Toyota Corolla Cross: Stop and Start System does not Operate (Battery Condition)

Toyota Corolla Cross (2022-2024) 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	Battery Current	Battery Fluid Temperature (Start)	Battery Fluid Temperature
Idling Stop Rate	Total Idling Stop Rate	Integrated Current	Status of 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)
Battery Type	Ambient Temperature	Alternator Status	Stop&Start Operating Prohibited by Battery Low Voltage

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

GO TO STEP 19

2.	CHECK DTC OUTPUT

(a) Using the GTS, read the DTCs.

Powertrain > Stop and Start > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

3.	CHECK VEHICLE CONTROL HISTORY (RoB)

(a) Enter the following menus.

Powertrain > Stop and Start > Utility

Tester Display
Vehicle Control History (RoB)

(b) Check the vehicle control history (RoB).

Result	Proceed to
Vehicle Control History (RoB) are not output	A
X0879 is output	B

GO TO CHARGING SYSTEM

4.	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.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Permission (Power Management)

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

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

5.	READ VALUE USING GTS (BATTERY TYPE)

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Battery Type

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

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

GTS Display	Proceed to
Specified	A
Other	B

GO TO STEP 19

6.	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.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Prohibition (Jump Start)

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 open and the ignition switch turned START

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 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 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 closed.

GO TO STEP 16

7.	READ VALUE USING GTS (STATE OF BBC)

HINT:

Check the operation of the backup boost converter.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
State of BBC

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: Overvoltage is detected at the control IC power source in the backup boost converter Overheating is detected at the control IC power source in the backup boost converter When boosting: Malfunction is detected in the feedback circuit in the backup boost converter Too high or low output voltage.

Result	Proceed to
Normal is displayed	A
Normal is not displayed	B

GO TO BACKUP BOOST CONVERTER CIRCUIT

8.	READ VALUE USING GTS (ALTERNATOR STATUS)

HINT:

Check the power generation status of the generator.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Alternator Status

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

GO TO CHARGING SYSTEM

Click here

HINT:

Check whether Vehicle Control History (RoB) Code X0879 is output. When X0879 is output, the vehicle control history (RoB) item name can be selected to check the data from the time of control.
Click here
After performing an inspection or repairs, confirm that the stop and start system operates.

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

HINT:

Check the idling stop rate.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Battery Fluid Temperature
Idling Stop Rate
Total Idling Stop Rate

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%

Refer to Registration for how to perform learning.

Battery fluid temperature 3°C or more: 50% or less
Battery fluid temperature 0 to 3°C: [(25/3) x battery fluid temperature + 25]% or less
Battery fluid temperature less than 0°C: [battery fluid temperature + 25]% or less

Total Idling Stop Rate

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

Min.: 0%

Max.: 255%

When 40% or less, the stop and start system is permitted to operate.

Result		Proceed to
Total Idling Stop Rate	Idling Stop Rate	Proceed to
40% or less	-	A
-	50% or less	A
Other than above		B

HINT:

If Idling Stop Rate is more than threshold or Total Idling Stop Rate is more than threshold, leave the vehicle with the engine running until Idling Stop Rate drops below threshold or Total Idling Stop Rate drops below threshold.
For details on the Idling Stop Rate and Total Idling Stop Rate thresholds, refer to System Description.
Click here END (STOP AND START PROHIBITED DUE TO IDLING STOP RATE MORE THAN THRESHOLD OR TOTAL IDLING STOP RATE MORE THAN THRESHOLD)
Prohibition according to the Idling Stop Rate is used to limit a high frequency of stop and start operations in order to ensure the lifespan of the auxiliary battery. Operation may be prohibited again due to the customer usage conditions.

10.	READ VALUE USING GTS (BATTERY FLUID TEMPERATURE, AMBIENT TEMPERATURE)

HINT:

Check the auxiliary battery fluid temperature.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Battery Fluid Temperature
Ambient Temperature

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 Battery Fluid Temperature and Ambient Temperature are suitable temperature

(Battery Fluid Temperature: -10°C (14°F) or higher and 60 °C (140 °F) or less, Ambient Temperature: -5°C (23°F) or higher)

Battery Fluid Temperature or Ambient Temperature is not suitable temperature

(Battery Fluid Temperature: -15°C (5°F) or less or 65 °C (149 °F) or higher, Ambient Temperature: -6°C (21.2°F) or less)

HINT:

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

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

HINT:

If Battery Fluid Temperature is not a suitable temperature, leave the vehicle at ambient temperature to allow auxiliary battery fluid temperature to return to a suitable temperature.
Operation is prohibited due to the auxiliary battery fluid temperature to ensure engine startability and protect the auxiliary battery. This occurs due to the usage environment.

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.

(b) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Status of Battery Charge Control

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 / 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*1	-

HINT:

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

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

HINT:

Let the vehicle idle with the auxiliary battery fluid temperature at 11°C (52°F) or higher for 30 to 60 minutes to complete the refresh charge. (The refresh charge is complete when Status of Battery Charge Control changes from "Refresh Charge Mode".)

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.

GO TO CHARGING SYSTEM

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.

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

Powertrain > Stop and Start > Data List

Tester Display
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
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))	8.6 V or higher	-
Stop&Start Operating Permission (Minimum Voltage (Cranking))	-	8.3 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

GO TO STEP 18

13.	READ VALUE USING GTS (STOP&START OPERATING PROHIBITED BY BATTERY LOW VOLTAGE)

HINT:

Check whether stop and start control is prohibited due to stop and start control being performed for a short period of time when the auxiliary battery voltage was low.

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

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Prohibited by Battery Low Voltage

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop&Start Operating Prohibited by Battery Low Voltage

Prohibits stop and start control according to low auxiliary battery voltage

No / Yes

Yes: Not permitted

No: Permitted

Result	Proceed to
No is displayed	A
Yes is displayed	B

GO TO STEP 18

14.	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.

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Permission (Integrated Current)

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 status of battery charge control.

Result	Proceed to
OK is displayed	A
NG is displayed	B

END (TURN ELECTRICAL LOAD OFF AS MUCH AS POSSIBLE)

15.	READ VALUE USING GTS (INTEGRATED CURRENT)

HINT:

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

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

(b) Enter the following menus: Powertrain / Stop and Start / Data List / Integrated Current.

Powertrain > Stop and Start > Data List

Tester Display
Integrated Current

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Integrated Current

Auxiliary battery integrated current

Min.: -268434 A-sec

Max.: 268435 A-sec

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 A-sec

Max.: 268435.4558 A-sec

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 Battery Charge Control	Integrated Current	Proceed to
Charge Control Coordination Mode, Stop and Start Standalone Mode, Temperature High/Low Mode and Low Temperature Mode	Below -4554 A-sec	A
Stop and Start Restriction 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	Electrical load is excessive Auxiliary battery deterioration Refresh charging was not completed properly	Turn electrical load off as much as possible CHARGE OR REPLACE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE (refer to procedure 18) Restart the engine after waiting 30 seconds or more after ignition switch to OFF. 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.

CHARGE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE

Refer to Integrated Current Value Initialization.

Click here

(a) If the integrated current value does not exceed the threshold*1 even though the auxiliary battery has been replaced or charged until the charging current decreases to 5 A or less, perform an integrated current value initialization*2 and drive the vehicle for approximately 5 to 40 minutes until the stop and start system operates.

HINT:

*1: Refer to System Description for details on the integrated current threshold.
Click here
*2: Use the GTS to perform Integrated Current Value Initialization.
Click here

16.	READ VALUE USING GTS (HOOD COURTESY SWITCH)

HINT:

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

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Hood Courtesy Switch

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

The stop and start system is permitted to operate 30 seconds after the engine hood is closed.

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.

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

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

(a) Check that the engine hood is 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)

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 open and the ignition switch turned START

HINT:

Stop and start control may be prohibited if the engine was started with the engine hood open.
Close the engine hood and start the engine again.

END

18.	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

(d) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Battery Current

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

Differs according to vehicle condition (charge/discharge conditions)

(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 Battery Current drops to 5 A or less.

HINT:

The Data List item Battery Current decreases when the auxiliary battery is charged. If the auxiliary battery is charged for 5 minutes after 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))	8.2 V or higher	-
Stop&Start Operating Permission (Minimum Voltage (Cranking))	-	8.2 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.

CHARGE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE

HINT:

*1: Refer to System Description for details on the integrated current threshold.
Click here
*2: Use the GTS to perform Integrated Current Value Initialization.
Click here

19.	CHECK AUXILIARY BATTERY SETTINGS AND EQUIPPED AUXILIARY BATTERY

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display
Battery Type

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 Battery Type Display	Equipped Auxiliary Battery	Proceed to
Other	Specified auxiliary battery	A
Other	Non-specified auxiliary battery	B

HINT:

When switching to a specified auxiliary battery, Battery Type may not immediately switch to "Specified". To immediately switch it to "Specified", perform Switch Battery Type.

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

20.	SWITCH AUXILIARY BATTERY TYPE

(a) Enter the following menus.

Powertrain > Engine > Utility

Tester Display
Switch Battery Type

(b) Perform switch battery type under utility and set the specified auxiliary battery.

Powertrain > Stop and Start > Data List

Tester Display
Battery Type

(d) Check that the "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

END

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Front Passenger Side Door Entry Lock Function does not Operate

DESCRIPTION If the entry lock function does not operate for the front passenger door only, but the entry unlock function operates, the request code is being transmitted properly from the for passenger door. In this case, there may be a problem related to the lock sensor (connection between the certi

Check Bus 6 Line

DESCRIPTION Symptom Trouble Area There are ECUs or sensors that display a communication stop on the bus diagnostic screen. Or, there are ECUs or sensors that store a communication stop history on the "Detail" screen. CAN main

Toyota Corolla Cross: Stop and Start System does not Operate (Battery Condition)

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Front Passenger Side Door Entry Lock Function does not Operate

Check Bus 6 Line