Basic Operation
When the stop/start system readiness conditions are satisfied while the vehicle is moving, the system is ready.
When the stop/start system operation conditions are satisfied while the vehicle is in a stop condition, the engine is stopped.
During stop/start system operation, stopping time, the amount of fuel saved by the stop/start system and CO 2 saved information are indicated on the combination meter. (With dot matrix information display. Refer to System Description .)
When the engine restart conditions are satisfied, ECM and EMCM activate relays to restart the engine.
After restarting the engine, the stop/start indicator lamp and the indication on the information display turn OFF.
Stop/Start Readiness Condition
ECM and EMCM judge stop/start system is ready when the following conditions are satisfied.
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System |
Judgement ECU |
Item |
Condition |
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Vehicle |
ECM |
Stop/start OFF switch |
OFF (Switch indicator: OFF) |
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Elevation |
Approximately 2, 500 m (8, 202 ft) or less |
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Door (driver side) |
Close |
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Seat belt (driver side) |
Fastened |
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Stop/start indicator Lamp |
Not blink (Malfunction non-detection) |
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Driving history |
Drive the vehicle at 13 km/h (8 MPH) or more after start the engine with ignition switch. |
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Drive the vehicle at 8 km/h (5 MPH) or more.
NOTE:
When shift the selector lever R to D, drive the vehicle at 10 km/h (6.3 MPH) or more.
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Passes 5 seconds or more after restart |
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Hood |
Close |
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Air conditioning |
Automatic air conditioning |
Not in DEF mode |
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In-vehicle temperature |
More than Approx. 20 deg.C (68 deg.F) |
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Less than 30 deg.C (86 deg.F) (A/C switch: ON) |
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Stop/Start permit (for details, refer to System Description .) |
Permit |
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EMCM |
Rear window defogger |
OFF |
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ABS actuator and electric unit (control unit) |
ABS not activated *1 |
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ESP not activated |
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Power steering control system |
System is normal |
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Main battery |
Main battery voltage |
Ignition switch ON: 11.5 V or more *4 |
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When start the engine with ignition switch: 7.68 V or more *3 |
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Main battery temperature |
2 deg.C (36 deg.F) or more *2 |
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Charge condition |
Charged enough |
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Sub battery |
Sub battery voltage |
Ignition switch ON: 11.5 V or more *4 |
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Sub battery temperature |
2 deg.C (36 deg.F) or more *2 |
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Charge condition |
Charged enough |
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Electrical load *5 |
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Engine |
ECM |
Engine control system |
System is normal (DTC is not detected) |
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Engine coolant temperature |
40 - 115 deg.C (104 -239 deg.F) |
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Number of the starter motor operation |
Under the threshold *6 |
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Transmission |
ECM |
Selector lever position |
Except R range |
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Sub electric oil pump |
System is normal |
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Stop/Start permit (for details, refer to System Description .) |
Permit |
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*1: When ABS system is activated, drive the vehicle at 12 km/h (7.5 MPH) or more after stop the vehicle.
*2: Stop/Start system might not be activated at ambient temperature of 2 deg.C (36 deg.F) or more because a battery temperature varies with driving conditions.
*3: EMCM judges a battery deterioration condition.
*4: The voltage varies with a electric load when the ignition switch is turned ON.
*5: This condition is monitored when the battery is judged to be deterioration by EMCM.
*6: If the operation count reaches the threshold, ECM detects related DTC P1D06.
Stop/Start Operation Condition
When all of the following conditions is satisfied, ECM stops the engine.
|
Item |
Condition |
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Vehicle |
Stop/start readiness condition |
Ready |
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Vehicle speed |
0 km/h (0 MPH) |
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Steering wheel |
Not steer (steering force does not occur) |
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Accelerator pedal |
Released |
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Brake pedal |
Depressed * |
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Brake fluid pressure |
0.7 MPa (7 bar, 7.14 kg/cm 2 , 101 psi) or more |
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Brake booster vacuum |
Presence of sufficient negative pressure to a brake force. |
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Vehicle angularity |
Approx. 14% or less |
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Engine |
Engine speed |
1, 200 rpm or less |
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Transmission |
Selector lever position |
Except R range |
*: EMCM calculates a brake pedal status based on the brake pedal position switch signal and the brake fluid pressure sensor signal. And then, EMCM transmits a brake pedal position signal to ECM via CAN communication.
Restart Condition
When any of the following conditions is satisfied, ECM restarts the engine, and the combination meter turns OFF the stop/start indicator lamp.
|
Item |
Condition |
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Stop/Start OFF switch |
ON (Switch indicator: ON) |
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Steering wheel |
Steer (steering force occurs) |
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Air conditioning |
Cannot maintain comfort in the vehicle compartment |
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Rear window defogger switch |
ON |
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Door (driver side) |
Open |
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Seat belt (driver side) |
Release |
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Brake pedal |
Influenced by a selector lever position * |
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Accelerator pedal |
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Selector lever position |
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Brake booster pressure |
Insufficient pressure for braking force |
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Vehicle speed |
2 km/h (1.3 MPH) or more |
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*: For details, refer to RESTART CONDITION (EACH SELECTOR LEVER, THE BRAKE PEDAL AND THE ACCELERATOR PEDAL OPERATION).
Restart Inhibit Mode
When open the "hood" under the stop/start system operating condition (engine stop), ECM inhibits restarting the engine (engine stall). In this case, start the engine with ignition switch for restart.