 |
am3zzn00010318
i-stop CONTROL [SKYACTIV-X 2.0]
id0140hf008900
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
|
• Drives the electric AT oil pump to assure line pressure during an engine stop by the i-stop control. (See OIL PUMP [ET6A-EL, ET6AX-EL].)
|
|
Vehicle roll prevention function
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• Controls the traction control solenoid valve in the electronically controlled brake unit to maintain or decrease brake fluid pressure.
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Block Diagram
am3zzn00010318
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Operation
Engine stop control
|
Determination module |
Determination item |
Determination condition |
|
|---|---|---|---|
|
ATX |
MTX |
||
|
PCM
|
Vehicle speed
If i-stop control is performed (engine stop control) while vehicle is stopped
|
0 km/h {0 mph}
|
3 km/h {1 mph} or less
|
|
Vehicle speed
If i-stop control is performed (engine stop control) while driving
|
20 km/h {12 mph} or less
|
10 km/h {6.2 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
|
|
|
PCM
|
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 angle
If i-stop control is performed (engine stop control) while driving
|
Within 20° of center to left and right
(After EPS control module learns center value)
|
←
|
|
|
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)
|
• Driving at a speed of 13 km/h {8.1 mph} or more
• During i-stop while driving (engine stop control): Driving at a speed of 30 km/h {19 mph} or more
|
Driving at a speed of 11 km/h {6.8 mph} or more
|
|
|
Door (driver's side)
|
Closed
|
←
|
|
|
Hood
|
Closed
|
←
|
|
|
Vehicle inclination angle
If i-stop control is performed (engine stop control) while vehicle is stopped
|
Within ±7° when level
|
Not applicable
|
|
|
Vehicle inclination angle
If i-stop control is performed (engine stop control) while driving
|
Within ±1.1° when level
|
←
|
|
|
Seat belt (driver's side)
|
Fastened*3
|
←
|
|
|
Steering angle sensor initial setting
|
Completed
|
←
|
|
|
Battery condition setting
|
Completed
|
←
|
|
|
Engine coolant temperature
|
20—110 °C {68—230 °F}
|
←
|
|
|
Intake air temperature
|
100 °C {212 °F} or less
|
←
|
|
|
Altitude
|
2,000 m {6561 ft} or less
|
←
|
|
|
System condition
|
i-stop related part DTCs are not recorded
|
←
|
|
|
Mazda M Hybrid battery voltage
|
20 V or more
|
←
|
|
|
Mazda M Hybrid battery condition
|
30 % or more
|
←
|
|
|
Mazda M Hybrid battery temperature
|
59 °C {138 °F} or less
|
←
|
|
|
ISG MOSFET temperature
|
100 °C {212 °F} or less
|
←
|
|
|
ISG monitoring board temperature
|
100 °C {212 °F} or less
|
←
|
|
|
Brake coordinated control end
|
Completed
|
Not applicable
|
|
|
PCM
|
Request deceleration speed
|
When any of the following conditions is met
• MRCC is operating
• MRCC is not operating
|
Not applicable
|
|
Drive selection switch
|
Other than SPORT mode
|
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
|
←
|
|
|
Electronically controlled brake unit
|
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
|
|
Engine restart control
|
Detection module |
Detection item |
Determination conditions |
|
|---|---|---|---|
|
ATX |
MTX |
||
|
PCM
|
Vehicle speed
If i-stop control is performed (engine stop control) while vehicle is stopped
|
1 km/h {0.6 mph} or more
|
4 km/h {2.5 mph} or more
|
|
Vehicle speed
If i-stop control is performed (engine stop control) while driving
|
30 km/h {19 mph} or more
|
18 km/h {6.8 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 fluid pressure
Except European specs. with Mazda M Hybrid
|
Brake fluid pressure Brake fluid pressure is 0.35 MPa {3.6 kgf/cm2, 51 psi} or less while in D or M position and AUTOHOLD is not operating.However, no brake fluid conditions during Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) operation*1
|
Not applicable
|
|
|
Brake fluid pressure
|
Not applicable
|
Brake fluid pressure is 0.2 MPa {2 kgf/cm2, 29 psi} or less
|
|
|
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
If i-stop control is performed (engine stop control) while vehicle is stopped
|
70° or more from center while in D or M position
(After EPS control module learns center value)
|
Not applicable
|
|
|
Steering angle
If i-stop control is performed (engine stop control) while driving
|
Absolute steering angle: Within ±20°
|
Not applicable
|
|
|
PCM
|
Steering angle initial setting
|
When any of the following conditions is met
• Learning reset
|
←
|
|
Shift operation
If i-stop control is performed (engine stop control) while vehicle is stopped
|
Operated from P or N position to D, M, or R 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
If i-stop control is performed (engine stop control) while vehicle is stopped
|
120 s or more
|
←
|
|
|
Engine stop period by i-stop
If i-stop control is performed (engine stop control) while driving
|
135 s or more
|
←
|
|
|
Engine coolant temperature
|
19 °C {66 °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
|
←
|
|
|
Drive selection switch
|
SPORT mode
|
Not applicable
|
|
|
Mazda M Hybrid battery voltage
|
16 V or less
|
←
|
|
|
Mazda M Hybrid battery condition
|
25 % or less
|
←
|
|
|
Mazda M Hybrid battery temperature
|
60 °C {140 °F} or more
|
←
|
|
|
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
|
Not applicable
|
|
|
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
|
←
|
|
|
Electronically controlled brake unit
|
System condition
|
An i-stop related part DTC is recorded
|
Not applicable
|