HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): BASIC INSPECTION; 2020 - 2021 MY RAV4 HV [06/2020

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001OE6M
Model Year Start: 2020	Model: RAV4 HV	Prod Date Range: [06/2020 - 12/2021]
Title: HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): BASIC INSPECTION; 2020 - 2021 MY RAV4 HV [06/2020 - 12/2021]

BASIC INSPECTION

DESCRIPTION

When replacing the No. 1 HV supply stack sub-assembly or No. 2 HV supply stack sub-assembly, it is necessary to check, adjust and equalize the SOC of the HV battery. Otherwise, the engine may run longer than normal, resulting in a decrease in fuel efficiency.

PROCEDURE

1.	READ VALUE USING TECHSTREAM (Hybrid Battery SOC)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid/EV Battery SOC.

(e) Read the Data List.

Powertrain > Hybrid Control > Data List

Tester Display
Hybrid/EV Battery SOC

Result	Proceed to
"Hybrid/EV Battery SOC" is 55 to 65%	A
Other than above	B

(f) Turn the power switch off.

GO TO STEP 3

2.	ADJUST HV BATTERY SOC

HINT:

If the following procedure (charging or discharging of the HV battery) cannot be performed due to the condition of the vehicle, proceed to the next step.

(a) Apply the parking brake and chock all 4 wheels.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid/EV Battery SOC.

(f) Depress the accelerator pedal and brake pedal simultaneously or leave the vehicle with neutral (N) selected until the value of Data List item "Hybrid/EV Battery SOC" is between 55% and 65%.

Powertrain > Hybrid Control > Data List

Tester Display
Hybrid/EV Battery SOC

HINT:

Depressing the accelerator pedal and brake pedal simultaneously will cause the HV battery to charge and the value of "Hybrid/EV Battery SOC" to increase.
Leaving the vehicle with neutral (N) selected will cause the HV battery to discharge and the value of "Hybrid/EV Battery SOC" to decrease.

(g) Turn the power switch off.

3.	REPLACE HV BATTERY (NO. 1 HV SUPPLY STACK SUB-ASSEMBLY or NO. 2 HV SUPPLY STACK SUB-ASSEMBLY)

Click here

ROAD TEST

(a) Turn the power switch on (READY).

(b) Drive the vehicle on urban roads for approximately 10 minutes.

HINT:

Perform this procedure in order to ensure the accuracy of the inspection in the next step.

5.	READ VALUE USING TECHSTREAM (Delta SOC)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Delta SOC.

(e) Check and Record the Data List.

Powertrain > Hybrid Control > Data List

Tester Display
Delta SOC

Result	Proceed to
"Delta SOC" is 0 to 5%	A
Other than above	B

(f) Turn the power switch off.

END

6.	TIME TO EQUALIZE SOC

(a) According to the value of Data List item "Delta SOC" recorded in the previous step, equalize the SOC.

"Delta SOC"	Time to Equalize SOC (Total time necessary to leave power switch off)
6 to 10%	29 hours
11 to 15%	49 hours
16 to 20%	66 hours
21 to 25%	85 hours
26 to 30%	103 hours

HINT:

SOC equalization is performed when the power switch is off.
It is not necessary to leave the power switch off continuously for the time shown in the table. The time shown is the cumulative time the power switch must be off after a HV supply stack sub-assembly has been replaced for SOC equalization to complete.

END