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atsuzn00000613
i-stop CONTROL [SKYACTIV-D 1.8]
id0140s1008900
Outline
Control Table
|
Control name |
Control outline |
|---|---|
|
Engine stop control
|
• The engine is stopped when the i-stop (engine stop control) conditions are met.
(See Engine stop control.)
|
|
Engine restart control
|
• The engine restarts when the i-stop (engine restart control) conditions are met.
(See Engine restart control .)
|
|
Electric AT oil pump driver control (ATX)
|
• Drives the electric AT oil pump to assure line pressure during an engine stop by the i-stop control.
|
|
Vehicle roll prevention function (ATX)
|
• Controls the traction control solenoid valve in the DSC HU/CM to maintain or decrease brake fluid pressure.
|
Block Diagram
atsuzn00000613
|
Operation
Engine stop control
|
Determination module |
Determination item |
Determination condition |
|
|---|---|---|---|
|
ATX |
MTX |
||
|
PCM
|
Vehicle speed
|
0 km/h {0 mph}
|
3 km/h {1 mph} or less
|
|
Brake pedal
|
Brake pedal is depressed while in D or M position
However, no brake pedal conditions during Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) and Cruising & Traffic Support (CTS) operation*1
|
Not applicable
|
|
|
Brake fluid pressure
|
Brake fluid pressure is 1.35 MPa {13.8 kgf/cm2, 196 psi} or more while in D or M position (perform correction according to vehicle inclination angle)
However, no brake fluid pressure conditions during Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) and Cruising & Traffic Support (CTS) operation*1
|
Not applicable
|
|
|
Brake stroke
|
3 mm {0.1 in} or more
|
Not applicable
|
|
|
Panic brake
|
Not operating
|
←
|
|
|
ABS control
|
Not operating
|
←
|
|
|
Accelerator pedal
|
Released
|
←
|
|
|
Clutch pedal
|
Not applicable
|
Released
|
|
|
MTX gear position
|
Not applicable
|
Neutral
|
|
|
Vehicle conditions
|
Vehicle is stopped in D position*2
|
Not applicable
|
|
|
Steering speed
|
15 deg/s or less
|
←
|
|
|
Steering angle
|
Within 65° of center to left and right
(After EPS control module learns center value)
|
Not applicable
|
|
|
Steering torque
|
1.1 N·m {11 kgf·cm, 9.7 in·lbf} or less
|
←
|
|
|
i-stop OFF switch
|
OFF
|
←
|
|
|
Vehicle speed history
(After engine started and driven once)
|
3 km/h {2 mph} or more
|
4 km/h {3 mph} or more
|
|
|
Battery charge condition
|
65.72 % or more
|
←
|
|
|
Battery fluid temperature
|
0—70 °C {32—158 °F}
|
←
|
|
|
Battery voltage
|
11.2 V or more
|
←
|
|
|
Power brake unit vacuum
|
-49.8 kPa {-0.508 kgf/cm2, -7.22 psi} or less (value calculated by subtracting BARO from BBP)
|
←
|
|
|
Door (driver's side)
|
Closed
|
←
|
|
|
Hood
|
Closed
|
←
|
|
|
Vehicle inclination angle
|
Within ±7° when level
|
Not applicable
|
|
|
Seat belt (driver's side)
|
Fastened*3
|
←
|
|
|
Steering angle sensor initial setting
|
Completed
|
Not applicable
|
|
|
Engine coolant temperature
|
25—110 °C {77—230 °F}
|
←
|
|
|
Intake air temperature
|
100 °C {212 °F} or less
|
←
|
|
|
Altitude
|
1,800 m or less (BARO: 81.5 kPa {0.831 kgf/cm2, 11.8 psi} or more)
|
←
|
|
|
System condition
|
i-stop related part DTCs are not recorded
|
←
|
|
|
Brake coordinated control end
|
Completed
|
Not applicable
|
|
|
Request deceleration speed
|
When any of the following conditions is met
• MRCC is operating
• MRCC is not operating
|
Not applicable
|
|
|
BCM
|
+B (ROOM fuse) input
|
Yes
|
←
|
|
IG1 input
|
Yes
|
←
|
|
|
ACC input
|
Yes
|
←
|
|
|
IG1 output
|
Yes
|
←
|
|
|
ACC output
|
Yes
|
←
|
|
|
Push button
|
Not pressed
|
←
|
|
|
Door (all)
|
Closed
|
←
|
|
|
Liftgate
|
Closed
|
←
|
|
|
Seat belt (driver's side)
|
Fastened*3
|
←
|
|
|
Engine start
|
Engine was started by operating push button with key inside cabin (engine started first time)
|
←
|
|
|
Engine rotation speed
|
300 rpm or more is maintained after engine started
|
←
|
|
|
System condition
|
i-stop related part DTCs are not recorded
|
←
|
|
|
TCM
|
TCM detection condition
|
All met (I-Stop_EST: On)
|
Not applicable
|
|
Panic stop
|
Brake pedal was not depressed suddenly within 4 s
|
Not applicable
|
|
|
TFT
|
20―117 °C {68—242 °F}
|
Not applicable
|
|
|
Gear position
|
Not in 2nd gear fixed mode
|
Not applicable
|
|
|
System condition
|
i-stop related part DTCs are not recorded
|
Not applicable
|
|
|
Dash-electrical supply unit
|
Climate control unit determination condition
|
With full-auto A/C
• All met
(STOP_ST: Available)
With manual A/C
• All met
|
←
|
|
Cabin temperature (with full-auto A/C)
|
Difference between target cabin temperature and actual cabin temperature is a certain value or less
(Cabin temperature control by A/C is normally performed)
|
←
|
|
|
A/C temperature (with full-auto A/C)
|
Setting other than MAX/MIN
|
←
|
|
|
Ambient temperature
|
-10―50 °C {14—122 °F}
|
←
|
|
|
Cold condition (with manual A/C)
|
Ambient temperature is 29 °C {84 °F} or less and evaporator temperature is 9 °C {48 °F} or less
|
←
|
|
|
Cold condition (with full-auto A/C)
|
Ambient temperature is 4 °C {39 °F} or more or evaporator temperature is 12 °C {54 °F} or less
|
←
|
|
|
Warm-up operation condition (with manual A/C)
|
Ambient temperature is 10 °C {50 °F} or more and engine coolant temperature is 60 °C {140 °F} or more
|
←
|
|
|
Dash-electrical supply unit
|
Front defroster switch
|
OFF
|
←
|
|
System condition
|
i-stop related part DTCs are not recorded
|
←
|
|
|
DSC HU/CM
|
Operation request from PCM
|
Hill Launch Assist (HLA) control request signal from PCM is received
|
Not applicable
|
|
Vehicle inclination angle
|
Inclination is within ±6° with shift positioned in D/M/R or N/P (LON_ACCL_C: within ±0.104 G)
|
Not applicable
|
|
|
Wheel speed (4 wheels)
|
0 km/h {0 mph}
|
Not applicable
|
|
|
Brake pedal
|
Brake pedal is depressed
|
Not applicable
|
|
|
Brake fluid pressure
|
Approx. 0.45 MPa {4.6 kgf/cm2, 65 psi} or more
|
Not applicable
|
|
|
Accelerator pedal
|
Released
|
Not applicable
|
|
|
System condition
|
i-stop related part DTCs are not recorded
|
Not applicable
|
|
am2zzn00003645
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Engine restart control
|
Detection module |
Detection item |
Determination conditions |
|
|---|---|---|---|
|
ATX |
MTX |
||
|
PCM
|
Vehicle speed
|
1 km/h {0.6 mph} or more
|
4 km/h {2.5 mph} or more
|
|
Brake pedal
|
• Brake pedal is released → depressed while in P or N position
• Brake pedal is released while in D or M position and AUTOHOLD is not operating
• However, no brake pedal conditions during Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) and Cruising & Traffic Support (CTS) operation*1
|
Released
|
|
|
Brake stroke
|
2.5mm {0.098 in} or less at D position
|
2.5mm {0.098 in} or less
|
|
|
Panic brake
|
Operating
|
←
|
|
|
ABS control
|
Operating
|
←
|
|
|
Other system
|
Vehicle roll prevention function is not operating at D position
|
Not applicable
|
|
|
Accelerator pedal
|
Accelerator pedal is depressed while in D or M position
|
Not applicable
|
|
|
Clutch pedal
|
Not applicable
|
Depressed
|
|
|
Steering torque
|
4.0 N·m {41 kgf·cm, 35 in·lbf} or more while in D or M position
|
Not applicable
|
|
|
Steering angle
|
70° or more from center while in D or M position
(After EPS control module learns center value)
|
Not applicable
|
|
|
Steering angle initial setting
|
When any of the following conditions is met
• Learning reset
|
←
|
|
|
Shift operation
|
Other than D position
|
Not applicable
|
|
|
i-stop OFF switch
|
ON
|
←
|
|
|
Driver not seated
|
European specs.
• All the following conditions are met:
Except for European specs.
• All the following conditions are met:
|
European specs.
• Seat belt (driver's side): Not fastened
Except for European specs.
• All the following conditions are met:
|
|
|
Engine stop period by i-stop
|
120 s or more
|
←
|
|
|
Engine coolant temperature
|
24 °C {75 °F} or less
|
←
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
|
|
MRCC request deceleration speed
|
MRCC is operating: -1.5m/s2 or more
|
←
|
|
|
Battery charge condition
|
65 % or less
|
←
|
|
|
Power brake unit vacuum
|
-47.8 kPa {-0.487 kgf/cm2, -6.93 psi} or more (value calculated by subtracting BARO from BBP)
|
←
|
|
|
BCM
|
+B (ROOM fuse) input
|
No
|
←
|
|
Remote transmitter authorization
|
When engine restart by remote transmitter authorization is requested
• Any door is open without remote transmitter left in vehicle
• Remote transmitter is outside of vehicle after any door is opened
|
←
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
|
|
TCM
|
Gear position
|
In 2nd gear fixed mode
|
Not applicable
|
|
TFT
|
20 °C {68 °F} or less, or 117°C {243 °F} or more
|
Not applicable
|
|
|
Vehicle speed
|
3 km/h {2 mph} or more
|
Not applicable
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
|
|
Dash-electrical supply unit
|
A/C request (with full-auto A/C)
|
Yes
|
←
|
|
A/C set temperature (with full-auto A/C)
|
Set to MAX or MIN
|
←
|
|
|
Front defroster switch
|
ON
|
←
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
|
|
DSC HU/CM
|
System condition
|
An i-stop related part DTC is recorded
|
Not applicable
|
am2zzn00003646
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