STOP AND START: STOP AND START SYSTEM: Stop and Start System does not Operate (Battery Condition); 2024 MY RAV4 [10/2023

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000002EMAU
Model Year Start: 2024	Model: RAV4	Prod Date Range: [10/2023 - ]
Title: STOP AND START: STOP AND START SYSTEM: Stop and Start System does not Operate (Battery Condition); 2024 MY RAV4 [10/2023 - ]

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 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	-	-

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 battery charge amount being temporarily low or the 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 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 battery when stop and start control is operated.

Result	Proceed to
No display	A
Displayed in past	B

GO TO STEP 17

2.	CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

(e) 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.	READ VALUE USING TECHSTREAM (STOP&START OPERATING PERMISSION (POWER MANAGEMENT))

HINT:

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Stop&Start Operating Permission (Power Management).

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Permission (Power Management)

(e) According to the display on the Techstream, 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 battery conditions	NG / OK	OK: Stop and start control is permitted due to 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)

4.	READ VALUE USING TECHSTREAM (BATTERY TYPE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Battery Type.

Powertrain > Stop and Start > Data List

Tester Display
Battery Type

(e) 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 battery type

Specified / Other

Specified: Specified battery

Other: Non-specified battery

(f) Check whether the battery is specified or not specified.

Techstream Display	Proceed to
Specified	A
Other	B

GO TO STEP 17

5.	READ VALUE USING TECHSTREAM (STOP&START OPERATING PROHIBITION (JUMP START))

HINT:

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Stop&Start Operating Prohibition (Jump Start).

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Prohibition (Jump Start)

(e) According to the display on the Techstream, 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

Prohibit / Permit

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 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 13

6.	READ VALUE USING TECHSTREAM (STATE OF BBC)

HINT:

Check the operation of the backup boost converter.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / State of BBC.

Powertrain > Stop and Start > Data List

Tester Display
State of BBC

(e) According to the display on the Techstream, 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: 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

7.	CHECK MULTI-INFORMATION DISPLAY (CHARGING SYSTEM)

HINT:

Check for any malfunctions in the generator power generation condition.

(a) Check the condition of the charge warning.

Result	Proceed to
No charging system malfunctions are displayed on the multi-information display.	A
Charging system malfunctions are displayed on the multi-information display.	B

GO TO CHARGING SYSTEM

8.	READ VALUE USING TECHSTREAM (BATTERY FLUID TEMPERATURE, IDLING STOP RATE AND TOTAL IDLING STOP RATE)

HINT:

Check the idling stop rate.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Battery Fluid Temperature, Idling Stop Rate and Total Idling Stop Rate.

Powertrain > Stop and Start > Data List

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

(e) According to the display on the Techstream, 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 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 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 ON time

Min.: 0%

Max.: 255%

Result		Proceed to
Total Idling Stop Rate	Idling Stop Rate	Proceed to
40% or less	-	A
-	Battery fluid temperature 3°C (37°F) or higher: 50% or less
	Battery fluid temperature 0 to 3°C (32 to 37°F): [(25 / 3) x Battery fluid temperature (°C) + 25]% or less
	Battery fluid temperature Less than 0°C (32°F): [Battery fluid temperature (°C) + 25]% or less
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 battery. Operation may be prohibited again due to the customer usage conditions.

9.	READ VALUE USING TECHSTREAM (BATTERY FLUID TEMPERATURE, AMBIENT TEMPERATURE)

HINT:

Check the battery fluid temperature.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Battery Fluid Temperature and Ambient Temperature.

Powertrain > Stop and Start > Data List

Tester Display
Battery Fluid Temperature
Ambient Temperature

(e) According to the display on the Techstream, 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 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 70°C (158°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 75°C (167°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 BATTERY FLUID TEMPERATURE)

HINT:

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

10.	READ VALUE USING TECHSTREAM (STATUS OF BATTERY CHARGE CONTROL)

HINT:

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

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Status of Battery Charge Control.

Powertrain > Stop and Start > Data List

Tester Display
Status of Battery Charge Control

(e) According to the display on the Techstream, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Status of Battery Charge Control	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	D

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

HINT:

Let the vehicle idle with the battery fluid temperature at 11°C (51°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

END (STOP AND START CONTROL PROHIBITED IN BATTERY CONDITION JUDGMENT MODE)

11.	READ VALUE USING TECHSTREAM (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 battery condition.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement)) and Stop&Start Operating Permission (Minimum Voltage (Cranking)).

Powertrain > Stop and Start > Data List

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

(e) According to the display on the Techstream, 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.
If stop and start control is prohibited (NG) due to battery voltage, stop and start control will begin operating again (OK) when one of the following conditions is met
- When the engine is started and the battery voltage permission conditions are met after the ignition switch is turned off and 8 hours have elapsed
- When the battery voltage permission conditions are met after "Starter (Hood Closed)" is performed using the GTS

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 battery voltage measured after the cranking.

Minimum Voltage (Starter Solenoid Engagement)

Minimum voltage when starter begins operation

Min.: -327.68 V

Max.: 327.67 V

6 to 11 V

Minimum battery voltage while the starter starts operating.

Battery Type

Set battery type

Specified / Other

Specified: Specified battery

Other: Non-specified battery

Permission Criteria (Specified Battery):

Tester Display	Minimum Voltage (Starter Solenoid Engagement)	Minimum Voltage (Cranking)
Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))	8.7 V or higher	-
Stop&Start Operating Permission (Minimum Voltage (Cranking))	-	8.3 V or higher

Permission Criteria (Non-specified 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 16

12.	READ VALUE USING TECHSTREAM (STOP&START OPERATING PERMISSION (INTEGRATED CURRENT))

HINT:

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Stop&Start Operating Permission (Integrated Current).

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Permission (Integrated Current)

(e) According to the display on the Techstream, 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 battery fluid temperature.

Result	Proceed to
OK is displayed	A
NG is displayed	B

END (TURN ELECTRICAL LOAD OFF AS MUCH AS POSSIBLE)

GO TO STEP 15

13.	READ VALUE USING TECHSTREAM (HOOD COURTESY SWITCH)

HINT:

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Hood Courtesy Switch.

Powertrain > Stop and Start > Data List

Tester Display
Hood Courtesy Switch

(e) According to the display on the Techstream, 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

OFF / ON

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.

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

14.	READ VALUE USING TECHSTREAM (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.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Powertrain / Stop and Start / Data List / Stop&Start Operating Prohibition (Jump Start).

Powertrain > Stop and Start > Data List

Tester Display
Stop&Start Operating Prohibition (Jump Start)

(g) 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

Prohibit / Permit

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 START

HINT:

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

END

15.	READ VALUE USING TECHSTREAM (INTEGRATED CURRENT)

HINT:

Judge the battery condition based on the integrated current value.

(a) Connect the Techstream to the DLC3.

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

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

Powertrain > Stop and Start > Data List

Tester Display
Integrated Current

(e) According to the display on the Techstream, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Integrated Current

Battery integrated current

Min.: -268435 A-sec

Max.: 268435 A-sec

Differs according to 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

Battery current

Min.: -125 A

Max.: 124.99618 A

Integrated Current

Battery integrated current

-268435 to 268435 A-sec

Differs according to vehicle condition (charge/discharge conditions)

Status of Battery Charge Control

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, Low Temperature Mode and Temperature High/Low 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 battery	Check the battery condition and recharge the battery
B	Electrical load is excessive Battery deterioration Refresh charging was not completed properly	Turn electrical load off as much as possible CHARGE OR REPLACE BATTERY AFTER CHECKING 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 battery integrated current using the Techstream after charging the battery, and drive the vehicle until the stop and start control operates (approximately 5 to 40 minutes).
*: Use the Techstream 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 battery state sensor assembly current value is normal, recharge or replace the battery
When the electrical load is large, a large amount of electrical discharge occurs. As a result, the integrated current value (battery charge amount) tends to drop causing operation to be prohibited.

CHARGE AUXILIARY BATTERY AFTER CHECKING AUXILIARY BATTERY STATE

Charge auxiliary battery after checking auxiliary battery state. After replacing battery or charging battery until charging current decreases to 5 A or less, if integrated current value still does not increase to threshold value*1 or higher, initialize integrated current value*2 and drive vehicle until stop and start control operates (approximately 5 to 40 minutes).

HINT:

*1: Refer to Description of Integrated Current Value Threshold
Click here
*2: Using the Techstream, perform Integrated Current Value Initialization.
Click here

16.	CHARGE OR REPLACE BATTERY AFTER CHECKING BATTERY STATE

(a) Check the battery.

Click here

HINT:

Charge or replace the battery according to the check result.
When the cable is disconnected from the 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) Start the engine.

(e) Turn the Techstream on.

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

Powertrain > Stop and Start > Data List

Tester Display
Battery Current

(g) According to the display on the Techstream, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Battery Current

Battery current

Min.: -125 A

Max.: 124.99618 A

(h) 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.

(i) Charge the battery for approximately 5 minutes after Battery Current drops 5 A or less.

HINT:

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

(j) Turn off the headlights.

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

(l) 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 battery voltage measured after the cranking.
Minimum Voltage (Starter Solenoid Engagement)	Minimum voltage when starter begins operation	Min.: -327.68 V Max.: 327.67 V	6 to 11 V	Minimum 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 Battery):

Tester Display	Minimum Voltage (Starter Solenoid Engagement))	Minimum Voltage (Cranking)
Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement))	8.7 V or higher	-
Stop&Start Operating Permission (Minimum Voltage (Cranking))	-	8.3 V or higher

Permission Criteria (Non-specified 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

(m) Replace the battery in the following situations.

Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement) and Start Minimum Voltage (Cranking)) is less than the threshold.

HINT:

When the battery temperature is low, operation may not be permitted even if the battery is not deteriorated.

In this case, perform the inspection when the battery temperature is not low. (A fluid temperature of 20°C or higher)

END

After replacing battery or charging battery until Charging current decreases to 5 A or less, if integrated current value still does not increase to threshold value*1 or higher, initialize integrated current value*2 and drive vehicle until stop and start control operates (approximately 5 to 40 minutes).

HINT:

*1: Refer to Description of Integrated Current Value Threshold
Click here
*2: Using the Techstream, perform Integrated Current Value Initialization.
Click here

17.	CHECK BATTERY SETTINGS AND EQUIPPED BATTERY

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Battery Type.

Powertrain > Stop and Start > Data List

Tester Display
Battery Type

(e) 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 battery type

Specified / Other

Specified: Specified battery

Other: Non-specified battery

(f) Check whether the battery is specified or not specified.

Data List Battery Type Display	Equipped Battery	Proceed to
Other	Specified battery	A
Other	Non-specified battery	B

HINT:

When switching to a specified 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 BATTERY MALFUNCTION WHEN A NON-SPECIFIED BATTERY IS USED

18.	SWITCH BATTERY TYPE

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine / Utility / Switch Battery Type.

Powertrain > Engine > Utility

Tester Display
Switch Battery Type

(e) Perform Switch Battery Type under Utility and set the Specified battery.

(f) Enter the following menus: Powertrain / Stop and Start / Data List / Battery Type.

Powertrain > Stop and Start > Data List

Tester Display
Battery Type

(g) 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 battery type

Specified / Other

Specified: Specified battery

Other: Non-specified battery

END