Auto Idle Stop System Description - Operation Conditions (With Auto Idle Stop System) (2020 2021)
Conditions for Auto Idle Stop and Engine Restart
Available Conditions for Auto Idle Stop and Engine Restart Conditions After Auto Idle Stop
| Determination Items | Available Conditions for Auto Idle Stop | Engine Restart Conditions After Auto Idle Stop | HDS Parameter [Menu] |
|---|---|---|---|
| Related Systems | Normal (no DTCs are stored) | Related system malfunction occurred (DTCs are stored). Some conditions will prevent restart* 1 | -- |
| Idle Stop Off Switch | OFF (system is not cancelled on purpose) | ON (system is cancelled on purpose) | IDLE STOP INHIBIT (IDLE STOP CANCEL SWITCH) [PGM FI] |
| Hood | Closed* 2 | Not a condition* 1 | IDLE STOP INHIBIT (HOOD OPEN) [PGM FI] |
| Driver's Seat Belt | Buckled | Unbuckled | IDLE STOP INHIBIT (SEAT BELT UNFASTENED) [PGM FI] |
| Incline | No-sloping | Not a condition | IDLE STOP INHIBIT (INCLINED STATE) [PGM FI] |
| Vehicle Speed Record | The vehicle speed exceeds more than 3 mph (5 km/h) (or 9.3 mph (15 km/h)) *3 after its last engine restart. | Not a condition | VEHICLE SPEED [PGM FI] VEHICLE SPEED [AT] LEFT FRONT WHEEL SPEED [ABS/VSA] RIGHT FRONT WHEEL SPEED [ABS/VSA] LEFT REAR WHEEL SPEED [ABS/VSA] RIGHT REAR WHEEL SPEED [ABS/VSA] |
| Vehicle Speed | 0 mph (0 km/h) | Exceed 0 mph (0 km/h) | |
| Vehicle Stop Record | 20 seconds or more has elapsed after the last vehicle stop. | Not a condition | |
| Steering Wheel Operation | Unmoved | Moved | IDLE STOP INHIBIT (EPS UNIT) [PGM FI] |
| Shift Position | D Position If the shift lever is moved from D to the P position during auto idle stop activation, auto idle stop will continue. |
Except D->N operation
|
A/T D SWITCH [AT] |
| Transmission Fluid Temperature | 77 deg. F (25 deg. C) - 239 deg. F (115 deg. C) | Except 77 deg. F (25 deg. C) - 239 deg. F (115 deg. C) | CVTF Temperature [AT] |
| CVT Ratio | Not a condition | Not a condition | -- |
| Auxiliary Transmission Fluid Pump | During a not protection control | 160 sec. has elapsed after the pump starts. | -- |
| Correction of Inclination Sensor Learn Procedure | Not a condition | Not a condition | -- |
| Brake Pedal Position Switch |
|
|
Cruise Brake Sw/Idle Stop Sw [PGM FI] Brake Switch [PGM FI] |
| Brake Master Cylinder Fluid Pressure | Brake pedal pressed firmly | Pressure falls specified value | |
| VSA Modulator-control Unit Hydraulic Operation | Not operating | Malfunction is detected | Idle Stop Inhibit (ABS/VSA Unit) [PGM FI] |
| SRS Unit Yaw Rate-Acceleration Neutral Position Memorization | Completed | Not a condition | - |
| Accelerator Pedal Position | Accelerator pedal is released | Accelerator pedal is pressed | APP Sensor [PGM FI] |
| Engine Coolant Temperature | 149 deg. F (65 deg. C) - 230 deg. F (110 deg. C) | The specified value is out of specifications as detected by the HVAC system. | ECT Sensor 1 [PGM FI] |
| Status of Engine Conditions | The engine is idling normal and both VTC actuator A/B are 10 deg. or less. | Not a condition | -- |
| PCM Idle Learning | Completed | Not a condition | IDLE LEARN [PGM FI] |
*1: Refer to Disable Conditions for the Engine Restart After Auto Idle Stop.
*2: Except in case of the engine started with the hood opened (safety for the service technician).
*3: When the auto idle stop is activated repeatedly (more than 2 times) within 20 seconds.
*4: When the ACC/LSF system is activated.
*5: When the ECON mode is on.
*6: When the climate control system is turned on.
*7: When the transmission is D, the engine is restarted. When the ACC/LSF system and the automatic brake hold system is activated, and the transmission is N, the engine is not restarted.
*8: When the automatic brake hold system is not activated.
*9: While the automatic brake hold is activated, the engine is restarted by pressing the accelerator pedal which also releases the brake hold function.
| Determination Items | Available Conditions for Auto Idle Stop | Engine Restart Conditions After Auto Idle Stop | HDS Parameter [Menu] |
|---|---|---|---|
| Starter/Starter Cut Relay Operation | Within the specified number | Not a condition | -- |
| Status of Starter Motor Operating Conditions | Not a condition | Not a condition* 1 | -- |
| Windshield Defrost Button* 6 | OFF | ON | Idle Stop Inhibit (HVAC) [PGM FI] |
| Climate Control Temperature Setting* 6 | Other than MAX COOL/HOT | When set to MAX COOL/HOT | |
| Blower Fan Control Indication | Speed 4 or less | - | |
| Blower Fan Voltage | 8 V (10 V) *5 or less | Not a condition | |
| Outside Air Temperature* 6 | -4 deg. F (-20 deg. C) - 104 deg. F (40 deg. C) | Not a condition | |
| Humidity* 6 | Not a condition | Specified value or more | |
| Cabin Temperature Difference Between Commanded Versus Actual* 6 | Small (comfortable) | Large (uncomfortable) | |
| Estimation 12 Volt Battery Temperature | 41 deg. F (5 deg. C) or more | 41 deg. F (5 deg. C) or less than | Idle Stop Inhibit (Battery Management System) [PGM FI] Estimated Battery Temperature [PGM FI] |
| 12 Volt Battery Charged/Discharged Condition | Sufficient | Insufficient | Idle Stop Inhibit (Battery Management System) [PGM FI] |
| 12 Volt Battery Deteriorated Determination | Not detected | Not a condition | Idle Stop Inhibit (Battery Management System) [PGM FI] IDLE STOP INHIBIT (BATTERY DETERIORATION) [PGM FI] |
| Automatic Brake Hold Switch | Not a condition | ON *9 | -- |
| Driving Support System | ON *4 | If the system meets the following conditions (cooperative control of the driving support system and the auto idle stop system):
|
-- |
| DC-DC Converter | No temperature failure/internal failure/input voltage failure (no DTC is stored) | When the failure is confirmed | IDLE STOP INHIBIT (DC-DC CONVERTER) [PGM FI] |
| Smart Parking Assist System | Nonfunctional | Assist start | -- |
| Electric Brake Booster | Not a condition | Malfunction is detected* 7 | -- |
| Starting Assist Brake Function (controlled by PGM-FI system and VSA system) | Related system is normal | Related system malfunction occurs. | Idle Stop Inhibit (Starting Assist Brake) [PGM FI] |
| Barometric Pressure | The elevation is lower than 9, 842 ft (3, 000 m) | Not a condition* 1 | BARO SENSOR [PGM FI] |
*1: Refer to Disable Conditions for the Engine Restart After Auto Idle Stop.
*2: Except in case of the engine started with the hood opened (safety for the service technician).
*3: When the auto idle stop is activated repeatedly (more than 2 times) within 20 seconds.
*4: When the ACC/LSF system is activated.
*5: When the ECON mode is on.
*6: When the climate control system is turned on.
*7: When the transmission is D, the engine is restarted. When the ACC/LSF system and the automatic brake hold system is activated, and the transmission is N, the engine is not restarted.
*8: When the automatic brake hold system is not activated.
*9: While the automatic brake hold is activated, the engine is restarted by pressing the accelerator pedal which also releases the brake hold function.
Disable Conditions for the Engine Restart After Auto Idle Stop
The Disable Conditions for the Engine Restart After Auto Idle Stop have priority over an Engine Restart Conditions After Auto Idle Stop. During auto idle stop, if any of the below conditions are met, engine restart is prohibited.
- The hood is opened.
- Engine cranks for 5 seconds or more.
- Engine does not crank.
- DC-DC converter has a temperature failure/internal failure/input voltage failure.