Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000002EM8F
Model Year Start: 2024 Model: RAV4 Prod Date Range: [10/2023 -           ]
Title: STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION; 2024 MY RAV4 [10/2023 -        ]

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.

(a) 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 second or more have passed with the ignition switch ON

Engine Coolant Temperature

40 to 105°C (104 to 221°F)

Ambient Temperature

-5°C (23°F) or higher

Driver Door

3 seconds have elapsed after driver door closed

Driver Seat Belt

3 seconds have elapsed after driver seat belt fastened

Electronically Controlled Brake System

Normal

Brake Booster Vacuum

Vacuum meets the specified condition (42.5 kPa (319 mmHg, 12.6 in.Hg) or more on a level surface) (Brake booster vacuum varies according to brake master oil pressure)

Brake Master Cylinder Fluid Pressure*1

1.1 MPa or higher (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 P or D

Drive Mode

NORMAL or ECO mode

Automatic Transaxle Fluid Temperature
  • 25 to 110°C (77 to 230°F)
  • Other than when stop and start control is prohibited due to insufficient automatic transaxle fluid pressure, etc.

Stop and Start System Cancel Switch (Eco Run Cancel Switch Assembly)

Off (System control is not prohibited)

Vehicle Speed

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

Road Grade

Road Surface gradient condition is permitted (road surface gradient is within -1.02m/s2 to 1.36 m/s2)

Engine Speed

1250 rpm or less

Hood

3 seconds have elapsed after hood closed

Battery Voltage*2

When using specified battery:

  • 8.7 V or higher when starter begins operation and 8.3 V or higher when cranking

When using non-specified battery:

  • 8.92 V or higher when starter begins operation and 8.92 V or higher when cranking

Battery Fluid Temperature*3
  • -10°C or higher and 60°C or less (14°F or higher and 140°F or less)
  • When the intake air temperature sensor is normal

Battery Integrated Current*4

One of the following conditions is met:

  • -4554 A-sec or more: "Status of Battery Charge Control"*5 is Charge Control Coordination Mode, Stop and Start Standalone Mode or Low Temperature Mode
  • 0 A-sec or more: "Status of Battery Charge Control"*5 is Stop and Start Restriction Mode or Temperature High/Low Mode
  • When the battery sensor current is normal
  • When LIN communication is normal

Battery Charge Control*5

The value of Data List item Status of Battery Charge Control*5 is Charge Control Coordination Mode, Stop and Start Standalone Mode, Stop and Start Restriction Mode, Temperature High/Low Mode or Low Temperature Mode

Idling Stop Rate /

Total Idling Stop Rate
  • Idling stop rate for one trip: 50% or less (Varies according to battery fluid temperature).
  • Total idling stop rate: Less than 40%

HINT:

  • Idling stop rate: Idling stop rate for ignition on time (1 trip)
  • Total idling stop rate: Idling stop rate for total ignition on time

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, or
    • Engine coolant temperature is higher than 55°C, or
    • Vehicle cabin temperature is higher than the set temperature - 5°C
  • 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
  • Automatic transmission control learning has completed

Dynamic Radar Cruise Control System

When the dynamic radar cruise control (w/ Full Speed Range Following Function) system is operating and the brake hold function is operating, the preceding vehicle starts off or the user performs a resume operation (starts off the vehicle).

HINT:

  • *1: Enough brake force is applied to prevent the vehicle from moving when the engine is started again.
  • *2: 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 (HoodClosed)" is performed using the GTS
  • *3: When the battery fluid temperature is -15°C (5°F) or less, or 75°C (167°F) or higher, stop and start control is prohibited. When the battery fluid temperature returns to -10°C (14°F) or higher, and 60°C (140°F) or less, stop and start control is permitted.
  • *4: Read the Data List items "Integrated Current" and "Stop&Start Operating Permission (Integrated Current)" when checking the integrated current value.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: DATA LIST / ACTIVE TEST

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

(b) 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 (0.38 kg/ cm2, 5.4 psi)) (Brake booster vacuum changes in accordance with brake fluid pressure (brake pedal effort))

SFI System

Malfunction in SFI system is detected

Power Steering System

Malfunction in power steering system is detected

Vehicle Stability Control System

Malfunction in vehicle stability control system is detected

Oil Pump with Solenoid Assembly

Oil pump with solenoid assembly 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

Battery

Battery voltage drops (11.8 V or less)

Battery Integrated Current*

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 Master Cylinder Fluid Pressure

Brake master cylinder fluid pressure decreases (Brake pedal released)

Accelerator Pedal

Accelerator pedal is depressed

Shift Position

Move the shift lever from D to other position

Stop and Start System Cancel Switch (Eco Run Cancel Switch Assembly)

When stop and start system cancel switch (eco run cancel switch assembly) turn from off to on

Drive Mode

except NORMAL or ECO mode

Dynamic Radar Cruise Control System

When the dynamic radar cruise control (w/ Full Speed Range Following Function) system is operating and the brake hold function is operating, the preceding vehicle starts off or the user performs a resume operation (starts off the vehicle).

HINT:

  • *: Read the Data List items "Integrated Current" and "Stop&Start Operating Permission (Integrated Current)" when checking the integrated current value.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: DATA LIST / ACTIVE TEST

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 to 105°C (104 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

Engine catalytic warm up

Engine catalytic warm up is being performed

Engine catalytic warm up is completed

Each time engine is started or vehicle is stopped

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 permitted gradient range (vehicle front and rear road surface incline 1.36 m/s2 or higher or -1.02 m/s2 or lower)

Vehicle front and rear road surface incline 1.36 m/s2 or higher or -1.02 m/s2 or lower

Within the permitted gradient range (vehicle front and rear road surface incline -1.02 m/s2 to 1.36 m/s2)

Always

Air Conditioning

Heater:

All of the following conditions are met:

  • Blower switch is on
  • Ambient temperature 10°C (50°F) or less
  • One of the following conditions is met:
    • Engine coolant temperature 55°C (131°F) or less
    • Cabin temperature lower than set temperature by -5°C (-9°F) or less (only standard control (NORMAL) mode)

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 is on and ambient temperature 23°C (73.4°F) or higher, either of the following conditions is met:

  • Evaporator temperature 9°C (48.2°F) or higher
  • Cabin temperature higher than set temperature by 3°C (5°F) or higher, or blower level 16 or higher (only standard control (NORMAL) mode)

Cooling performance decreases

Any of the following condition shave been met:

  1. Actual temperature higher than target temperature
  2. Blower switch is off
  3. Air conditioning switch is off

While the air conditioning system (cooling function) is on

Defogger:

Both of the following conditions are met:

  • Defogger switch on
  • Blower switch on

Fogging of windows

Defogger switch or blower switch off

Always

Temporary stop and start control:

All of the following conditions are met:

  • Blower switch on
  • Evaporator temperature exceeds threshold (threshold varies with temperature, humidity and amount of solar radiation)
  • Certain amount of time has elapsed after the engine is stopped by stop and start control (threshold value varies with stop and start operation conditions)

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

Automatic Transaxle Assembly

Automatic transaxle fluid temperature: Below 25°C (77°F) or 110°C (230°F) or higher

Automatic transaxle fluid temperature signal input

Permission automatic transaxle fluid temperature range reached

Always

Shift Position

Shift lever in other than D

Shift position signal input

Brake pedal depressed and shift lever in D

Always

Drive Mode

Drive mode is other than ECO, NORMAL and SPORT mode

Drive mode signal input

Drive mode is NORMAL and ECO mode

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:

  • Below 8.7 V when starter begins operation and below 8.3 V when cranking

When using non-specified battery:

  • Below 8.92 V when starter begins operation and below 8.92 V when cranking

Battery charge insufficient or battery has deteriorated

Battery charged or replaced*

*: When prohibited, the prohibition condition continues until the ignition switch is turned off

Every time the engine is started

Battery fluid temperature -15°C (5°F) or less, or 75°C (167°F) or higher

Depends on environmental temperature

Battery fluid temperature is reached (-10°C (14°F) or higher and 60°C (140°F) or less)

Always

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

  • -5544 A-sec or less: "Status of Battery Charge Control"*2 is Charge Control Coordination Mode, Stop and Start Standalone Mode or Low Temperature Mode
  • -990 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)

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

  • -4554 A-sec or higher: "Status of Battery Charge Control"*2 is Charge Control Coordination Mode, Stop and Start Standalone Mode or Low Temperature Mode
  • 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 battery terminal
  • Refresh charge is performed for 30 minutes or more for every 30 hours of driving
  • Cable reconnected to battery terminal: 5 to 60 minutes
  • Periodic refresh charge: 30 to 60 minutes

Always

Engine started with the engine hood open

-

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

Every time the engine is started

Idling Stop Rate

Idling stop rate for one trip:

  • Battery fluid temperature 3°C (37°F) or higher: more than 50%
  • Battery fluid temperature 0 to 3°C (32 to 37°F): more than [(25 / 3) x Battery fluid temperature (°C) + 25]%
  • Battery fluid temperature less than 0°C (32°F): more than (Battery fluid temperature (°C) + 25)%

Total idling stop rate:

  • more than 40%

Vehicle is frequently stopped

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

Always

HINT:

  • *1: Read the Data List items "Integrated Current" and "Stop&Start Operating 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 battery terminal, stop and start control is prohibited until refresh charge is completed.

    In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item Status of Battery Charge Control changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)

  • If the Techstream is not available and the Data List item Status of Battery Charge Control cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

    If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

  • After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
  • 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.

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

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

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

The driver seat belt is unfastened

The engine starts

WARNING INDICATOR AND BUZZER OPERATION

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.

Stop and Start Indicator and Buzzer Operation

Item

Condition

Stop and Start Indicator

Stop and Start Cancel Indicator

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 0.3 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 0.3 seconds*

Does not come on

Sounds*

Control is prohibited by the stop and start system cancel switch (eco run 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

The blinking interval 1 second

Does not sound

Starter assembly life

Number of times the starter has been operated exceeds its limit

Does not come on

The blinking interval 1 second

Does not sound

*a

Stop and Start Indicator

*b

Stop and Start Cancel Indicator
  • *: 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 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

"Non-Dedicated Battery"

A non-specified battery for the stop and start system may have been installed.

"Battery Charging"
  • The battery charge amount may be low.
  • The battery voltage is low
  • The battery fluid temperature is high
  • A refresh charge may be occurring.

"Stop & Start System Unavailable"
  • The Stop & Start System is temporarily disabled.
  • The engine may have been started with the hood opened.

"In Preparation"
  • The vehicle is being driven in a high altitude area.
  • The brake booster vacuum is low.

"For Climate Control"
  • The air conditioning system is being used when the ambient temperature is high or low.
  • Windshield defogger is pressed.

"Press Brake More to Active"

The brake pedal is not depressed enough.

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 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

IG2*1 circuit

IGP*2 circuit

Open

P253014

IG Switch

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

P085014

Neutral Switch

Stop and start control prohibited
  • Wire harness or connector
  • Park/Neutral position switch assembly

Stuck off

P085012

Stop and start control prohibited

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 and engine stopped by stop and start control
  • Wire harness or connector
  • Engine hood courtesy switch (hood lock assembly)

Stuck off

-

Stop and start control prohibited despite engine hood being closed

ECAN (stop and start system cancel switch (eco run cancel switch assembly)) circuit

Stuck on

-

Stop&Start Cancel Switch

Stop and start control prohibited
  • Wire harness or connector
  • Stop and start system cancel switch (eco run cancel switch assembly)

Stuck off

-

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

BRVC/PB/BRE2 (vacuum sensor) circuit

Open

P055515

Brake Boost Pressure

Stop and start control prohibited
  • Wire harness or connector
  • Vacuum sensor assembly
  • Brake booster assembly
  • Vacuum hose

Shorted
  • P055511
  • P055515

Remains at intermediate value
  • P055500
  • P05552A

EMOP circuit

EGND circuit

(Oil pump with solenoid assembly)
  • Open
  • Shorted
  • Internal circuit malfunction
  • P279612
  • P279614
  • P279796
  • Oil Pump Relay
  • Stop&Start Operating Permission (Electromagnetic Oil Pump)

Stop and start control prohibited
  • Wire harness or connector
  • Transmission wire
  • Engine stop and start ECU
  • Electromagnetic oil pump
  • Engine stop and start solenoid filter

Oil pump with solenoid assembly

Oil pump with solenoid assembly malfunction

P094296

Stop&Start Operating Permission (AT/CVT)

Stop and start control prohibited

Oil pump with solenoid assembly

STA circuit

Overcurrent

P061511

-

Stop and start control prohibited
  • BBC NO. 1 fuse
  • BBC NO. 2 fuse
  • Wire harness or connector
  • ST NO. 1 relay
  • Engine stop and start ECU
  • Open
  • Shorted

P061515
  • Wire harness or connector
  • ST NO. 1 relay
  • Engine stop and start ECU

Stuck on

P164400

Stuck off

P164400

BBC (backup boost converter) circuit

Overcurrent

X087A

State of BBC

Stop and start control prohibited
  • BBC NO. 1 fuse
  • BBC NO. 2 fuse
  • Wire harness or connector
  • Engine stop and start ECU
  • Battery
  • ECUs and sensors connected to B41, B42, B43, IG41 and EMOP
  • Open
  • Shorted
  • Internal circuit malfunction
  • Battery
  • P323A00
  • P323A16
  • P323B14
  • P323B29
  • P323B38

State of BBC

Stop and start control prohibited
  • BBC NO. 1 fuse
  • BBC NO. 2 fuse
  • Wire harness or connector
  • Engine stop and start ECU
  • Battery

Monitoring CPU circuit

Malfunction

P060629

State of BBC

Stop and start control prohibited

Engine stop and start ECU

Internal memory

Internal Control Module Random Access Memory (RAM) Error Data Memory Failure

P060444

-

Stop and start control prohibited

Engine stop and start ECU

NVRAM

NVRAM access Malfunction

P062F44

-

-

Engine stop and start ECU
  • *1: Except TMC Made
  • *2: for TMC Made

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
  • 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

Vehicle stability control system

Vehicle stability control 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 (Rack and pinion power steering gear assembly)
  • 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)
  • 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 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
  • P323A00
  • P323A16
  • P323B14
  • P323B29
  • P323B38

State of BBC

Stop and start control prohibited
  • BBC NO. 1 fuse
  • BBC NO. 2 fuse
  • Wire harness or connector
  • Engine stop and start ECU
  • Battery

Charging system malfunction

-

-*

Stop and start control prohibited

Charging system

Charging control system

X0879

-

-

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 NO. 1 relay replacement is required
  • Fuse replacement is required

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 battery
  • Engine hood courtesy switch (hood lock assembly)

CAN communication

Communication interrupted
  • U010087
  • U012987
  • U014087
  • U015187
  • U016487

-

Stop and start control prohibited
  • Applicable wire harness or connector
  • Applicable ECU
  • *: Check for any malfunctions in the charging system on the multi-information display