Auto Idle Stop - Operation Conditions (2019 2020)
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] |
| Snow Switch | OFF (not in SNOW mode) | ON (SNOW mode is selected) | >-----< |
| 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) after its last engine restart. | Not a condition | Vehicle Speed [PGM FI] Vehicle Speed [AT] LEFT FRONT WHEEL SPEED [ABS/TCS/VSA] RIGHT FRONT WHEEL SPEED [ABS/TCS/VSA] LEFT REAR WHEEL SPEED [ABS/TCS/VSA] RIGHT REAR WHEEL SPEED [ABS/TCS/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] |
| Steering Wheel Angle*7 | Within specified angle | Not a condition | >-----< |
| 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 If the shifter is in the P position and if the vehicle moves, the engine will restart. |
A/T D Switch [AT] |
| Transmission Fluid Temperature | 68 °F (20 °C) - 230 °F (110 °C) | Except 68 °F (20 °C) - 230 °F (110 °C) | ATF Temperature [AT] |
| Correction of Inclination Sensor Learn Procedure | Not a condition | Not a condition | >-----< |
| Brake Pedal Position Switch | ON (brake pedal is pressed) |
|
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 | >-----< |
| Brake Booster Pressure*3 | -42.7 kPa (-12.61 inHg, -320 mmHg) or less*4 | -40.0 kPa (-11.81 inHg, -300 mmHg) or more*4 | Idle Stop Inhibit (Brake System) [PGM FI] BRAKE BOOSTER PRESSURE SENSOR [BRAKE SYSTEM > EVPS] |
| VSA Modulator-control Unit Hydraulic Operation | Not operating | Malfunction is detected | Idle Stop Inhibit (ABS/VSA Unit) [PGM FI] |
| Starting Assist Brake Function (controlled by PGM-FI system and VSA system) | Related system is normal | Failure in related system. | Idle Stop Inhibit (Starting Assist Brake) [PGM FI] |
| VSA Sensor (SRS unit) 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 °F (65 °C) - 230 °F (110 °C) | The specified value is out of specifications as detected by the HVAC system.*5 | ECT Sensor 1 [PGM FI] |
| Status of Engine Conditions | The engine can be normal idling | Not a condition | >-----< |
| PCM Idle Learning | Completed | Not a condition | Idle Learning (Torque) [PGM FI] |
| 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*5 | OFF | ON | Idle Stop Inhibit (HVAC) [PGM FI] |
| Climate Control Temperature Setting*5 | Other than MAX COOL/HOT | When set to MAX COOL/HOT | |
| Blower Fan Voltage*5 | 8 V (10 V)*6 or less | Not a condition | |
| Outside Air Temperature*5 | -4 °F (-20 °C) - 104 °F (40 °C) | Not a condition | |
| Rear A/C Temperature Setting*5 | Other than MAX COOL/HOT | When set to MAX COOL/HOT | |
| Rear A/C Airflow Volume (blower fan display)*5 | Other than MAX | When set to MAX | |
| Humidity*5 | Specified value or less | Specified value or more | |
| Cabin Temperature Difference Between Commanded Versus Actual*5 | Small (comfortable) | Large (uncomfortable) | |
| Estimation 12 Volt Battery Temperature | 14 °F (-10 °C) or more | 14 °F (-10 °C) or less | Idle Stop Inhibit (Battery Management System) [PGM FI] Estimated Battery Resistance (Battery Sensor) [PGM FI] |
| 12 Volt Battery Charged/Discharged Condition | Sufficient | Insufficient | Idle Stop Inhibit (Battery Management System) [PGM FI] Idle Stop Inhibit (Low Battery Voltage) [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] |
| DC-DC Converter | No temperature failure/internal failure/input voltage failure (no DTC is stored) | Not a condition*1 | Idle Stop Inhibit (DC-DC Converter) [PGM FI] |
*1: Refer to Disable Conditions for the Engine Restart After Auto Idle Stop.
*2: Except in a case of the engine started with the hood opened safety for the service technician).
*3: A "less than negative (-) number" means large vacuum pressure if the absolute number is large.
*4: It is variable depending on the atmospheric pressure.
*5: When the climate control system is turned on.
*6: When the ECON mode is on.
*7: USA and Canada models
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.