STOP AND START SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    Tech Tips

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


    1. Warm up the engine.

    2. Turn the engine switch off.

    3. Connect the GTS to the DLC3.

    4. Start the engine.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Stop and Start / Data List.

    7. According to the display on the GTS, read the Data List.

    Stop and Start
    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    Eco Warning

    Stop and start indicator light status:

    ON/OFF

    • ON: Idling stop being performed

    • OFF: Idling stop not being performed

      (When system is normal)

    		 ON: Any malfunction occurs in the system and the stop and start indicator light is blinking.
    Coolant Temp

    Engine coolant temperature:

    Min.: 16°C (60.8°F), Max.: 127°C (260.6°F)

    		 75 to 95°C (167 to 203°F): Idling after engine warmed up This is sent from the ECM.
    Engine Spd (ECM)

    Engine speed signal from ECM via CAN communication:

    Min.: -25600 rpm, Max.: 12800 rpm

    		 750 to 850 rpm: When idling after warm-up, shift lever in N and no load This is sent from the ECM.
    Engine Spd (NE Signal)

    Engine speed signal from ECM via direct line:

    Min.: -25600 rpm, Max.: 25599 rpm

    		 750 to 850 rpm: When idling after warm-up, shift lever in N and no load The pulse signal sent is from NEO terminal of the ECM.
    Deceleration Sens Offset Val

    Deceleration sensor offset value:

    Min.: -1176.008 m/s2, Max.: 1176.007 m/s2

    -0.903 to 0.903 m/s2: After the deceleration sensor zero point learning completion

    		 -
    Deceleration Sens Calibration

    Deceleration sensor calibration status:

    Incmpl / Running / Compl / Err1 / Err2 / Err3

    		 Compl: After the deceleration sensor zero point learning completion -
    Gradient of Road Surface

    Degree of road gradient:

    Min.: -10.24 m/s2, Max.: 10.16 m/s2

    -1.4 to 1.4 m/s2: Vehicle is stopped on level surface

    		 -
    Battery Voltage

    Battery voltage:

    Min.: 0 V, Max.: 20 V

    		 9 to 14 V: Idling -
    Battery Fluid Temperature

    Battery fluid temperature:

    Min.: -40°C (-40°F), Max.: 100°C (212°F)

    		 Changes according to actual temperature: Driving after engine warmed up -
    Battery Temp (Start)

    Battery temperature at engine start:

    Min.: -40°C (-40°F), Max.: 100°C (212°F)

    		 Same as temperature around battery at engine start (after engine start) -
    Oper Permission (AT/CVT)

    Permission of stop and start control by automatic transaxle system:

    NG/OK

    		 OK: Automatic transaxle system normal and Automatic transaxle fluid temperature 25°C (77°F) or higher This is sent from the ECM through CAN communication
    Oper Permission (AT/CVT 2)

    Permission of stop and start control by automatic transaxle system:

    NG/OK

    		 OK: Oil pump assembly with motor (automatic transaxle assembly) normal

    This is sent from the ECM through CAN communication

    Tech Tips

    The oil pump assembly with motor (automatic transaxle assembly) is built into the automatic transaxle assembly.
    Engine Type Information

    Information on the engine type from the SFI system:

    Avail/Not Avi

    		 Avail: Information of the engine type received from the ECM through CAN communication Not Avi is displayed if improper engine type information is received from the ECM via CAN communication.
    Starter Type

    Starter assembly type:

    Other than Tandem Starter/ Tandem Starter

    		 Tandem Starter -
    D Courtesy Switch Signal

    Driver door courtesy switch signal:

    ON/OFF

    • ON: Driver side door opened

    • OFF: Driver side door closed

    		 -
    Hood Courtesy Switch

    Hood courtesy switch signal:

    ON/OFF

    • ON: Engine hood closed

    • OFF: Engine hood opened

    		 -
    Neutral Switch

    Park/neutral position signal:

    ON/OFF

    • ON: Shift lever in P or N

    • OFF: Shift lever not in P or N

    		 -
    Pinion Gear

    Starter pinion status:

    ON/OFF

    • ON: Starter pinion operate

    • OFF: Starter pinion not operated

    		 -
    Starter Motor

    Starter motor status:

    ON/OFF

    • ON: Cranking

    • OFF: Not cranking

    		 -
    TC Terminal

    TC and CG terminals of DLC3:

    ON/OFF

    • ON: TC and CG terminals of DLC3 are connected

    • OFF: TC and CG terminals of DLC3 are disconnected

    		 -
    Drive Mode Status

    Drive mode status:

    ON/OFF

    • ON: Drive mode is SPORT

    • OFF: Drive mode is ECO or NORMAL

    		 -
    Cancel Switch

    Stop and start cancel switch assembly signal:

    ON/OFF

    • ON: Stop and start cancel switch assembly pressed

    • OFF: Stop and start cancel switch assembly not pressed

    		 -
    IG Switch

    Engine switch:

    ON/OFF

    		 ON: Engine switch on (IG) -
    Idle

    Engine idling status:

    ON/OFF

    • ON: Accelerator pedal fully released

    • OFF: Accelerator pedal depressed

    		 This is sent from the ECM.
    Engine Start (IG SW)

    Engine start by engine switch:

    ON/OFF

    • ON: Engine start by engine switch assembly operation

    • OFF: Except engine start by engine switch assembly operation

    		 Indicates starter operation by operation of the engine switch assembly
    Stop Light SW (ECM)

    Stop light switch assembly signal from ECM:

    ON/OFF

    • ON: Brake pedal depressed

    • OFF: Brake pedal released

    		 This is sent from the ECM.
    Stop Light SW (ABS/VSC)

    Stop light switch assembly signal from brake system:

    ON/OFF

    • ON: Brake pedal depressed

    • OFF: Brake pedal released

    		 This is sent from the skid control ECU (brake actuator assembly).
    Engine Starter Signal

    Starter signal status:

    ON/OFF

    • ON: Cranking

    • OFF: Not cranking

    		 This is sent from the ECM.
    Buzzer

    Buzzer status:

    ON/OFF

    • ON: Buzzer ON

    • OFF: Buzzer does not sound

    		 Refer to warning buzzer operation conditions.
    Indicat. Light Eco

    Stop and start indicator light status:

    ON/OFF

    • ON: Stop and start indicator light on or blinking

    • OFF: Stop and start indicator light off

    		 -
    Oil Prs Warn Light Prohibit

    Oil pressure warning light status:

    Permit/Prohibit

    • Prohibit: During engine stop by stop and start control

    • Permit: Not during engine stop by stop and start control

    		 Engine stop and start ECU informs the combination meter assembly that the oil pressure warning light does not come on during engine stop by stop and start control.
    Brake Press Hold Req

    Brake holding pressure requests during the stop and start control:

    ON/OFF

    • ON: Shift lever in D and engine stopped by stop and start control

    • OFF: Shift lever in D and engine not stopped by stop and start control

    		 ON is displayed when a brake fluid pressure holding request is sent during stop and start control or the engine is stopped by stop and start control with the shift lever in D.
    Brake Pressure Hold Request Status

    Brake fluid pressure holding status during stop and start control:

    Normal Release / Quick Release / Hold / Immediate Release

    		 - -
    S&S Cancel Light Code

    Transaxle code from the engine stop and start ECU to the combination meter assembly:

    0: extinction / 1: lighting / 2: blink / 3: - / 4: DTC output

    • 0: Stop and start cancel indicator light off

    • 1: Stop and start cancel indicator light on

    		 Stop and start cancel indicator light on/blinking/off request sent to combination meter assembly.
    Starter Operation #

    Number of starter operations (count record):

    Min.: 0, Max.: 1048575

    		 - -
    Number of Engine Starts (IG-ON)

    The number of starter operations by engine switch:

    Min.: 0, Max.: 16777215

    		 - -
    Number of Engine Starts (Stop & Start)

    The number of starter operations by stop and start control:

    Min.: 0, Max.: 16777215

    		 - -
    Total Number of Engine Starts

    The total number of starter operation:

    Min.: 0, Max.: 16777215

    		 - -
    Vehicle Spd 1 (ABS/VSC)

    Vehicle speed signal from skid control ECU (brake actuator assembly) via CAN communication:

    Min.: 0 km/h (0 mph), Max.: 327.67 km/h (203.6 mph)

    		 0 km/h (0 mph): Vehicle is stopped -
    Steering Angle

    Steering angle:

    Min.: -49152 deg, Max.: 49150.5 deg

    		 - -
    Steering Angle Velocity

    Steering wheel turning speed:

    Min.: -32768 deg/s, Max.: 32767 deg/s

    		 - -
    Steering Wheel Torque

    Steering wheel torque

    Min.: -327.68 deg/s, Max.: 327.67 Nm

    		 - -
    Battery Current

    Battery current:

    Min.: -125 A, Max.: 124.99 A

    		 - -
    Brake Boost Pressure

    Brake booster pressure (absolute pressure):

    Min.: -640 kPa (-4800 mmHg, -189 in.Hg), Max.: 112 kPa (840 mmHg, 33.0 in.Hg)

    		 Approx. 100 kPa (750 mmHg, 29.5 in.Hg): Engine switch on (IG), brake pedal depressed several times (differs according to atmospheric pressure) -
    Brake Negative Pressure

    Brake booster vacuum (negative pressure):

    Min.: -640 kPa (-4800 mmHg, -189 in.Hg), Max.: 639.98 kPa (6.53 kgf/cm2, 92.8 psi)

    Approx. 0 kPa (0 kgf/cm2, 0 psi): Engine switch on (IG), brake pedal depressed several times

    		 This item cannot be checked if an error occurs in communication with the ECM.
    Ambient Temp Sensor

    Ambient temperature:

    Min.: -80°C (-112°F), Max.: 79.9°C (175.8°F)

    		 Close to ambient temperature -
    Stop&Start of Eng State

    Stop and start control status:

    IG / Run / Stopreq / Stop / Restart

    • IG: Before engine started

    • Run: Engine running

    • Stopreq: Engine stop requested

    • Stop: Engine stopped (by stop and start control)

    • Restart: Engine restarted

    		 -
    Stop & Start A/C Mode

    Selected air conditioning mode:

    Undefined / Normal / S&S Prioritized / A/C Prioritized

    		 - -
    Idling Stop Rate

    Rate of the idling stop time to the entire engine switch on (IG) time:

    Min.: 0 %, Max.: 100 %

    		 - -
    Total Idling Stop Rate

    Rate of idling stop time to the entire engine switch on (IG) time:

    Min.: 0%, Max.: 100%

    		 - -
    Integrated Current

    Battery integrated current:

    Min.: -268434.45 A-sec, Max.: 268435.45 A-sec

    		 Differs according to the vehicle condition (charge/discharge conditions) Refer to "Regarding Battery Integrated Current" below for details.*
    Cranking Time

    Engine cranking time (in current trip) (When minimum voltage is detected at engine start):

    Min.: 0 ms, Max.: 134215 ms

    		 300 to 3000 ms: Duration of starter operation by stop and start control -
    Min Voltage (Cranking)

    Minimum battery voltage while engine cranking (in current trip):

    Min.: 0 V, Max.: 327.67 V

    		 6 to 11 V Lowest battery voltage measured after the starter starts operating.
    Min Volt (After Cranking)

    Minimum battery voltage just after engine cranking:

    Min.: 0 V, Max.: 327.67 V

    		 6 to 11 V Minimum battery voltage while the starter operating.
    Master Cylinder Pressure

    Brake fluid pressure:

    Min.: 0 MPa , Max.: 327.67 MPa

    		 0 to 5 MPa (when normal pedal effort is applied) -
    Status of Battery Charge Control

    Battery charge control status:

    Change Control Coordination Mode / Stop and Start Standalone Mode / Refresh Charge Mode / Stop and Start Restriction Mode / Temperature High / Low Mode / Abnormal Mode / Battery Condition Judgment Mode / Low Temperature Mode

    		 - -
    State of BBC

    Backup boost converter status:

    Cycle Err / Overvol / Overload / Normal / Low Vol / Duty Err / S&S Sensor Electric Supply Low / S&S CPU Malfunction / BBC Overcurrent / S&S Starter Overcurrent / S&S Reduced Voltage Reset

    		 Normal: Backup boost converter operating normally

    • Duty Err:


      • Abnormal duty ratio is detected.

    • Cycle Err:


      • Abnormal output voltage cycle is detected.

    • Low Vol:


      • A decrease in the voltage of the control IC power source within the backup boost converter is detected when engine switch is turned on (IG).

    • Overload:


      • Overcurrent is detected.

    • Overvol:


      • When the engine switch is on (IG):


        1. Overvoltage is detected at the control IC power source in the backup boost converter.

        2. Overheating is detected at the control IC power source in the backup boost converter.

      • When boosting:


        1. Error is detected in the feedback circuit in the backup boost converter.

        2. Too high or low output voltage.
    State of External BBC

    External backup boost converter status:

    Cycle Err / Overvol / Overload / Normal / Low Vol / Duty Err / Low Temp

    		 - -
    External BBC Overcurrent History

    External backup boost converter overcurrent history:

    No / Yes

    		 - -
    BBC Check Result

    Backup boost converter check result:

    Normal / Abnormal

    		 Normal: backup boost converter normal Abnormal is displayed if excessive electrical load is applied to the converter at engine start.
    Atmosphere Pressure

    Atmospheric pressure (calculated value):

    Min.: 0 kPa (0 kgf/cm2, 0 psi), Max.: 255 kPa (2.6 kgf/cm2, 37 psi)

    Approx. 100 kPa (1.0 kgf/cm2, 15 psi): Engine switch on (IG) (close to actual atmospheric pressure)

    		 ECM calculated value.
    EPS Load

    Electric power steering current:

    Min.: -327.68 A, Max.: 327.67 A

    		 Approx. 0 A: EPS assist is not activated -
    Accelerator Position

    Accelerator pedal position:

    Min.: 0%, Max.: 127.5%

    		 Actual accelerator pedal position -
    Shift Position

    Shift lever position:

    Unset/P/R/N/D/S

    		 Shift lever position -
    Engine OFF Request

    Engine stop request:

    ON/OFF

    • ON: During engine stop by stop and start control

    • OFF: Not during engine stop by stop and start control

    		 ON is displayed when fuel-cut is performed by stop and start control, engine start is not requested, or starter is forced to operate.
    Wrong Operation (Start)

    Incorrect operation for engine start:

    ON/OFF

    		 - Unused
    Engine Reverse Rev.

    Engine reverse revolution status:

    ON/OFF

    		 - -
    Permit Idling Stop

    Engine stop standby:

    ON/OFF

    		 - -
    Running History

    Vehicle driving record:

    ON/OFF

    		 ON: History of driving vehicle at 2 km/h (1 mph) or more (without DTC output) Turns OFF when the engine is stopped by stop and start control.
    4WD Available

    Availability of dynamic torque control AWD system on vehicle:

    No / Yes

    		 - Unused
    IPA Available

    Availability of LEXUS parking assist-sensor system on vehicle:

    No/Yes

    • No: LEXUS parking assist-sensor system not equipped

    • Yes: LEXUS parking assist-sensor system equipped

    		 -
    Air Suspension Available

    Availability of air suspension system on vehicle:

    No/Yes

    		 - Unused
    Welcab Available

    Availability of welcab system on vehicle:

    No/Yes

    		 - Unused
    External BBC Available

    Availability of external backup boost converter on vehicle:

    No/Yes

    • No: Eco run vehicle converter assembly (external backup boost converter) not equipped

    • Yes: Eco run vehicle converter assembly (external backup boost converter) equipped

    		 -
    ACC Available

    Availability of radar cruise control system on vehicle:

    No/Yes

    • No: Dynamic radar cruise control system not equipped

    • Yes: Dynamic radar cruise control system equipped

    		 -
    Brake Hold Function Available

    Availability of brake hold function on vehicle:

    No/Yes

    		 - Unused
    Steering Angle Sensor Available

    Availability of steering angle sensor on vehicle:

    No/Yes

    		 Yes: Equipped with steering angle sensor -
    Steering Angle Sensor Malfunction

    Steering angle sensor (spiral cable with sensor sub-assembly) malfunction:

    ON / OFF

    		 OFF: Normal -
    Steering Angle Sensor Circuit Open (+B)

    Steering angle sensor (spiral cable with sensor sub-assembly) +B circuit malfunction:

    ON / OFF

    		 OFF: Normal -
    Steering Angle Sensor Abnormal Value

    Steering angle sensor (spiral cable with sensor sub-assembly) value malfunction:

    ON / OFF

    		 OFF: Normal -
    Steering Torque Sensor Malfunction

    Steering torque sensor (electric power steering column subassembly) malfunction:

    ON / OFF

    		 OFF: Normal -
    EPS Current Enable on Assist

    Power steering assist current value determination:

    Avail / Not Avail

    		 Avail: Power assist current valid -
    Auto A/C

    Availability of air conditioning system on vehicle:

    Without/With

    		 With: Equipped with air conditioning system Without: Not equipped with air conditioning system Air conditioning information needs to be registered after engine stop and start ECU replacement.
    Cancel Switch (Multi-display) Available

    Existence of the stop and start cancel switch assembly:

    No/Yes

    		 - -
    Eng Start Req (A/C 2)

    Engine start request from the air conditioning system:

    ON/OFF

    • ON: Engine start requested to ensure air conditioning system performance

    • OFF: Engine start not requested to ensure air conditioning system performance

    		 -
    Wheel Speed Malfunction

    Wheel speed sensor malfunction status:

    ON/OFF

    		 OFF: Input value from speed sensor is normal ON remains displayed when any input values from the wheel speed sensors are abnormal.
    Slip History

    Slip history:

    Without/With

    		 - -
    Battery Type

    Set battery type:

    Specified / Other

    Specified: Specified battery

    Other: Non-specified battery

    		 -
    Communication Method of Brake Boost Sensor

    Method of communication with vacuum sensor:

    Not CAN / CAN

    		 - -
    Communication Method of Brake Boost Sensor

    Method of communication with vacuum sensor:

    Not CAN / CAN

    		 - -
    Communication Method of Brake Boost Sensor

    Method of communication with vacuum sensor:

    Not CAN / CAN

    		 - -
    O/P Air Bleeding

    Oil pump assembly with motor (automatic transaxle assembly) bleeding status:

    Incomplete / Complete

    		 Complete: Bleeding has been completed -
    Oil Pump Relay

    Oil pump motor relay inside ECU status:

    ON / OFF

    		 ON: Oil pump motor relay inside ECU is on -
    Oil Pump Status

    Oil pump assembly with motor (automatic transaxle assembly) status:

    ON / OFF

    • ON: Oil pump assembly with motor (automatic transaxle assembly) operating

    • OFF: Oil pump assembly with motor (automatic transaxle assembly) not operating

    ON is displayed while the engine is stopped by stop and start control

    Tech Tips

    The oil pump assembly with motor (automatic transaxle assembly) is built into the automatic transaxle assembly.
    Oil Pump Duty

    Requested oil pump assembly with motor (automatic transaxle assembly) duty:

    Min.: -32767%, Max.: 32767%

    		 90%: Oil pump assembly with motor (automatic transaxle assembly) is operating

    Tech Tips

    The oil pump assembly with motor (automatic transaxle assembly) is built into the automatic transaxle assembly.
    State of Oil Pump Motor Rotation

    Oil pump assembly with motor (automatic transaxle assembly) rotation status:

    Low / High

    Low: Rotating at low speed

    High: Rotating at high speed

    		 -
    Oil Pump Motor Rotation Frequency

    Oil pump assembly with motor (automatic transaxle assembly) rotation frequency:

    Min.: -32768 Hz, Max.: 32767 Hz

    		 17 to 200 Hz -
    Oper Permission (Idling Stop Performance)

    Permission of stop and start control based on idling stop performance:

    NG/OK

    		 - -
    Oper Permission (Idling Stop Performance Waiting Time)

    Permission of stop and start control based on idling stop performance waiting time

    NG/OK

    		 - -
    Oper Permission (Shift D position)

    Permission of stop and start control based on shift lever position (D):

    NG/OK

    		 OK: Vehicle being driven with shift lever in D -
    Oper Permission (Neutral Switch)

    Permission of stop and start control based on the park/neutral position switch assembly conditions:

    NG/OK

    		 - -
    Oper Permission (Idling)

    Permission of stop and start control based on the engine idle conditions:

    NG/OK

    		 OK: Engine idling (engine speed below 1250 rpm) without accelerator pedal being depressed -
    Oper Permission (Vehicle Speed)

    Permission of stop and start control based on the vehicle speed conditions:

    NG/OK

    		 OK: Vehicle is stopped OK is displayed while vehicle is stopped.
    Stop&Start Precondition

    Permission of stop and start control with all preconditions met:

    ON/OFF

    		 ON: Preconditions for stop and start control have been met

    Condition of permission or prohibition for terms listed below.

    (ECM1, ECM2, idling, battery, ABS VSC, ABS/VSC2, IGSW, DTC, A/C, interval, after running, engine hood closed, D door closed, cancel switch, steering, interval for starter, AT/CVT1, AT/CVT2, key operation, driver side buckle SW, ambient temperature)

    For details on the preconditions, refer to System Description.
    Stop&Start Precondition 2

    Permission of stop and start control with all preconditions met:

    ON/OFF

    		 ON: Preconditions for stop and start control have been met

    Condition of permission or prohibition for terms listed below.

    (idling, brake negative pressure, road surface gradient, no shift operation, steering, O/P check, starter check complete)
    Oper Permission (Master Cylinder Pressure)

    Permission of stop and start control based on the master cylinder pressure:

    NG/OK

    		 OK: Brake pedal depressed while vehicle stopped -
    Open Permission (ECM)

    Stop and start control permission signal sent from the ECM:

    NG/OK

    		 - -
    Oper Permission (ECM 1)

    Permission of stop and start control by the ECM:

    NG/OK

    		 OK: Stop and start control is enabled (SFI system, A/T system is normal) -
    Oper Permission (ECM 2)

    Permission of stop and start control by SFI system:

    NG/OK

    		 OK: Stop and start control is enabled (SFI system is normal) This is sent from the ECM through CAN communication.
    Oper Permission (IG SW)

    Permission of stop and start control based on the engine switch:

    NG/OK

    		 OK: Engine switch on (IG) for 5 seconds -
    Oper Permission (DTC)

    Permission of stop and start control based on the DTC output conditions:

    NG/OK

    		 OK: DTC is not output -
    Oper Permission (O/P Check)

    Permission of stop and start control based on oil pump assembly with motor (automatic transaxle assembly):

    NG/OK

    		 OK: Oil pump assembly with motor (automatic transaxle assembly) normal

    Tech Tips

    The oil pump assembly with motor (automatic transaxle assembly) is built into the automatic transaxle assembly.
    Oper Permission (Brake Negative Pressure)

    Permission of stop and start control based on the brake booster vacuum conditions:

    NG/OK

    OK: Brake booster negative pressure is between 31.5 to 56.8 kPa (0.3 to 0.6 kgf/cm2, 4.6 to 8.2 psi) for at least 1 second

    		 -
    Oper Permission (Interval)

    Permission of stop and start control based on the engine running time conditions:

    NG/OK

    		 OK: A certain period of time has elapsed after starter operation -
    Oper Permission (D Door Closed)

    Permission of stop and start control based on the driver door open/ close conditions:

    NG/OK

    		 OK: Driver door closed -
    Oper Permission (Engine Hood Closed)

    Permission of stop and start control based on the engine hood open/ close conditions:

    NG/OK

    		 OK: Engine hood closed -
    Oper Permission (A/C)

    Permission of stop and start control based on the air conditioning conditions:

    NG/OK

    		 OK: Air conditioning conditions are met -
    Oper Permission (Ambient Temperature)

    Permission of stop and start control based on the air conditioning conditions:

    NG/OK

    		 OK: Ambient temperature -5°C (23°F) or higher -
    Oper Permission (ABS/VSC)

    Permission of stop and start control by vehicle stability control system:

    NG/OK

    		 OK: Stop and start control permitted based on brake system normal condition, or Active Test (forced permission) performed -
    Oper Permission (No Shift Operation)

    Permission of stop and start control based on shift lever operation condition:

    NG/OK

    		 OK: Shift lever not moved for 1 second or more -
    Oper Permission (After Running)

    Permission of stop and start control based on the initial trip conditions after the engine switch is turned on (IG):

    NG/OK

    		 OK: Vehicle has been driven at 7 km/h (4 mph) or more OK is displayed after the initial trip until the engine switch is turned off.
    Oper Permission (Battery)

    Permission of stop and start control based on the battery conditions:

    NG/OK

    		 OK: Stop and start control is permitted based on battery conditions, or Active Test (forced permission) is performed -
    Oper Permission (Start Min Volt 1)

    Permission of stop and start control based on the battery conditions:

    NG/OK

    		 OK: Battery temperature is 0°C (32°F) or lower and minimum voltage when cranking is equal to or above threshold If 2 or more of Oper Permission (Start Min Volt 1, 2, 3, or 4) are OK, stop and start control is permitted.
    Oper Permission (Start Min Volt 2)

    Permission of stop and start control based on the battery conditions:

    NG/OK

    		 OK: Battery temperature is higher than 0°C (32°F) and minimum voltage when cranking is equal to or above threshold If 2 or more of Oper Permission (Start Min Volt 1, 2, 3, or 4) are OK, stop and start control is permitted.
    Oper Permission (Start Min Volt 3)

    Permission of stop and start control based on the battery conditions:

    NG/OK

    		 OK: Battery temperature is 0°C (32°F) or lower and minimum voltage when starter begins operation is equal to or above threshold If 2 or more of Oper Permission (Start Min Volt 1, 2, 3, or 4) are OK, stop and start control is permitted.
    Oper Permission (Start Min Volt 4)

    Permission of stop and start control based on the battery conditions:

    NG/OK

    		 OK: Battery temperature is higher than 0°C (32°F) and minimum voltage when starter begins operation is equal to or above threshold If 2 or more of Oper Permission (Start Min Volt 1, 2, 3, or 4) are OK, stop and start control is permitted.
    Oper Permission (Battery Current)

    Permission of stop and start control based on the battery conditions:

    NG/OK

    		 OK: Battery discharge current is -125 A or less Engine stop and start ECU calculated value.
    Oper Permission (Integrated Current)

    Permission of stop and start control based on the integrated current value conditions:

    NG/OK

    		 OK: Integrated current value is more than specified

    The status depend on the value of "Integrated Current", and OK/NG threshold differs according to the battery temperature.

    Refer to "Regarding Battery Integrated Current" below for details.*
    Oper Prohibition (Jump Start)

    Prohibition of stop and start control based on the jump start conditions:

    Permit/Prohibit

    		 Prohibit: Engine started by engine switch operation with the engine hood open When Prohibit is displayed, the stop and start control will be prohibited until the engine switch is turned off.
    Oper Permission (Interval For Starter)

    Permission of stop and start control based on the conditions after engine restart:

    NG/OK

    		 OK: A maximum of 4 minutes have elapsed after engine restarted -
    Oper Permission (Cancel Switch)

    Permission of stop and start control based on the stop and start cancel switch assembly operation:

    NG/OK

    		 OK: Stop and start control is permitted (the stop and start cancel indicator light is not illuminated) -
    Oper Permission (Road Surface Gradient)

    Permission of stop and start control based on the road grade conditions:

    NG/OK

    		 OK: Stopped on a level road (not on a steep incline) -
    Oper Permission (Driver Side Buckle SW)

    Permission of stop and start control based on the driver seat belt condition:

    NG/OK

    		 OK: The driver side buckle switch is fastened -
    Oper Permission (Steering)

    Permission of stop and start control by the power steering ECU assembly:

    NG/OK

    		 OK: EPS system is normal operated -
    Oper Permission (4WD and Rear Differential Lock)

    Permission of stop and start control by the 4WD and Rear Differential Lock:

    NG/OK

    		 Unused -
    Oper Prohibition (Shift Position Uncertain)

    Prohibition of stop and start control based on the shift lever position:

    Permit/Prohibit

    		 Permit: Shift lever position determined -
    Oper Permission (Key Operation)

    Permission of stop and start control based on the engine switch:

    NG/OK

    		 OK: Engine switch assembly not operated -
    Oper Permission (Starter Check Complete)

    Permission of stop and start control based on the starter circuit self-check result:

    NG/OK

    		 OK: Stop and start control enabled (starter circuit normal) When the engine stop and start ECU is abnormal, the starter drive circuit is judged to be abnormal, and NG is displayed
    Oper Permission (Brake Master Pressure 0 Point)

    Permission of stop and start control due to brake master pressure zero point calibration completion:

    NG/OK

    		 OK: Brake master pressure zero point calibration complete -
    Oper Prohibition (Engine F/C)

    Prohibition of stop and start control based on the engine fuel-cut prohibition signal:

    Permit/Prohibit

    		 Prohibit: Fuel-cut not performed on SFI system -
    Oper Permission (O/P Air Bleeding)

    Prohibition of stop and start control based on oil pump assembly with motor (automatic transaxle assembly):

    NG/OK

    		 OK: Bleeding has been completed -
    Eng Start Req (Brk Negative Pressure Low)

    Engine start request due to low brake booster vacuum:

    ON/OFF

    		 ON: Brake booster vacuum insufficient while engine stopped by stop and start control

    • OFF is usually displayed

    • ON is displayed when the engine is started due to decreased brake booster vacuum caused by depressing the brake pedal several times
    Eng Start Req (IG Switch)

    Engine start request due to engine switch:

    ON/OFF

    		 ON: Engine started using engine switch assembly while engine stopped by stop and start control -
    Eng Start Req (ABS/VSC)

    Engine start request from vehicle stability system:

    ON/OFF

    		 ON: Engine start request from the skid control computer (brake actuator assembly) -
    Eng Start Req (ECM)

    Engine start request from ECM:

    ON/OFF

    		 ON: Engine start requested by ECM -
    Eng Start Req (A/C)

    Engine start request from Air conditioning system:

    ON/OFF

    		 ON: Engine start requested by air conditioning system -
    Eng Start Req (Accelerator)

    Engine start request due to accelerator pedal operation:

    ON/OFF

    		 ON: Engine start requested due to accelerator pedal being depressed -
    Eng Start Req (Brake Release)

    Engine start request due to brake release:

    ON/OFF

    		 ON: Engine start requested due to brake pedal being released -
    Eng Start Req (Shift Lever)

    Engine start request due to shift lever operation:

    ON/OFF

    		 ON: Engine start request due to shift lever operation -
    Eng Start Req (Shift P Position and Brake)

    Engine start request due to shift P position and brake release:

    ON/OFF

    		 ON: Engine start request due to shift P position and brake release -
    Eng Start Req (Steering)

    Engine start request by the power steering system:

    ON/OFF

    		 ON: Power steering assist current is abnormal -
    Eng Start Req (AT/CVT)

    Engine start request from the automatic transaxle system:

    ON/OFF

    		 ON: Engine start request from the automatic transaxle system while the engine is stopped by stop and start control -
    Eng Start Req (Detect DTC)

    Engine start request due to output of DTCs:

    ON/OFF

    		 ON: Engine start requested due to output of stop and start system DTCs -
    Eng Start Req (Shift Uncert)

    Engine start request due to uncertain shift lever position:

    ON/OFF

    		 ON: Engine start request due to uncertain shift position while the engine is stopped by stop and start control -
    Eng Start Req (Engine Hood Open)

    Engine start request due to opening of engine hood:

    ON/OFF

    		 ON: Engine start requested due to engine hood being opened while the engine is stopped by stop and start control -
    Eng Start Req (Battery Condition)

    Engine start request based on battery performance:

    ON/OFF

    		 ON: Engine start requested due to low battery voltage while the engine is stopped by stop and start control -
    Eng Start Req (CVT Vehicle Speed)

    Engine start request based on vehicle speed signal from the CVT system:

    ON/OFF

    		 - Unused
    Eng Start Req (ABS Vehicle Speed)

    Engine start request based on vehicle speed signal from the vehicle stability control system:

    ON/OFF

    		 ON: Engine start requested due to speed signal while the engine is stopped by stop and start control Engine start request based on the speed sensor signal.
    Eng Start Req (Cancel SW)

    Engine start request by stop and start cancel switch assembly:

    ON/OFF

    		 ON: Engine start requested due to stop and start cancel switch assembly operation while the engine is stopped by stop and start control -
    Eng Start Req (Courtesy SW or Buckle SW)

    Engine start request by courtesy switch (driver side) or driver side buckle switch:

    ON/OFF

    		 ON: Engine start requested due to courtesy switch (for driver side) or driver side buckle switch operation while the engine is stopped by stop and start control -
    Eng Start Req (4WD and Rear Differential Lock)

    Engine start request by 4WD and rear differential lock:

    ON/OFF

    		 Unused -
    ABS Running

    Operating condition of the anti-lock brake system:

    ON/OFF

    		 ON: Anti-lock brake system operating -
    Alternator Status

    Alternator power generation status:

    Normal/ Abnormal

    		 Normal: Alternator operation normal -
    EEPROM

    Malfunction in EEPROM:

    Normal/ Abnormal

    		 Normal: EEPROM normal -
    Dec Sensor Calibration

    Deceleration sensor zero point uncalibrated:

    Comp/Incomp

    		 Comp: Deceleration sensor learning completed -
    Deceleration Sensor Movement

    Sticking of the deceleration sensor:

    Normal/ Abnormal

    		 Normal: Deceleration sensor not stuck -
    Neutral Switch Stuck ON

    Neutral switch stuck on malfunction:

    ON/OFF

    		 OFF: System is normal -
    Engine Stall History during S&S (Hood Open)

    History of engine stall due to the engine hood being opened with shift lever in D while the engine is stopped by stop and start control:

    No/Yes

    		 No: No history -
    Engine Stall History during S&S (Collision or Battery Voltage Low)

    History of engine stall due to a collision or low battery voltage when the stop and start control is operating:

    No/Yes

    		 No: No history -
    Engine Stall History during Engine Starting (Collision)

    History of engine stall due to a collision while the engine is stopped by stop and start control:

    No/Yes

    		 No: No history -
    Engine Start Fail

    History of engine restart failure while engine stopped by stop and start control:

    No/Yes

    		 No: No history -
    NE Sensor Circuit Open2

    Malfunction in the crank position sensor circuit:

    ON/OFF

    		 OFF: System is normal ON: No engine speed input at engine start.
    Neutral Switch Stuck OFF

    Neutral switch stuck off malfunction:

    ON/OFF

    		 ON: System is normal -
    Brk Boost Malfunc 1

    Fail-safe operation due to malfunction of vacuum sensor assembly:

    OK / NG

    		 OK: System is normal Fail-safe operation due to sticking of the vacuum sensor assembly (change in the sensor value is small when STP signal changes from ON to OFF)
    Brk Boost Malfunc 2

    Fail-safe operation due to malfunction in the vacuum sensor assembly:

    OK / NG

    		 OK: System is normal Fail-safe operation due to sticking of the vacuum sensor assembly (a change in the sensor value is small, even though the vehicle speed has increased from 0 km/h (0 mph) to 30 km/h (18.6 mph) 30 times)
    Num of Current Code

    Number of currently stored DTCs:

    Min.: 0, Max.: 255

    		 - -
    Number of Oper Prohibition (ECM 1)

    Number of stop and start control prohibitions when ECM conditions are not met:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (ECM 2)

    Number of stop and start control prohibitions due to SFI system:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Engine F/C)

    Number of stop and start control prohibitions due to fuel-cut:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Jump Start)

    Number of stop and start control prohibitions due to jump start:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Engine Hood Closed)

    Number of stop and start control prohibitions due to open engine hood:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (AT/CVT 1)

    Number of stop and start control prohibitions due to automatic transaxle system condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (AT/CVT 2)

    Number of stop and start control prohibitions due to automatic transaxle system condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Battery)

    Number of stop and start control prohibitions due to battery condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Start Min Volt)

    Number of stop and start control prohibitions due to battery condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Battery Current)

    Number of stop and start control prohibitions due to battery condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Integrated Current)

    Number of stop and start control prohibitions due to battery condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (A/C)

    Number of stop and start control prohibitions due to air conditioning condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Ambient Temperature)

    Number of stop and start control prohibitions due to ambient temperature condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (ABS/VSC 1)

    Number of stop and start control prohibitions due to brake system permission conditions:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Brake Negative Pressure)

    Number of stop and start control prohibitions due to brake negative pressure condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Stop&Start Precondition1)

    Number of stop and start control prohibitions due to precondition 1:

    Min.: 0, Max.: 2147483647

    		 -

    Condition of permission or prohibition for terms listed below.

    (ECM1, ECM2, idling, battery, ABS/VSC, ABS/VSC2, IGSW, DTC, A/C, interval, after running, engine hood closed, D door closed, cancel switch, steering, interval for starter, key operation, AT/CVT, AT/CVT2, driver side buckle SW, ambient temperature)

    For details on the preconditions, refer to System Description.
    Number of Oper Prohibition (Stop&Start Precondition2)

    Number of stop and start control prohibitions due to precondition 2:

    Min.: 0, Max.: 2147483647

    		 -

    Condition of permission or prohibition for terms listed below.

    (idling, brake negative pressure, road surface gradient, no shift operation, steering, O/P check, starter check complete)
    Number of Oper Prohibition (DTC)

    Number of stop and start control prohibitions due to DTC output:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Abnormal Wheel Speed Sensor Inputs)

    Number of stop and start control prohibitions due to abnormal vehicle speed signal input:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Deceleration Sensor Abnormal)

    Number of stop and start control prohibitions due to deceleration sensor malfunction:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Interval For Starter)

    Number of stop and start control prohibitions due to starter fail-safe operation:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Interval)

    Number of stop and start control prohibitions due to periodic control prohibition after engine stop:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Cancel Switch)

    Number of stop and start control prohibitions due to stop and start cancel switch assembly operation:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Driver Side Buckle SW)

    Number of stop and start control prohibitions due to unfastened driver seat belt:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (D Door Closed)

    Number of stop and start control prohibitions due to open driver door:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (IG SW)

    Number of stop and start control prohibitions due to engine switch:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (After Running)

    Number of stop and start control prohibitions based on the initial trip conditions:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Idling)

    Number of stop and start control prohibitions due to idling condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Road Surface Gradient)

    Number of stop and start control prohibitions due to road surface gradient condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Steering)

    Number of stop and start control prohibitions due to power steering system condition:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (No Shift Operation)

    Number of stop and start control prohibitions due to shift position permission conditions:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Key Operation)

    Number of stop and start control prohibitions due to engine switch:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Starter Check Complete)

    Number of stop and start control prohibitions due to incomplete starter circuit check:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (Brake Master Pressure 0 Pt Calib Incomp)

    Number of stop and start control prohibitions due to brake master pressure zero point calibration no completion:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Oper Prohibition (O/P Check)

    Number of stop and start control prohibitions due to oil pump assembly with motor (automatic transaxle assembly):

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Eng Start Req (4WD and Rear Differential Lock)

    Number of stop and start control prohibitions due to 4WD and rear differential lock:

    Min.: 0, Max.: 2147483647

    		 - -
    Number of Eng Start Req (ECM)

    Number of engine start requests from SFI system:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Engine Hood Open)

    Number of engine start requests due to opening of engine hood while engine is stopped by stop and start control:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (AT/CVT)

    Number of engine start requests from the CVT system:

    Min.: 0, Max.:65535

    		 - -
    Number of Eng Start Req (Battery Condition)

    Number of engine start requests due to low battery performance:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (A/C)

    Number of engine start requests from air conditioning system:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (ABS/VSC)

    Number of engine start requests from vehicle stability control system:

    Min.: 0, Max.:65535

    		 - -
    Number of Eng Start Req (Brk Negative Pressure Low)

    Number of engine start requests due to low brake booster vacuum:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Shift P Position and Brake)

    Indicates the number of the engine start requests due to low brake booster vacuum while the engine is stopped by stop and start control with the shift lever in P:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Detect DTC)

    Number of engine start requests due to DTC output:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (CVT Vehicle Speed)

    Number of engine start requests due to CVT vehicle speed signal input:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (ABS Vehicle Speed)

    Number of engine start requests due to anti-lock brake system vehicle speed signal input:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Cancel SW)

    Number of engine start requests due to stop and start cancel switch assembly operation:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Courtesy SW or Buckle SW)

    Number of engine start requests due to driver exiting vehicle:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (IG Switch)

    Number of engine start requests due to engine switch:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Accelerator)

    Number of engine start requests due to accelerator pedal operation:

    Min.: 0, Max.:65535

    		 - -
    Number of Eng Start Req (Steering)

    Number of engine start requests due to steering operation:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (Shift Uncert)

    Number of engine start requests due to uncertain shift lever position:

    Min.: 0, Max.: 65535

    		 - -
    Number of Eng Start Req (4WD and Rear Differential Lock)

    Number of engine start requests due to 4WD and rear differential lock:

    Min.: 0, Max.: 65535

    		 - -

    • *: Regarding Battery Integrated Current

      In the stop and start system, the engine stop and start ECU switches the system control mode (stop and start control permitted/prohibited) based on the battery condition (charge/discharge condition) to protect the battery and to ensure stable engine restarting performance.

      The battery charge-discharge condition is determined from the integrated current value calculated from the battery state sensor assembly signal. The integrated current value is obtained by multiplying the current (Ampere) detected from the battery state sensor assembly by the time (seconds), and it is expressed in a unit A-sec.

      Tech Tips

      Example: Integrated current of -3110 A-sec corresponds to a load where current of 10 A flows out from the battery for 311 seconds.

      Using the Data List function of the GTS, the integrated current value can be read by checking the Data List item "Integrated Current". The item "Oper Permission (Integrated Current)" shows the permission status of stop and start control (ON or OFF) and is judged from the "Integrated Current" value.

      Negative integrated current represents battery discharge, and positive represents battery charge. In other words, the "Integrated Current" value of the Data List item will decrease from the present value when the battery is discharged, and the value will increase when the battery is charged.

      The engine stop and start ECU determines the amount of power available based on the integrated current value, and it prohibits stop and start control if the value is below the threshold, because the battery might not be able to start the engine. The threshold varies according to the battery temperature.

      Furthermore, the integrated current value is recorded inside the engine stop and start ECU memory even if the engine switch is off, and when the engine switch is next turned on (IG), the value is calculated from the value recorded when the engine switch was turned off.


    • Integrated Current Condition 1:

      When "Status of Battery Charge Control" is Charge Control Coordination Mode or Stop and Start Standalone Mode:

      A01W5MME40

        Stop and Start System Operation (for Condition 1)

      • Phase A (previous trip integrated current storage):

        When the engine switch is turned off, the integrated current value is recorded in the ECU memory. The value is carried over to the next trip.

      • Phase B (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -19123 A-sec.

      • Phase C (charging):

        When the integrated current has dropped to less than -19123 A-sec, stop and start control is prohibited from stopping the engine until the current reaches -17971 A-sec.

      • Phase D (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -19123 A-sec.


    • Integrated Current Condition 2:

      When "Status of Battery Charge Control" is Low Temperature Mode and "Battery Fluid Temperature" is between 3°C (37.4°F) and 11°C (51.8°F):

      A01W5MME41

        Stop and Start System Operation (for Condition 2)

      • Phase A (previous trip integrated current storage):

        When the engine switch is turned off, the integrated current value is recorded in the ECU memory. The value is carried over to the next trip.

      • Phase B (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -9216 A-sec.

      • Phase C (charging):

        When the integrated current has dropped to less than -9216 A-sec, stop and start control is prohibited from stopping the engine until the current reaches -8064 A-sec.

      • Phase D (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -9216 A-sec.


    • Integrated Current Condition 3:

      When "Status of Battery Charge Control" is Low Temperature Mode and "Battery Fluid Temperature" is between -1°C (30.2°F) and under 3°C (37.4°F):

      A01W5MME42

        Stop and Start System Operation (for Condition 3)

      • Phase A (previous trip integrated current storage):

        When the engine switch is turned off, the integrated current value is recorded in the ECU memory. The value is carried over to the next trip.

      • Phase B (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -6451 A-sec.

      • Phase C (charging):

        When the integrated current has dropped to less than -6451 A-sec, stop and start control is prohibited from stopping the engine until the current reaches -5299 A-sec.

      • Phase D (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -6451 A-sec.


    • Integrated Current Condition 4:

      When "Status of Battery Charge Control" is Stop and Start Restriction Mode or Temperature High/Low Mode:

      A01W163E06

        Stop and Start System Operation (for Condition 4)

      • Phase A (previous trip integrated current storage):

        When the engine switch is turned off, the integrated current value is recorded in the ECU memory. The value is carried over to the next trip.

      • Phase B (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -1152 A-sec.

      • Phase C (charging):

        When the integrated current has dropped to less than -1152 A-sec, stop and start control is prohibited from stopping the engine until the current reaches 0 A-sec.

      • Phase D (stop and start control permitted):

        Stop and start control is permitted to stop the engine until the integrated current reaches less than -1152 A-sec.

    Tech Tips


    • Performance (internal resistance) of lead-acid batteries used in typical vehicles changes according to the battery temperature. The internal resistance of the battery tends to be higher when the battery temperature is low. Thus, the stop and start system switches the threshold for determining the power charge according to the battery temperature when performing stop and start control.

    • If the battery is deteriorated, the internal resistance has also increased and the stop and start rate becomes lower. (The total of idling time while the vehicle is stopped increases.)

    • When troubleshooting, if the malfunction cannot be identified, the battery might be deteriorated.

  2. ACTIVE TEST

    Tech Tips

    Using the GTS to perform Active Tests allows relays, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Stop and Start / Active Test.

    5. Perform the Active Test by referring to the table below.

      Tech Tips

      Even if stop and start control is prohibited due to the condition of any of the systems listed above, performing the Active Tests allows stop and start control to be performed.

    Stop and Start System
    Tester Display Test Part Control Range Diagnostic Note
    Buzzer Buzzer activation ON/OFF -
    Starter Starter activation ON/OFF

    Note


    • Prohibited while the engine is running

    • Do not perform Active Test for more than 3 seconds

    • Wait 3 seconds before performing Active Test again
    Pinion Gear Plunger Starter pinion gear can be moved inward/outward ON/OFF

    Note


    • Prohibited while the engine is running

    • Do not perform Active Test for more than 3 seconds

    • Wait 5 seconds before performing Active Test again
    Starter Motor Drive Magnet Switch Starter motor can be turned on/off ON/OFF

    Note


    • Prohibited while the engine is running

    • Do not perform Active Test for more than 3 seconds

    • Wait 5 seconds before performing Active Test again
    Permit Cond (A/C) When stop by stop and start control is prohibited, prohibition of control based on the air conditioning conditions can be disabled/enabled. ON/OFF -
    Permit Cond (Battery) When stop by stop and start control is prohibited, prohibition of control based on the battery conditions can be disabled/enabled. ON/OFF -
    Permit Cond (Engine) When stop by stop and start control is prohibited, prohibition of control based on the SFI system conditions can be disabled/enabled. ON/OFF -
    Permit Cond (ABS) When engine stop by stop and start control is prohibited, prohibition of control based on the brake system condition can be disabled/enabled. ON/OFF -
    AT Oil Pump (Hi) Automatic transaxle oil pump can be operated/ stopped forcibly (high speed operation) ON/OFF

    Note

    Prohibited while the engine is running
    AT Oil Pump (Lo) Automatic transaxle oil pump can be operated/ stopped forcibly (low speed operation) ON/OFF

    Note

    Prohibited while the engine is running
    Precondition (Control) Stop and start control can be permitted/prohibited based on precondition 1 ON/OFF

    Condition of permission or prohibition for terms listed below.

    (ECM1, ECM2, idling, battery, ABS/VSC, ABS/VSC2, IGSW, DTC, A/C, interval, after running, engine hood closed, D door closed, cancel switch, interval for starter, key operation, AT/CVT, AT/CVT2, driver side buckle SW, ambient temperature)
    Precondition2 (Control) Stop and start control can be permitted/prohibited based on precondition 2 ON/OFF

    Condition of permission or prohibition for terms listed below.

    (idling, brake negative pressure, road surface gradient, no shift operation, steering, O/P check, starter check complete)
    Start Cond (Hood Crtsy) When engine stop by stop and start control is prohibited, prohibition of control based on the engine hood conditions can be disabled/enabled ON/OFF -