Toyota Yaris: Stop And Start System / Stop and Start System does not Operate (Battery Condition)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / Stop And Start / Stop And Start System / Stop and Start System does not Operate (Battery Condition)

DESCRIPTION

When the stop and start system does not operate, check whether the operation is prohibited because the auxiliary battery conditions are not met.

Data List items

Hood Courtesy Switch

Auxiliary Battery Current

Auxiliary Battery Fluid Temperature (Start)

Auxiliary Battery Fluid Temperature

Idling Stop Rate

Total Idling Stop Rate

Integrated Current

Status of Auxiliary Battery Charge Control

Minimum Voltage (Cranking)

Minimum Voltage (Starter Solenoid Engagement)

State of BBC

Stop&Start Operating Permission (Power Management)

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

Stop&Start Operating Permission (Minimum Voltage (Cranking))

Stop&Start Operating Permission (Integrated Current)

Stop&Start Operating Prohibition (Jump Start)

Stop&Start Operating Prohibition (Manual Start for the First Time)

Auxiliary Battery Type

Ambient Temperature

Alternator Status

NOTICE:

If the Data List item Stop&Start Operating Permission (Power Management) is "NG" even after correcting a certain problem using the diagnostic troubleshooting procedures, the problem may be due to the auxiliary battery charge amount being temporarily low or the auxiliary battery may be deteriorated. However, there may be multiple overlapping conditions which are causing system operation to be prohibited, so make sure to always confirm all the diagnostic troubleshooting procedures.

PROCEDURE

1.

CHECK MULTI-INFORMATION DISPLAY

(a) Check whether the multi-information display displayed that the specified auxiliary battery is not equipped.

HINT:

The multi-information display is displayed when the voltage decreases below the minimum voltage necessary for starting the non-specified auxiliary battery when stop and start control is operated.

Result

Proceed to

No display

A

Displayed in past

B

B

GO TO STEP 14

A

2.

CHECK DTC OUTPUT

(a) Read the DTCs.

Powertrain > Stop and Start > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

3.

READ VALUE USING GTS (STOP&START OPERATING PERMISSION (POWER MANAGEMENT))

HINT:

Check whether stop and start control was prohibited based on the auxiliary battery conditions or other conditions.

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Operating Permission (Power Management)

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Permission (Power Management)

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

NG / OK

OK: Stop and start control is permitted due to auxiliary battery condition, or Active Test (forced permission) is performed

-

Result

Proceed to

NG is displayed

A

OK is displayed

B

B

END (CHECK OTHER STOP AND START CONTROL PERMISSION/PROHIBITION CONDITIONS)

A

4.

READ VALUE USING GTS (BATTERY TYPE)

Powertrain > Stop and Start > Data List

Tester Display

Battery Type

(a) Check the "Battery Type" Data List Item.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Type

Set auxiliary battery type

Specified / Other

Specified: Specified auxiliary battery

Other: Non-specified auxiliary battery

-

(b) Check whether the auxiliary battery is specified or not specified.

GTS Display

Proceed to

Specified

A

Other

B

B

GO TO STEP 14

A

5.

READ VALUE USING GTS (STOP&START OPERATING PROHIBITION (JUMP START))

HINT:

Check whether stop and start control was prohibited based on the jump start auxiliary battery condition.

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Operating Prohibition (Jump Start)

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Prohibition (Jump Start)

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

Permit / Prohibit

Permit: Except for jump start conditions

When Prohibit is displayed, stop and start control will be prohibited until the ignition switch is turned off.

Jump start conditions: Engine started with the engine hood or back door open and the ignition switch turned START

Result

Proceed to

Permit is displayed

A

Prohibit is displayed

B

HINT:

  • A jump start is determined if the engine is started with the engine hood or back door open.
  • After turning the ignition switch off and waiting approximately 30 seconds, a jump start is determined to have not occurred if the engine started with the engine hood or back door closed.
B

GO TO STEP 17

A

6.

READ VALUE USING GTS (STOP&START OPERATING PROHIBITION (MANUAL START FOR THE FIRST TIME))

HINT:

Check whether the stop and start control was prohibited based on the manual start auxiliary battery condition.

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Operating Prohibition (Manual Start for the First Time)

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Prohibition (Manual Start for the First Time)

Prohibition of stop and start control based on the manual start conditions

Permit / Prohibit

Permit: Except for manual start conditions

  • When Prohibit is displayed, stop and start control will be prohibited until the ignition switch is turned off.
  • During manual start conditions:
    • Clutch start switch OFF or vehicle speed signal input
    • Neutral position sensor (neutral position switch) OFF
    • Starter signal OFF

Result

Proceed to

Permit is displayed

A

Prohibit is displayed

B

B

END (STOP AND START CONTROL PROHIBITED DUE TO MANUAL START OPERATION)

A

7.

READ VALUE USING GTS (STATE OF BBC)

HINT:

Check the operation of the backup boost converter.

Powertrain > Stop and Start > Data List

Tester Display

State of BBC

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

State of BBC

Backup boost converter status

Cycle Err / Overvoltage / Overload / Normal / Low Vol / Duty Err / Stop&Start Sensor Electric Supply Low / Stop&Start CPU Malfunction / BBC Overcurrent / Stop&Start Starter Overcurrent / Stop&Start 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 ignition switch is turned to ON.
  • Overload:
    • Overcurrent is detected.
  • Overvoltage:
    • When the ignition switch is ON:
      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. Malfunction is detected in the feedback circuit in the backup boost converter
      2. Too high or low output voltage.

Result

Proceed to

Normal is displayed

A

Normal is not displayed

B

B

GO TO BACKUP BOOST CONVERTER CIRCUIT

A

8.

READ VALUE USING GTS (ALTERNATOR STATUS)

HINT:

Check the power generation status of the generator.

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Alternator Status

Generator power generation status

Normal /Abnormal

Normal: Generator operation normal

-

Result

Proceed to

Normal is displayed

A

Abnormal is displayed

B

B

GO TO CHARGING SYSTEM

A

9.

READ VALUE USING GTS (AUXILIARY BATTERY FLUID TEMPERATURE, IDLING STOP RATE AND TOTAL IDLING STOP RATE)

HINT:

Check the idling stop rate.

Powertrain > Stop and Start > Data List

Tester Display

Battery Fluid Temperature

Idling Stop Rate

Total Idling Stop Rate

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Fluid Temperature

Estimated temperature inside auxiliary battery

Min.: -40°C (-40°F)

Max.: 215°C (419°F)

Changes according to actual temperature: Driving after engine warmed up

-

Idling Stop Rate

Rate of the idling stop time to the entire ignition switch to ON time of this trip

Min.: 0%

Max.: 255%

-

-

Total Idling Stop Rate

Rate of the overall idling stop time to the overall ignition switch to ON time

Min.: 0%

Max.: 255%

-

-

Result

Proceed to

Idling Stop Rate

Total Idling Stop Rate

40% or less

-

A

 

Auxiliary battery fluid temperature 3°C (37°F) or higher: 50% or less

 

Auxiliary battery fluid temperature 0 to 3 C (32 to 37°F):[(25 / 3) x Battery fluid temperature (°C) + 25]% or less

-

Auxiliary battery fluid temperature Less than 0°C (32°F):[Battery fluid temperature (°C) + 25]% or less

Other than above

B

B

END (STOP AND START PROHIBITED DUE TO IDLING STOP RATE MORE THAN THRESHOLD OR TOTAL IDLING STOP RATE MORE THAN THRESHOLD)

A

10.

READ VALUE USING GTS (AUXILIARY BATTERY FLUID TEMPERATURE, AMBIENT TEMPERATURE)

HINT:

Check the auxiliary battery fluid temperature.

Powertrain > Stop and Start > Data List

Tester Display

Battery Fluid Temperature

Ambient Temperature

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Fluid Temperature

Estimated temperature inside auxiliary battery

Min.: -40°C (-40°F)

Max.: 215°C (419°F)

Changes according to actual temperature: Driving after engine warmed up

-

Ambient Temperature

Ambient temperature

Min.: -40°C (-40°F)

Max.: 215°C (419°F)

Close to ambient temperature

-

Result

Proceed to

Both Auxiliary Battery Fluid Temperature and Ambient Temperature are suitable temperature

(Auxiliary Battery Fluid Temperature: -10°C (14°F) or higher and 70°C (158°F) or less, Ambient Temperature: -5°C (23°F) or higher)

A

Auxiliary Battery Fluid Temperature or Ambient Temperature is not suitable temperature

(Auxiliary Battery Fluid Temperature: -15°C (5°F) or less or 75°C (167°F) or higher, Ambient Temperature: -6°C (21.2°F) or less)

B

HINT:

The Auxiliary Battery Fluid Temperature hysteresis is 5°C (9°F) and the Ambient Temperature hysteresis is 1°C (1.8°F).

B

END (STOP AND START CONTROL PROHIBITED DUE TO ABNORMAL AUXILIARY BATTERY FLUID TEMPERATURE)

A

11.

READ VALUE USING GTS (STATUS OF BATTERY CHARGE CONTROL)

HINT:

Check whether stop and start control was prohibited based on the auxiliary battery charge control mode.

(a) Start the engine and allow it to idle.

Powertrain > Stop and Start > Data List

Tester Display

Status of Battery Charge Control

(b) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Status of Battery Charge Control

Auxiliary battery charge control status

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

-

-

Result

Proceed to

"Refresh Charge Mode", "Battery Condition Judgment Mode" or "Abnormal Mode" is not displayed

A

"Refresh Charge Mode" is displayed

B

"Abnormal Mode" is displayed

C

"Battery Condition Judgment Mode" is displayed*

-

HINT:

*: When "Battery Condition Judgment Mode" is displayed, wait approximately 2 minutes for the mode to change and then check the value.

B

END (STOP AND START CONTROL PROHIBITED IN REFRESH CHARGE MODE)

C

GO TO CHARGING SYSTEM

A

12.

READ VALUE USING GTS (STOP&START OPERATING PERMISSION (MINIMUM VOLTAGE (STARTER SOLENOID ENGAGEMENT) AND MINIMUM VOLTAGE (CRANKING))

HINT:

Check whether stop and start control was prohibited based on the minimum starting voltage of the auxiliary battery condition.

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

Stop&Start Operating Permission (Minimum Voltage (Cranking))

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

Permission of stop and start control based on minimum voltage during starter solenoid engagement

NG / OK

OK: Minimum voltage when starter begins operation is equal to the threshold or higher

If both Minimum Voltage (Starter Solenoid Engagement) condition and Minimum Voltage (Cranking) condition are OK, stop and start control is permitted.

Stop&Start Operating Permission (Minimum Voltage (Cranking))

Permission of stop and start control based on minimum voltage during cranking

NG / OK

OK: Minimum voltage when cranking is equal to the threshold or higher

If both Minimum Voltage (Starter Solenoid Engagement) condition and Minimum Voltage (Cranking) condition are OK, stop and start control is permitted.

Result

Proceed to

OK is displayed for 2 items

A

OK is displayed for 1 item or none

B

HINT:

The Data List item "Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement)) and Stop&Start Operating Permission (Minimum Voltage (Cranking))" is judged OK or NG according to the values of the following Data List items.

Powertrain > Stop and Start > Data List

Tester Display

Minimum Voltage (Cranking)

Minimum Voltage (Starter Solenoid Engagement)

Battery Type

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Minimum Voltage (Cranking)

Minimum voltage when cranking engine

Min.: -327.68 V

Max.: 327.67 V

6 to 11 V

Lowest auxiliary battery voltage measured after the starter starts operating.

Minimum Voltage (Starter Solenoid Engagement)

Minimum voltage when starter begins operation

Min.: -327.68 V

Max.: 327.67 V

6 to 11 V

Minimum auxiliary battery voltage while the starter starts operating.

Battery Type

Set auxiliary battery

Specified / Other

Specified: Specified auxiliary battery

Other: Non-specified auxiliary battery

-

Permission Criteria (Specified Auxiliary Battery):

Tester Display

Minimum Voltage (Starter Solenoid Engagement)

Minimum Voltage (Cranking)

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

7.2 V or higher

-

Stop&Start Operating Permission (Minimum Voltage (Cranking))

-

7.2 V or higher

Permission Criteria (Non-specified Auxiliary Battery):

Tester Display

Minimum Voltage (Starter Solenoid Engagement)

Minimum Voltage (Cranking)

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

8.92 V or higher

-

Stop&Start Operating Permission (Minimum Voltage (Cranking))

-

8.92 V or higher

B

GO TO STEP 19

A

13.

READ VALUE USING GTS (STOP&START OPERATING PERMISSION (INTEGRATED CURRENT))

HINT:

Check whether stop and start control was prohibited based on the integrated current value auxiliary battery condition.

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Operating Permission (Integrated Current)

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Permission (Integrated Current)

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

NG / OK

OK: Integrated current value is equal to the threshold or more

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

Result

Proceed to

OK is displayed

A

NG is displayed

B

A

END (TURN ELECTRICAL LOAD OFF AS MUCH AS POSSIBLE)

B

GO TO STEP 16

14.

CHECK AUXILIARY BATTERY SETTINGS AND EQUIPPED AUXILIARY BATTERY

Powertrain > Stop and Start > Data List

Tester Display

Battery Type

(a) Check the "Auxiliary Battery Type" Data List Item.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Type

Set auxiliary battery type

Specified / Other

Specified: Specified auxiliary battery

Other: Non-specified auxiliary battery

-

(b) Check whether the auxiliary battery is specified or not specified.

Data List Auxiliary Battery Type Display

Equipped Auxiliary Battery

Proceed to

Other

Specified auxiliary battery

A

Other

Non-specified auxiliary battery

B

B

EXPLAIN TO CUSTOMER THAT STOP AND START SYSTEM IS LIMITED TO PREVENT AUXILIARY BATTERY MALFUNCTION WHEN A NON-SPECIFIED AUXILIARY BATTERY IS USED

A

15.

SWITCH BATTERY TYPE

Powertrain > Engine > Utility

Tester Display

Switch Battery Type

(a) Perform Switch Auxiliary Battery Type under Utility and set the Specified auxiliary battery.

Powertrain > Stop and Start > Data List

Tester Display

Battery Type

(b) Check that the "Auxiliary Battery Type" Data List item is set to "Specified".

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Type

Set auxiliary battery type

Specified / Other

Specified: Specified auxiliary battery

Other: Non-specified auxiliary battery

-

NEXT

END

16.

READ VALUE USING GTS (INTEGRATED CURRENT)

HINT:

Judge the auxiliary battery condition based on the integrated current value.

Powertrain > Stop and Start > Data List

Tester Display

Integrated Current

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Integrated Current

Auxiliary battery integrated current

Min.: -268434.456 Asec

Max.: 268435.4558 Asec

Differs according to the vehicle condition (charge/discharge conditions)

-

HINT:

Judge whether the Data List item "Integrated Current" is OK or NG according to the following table.

Powertrain > Stop and Start > Data List

Tester Display

Battery Current

Integrated Current

Status of Battery Charge Control

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Current

Auxiliary battery current

Min.: -125 A

Max.: 124.9961 A

-

-

Integrated Current

Auxiliary battery integrated current

Min.: -268434.456 Asec

Max.: 268435.4558 Asec

Differs according to vehicle condition (charge/discharge conditions)

-

Status of Battery Charge Control

Auxiliary battery charge control status

Charge 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

-

-

Standard Integrated Current Value:

Status of Auxiliary Battery Charge Control

Integrated Current

Proceed to

Charge Control Coordination Mode, Stop and Start Standalone Mode and Low Temperature Mode

Below -15444 A-sec

A

Stop and Start Restriction Mode and Temperature High/Low Mode

Below 0 A-sec

B

Cause and Action to be Taken:

Result

Cause

Action to be Taken

A

Integrated current value is limited for the stop and start control due to discharge or deterioration of the auxiliary battery

Check the auxiliary battery condition and recharge the auxiliary battery

B

  1. Electrical load is excessive
  2. Auxiliary battery deterioration
  3. Refresh charging was not completed properly
  1. Turn electrical load off as much as possible
  2. CHARGE OR REPLACE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE (refer to procedure 19)
  3. Restart the engine after waiting 30 seconds or more after stopping the engine. If refresh charging begins once more, wait until refresh charging completes while idling.
  • Initialize* the auxiliary battery integrated current using the GTS after charging the auxiliary battery, and drive the vehicle until the stop and start control operates (approximately 5 to 40 minutes).

    *: Use the GTS to perform Integrated Current Value Initialization.

    Click here

    HINT:

    If the Data List item "Integrated Current" is 0 A-sec or higher, it is not necessary to perform initialization.

  • When the auxiliary battery state sensor assembly current value is normal, recharge or replace the auxiliary battery
  • When the electrical load is large, a large amount of electrical discharge occurs. As a result, the integrated current value (auxiliary battery charge amount) tends to drop causing operation to be prohibited.
NEXT

CHARGE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE

17.

READ VALUE USING GTS (HOOD COURTESY SWITCH)

HINT:

Check the engine hood courtesy switch (hood lock assembly).

Powertrain > Stop and Start > Data List

Tester Display

Hood Courtesy Switch

(a) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Hood Courtesy Switch

Hood courtesy switch signal

ON / OFF

ON: Engine hood closed

OFF: Engine hood open

-

Result

Proceed to

When engine hood condition changes from open to closed, Data List switches from OFF to ON

A

When engine hood condition changes from open to closed, Data List remains OFF

B

HINT:

If the result is OK, the engine may have been started with the engine hood open to perform a jump start. Close the engine hood and start the engine again.

B

GO TO ENGINE HOOD COURTESY SWITCH CIRCUIT (OPERATION PROHIBITED AS ENGINE HOOD STATE DOES NOT CHANGE TO CLOSE)

A

18.

READ VALUE USING GTS (STOP&START OPERATING PROHIBITION (JUMP START))

(a) Check that the engine hood and back door are closed.

(b) Turn the ignition switch off and wait for 30 seconds or more.

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Operating Prohibition (Jump Start)

(c) Check that the Data List item "Stop&Start Operating Prohibition (Jump Start)" displays "Permit".

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Prohibition (Jump Start)

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

Permit / Prohibit

Permit: Except for jump start conditions

  • When Prohibit is displayed, stop and start control will be prohibited until the ignition switch is turned off.
  • Jump start conditions: Engine started with the engine hood or back door open and the ignition switch turned START

HINT:

  • Stop and start control may be prohibited if the engine was started with the engine hood or back door open.
  • Close the engine hood and back door and start the engine again.
NEXT

END

19.

CHARGE OR REPLACE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE

(a) Check the auxiliary battery.

Click here

HINT:

  • Charge or replace the auxiliary battery according to the check result.
  • When the cable is disconnected from the auxiliary battery terminal or the charging control system is checked (ECM connector is disconnected), do not perform this procedure, as there is a high possibility that the system may enter refresh charge mode and operation may be prohibited.

(b) Check the starter inrush current reduction relay.

Click here

(c) Start the engine.

Powertrain > Stop and Start > Data List

Tester Display

Battery Current

(d) According to the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Current

Auxiliary battery current

Min.: -125 A

Max.: 124.9961 A

-

-

(e) While idling, illuminate the headlights (Lo).

HINT:

The headlights (Lo) are illuminated so that charging control is prohibited, which sets the voltage to a fixed value.

(f) Charge the auxiliary battery for approximately 5 minutes after Auxiliary battery Current drops to 5 A or less.

HINT:

The Data List item Auxiliary battery Current decreases when the battery is charged. If the auxiliary battery is charged for 5 minutes after Auxiliary battery Current drops to 5 A or less, it can be determined that the auxiliary battery is sufficiently charged.

(g) Turn off the headlights.

(h) Turn the ignition switch off and wait for 30 seconds or more.

(i) Start the engine and check the following Data List items.

Powertrain > Stop and Start > Data List

Tester Display

Minimum Voltage (Cranking)

Minimum Voltage (Starter Solenoid Engagement)

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

Stop&Start Operating Permission (Minimum Voltage (Cranking))

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Minimum Voltage (Cranking)

Minimum voltage when cranking engine

Min.: -327.68 V

Max.: 327.67 V

6 to 11 V

Lowest auxiliary battery voltage measured after the starter starts operating.

Minimum Voltage (Starter Solenoid Engagement)

Minimum voltage when starter begins operation

Min.: -327.68 V

Max.: 327.67 V

6 to 11 V

Minimum auxiliary battery voltage while the starter starts operating.

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

Permission of stop and start control based on minimum voltage during starter solenoid engagement

NG / OK

OK: Minimum voltage when starter begins operation is equal to the threshold or higher

If both Minimum Voltage (Starter Solenoid Engagement) condition and Minimum Voltage (Cranking) condition are OK, stop and start control is permitted.

Stop&Start Operating Permission (Minimum Voltage (Cranking))

Permission of stop and start control based on minimum voltage during cranking

NG / OK

OK: Minimum voltage when cranking is equal to the threshold or higher

If both Minimum Voltage (Starter Solenoid Engagement) condition and Minimum Voltage (Cranking) condition are OK, stop and start control is permitted.

Permission Criteria (Specified Auxiliary Battery):

Tester Display

Minimum Voltage (Starter Solenoid Engagement)

Minimum Voltage (Cranking)

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

7.2 V or higher

-

Stop&Start Operating Permission (Minimum Voltage (Cranking))

-

7.2 V or higher

Permission Criteria (Non-specified Auxiliary Battery):

Tester Display

Minimum Voltage (Starter Solenoid Engagement)

Minimum Voltage (Cranking)

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))

8.92 V or higher

-

Stop&Start Operating Permission (Minimum Voltage (Cranking))

-

8.92 V or higher

(j) Replace the auxiliary battery in the following situations.

  • Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement), Minimum Voltage(Cranking)) are not OK.
  • Stop&Start Operating Permission (Minimum Voltage Starter Solenoid Engagement), Minimum Voltage (Cranking)) are OK, but Minimum Voltage (Starter Solenoid Engagement) and Minimum Voltage(Cranking) values are close to permission criteria.
NEXT

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    Refueling

    Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.

    To open the fuel-filler lid, pull the remote fuel-filler lid release.

    Toyota Yaris. Refueling

    To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.

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