STOP AND START STOP AND START SYSTEM SYSTEM DESCRIPTION
STOP AND START CONTROL
The stop and start system operates according to the following conditions, achieving appropriate engine stop and start control together with safe and smooth driving characteristics.
When all of the conditions in the following table have been met, the engine is stopped by stop and start control.
| Item | Condition
(All of the following conditions are met) |
|
|---|---|---|
| Idle Stop | Push Start Switch Assembly*1 | More than 5 seconds elapsed at ON |
| Ignition or Starter Switch Assembly*2 | ||
| Engine Coolant Temperature | 40 to 100°C (104 to 212°F) | |
| Ambient Temperature | More than -5°C (23°F) | |
| Driver Door | 3 seconds have elapsed after driver door closed | |
| Driver Seat Belt | Driver side buckle is latched | |
| Electronically Controlled Brake System | Normal | |
| Brake Booster Vacuum | On a flat place, more than 1 second elapses at more than42.5 kPa (0.4 kg/cm2, 6 psi) (Threshold values change according to road surface gradient and brake master pressure.) | |
| Brake Master Cylinder Fluid Pressure*3 | More than 1.1 MPa (11.2 kg/cm2, 160 psi) (changes according to gradient) | |
| Shift Position | After shift lever is operated and 1 second elapses, shift lever is in D or P | |
| CVT Fluid Temperature | ·
25 to 110°C (77 to 230°F) ·
Other than when stop and start control is prohibited due to insufficient CVT fluid pressure, etc. |
|
| Stop and Start System Cancel Switch (Combination Switch Assembly) | OFF | |
| Vehicle Speed | 0 km/h (0 mph) (After the engine has warmed up and is running) | |
| Road Grade | ·
Road Surface Gradient: Road Surface gradient condition is permitted (road surface gradient is within -1.36 m/s2 to 1.36 m/s2) ·
Deceleration sensor calibration: Complete ·
Deceleration sensor offset value: In - 1.36 m/s2 to 1.36 m/s2 ·
Deceleration sensor movement: Deceleration sensor output is not stuck |
|
| Engine Speed | Less than 1250 rpm (changes according to engine coolant temperature) | |
| Hood | 3 seconds have elapsed after engine hood closed (However, permitted when engine started after more than 30 seconds elapsed with ignition switch off state and [ON: engine hood close] | |
| Idle Stop | Auxiliary Battery Voltage*4 | When using specified auxiliary battery:
8.6 V or higher when starter begins operation and 8.3 V or higher when cranking When using non-specified auxiliary battery:
8.92 V or higher when starter begins operation and 8.92 V or higher when cranking |
| Auxiliary Battery Fluid Temperature*5 | -10°C or higher and 55°C or less (14°F or higher and 131 °F or less) | |
| Auxiliary Battery Integrated Current*6 | One of the following conditions is met:
·
-4554 A-sec or higher: "Status of Battery Charge Control"*7 is Charge Control Coordination Mode, Stop and Start Standalone Mode or Low Temperature Mode ·
0 A-sec or higher: "Status of Battery Charge Control"*7 is Stop and Start Restriction Mode or Temperature High/Low Mode |
|
| Auxiliary Battery Charge Control*7 | The value of Data List item Status of Battery Charge Control*7 is not Refresh Charge Mode, Abnormal Mode or Battery Condition Judgment Mode. | |
| Idling Stop Rate /
Total Idling Stop Rate |
·
Idling stop rate for one trip: 50% or less. ·
Total idling stop rate: Less than 40%
|
|
| Idle Stop | Air Conditioning | Any of the following conditions are met:
·
Defogger Switch: OFF, and Blower Switch: OFF ·
With blower switch on, evaporator temperature below threshold (varies depending on each temperature, humidity, amount of solar radiation, etc.) and after certain period of time since engine restarted by stop and start system (threshold varies depending on idling stop conditions) |
| Heater | One of the following conditions is met:
·
Blower switch is off ·
While blower switch is on and A/C switch is off, one of the following conditions is met: -
Ambient temperature is higher than 10°C (50°F), or -
Engine coolant temperature is higher than 55°C (131°F) -
Vehicle cabin temperature is higher than the set temperature - 5°C (23°F) ·
While blower switch is on and A/C switch is off, a certain amount of time has elapsed after engine state changed from "not running" to "running". |
|
| Cooler | One of the following conditions is met:
·
Blower switch is off ·
A/C switch is off ·
Ambient temperature 23°C (73°F) or less ·
Evaporator internal temperature less than 9°C (48°F), air mix damper opening value more than 10%, and vehicle cabin temperature less than 3°C (37°F) above set temperature or blower level less than 16 (when ignition switch turned to ON for first time in one trip) |
|
| Engine Control | ·
Engine catalytic warm up is completed ·
Engine control learning has completed ·
CVT control learning has completed |
|
*1: w/ Smart Entry and Start System
*2: w/o Smart Entry and Start System
- HINT:
- ·
*3: Enough brake force is applied to prevent the vehicle from moving when the engine is started again.
·*4: If stop and start control is prohibited (NG) due to battery voltage, stop and start control will begin operating again (OK) when one of the following conditions is met
-When the engine is started and the battery voltage permission conditions are met after the ignition switch is turned off and 8 hours have elapsed
-When the battery voltage permission conditions are met after "Starter (Hood Closed)" is performed using the GTS
·*5: When the auxiliary battery fluid temperature is -15°C (5°F) or less, or 60°C (140°F) or higher, stop and start control is prohibited. When the auxiliary battery fluid temperature returns to -10°C (14°F) or higher, and 55°C (131°F) or less, stop and start control is permitted.
·*6: Read the Data List items "Integrated Current" and "Stop&Start Operating Permission (Integrated Current)" when checking the integrated current value.
·*7: Please refer to the Data List "Status of Battery Charge Control" for information about the status of the auxiliary battery charge control.
When the engine is stopped by stop and start control, and any of the following conditions are met, the engine will restart.
| Item | Condition
(Any of the following conditions is met) |
|
|---|---|---|
| Engine Restart | Brake Booster Vacuum | Brake booster vacuum insufficient (Under 37.5 kPa (0.4 kg/cm2, 5 psi)) (Brake booster vacuum changes in accordance with brake fluid pressure (brake pedal effort)) |
| SFI System | Malfunction in SFI system is detected | |
| CVT Fluid Temperature | Temperature is less than 25 (77°F) or more than 110°C (230°F) | |
| Power Steering System | Malfunction in power steering system is detected | |
| Electronically Controlled Brake System | Malfunction in electronically controlled brake system is detected | |
| Electromagnetic Oil Pump | Electromagnetic oil pump malfunctioning | |
| Air Conditioning | Timer in the air conditioning amplifier assembly runs out | |
| Heater | Timer in the air conditioning amplifier assembly runs out | |
| Air Conditioning/Heater | Both of the following conditions are met:
·
Blower switch: ON ·
Evaporator temperature exceeds threshold value (threshold value varies with temperature, humidity and amount of solar radiation) Any of the following conditions are met: from OFF to ON
·
A/C switch, blower switch: from OFF to ON ·
Defogger switch: from OFF to ON ·
During blower OFF and Auto control, when it changed to manual blower ·
Changes from stop and start system priority control to normal system control |
|
| Auxiliary Battery | Auxiliary battery voltage drops (11.8 V or less) | |
| Auxiliary Battery Integrated Current*1 | The accumulated value of discharge current during engine stop is too large (2376 A-sec or more) | |
| Vehicle Speed | Vehicle speed signal is input (Vehicle stopped on a slope, etc.) | |
| Driver Door | Open | |
| Driver Seat Belt | Driver seat belt is unfastened | |
| Brake Pedal | Brake pedal released (brake fluid pressure decreases) | |
| Accelerator Pedal | Accelerator pedal is depressed | |
| Shift Position | Shift lever moved from D or P to other position | |
| Stop and Start System Cancel Switch (Combination Switch Assembly) | When stop and start system cancel switch (combination switch assembly) is turned from off to on | |
- HINT:
-
*1: Read the Data List items "Integrated Current" and "Stop&Start Operating Permission (Integrated Current)" when checking the integrated current value
WARNING CONTROL
If any of the following operations are performed while the engine is stopped due to stop and start control, the system will not restart the engine. The engine will change the mode from "stopped due to system control" to "stalled" or the driver will be warned using the buzzer.
| Operation | Warning Control |
|---|---|
| The engine hood is opened with the shift lever in D or P | The engine stops (mode changes to "stalled", and the engine cannot be restarted until the ignition switch is turned off and then to ON) |
| The driver door is opened with the shift lever in D or P | The engine starts, warning buzzer sounds and stop and start indicator blinks*1 |
| The driver seat belt is unfastened | The engine starts |
*1: When the shift lever is in P, the warning buzzer does not sound and the stop and start indicator does not blink.
WARNING INDICATOR AND BUZZER OPERATION
| *a | Stop and Start Indicator |
| *b | Stop and Start Cancel Indicator |
The driver is informed of the system control status and warnings by the stop and start indicator, stop and start cancel indicator and the buzzer.
- HINT:
-
The stop and start indicator and the stop and start cancel indicator are displayed at the same location in the combination meter.
-
One or the other will be displayed according to the order of priority, but they will not be illuminated simultaneously.
| Item | Condition | Stop and Start Indicator
(Green) |
Stop and Start Cancel Indicator
(Orange) |
Buzzer |
|---|---|---|---|---|
| For 3 seconds after the ignition switch to ON | Normal operation | Comes on | Comes on | Does not sound |
| During stop and start control operation (engine is stopped) | Normal operation | Comes on | Does not come on | Does not sound |
| Driver door opened | Blinks at 0.15 second interval*1 | Does not come on | Sounds*1 | |
| After engine started by stop and start control | Driver door opened within 5 seconds of engine start | Blinks at 0.15 second interval*1 | Does not come on | Sounds*1 |
| Control is prohibited by the stop and start system cancel switch (combination switch assembly) | Normal operation | Does not come on | Comes on | Does not sound |
| Diagnostic trouble code | Any DTCs are stored | Does not come on | Blinks at 0.5 second interval | Does not sound |
| Starter assembly life | Number of times the starter has been operated exceeds its limit | Does not come on | Blinks at 0.5 second interval | Does not sound |
*1: Shift lever in D
MULTI-INFORMATION DISPLAY MESSAGE AND INDICATOR OPERATION
An indicator and/or messages are displayed on the multi-information display to indicate the condition of the stop and start system when certain vehicle conditions are met.
| Stop and Start System Condition | Multi-information Display Message*1 | Vehicle Condition | |
|---|---|---|---|
| When the engine cannot be stopped by the stop and start system | 
*2 |
"Press Brake More to Activate" | The brake pedal is not depressed enough. |
| "Non-Dedicated Battery" | A non-specified auxiliary battery for the stop and start system may have been installed. | ||
| "Battery Charging" | ·
The auxiliary battery charge amount may be low. ·
A refresh charge may be occurring. ·
The auxiliary battery voltage may be low. ·
The auxiliary battery temperature may be high. |
||
| "Stop & Start Unavailable" | ·
The engine may have been started with the hood opened. ·
The stop and start system is temporarily disabled. |
||
| "In Preparation" | ·
The brake booster load decreased. ·
The vehicle is operated at a high elevation. |
||
| "For Climate Control" | ·
The air conditioning system is being used when the ambient temperature is high or low. ·
Windshield defogger is pressed. |
||
| When the engine automatically restarts while stopped by the stop and start system |
*2 |
"In Preparation" | The brake pedal is strongly depressed further or pumped. |
| "For Climate Control" | ·
The air conditioning system is turned on or the air conditioning is being used. ·
Windshield defogger is turned on. |
||
| "Battery Charging" | The auxiliary battery charge amount may be low. | ||
| The system may be malfunctioning | - | "Stop & Start System Malfunction Visit Your Dealer" | - |
- HINT:
- ·
*1: Messages are listed in the order of priority.
·*2: When the engine cannot be stopped by the stop and start system or the engine is restarted while the engine is stopped by the stop and start system, the following mark is displayed on the multi-information display.
STOP AND START SYSTEM OPERATION
Depending on the type of malfunction, stop and start control may be prohibited by the fail-safe function. The following table shows effects on the vehicle and areas to be inspected when there is a malfunction in the stop and start system.
| Malfunctioning Area | Malfunction | DTC Output | Data List / Freeze Frame Data | Effect on Vehicle | Area to be Inspected |
|---|---|---|---|---|---|
| IGSW circuit | Open | P253014 | IG Switch | ·
Stop and start control prohibited ·
Stop and start cancel indicator light blinks |
Wire harness or connector |
| +B circuit | Open | - | Data List cannot be checked because power not supplied to the engine stop and start ECU | Stop and start control prohibited | Wire harness or connector |
| BNT1 (engine hood courtesy switch) circuit | Stuck on | - | Hood Courtesy Switch | Mode does not change to "stalled" when engine hood opened with shift lever in D or P and engine stopped by stop and start control | ·
Wire harness or connector ·
Engine hood courtesy switch (hood lock with courtesy light switch assembly) |
| Stuck off | - | Stop and start control prohibited despite engine hood being closed | |||
| ECAN (stop and start system cancel switch (combination switch assembly)) circuit | Stuck on | - | Stop&Start Cancel Switch | Stop and start control prohibited | ·
Wire harness or connector ·
Stop and start system cancel switch (combination switch assembly) |
| Stuck off | - | Stop and start control cannot be canceled by pressing the stop and start system cancel switch (combination switch assembly) | |||
| BRVC/PB/BRE2 (vacuum sensor) circuit | Open | P055515 | Brake Boost Pressure | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
Wire harness or connector ·
Vacuum sensor assembly ·
Brake booster assembly ·
Vacuum hose |
| Shorted | ·
P055511 ·
P055515 |
||||
| Remains at intermediate value | ·
P055500 ·
P05552A |
||||
| NOPM circuit
OPM1 circuit OP21 circuit (Electromagnetic oil pump) |
·
Open ·
Shorted ·
Internal circuit malfunction |
·
P0C2B11 ·
P0C2B15 ·
P279796 |
·
Oil Pump Relay ·
Oil Pump Duty ·
State of Oil Pump Revolution ·
Oil Pump Revolution Frequency |
·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
Wire harness or connector ·
Engine stop and start ECU ·
Electromagnetic oil pump |
| Electromagnetic oil pump | Electromagnetic oil pump malfunction | P094296 | Stop&Start Operating Permission (AT/CVT) | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
Electromagnetic oil pump |
| STA circuit | Overcurrent | P061519 | - | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
BBC NO. 1 fuse ·
BBC NO. 2 fuse ·
Wire harness or connector ·
ST relay ·
Engine stop and start ECU |
| Stuck on | P164400 | ·
Wire harness or connector ·
ST relay ·
Engine stop and start ECU |
|||
| Stuck off | P164400 | ||||
| BBC (backup boost converter) circuit | Overcurrent | P323A19 | State of BBC | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
BBC NO. 1 fuse ·
BBC NO. 2 fuse ·
Wire harness or connector ·
Engine stop and start ECU ·
Auxiliary battery ·
ECUs and sensors connected to B41, B42 and IG41 |
·
Open ·
Shorted ·
Internal circuit malfunction ·
Auxiliary battery |
·
P30DF62 ·
P30EF4B ·
P323A00 ·
P323A16 ·
P323AA2 ·
P323B29 ·
P323B38 |
State of BBC | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
BBC NO. 1 fuse ·
BBC NO. 2 fuse ·
Wire harness or connector ·
Engine stop and start ECU ·
Auxiliary battery |
|
| ECU inner circuit | Malfunction | P16449E | - | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
Engine stop and start ECU |
| Monitoring CPU circuit | Malfunction | P060629 | State of BBC | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
Engine stop and start ECU |
| Crankshaft position sensor circuit | Open | P033562 | ·
Engine Speed (ECM) ·
Engine Speed |
Stop and start control prohibited | ·
Wire harness or connector ·
Crankshaft position sensor |
| Malfunctioning Area | Malfunction | DTC Output | Data List / Freeze Frame Data | Effect on Vehicle | Area to be Inspected |
|---|---|---|---|---|---|
| SFI system | MIL illuminated | DTCs for SFI system output | ·
Stop&Start Operating Permission (ECM 1) ·
Stop&Start Operating Permission (ECM 2) |
Stop and start control prohibited | SFI system |
| Abnormal NE signal | DTCs for SFI system output | - | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
SFI system (crankshaft position sensor circuit) ·
Wire harness or connector |
|
| Crankshaft reverse rotation detection | DTCs for SFI system output | - | ·
Stop and start control prohibited ·
MIL illuminated |
SFI system (crankshaft position sensor circuit) | |
| Charging system | Battery state sensor assembly malfunction | Charging system DTCs output | ·
Battery Fluid Temperature ·
Integrated Current |
Stop and start control prohibited | Charging system |
| Electronically controlled brake system | ABS running | - | ABS Running | Stop and start control prohibited | - |
| Malfunction in wheel speed sensor | Brake control system DTCs output | ·
Vehicle Speed ·
Wheel Speed Malfunction |
Stop and start control prohibited | ·
Wire harness or connector ·
Skid control ECU (Brake actuator assembly) ·
Vehicle speed sensor |
|
| Power steering system | Malfunction in power steering system | EPS assist current value invalid | ·
EPS Load ·
EPS Assist Current Available |
Stop and start control prohibited | ·
Power steering ECU ·
Torque sensor |
| Seat belt warning system | Malfunction in seat belt warning system | - | Driver Seat Belt Buckle Switch | ·
Stop and start control prohibited (stuck off) ·
Engine does not restart when it is stopped by stop and start control (stuck on) |
·
Front seat inner belt assembly LH ·
Wire harness or connector |
| Driver door courtesy light switch circuit | Malfunction in driver door courtesy light switch circuit | - | Driver Courtesy Switch Signal | ·
Stop and start control prohibited (stuck off) ·
Engine does not restart when it is stopped by stop and start control (stuck on) ·
Stop and start indicator blinks ·
Sounds the warning buzzer |
·
Front door courtesy light switch assembly LH ·
Driver door courtesy light switch circuit |
| Air conditioning system | Malfunction in ambient temperature sensor | Air conditioning system DTCs output | Ambient Temperature | Stop and start control prohibited | Ambient temperature sensor circuit |
| Brake vacuum | Brake booster vacuum drops | - | ·
Brake Boost Pressure ·
Brake Negative Pressure |
Stop and start control prohibited | ·
Brake booster assembly vacuum ·
Brake booster assembly ·
Vacuum sensor assembly ·
Vacuum hose |
| Power source | Backup boost converter malfunction | ·
P30DF62 ·
P30EF4B ·
P323A00 ·
P323A16 ·
P323AA2 ·
P323B29 ·
P323B38 |
State of BBC | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
BBC NO. 1 fuse ·
BBC NO. 2 fuse ·
Wire harness or connector ·
Engine stop and start ECU ·
Auxiliary battery |
| Charging system malfunction | - | Alternator Status | Stop and start control prohibited | Charging system | |
| Charging control system | X0879 | - | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
Charging system | |
| Number of starter operations | Exceeds the specified limit | X0877 | ·
Starter Operation # ·
Number of Engine Starts (IG-ON) ·
Number of Engine Starts (Stop & Start) |
·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
Starter assembly replacement is required ·
ST relay replacement is required ·
Fuse replacement is required |
| Starter signal malfunction | Signal does not match with the starter switch | P061562 | ·
Starter ·
Engine Starter Signal |
·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
Wire harness or connector ·
Engine stop and start ECU |
| Jump start | Engine started with the engine hood open | - | Stop&Start Operating Prohibition (Jump Start) | Stop and start control prohibited
(permitted when the ignition switch is turned off) |
·
Check for history of roadside service or jump start due to dead auxiliary battery ·
Engine hood courtesy switch (hood lock with courtesy light switch assembly) |
| CAN communication | Communication interrupted | ·
U010087 ·
U012687 ·
U012987 ·
U013187 ·
U014087 ·
U015187 ·
U015587 ·
U016487 ·
U111087 ·
U117087 |
- | ·
Stop and start control prohibited ·
Stop and start cancel indicator blinks |
·
Applicable wire harness or connector ·
Applicable ECU |