STOP AND START SYSTEM(for 3ZR-FAE) SYSTEM DESCRIPTION

  1. 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.

    1. 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

      Ignition Switch

      5 seconds or more have passed with the ignition switch ON

      Engine Coolant Temperature

      40 to 105°C (104 to 221°F)

      Ambient Temperature

      Higher than -5°C (23°F)

      Driver Door

      3 seconds have elapsed after driver door closed

      Driver Seat Belt

      3 seconds have elapsed after driver seat belt fastened

      Vehicle Stability Control System

      Normal

      Brake Booster Vacuum

      Sufficient

      Brake Master Cylinder Fluid Pressure

      1.5 MPa (15.2 kg/cm2, 2.2 psi) (changes according to gradient)

      Shift Position

      After shift lever is operated and 1 second elapses, shift lever is in position other than P, N or R

      CVT Oil Temperature

      25 to 111°C (77 to 231.8°F)

      Stop and Start System Cancel Switch (Ecorun Cancel Switch Assembly)

      Off (System control is not prohibited)

      Vehicle Speed

      0 km/h (0 mph) (After the engine warms up)

      Road Grade

      -8° to +8°

      Engine Speed

      1250 rpm or less

      Hood

      3 seconds have elapsed after hood closed

      Battery Voltage

      • When using specified battery:

      • Higher than 7.65 V when starter begins operation and higher than 7.66 V when cranking

      • When using non-specified battery:

      • Higher than 8.92 V when starter begins operation and higher than 8.92 V when cranking

      Battery Temperature*1

      -10 to 70°C (14 to 158°F)

      Battery Integrated Current*2

      1. 0 A-sec or higher: After engine started by ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) operation

      2. Integrated current value has increased to 0 A-sec or higher at least once after ignition switch ON:

        Tip:

        • Engine is stopped until the following conditions are not met:

        • Higher than -13478 A-sec: "Status of Battery Charge Control"*3 is Charge Control Coordination Mode or Stop and Start Standalone Mode

        • Higher than -6048 A-sec: "Status of Battery Charge Control"*3 is Low Temperature Mode and "Battery Fulid Temperature" is between 3°C (37.4°F) and 11°C (51.8°F)

        • Higher than -3974 A-sec: "Status of Battery Charge Control"*3 is Low Temperature Mode and "Battery Fulid Temperature" is between -1°C (30.2°F) and under 3°C (37.4°F)

        • Higher than 0 A-sec: "Status of Battery Charge Control"*3 is Stop and Start Restriction Mode or Temperature High/Low Mode

      Air Conditioning

      Other than when stop and start control is prohibited

      Heater

      • One of the following conditions is met:

      • Blower switch is off

      • Blower switch is on when the ambient temperature is higher than 10°C (50°F), the engine coolant temperature is higher than 55°C (131°F) or the room temperature is 5°C (41°F) lower than the set temperature

      • Blower switch on, air conditioning switch off and a certain amount of time has elapsed after engine restarted by stop and start control

      Steering Operation

      45 deg/s or less
      Tip:

      • *1: When the battery temperature is below -15°C (5°F), or 75°C (167°F) or higher, stop and start control is prohibited. When the battery temperature returns to -10°C (14°F) or higher, or below 70°C (158°F), stop and start control is permitted.

      • *2: Read the Data List item "Integrated Current" or "Oper Permission (Integrated Current)" when checking the integrated current value

        Click here

      • *3: Please refer to the Data List "Status of Battery Charge Control" for information about the status of the battery charge control.

    2. 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 (Brake booster vacuum changes in accordance with brake fluid pressure (brake pedal effort))

      Engine Hood Courtesy Switch (Hood Lock Assembly)

      Engine hood courtesy switch (hood lock assembly) malfunctioning

      SFI System

      Malfunction in SFI system is detected

      Oil Pump Assembly with Motor

      Oil pump assembly with motor (continuously variable transaxle assembly) malfunctioning

      Power Steering System

      Malfunction in power steering system is detected

      Vehicle Stability Control System

      Malfunction in vehicle stability control system is detected

      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:

      • A/C switch, blower switch: ON

      • Defogger switch: ON

      • Blower switch turned off during auto control or blower mode changed to manual

      Battery

      Battery performance or voltage drops

      Battery Integrated Current*1

      • -14342 A-sec or less: "Status of Battery Charge Control"*2 is Charge Control Coordination Mode or Stop and Start Standalone Mode

      • -6912 A-sec or less: "Status of Battery Charge Control"*2 is Low Temperature Mode and "Battery Fluid Temperature" is between 3°C (37.4°F) and 11°C (51.8°F)

      • -4838 A-sec or less: "Status of Battery Charge Control"*2 is Low Temperature Mode and "Battery Fluid Temperature" is between -1°C (30.2°F) and under 3°C (37.4°F)

      • -864 A-sec or less: "Status of Battery Charge Control"*2 is Stop and Start Restriction Mode or Temperature High/Low Mode

      Vehicle Speed

      Vehicle speed signal is input (Vehicle stopped on a slope, etc.)

      Driver Door

      Open

      Driver Seat Belt

      Driver seat belt is unfastened

      Steering Wheel

      Steering wheel turned 25 deg or more

      Brake Master Cylinder Fluid Pressure

      Brake pedal released (brake fluid pressure decreases) or 10 MPa (102 kgf/cm2, 1450 psi) or higher

      Accelerator Pedal

      Accelerator pedal is depressed
      Tip:

      • *1: Read the Data List item "Integrated Current" or "Oper Permission (Integrated Current)" when checking the integrated current value

        Click here

      • *2: Please refer to the Data List "Status of Battery Charge Control" for information about the status of the battery charge control.

  2. SYSTEM PROHIBITION CONTROL

    The engine stop and start ECU prohibits stop and start control by the stop and start system according to the table below. The prohibition conditions are specified for each system.

    System

    Prohibition Condition

    Vehicle State

    Restoration Condition

    Prohibition Condition Check Timing

    Engine

    Engine coolant temperature less than 40°C (104°F)

    Engine has not warmed up

    Engine coolant temperature 40 between 105°C (104°F to 221°F)

    Always

    Idle speed learning has not completed

    Stop and start control prohibited until idle speed learning completes

    Idle speed learning has completed

    Always

    Brake

    Brake booster vacuum decreases

    Brake booster vacuum decreases due to pumping the brakes, etc.

    Normal brake booster vacuum is reached

    Every time the vehicle stops

    Brake master cylinder fluid pressure decreases

    Brake pedal depressed lightly

    Brake pedal depressed more

    Every time the vehicle stops

    Hill-start Assist Control

    Brake control system malfunction

    DTC detected

    Brake control system returns normally

    Always

    When hill-start assist control prohibition is necessary

    Vehicle speed is 3 km/h (1.8 mph) or more

    Vehicle is being stopped (vehicle speed is below 3 km/h (1.8 mph))

    Always

    Communication between engine stop and start ECU and skid control ECU (brake actuator assembly) is invalid

    Communication invalid

    Communication between engine stop and start ECU and skid control ECU (brake actuator assembly) is valid

    Always

    Gradient of Road Surface

    Outside the permission gradient range (vehicle front and rear road surface incline +8° or higher or -8° or lower)

    Vehicle front and rear road surface incline +8° or higher or -8° or lower

    Within the permission gradient range (vehicle front and rear road surface incline within +/-8°)

    Always

    Air Conditioning

    Heater:

    • All of the following conditions are met:

    • Blower switch on and A/C switch on

    • Ambient temperature 10°C (50°F) or less

    • Engine coolant temperature 55°C (131°F) or less

    Heater performance decreases

    • Actual temperature higher than target temperature

    • Blower switch off

    While the heater is on

    Cooling function:

    • When blower switch and A/C switch are on and ambient temperature 23°C (73.4°F) or higher, the following condition is met (only when the ignition switch is first turned to ON):

    • Evaporator temperature 9°C (48.2°F) or higher

    Cooling performance decreases

    • Any of the following conditions have been met:

    • Actual temperature higher than target temperature

    • Blower switch is off

    • Air conditioning switch is off

    While the air conditioning system (cooling function) is on

    Defogger:

    1. Any of the following conditions are met:

    2. Defogger switch or blower switch on

    3. A certain amount of time after the engine is restarted by stop and start control when the ambient temperature is 10°C (50°F) or lower and the blower switch is on.

    1. Fogging of windows

    2. Air conditioning performance decreases

    3. Odor from air vents

    1. Any of the following conditions are met:

    2. Defogger switch or blower switch off

    3. A certain amount of time has elapsed after restarting the engine by stop and start control

    4. A certain amount of time has elapsed or the air conditioning switch is off after restarting the engine by the stop and start control

    While the air conditioning system (cooling function for defogger) is on

    Temporary start and start control:

    • Both of the following conditions are met:

    • Blower switch on

    • Evaporator temperature exceeds threshold (threshold varies with temperature, humidity and amount of solar radiation)

    Blower switch on

    Blower switch off and evaporator temperature within specified range

    Always

    Driver Door

    Driver door opened before engine stop by engine stop and start control

    Driver door courtesy switch ON signal input

    3 seconds have elapsed since driver door was closed

    Always

    Engine Hood

    Engine hood opened before engine stop by stop and start control

    Engine hood switch OFF signal input

    3 seconds have passed since engine hood was closed

    Always

    Seat Belt

    Driver seat belt not fastened before engine stop by engine stop and start control

    Driver seat belt buckle switch OFF signal input

    3 seconds have passed since driver seat belt was fastened

    Always

    Steering Wheel

    Steering wheel turned at a speed of 45 deg/s or more

    Steering wheel operation signal input

    Steering wheel being held

    Always

    CVT

    CVT oil temperature lower than 25°C (77°F) or 111°C (231.8°F) or higher

    CVT Oil Temperature signal is input

    An appropriate CVT fluid temperature is reached

    Always

    Shift Position

    Shift lever in P, N or R

    Shift position signal input

    Brake pedal depressed and shift lever in D or M

    Always

    Ambient Temperature

    Ambient temperature -6°C (21.2°F) or lower

    -

    Ambient temperature -5°C (23°F) or higher

    Always

    Power Source

    • When using specified battery:

    • Higher than 7.65 V when starter begins operation and higher than 7.66 V when cranking

    • When using non-specified battery:

    • Higher than 8.92 V when starter begins operation and higher than 8.92 V when cranking

    Battery charge insufficient or battery has deteriorated

    Battery charged or replaced

    Every time the engine started

    Battery temperature below -15°C (5°F) or 75°C (167°F) or higher

    Depends on Ambient temperature

    An appropriate battery temperature is reached (between -10 and 70°C (14 to 158°F))

    Always

    1. Battery integrated current*1 value meets one of the following conditions:

    2. Below 0 A-sec: After engine start by ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) operation

    3. Any of the following conditions are met:

      • -14342 A-sec or less: "Status of Battery Charge Control"*2 is Charge Control Coordination Mode or Stop and Start Standalone Mode

      • -6912 A-sec or less: "Status of Battery Charge Control"*2 is Low Temperature Mode and "Battery Fluid Temperature" is between 3°C (37.4°F) and 11°C (51.8°F)

      • -4838 A-sec or less: "Status of Battery Charge Control"*2 is Low Temperature Mode and "Battery Fluid Temperature" is between -1°C (30.2°F) and under 3°C (37.4°F)

      • -864 A-sec or less: "Status of Battery Charge Control"*2 is Stop and Start Restriction Mode or Temperature High/Low Mode

    • Heavy electrical load

    • High stop and start rate (Time that engine stopped by stop and start control is long)

    1. Battery integrated current*1 value meets both of the following conditions:

    2. 0 A-sec or higher: After engine start by ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) operation

    3. Any of the following conditions are met:

      • -13478 A-sec or higher: "Status of Battery Charge Control"*2 is Charge Control Coordination Mode or Stop and Start Standalone Mode

      • -6048 A-sec or higher: "Status of Battery Charge Control"*2 is Low Temperature Mode and "Battery Fluid Temperature" is between 3°C (37.4°F) and 11°C (51.8°F)

      • -3974 A-sec or higher: "Status of Battery Charge Control"*2 is Low Temperature Mode and "Battery Fluid Temperature" is between -1°C (30.2°F) and under 3°C (37.4°F)

      • 0 A-sec or higher: "Status of Battery Charge Control"*2 is Stop and Start Restriction Mode or Temperature High/Low Mode

    Always

    During refresh charge

    • Cable reconnected to negative (-) battery terminal

    • Refresh charge is performed for 30 minutes or longer for every 30 hours of driving

    30 minutes to 1 hour has elapsed

    Always

    Engine started with the engine hood open (for jump starting)

    -

    After ignition switch is turned off, ignition switch is turned to ON with hood closed

    Every time the engine started

    Idling Stop Rate

    Idling stop rate for one trip is 50% and total idling stop rate is 40%

    Vehicle is stopped for long time

    Idling stop rate has decreased due to vehicle being driven and engine idling

    Always
    Tip:

    • *1: Read the Data List item "Integrated Current" or "Oper Permission (Integrated Current)" when checking the integrated current value

    • *2: Please refer to the Data List "Status of Battery Charge Control" for information about the status of the battery charge control.

    • If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 40 minutes until refresh charge is completed and stop and start control operation is permitted.

    • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.

  3. 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 M

    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 M

    The engine starts, warning buzzer sounds and stop and start indicator light blinks

    The driver seat belt is unfastened

    The engine starts

  4. WARNING INDICATOR AND BUZZER OPERATION

    The driver is informed of the system control status and warnings by the stop and start indicator light, stop and start cancel indicator light and the buzzer.

    Table 1. Stop and Start Indicator and Buzzer Operation

    Item

    Condition

    Stop and start indicator light

    Stop and start cancel indicator light

    Buzzer

    For 3 seconds after the ignition switch 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

    The blinking interval 0.15 seconds*

    Does not come on

    Sounds*

    After engine started by stop and start control

    Driver door opened within 5 seconds of engine start

    The blinking interval 0.15 seconds*

    Does not come on

    Sounds*

    Control is prohibited by the stop and start system cancel switch (ecorun cancel 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 intervals.

    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 intervals.

    Does not sound
    A287227C01

    *a

    Stop and Start Indicator Light

    *b

    Stop and Start Cancel Indicator Light

    • *: Shift lever in D or M

  5. 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 malfunctions 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

    P2531

    • IG Switch

    • IG SW Abnoml

    Stop and start control prohibited

    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

    CLL (park/neutral position switch assembly) circuit

    Stuck on

    P1780

    • Neutral Switch

    • Neutral Switch Stuck ON

    • Neutral SW Abnoml (ON)

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Wire harness or connector

    • Park/neutral position switch assembly

    Stuck off

    P1780

    • Neutral Switch

    • Neutral Switch Stuck OFF

    • Neutral SW Abnoml (OFF)

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    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 M and engine stopped by stop and start control

    • Wire harness or connector

    • Engine hood courtesy switch (Hood lock assembly)

    Stuck off

    -

    Hood Courtesy Switch

    Stop and start control prohibited despite engine hood being closed

    BRVC/PB/BRE2 (vacuum sensor) circuit

    Open

    P1540

    • Brk Boost Sen Abnoml 1

    • Brk Boost Sen Abnoml 2

    • Brk Boost Sen Abnoml 3

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Wire harness or connector

    • Vacuum sensor assembly

    • Brake booster assembly

    • Check valve to connector tube hose

    Shorted

    P1540

    Remains at intermediate value

    P1541

    ECAN (stop and start system cancel switch (ecorun cancel switch assembly)) circuit

    Stuck on

    -

    Cancel Switch

    Stop and start control prohibited

    • Wire harness or connector

    • Stop and start system cancel switch (ecorun cancel switch assembly)

    Stuck off

    -

    Cancel Switch

    Stop and start control cannot be canceled by pressing the stop and start system cancel switch (ecorun cancel switch assembly)

    NOPM circuit

    OPM1 circuit

    OPO circuit

    (CVT oil pump assembly with motor)

    • Open

    • Shorted

    • Internal circuit malfunction

    • Battery

    P1538

    P1539

    • Oil Pump Relay

    • Oil Pump Status

    • Oil Pump Duty

    • State of Oil Pump Motor Rotation

    • Oil Pump Motor Rotation Frequency

    • Oil Pump Abnormality Judgment

    • Status of O/P Signal 1

    • Status of O/P Signal 2

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Wire harness or connector

    • Engine stop and start ECU

    • Oil pump assembly with motor (continuously variable transaxle assembly)

    CVT oil pump assembly with motor

    Oil pump assembly with motor malfunction

    P0942

    Oper Permission(AT/CVT)

    Stop and start control prohibited

    • Oil pump assembly with motor (continuously variable transaxle assembly)

    STA circuit

    Overcurrent

    P0617

    • Starter Relay Overcurrent

    • Starter Circuit Abnoml

    • Starter Circuit Open

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • BBC fuse

    • Wire harness or connector

    • ST NO. 1 relay

    • ST NO. 2 relay

    • Engine stop and start ECU

    Stuck on

    P1644

    • Wire harness or connector

    • ST NO. 1 relay

    • ST NO. 2 relay

    • Engine stop and start ECU

    Stuck off

    P1644

    BBC (backup boost converter) circuit

    Overcurrent

    B22C0

    • State of BBC

    • BBC Abnoml

    • BBC Overcurrent

    • BBC Check Result

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • BBC fuse

    • Wire harness or connector

    • Engine stop and start ECU

    • Battery

    • ECUs and sensors connected to BO1 and IGO1

    • Open

    • Shorted

    • Internal circuit malfunction

    • Battery

    P323B

    • State of BBC

    • BBC Duty

    • BBC Thermistor

    • BBC Abnoml

    • BBC Over Heat

    • BBC Power Low

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • BBC fuse

    • Wire harness or connector

    • Engine stop and start ECU

    • Battery

    VB- circuit

    Open

    P0560

    VB Voltage Low

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Wire harness or connector

    • Engine stop and start ECU

    ECU inner circuit

    Malfunction

    P0607

    -

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    Engine stop and start ECU

    Monitoring CPU circuit

    Malfunction

    P060A

    State of BBC

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    Engine stop and start ECU

    EEPROM

    Malfunction

    P062F

    EEPROM

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    Engine stop and start ECU

    Sensor power source circuit

    Malfunction

    P0641

    State of BBC

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    Engine stop and start ECU

    Starter delay circuit

    Malfunction

    P161D

    • Pinion Gear

    • Starter Motor

    • Starter Delay Circuit

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    Engine stop and start ECU
    Table 2. Effects on Vehicle due to Related System Malfunctions

    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

    • Oper Permission (ECM 1)

    • Oper Permission (ECM 2)

    Stop and start control prohibited

    SFI system

    Abnormal NE signal

    DTCs for SFI system output

    • NE Sensor Circuit Open 2

    • Crank Pos Sen Abnoml 3

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • SFI system (crank 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 (crank position sensor circuit)

    Charging system

    Battery state sensor assembly malfunction

    DTCs for charging system output

    • Battery Fluid Temperature

    • Integrated Current

    Stop and start control prohibited

    Charging system

    Vehicle stability control system

    VSC Running

    -

    ABS Running

    Stop and start control prohibited

    -

    Malfunction in wheel speed sensor

    Brake control system DTCs output

    • Vehicle Spd1 (ABS/VSC)

    • 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

    • Comm Err with EPS

    Stop and start control prohibited

    • Power steering ECU assembly

    • Torque sensor

    Seat belt warning system

    Malfunction in seat belt warning system

    -

    Oper Permission (Driver Side Buckle SW)

    • 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 (for driver side)

    • Wire harness or connector

    Driver door courtesy light switch circuit

    Malfunction in driver door courtesy light switch circuit

    -

    D 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)

    • Front door courtesy light switch assembly (for driver side)

    • Driver door courtesy light switch circuit

    Air conditioning system

    Malfunction in ambient temperature sensor

    Air conditioning system DTCs output

    Ambient Temp Sensor

    Stop and start control prohibited

    Ambient temperature sensor circuit

    Brake vacuum

    Brake booster vacuum drops

    -

    • Brake Boost Pressure

    • Brake Negative Pressure

    • Brk Boost Sen Abnoml 1

    • Brk Boost Sen Abnoml 2

    • Brk Boost Sen Abnoml 3

    Stop and start control prohibited

    • Brake booster assembly vacuum

    • Brake booster assembly

    • Vacuum sensor assembly

    • Check valve to connector tube hose

    Power source

    Backup boost converter malfunction

    P323B

    • State of BBC

    • BBC Duty

    • BBC Thermistor

    • BBC Abnoml

    • BBC Over Heat

    • BBC Power Low

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • BBC fuse

    • Wire harness or connector

    • Engine stop and start ECU

    • Battery

    Charging system malfunction

    -

    Alternator Status

    Stop and start control prohibited

    Charging system

    Low voltage

    P0562

    Battery Abnoml

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Wire harness or connector

    • Battery

    • Relay

    Number of starter operations

    Exceeds the specified limit

    P1545

    Starter Count Abnoml

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Starter assembly replacement is required.

    • ST NO. 2 relay replacement is required.

    • Fuse replacement is required.

    Starter signal malfunction

    Signal does not match with the starter switch

    P1545

    -

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Wire harness or connector

    • Engine stop and start ECU

    Jump start

    Engine started with the engine hood open

    -

    Eng Start Req (Engine Hood Open)

    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 battery

    • Engine hood courtesy switch (Hood lock assembly)

    CAN communication

    Communication interrupted

    U0100

    U0121

    U0126

    U0131

    U0140

    U0151

    U0155

    U0164

    -

    • Stop and start control prohibited

    • Stop and start cancel indicator light blinks

    • Applicable wire harness or connector

    • Applicable ECU