine
automatically restarts. The engine
restarts automatically when the
accelerator pedal is depressed with
the selector lever in the D/M
position (not in second gear fixed
mode).
(When the vehicle is stopped by the
AUTOHOLD function)
1. When the brake pedal is depressed
while the vehicle is being driven
(except for driving in the R or M
position second gear fixed mode)
and the vehicle is brought to a stop,
the i-stop function will operate and
it continues to operate even if the
brake is released.
2. The engine restarts automatically
when the accelerator pedal is
depressed with the selector lever in
the D/M position (not in second
gear fixed mode).
3. If the selector lever is in the N or P
position, the engine does not
restart when the brake pedal is
released. The engine restarts when
the brake pedal is depressed again
or the selector lever is shifted to the
D, M (not in second gear fixed
mode) or the R position. (For the
purposes of safety, always keep the
brake pedal depressed when
shifting the selector lever while
engine idling is stopped.)
Engine idle stopping and restarting
while driving (With M Hybrid)
(When not using MRCC with Stop &
Go function/CTS)
1. Engine idling stops when the
vehicle speed is about 20 km/h (12
mph) or slower after depressing the
brake pedal while driving the
vehicle (in D position).
2. The engine restarts automatically
after releasing the brake pedal with
the selector lever in the D position.
(When using MRCC with Stop & Go
function/CTS)
1. Engine idling stops when the
vehicle speed is about 20 km/h (12
mph) or slower after decelerating
the vehicle a certain amount or
more while in headway control
using the MRCC with Stop & Go
function/CTS.
2. If it is necessary to accelerate while
in headway control using the MRCC
with Stop & Go function/CTS, the
engine restarts automatically.
Operation conditions
Under the following conditions, engine
idling stops and the i-stop indicator
light (green) turns on.
x(SKYACTIV-G 2.0,
SKYACTIV-G 2.5,
SKYACTIV-X 2.0)
The engine is warmed up.
x(SKYACTIV-D 1.8)
The engine is not cold.
xThe engine has been started and the
vehicle is driven for a certain period.
xThe engine is started with the bonnet
closed.
xAll doors, liftgate, and bonnet are
closed.
xThe driver's seat belt is fastened.xThe air conditioner is not operating
with the airflow mode in the
position.xThe temperature setting dial of the
air conditioner is in a position other
than maximum heating or maximum
cooling (A/C ON) position.
x(Automatic air-conditioning)
The vehicle's interior temperature
and the set temperature for the air
conditioner are nearly the same.
When Driving
Start/Stop Engine
4-13

xThe i-stop warning light (amber) is
not turned on/flashing.
xThe keyless entry & push button start
system functions are normal.
x(With M Hybrid)
xThe temperature and charge
condition of the M Hybrid battery
is good.
xThe Integrated Starter-Generator
(ISG) is in good condition.
x(Without M Hybrid)
xThe brake vacuum is
sufficiently
high.
xThe battery is in good condition.x(Manual transmission)
While vehicle is stopped
xThe vehicle speed is 3 km/h (1.8
mph) or less.
xThe shift lever is in the neutral
position.
xThe clutch pedal is not depressed.
While driving (With M Hybrid)
xThe vehicle speed is 17 km/h (11
mph) or less.
xThe gear shift indicator (GSI)
displays N.
xThe brake pedal is depressed.xThe shift lever is in the neutral
position.
xThe clutch pedal is not depressed.xThe steering wheel is almost in the
straight-ahead position (idling may
not stop even with the steering
wheel in the straight-ahead
position if force is applied to the
steering wheel. Release the force
applied to the steering wheel to
stop engine idling).
xThe vehicle is not driven on a
slope.
x(Automatic transmission)
While vehicle is stopped
xThe selector lever is in the D or M
position (not in second gear fixed
mode).
xThe automatic transmission
fluid
has warmed up sufficiently.
xThe automatic transmission
fluid
temperature is not abnormally
high.
xThe steering wheel is almost in the
straight-ahead position (idling may
not stop even with the steering
wheel in the straight-ahead
position if force is applied to the
steering wheel. Release the force
applied to the steering wheel to
stop engine idling).
xThe vehicle is stopped by
depressing the brake pedal.
xThe vehicle is not on a steep slope.xThe vehicle is not stopped
suddenly.
While driving (With M Hybrid)
xThe selector lever is in the D
position (not in second gear fixed
mode).
xThe vehicle is driven at a vehicle
speed of about 20 km/h (12 mph)
or faster after engine idling stops
while the vehicle is stopped.
xThe vehicle is driven at a vehicle
speed of about 30 km/h (19 mph)
or faster after engine idling stops
while driving.
xThe vehicle is not driven in sport
mode.
xThe automatic transmission fluid
has warmed up sufficiently.
xThe automatic transmission fluid
temperature is not abnormally
high.
xThe steering wheel is almost in the
straight-ahead position (idling may
not stop even with the steering
wheel in the straight-ahead
When Driving
Start/Stop Engine
4-14

position if force is applied to the
steering wheel. Release the force
applied to the steering wheel to
stop engine idling).
xThe vehicle is stopped by
depressing the brake pedal.
xThe vehicle is not driven on a
slope.
xThe vehicle is not stopped
suddenly.
NOTE
Under the following conditions, a
period of time is required to stop
engine idling
xThe battery power is depleted for
some reasons such as the vehicle has
not been driven for a long period.
xThe ambient temperature is high or
low.
xAfter the battery terminals are
disconnected for some reasons such
as for battery replacement.
x(SKYACTIV-D 1.8)
After PM removal is performed by
the diesel particulate filter.
Engine does not restart
If the following operations are
performed while the idling is stopped,
the engine will not restart for safety
reasons. In such cases, start the engine
using the normal method.
x(European model)
xThe bonnet is opened.xThe driver's seat belt is unfastened
and the driver's door is opened.
x(With M Hybrid)
xAutomatic transmission
The driver's seat belt is unfastened
and the driver's door is opened.
xManual transmission
The driver's door is opened.
Engine-stop period is short or time
until next engine idle stop is long
xThe ambient temperature is high or
low.
xThe battery power is depleted.xPower consumption by the vehicle's
electrical parts is high.
Engine restarts automatically while
engine idling is stopped
Under the following conditions, the
engine restarts automatically.
xThe i-stop OFF switch is pressed until
the beep sounds.
xThe air conditioner is operated with
the airflow mode in the
position.xThe temperature setting dial of the
air conditioner is in the maximum
heating or maximum cooling (A/C
ON) position.
x(Automatic air-conditioning)
The cabin temperature is largely
different from the set temperature of
the air conditioner.
xThe brakes are released slightly on a
slope and the vehicle begins to
move.
xTwo minutes have elapsed since the
idling was stopped.
xThe battery power is depleted.x(Automatic transmission)
Engine idling is stopped while the
vehicle is stopped
xThe accelerator pedal is depressed
with the selector lever in the D or
M (not in second gear fixed mode)
position.
xThe selector lever is shifted to the R
position.
xThe selector lever is shifted from N
or P position to D or M (not in
second gear fixed mode) position.
When Driving
Start/Stop Engine
4-15

xThe steering wheel is operated
with the selector lever in the D or
M (not in second gear fixed mode)
position.
xThe selector lever is in the M
position and the second gear fixed
mode is selected.
xThe steering wheel is operated.
Engine idling is stopped while
driving
xThe selector lever is in a position
other than the D position.
xThe accelerator pedal is depressed.xSport mode is selected.xThe steering wheel is operated.x(Manual transmission (With M
Hybrid))
xThe shift lever is shifted to the R
position.
xThe brake pedal is depressed with
the shift lever in the neutral
position.
xThe accelerator pedal is depressed.xThe shift lever is shifted to a
position other than neutral with
the brake pedal released and the
clutch pedal depressed.
xThe driver's seat belt is unfastened.
x(Except European model)
x(Manual transmission)
With the shift lever in the neutral
position, the driver's seat belt is
unfastened, the driver's door is
opened, or the bonnet is opened.
x(Automatic transmission)
With the selector lever in the P or
N position, or the D/M range, the
driver's seat belt is unfastened, the
driver's door is opened, or the
bonnet is opened.
Selector lever is operated while
engine idling is stopped and the
vehicle is stopped (automatic
transmission)
If the selector lever is shifted from D or
M (not in second gear fixed mode)
position to N or P position while
engine idling is stopped, the engine
does not restart even when the brake
pedal is released. The engine will
restart if the brake pedal is depressed
again or the selector lever is shifted to
the D, M (not in second gear fixed
mode), or R position. (For the
purposes of safety, always keep the
brake pedal depressed when shifting
the selector lever.)
If the selector lever is shifted from the
D or M (not in second gear fixed
mode) to the N or P position, and the
driver's seat belt is unfastened or the
driver's door is opened, the engine
restarts.
Battery terminals are disconnected
Engine idling may not stop right after
the battery terminals are disconnected.
In addition, if the battery is replaced,
the i-stop functions must be verified.
Consult an expert repairer (we
recommend an Authorised Mazda
Repairer).
▼i-stop OFF Switch
When pressing the switch, the i-stop
function stops and the i-stop OFF
switch indicator light turns on. If the
switch is pressed again, the i-stop
function becomes operational and the
When Driving
Start/Stop Engine
4-16

i-stop OFF switch indicator light turns
off.
1. Indicator light
NOTE
If the engine is stopped with the i-stop
function stopped, the i-stop function
becomes operational again when the
engine is started the next time.
▼Vehicle Roll Prevention Function
(Automatic transmission)
Vehicles with the i-stop function are
equipped with a vehicle roll prevention
function. This function prevents the
vehicle from rolling, such as when
releasing the brake pedal while on a
slope under the following conditions:
xWhile engine idling is stopped
(prevents the vehicle from rolling
back)
xWhen the engine restarts after
releasing the brake pedal (prevents
the vehicle's sudden movement due
to vehicle creep), sudden movement
of the vehicle is prevented by
controlling the brakes.
1. Release foot from brake pedal
2. Vehicle brake force maintained
3. Engine restarted
4. Acceleration
When Driving
Start/Stop Engine
4-17

WARNING
Do not rely completely on the vehicle
roll prevention function.
¾The vehicle roll prevention function
is a supplementary function which
operates for a maximum of 2
seconds after releasing the brake
pedal and accelerating the vehicle
from an engine idling stop condition.
Over reliance on the system may
result in an unexpected accident if
the vehicle were to suddenly
accelerate. Before starting to drive
the vehicle, always confirm the safety
of the surroundings and operate the
selector lever, brake pedal, and
accelerator pedal appropriately.
Note that the vehicle may move
suddenly depending on the vehicle's
load or if it is towing something.
¾Note that the vehicle may move
suddenly after the vehicle roll
prevention function is released while
the vehicle is under the following
conditions:
¾The selector lever is in the N
position.
¾If the selector lever is shifted to the
N position and the brake pedal is
released while the i-stop function
is operating, the brake force is
gradually released. To accelerate
the vehicle, release the brake pedal
after the engine restarts and shift
the selector lever to a position
other than the N position.
NOTE
xWhen the vehicle is stopped on a
steep grade, the vehicle roll
prevention function does not
operate because engine idling is not
stopped.
xThe brake pedal response may
change, sound may occur from the
brakes, or the brake pedal could
vibrate from the operation of the
vehicle roll prevention function.
However, this does not indicate a
malfunction.
▼i-stop Warning Light (Amber)/
i-stop Indicator Light (Green)
To ensure safe and comfortable use of
the vehicle, the i-stop system
constantly monitors the driver's
operations, the vehicle's interior and
exterior environment, and the
operational status of the vehicle, and
uses the i-stop warning light (amber)
and i-stop indicator light (green) to
inform the driver of various cautions
and warnings.
NOTE
On vehicles equipped with the centre
display, the i-stop operation status is
displayed in the fuel efficiency monitor
display.
Refer to the Fuel Efficiency Monitor
section in the Mazda Connect
Owner's Manual.
i-stop warning light (amber)
When the light is turned on
xThe light turns on when the ignition
is switched ON and turns
off when
the engine is started.
x(European model)
The light turns on if the following
operations are performed while
engine idling is stopped. In such
cases, the engine does not restart
When Driving
Start/Stop Engine
4-18

automatically to ensure safety. Start
the engine using the normal method.
xThe bonnet is opened.xThe driver's seat belt is unfastened
and the driver's door is opened.
x(Except European model)
x(Manual transmission)
A sound is activated when the
door is opened while the engine
idling is stopped with the shift
lever in a position other than
neutral. In this case, the engine
does not restart automatically to
ensure safety. Shift the shift lever to
neutral and start the engine.
xIf the i-stop warning light (amber)
remains on while the engine is
running, the battery performance
may have decreased. Have your
vehicle inspected by an expert
repairer (we recommend an
Authorised Mazda Repairer).
NOTE
A problem in the system may be
indicated under the following
conditions. Have your vehicle
inspected by an expert repairer (we
recommend an Authorised Mazda
Repairer).
xThe light does not turn on when the
ignition is switched ON.
xThe light continues to remain on
while the engine is running.
When the light is flashing
The light continues to flash if the
system has a malfunction. Have your
vehicle inspected by an expert repairer
(we recommend an Authorised Mazda
Repairer).
i-stop indicator light (green)
When the light is turned on
xThe light turns on while engine idling
is stopped and turns off when the
engine is restarted.
When the light is flashing
x(Manual transmission)
xThe light flashes when the shift
lever is shifted to a position other
than the neutral while engine
idling is stopped to notify the
driver that engine idling is stopped.
xBy depressing the clutch pedal, the
engine restarts automatically and
the light turns off.
x(European model)
The light flashes when the driver's
door is opened while engine idling is
stopped to notify the driver that
engine idling is stopped. It turns off
when the driver's door is closed.
When Driving
Start/Stop Engine
4-19

Cylinder Deactivation*
▼Cylinder Deactivation
The cylinder deactivation is a function
designed to reduce fuel consumption
and improve fuel economy by
deactivating 2 out of the 4 cylinders
while driving. The function constantly
determines which is better for driving;
4 cylinders or 2 cylinders, regardless of
the driver's operations, and it performs
the switching automatically.
When the cylinder deactivation
function does not operate
The cylinder deactivation function
does not operate under the following
conditions.
xThe selector lever is in the P, N, or R
position (automatic transmission), or
1st gear (manual transmission).
xThe engine oil temperature or engine
coolant temperature is low.
xAfter disconnecting the battery
terminals for some reason, such as
for battery replacement.
When Driving
Start/Stop Engine
4-20*Some models.

Instrument Cluster and
Display
▼Instrument Cluster and Display

ƒInstrument Cluster.......... page 4-21
„Active Driving Display..... page 4-39
Instrument Cluster
▼Instrument Cluster

ƒTachometer.................... page 4-21
„Multi-information Display...............
..................................... page 4-23
…Engine Coolant Temperature
Gauge............................ page 4-25
†Fuel Gauge..................... page 4-26
‡Instrument Panel Illumination
Switch............................ page 4-27
ˆSpeedometer..................page 4-21
‰TRIP Switch.................... page 4-25
▼Speedometer
The speedometer indicates the speed
of the vehicle.
▼Tachometer
The tachometer shows engine speed in
thousands of revolutions per minute
(rpm).
When Driving
Instrument Cluster and Display
4-21

CAUTION
Do not run the engine with the
tachometer needle in the RED ZONE.
This may cause severe engine damage.

1. STRIPED ZONE*1
2. RED ZONE*1
*1 The range varies depending on the type of
gauge.
NOTE
When the tachometer needle enters
the STRIPED ZONE, this indicates to
the driver that the gears should be
shifted before entering the RED ZONE.
When Driving
Instrument Cluster and Display
4-22