Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001OBEP
Model Year Start: 2020 Model: RAV4 HV Prod Date Range: [06/2020 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): P33EC16,P33ED16; (Extreme) Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold; 2020 - 2024 MY RAV4 HV [06/2020 -        ]

DTC

P33EC16

(Extreme) Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold

DTC

P33ED16

(Extreme) Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold

DESCRIPTION

If the voltage of an HV battery cell is lower than the threshold for a certain amount of time, the battery ECU assembly will interpret this as a malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P33EC16

(Extreme) Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold

The voltage of any cell of the No. 1 HV supply stack sub-assembly has decreased excessively.

(1 trip detection logic)

  • No. 1 HV supply stack sub-assembly
  • Battery ECU assembly

Comes on

Master Warning:

Comes on

P33ED16

(Extreme) Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold

The voltage of any cell of the No. 2 HV supply stack sub-assembly has decreased excessively.

(1 trip detection logic)

  • No. 2 HV supply stack sub-assembly
  • Battery ECU assembly

Comes on

Master Warning:

Comes on

CAUTION:

Do not charge the HV battery using the THS charger if DTC P33EC16 or P33ED16 is output.

MONITOR DESCRIPTION

If the battery ECU assembly detects voltage drop in the battery cells, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P33EC (INF P33EC16), P33ED (INF P33ED16): Cell voltage too low

Required sensors/components

Battery ECU assembly

Frequency of operation

Continuous

Duration

TMC's intellectual property

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored

TMC's intellectual property

Other conditions belong to TMC's intellectual property

-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P33EC (INF P33EC16) is not detected

DTC P33ED (INF P33ED16) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): UTILITY

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch to ON and turn the Techstream on.
  6. Drive the vehicle on urban roads for approximately 10 minutes.[*1]

    HINT:

    [*1]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): P1A001C,P301A1C; Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range+

CAUTION / NOTICE / HINT

CAUTION:

  • Before the following operations are conducted, take precautions to prevent electric shock by turning the ignition switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
    • Inspecting the high-voltage system
    • Disconnecting the low voltage connector of the inverter with converter assembly
    • Disconnecting the low voltage connector of the HV battery
  • To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
  • After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
  • After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    *a

    Without waiting for 10 minutes

    Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): PRECAUTION

    HINT:

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

  • Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.

    If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

  • When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.

    *a

    Dealer

    *b

    Battery Collection Agent

    • Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned. Therefore, make sure to return all HV batteries through an authorized collection agent.
  • Before returning the HV battery, make sure to perform a recovery inspection.

    Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY (for LITHIUM-ION BATTERY): RECOVERY INSPECTION

  • Before returning the HV supply stack sub-assembly, make sure to perform a recovery inspection.

    Click here 2020 - 2021 MY RAV4 HV [06/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): RECOVERY INSPECTION 2022 - 2024 MY RAV4 HV [12/2021 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): RECOVERY INSPECTION

  • Make a note of the output DTCs as some of them may be necessary for recovery inspection of the HV battery and HV supply stack sub-assemblies.
  • After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

PROCEDURE

1.

CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Powertrain / HV Battery and Hybrid Control / Trouble Codes.

(d) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

"P33EC16 or P33ED16" only is output, or DTCs except the ones in the table below are also output.

A

DTCs of hybrid battery system in the table below are output.

B

DTCs of hybrid control system in the table below are output.

C

System

Relevant DTC

Hybrid battery system

P060A47

Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure

P060B49

Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure

P060687

Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message

Hybrid control system

P0A1F94

Hybrid/EV Battery Energy Control Module Unexpected Operation

(e) Turn the ignition switch off.

B

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

C

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 2020 - 2021 MY RAV4 HV [06/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): DIAGNOSTIC TROUBLE CODE CHART 2022 - 2024 MY RAV4 HV [12/2021 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): DIAGNOSTIC TROUBLE CODE CHART

A

2.

CHECK DTC

(a) Check the DTCs that were output when the vehicle was brought to the workshop.

Result

Proceed to

"P33EC16" is also output.

A

"P33ED16" is also output.

B

B

GO TO STEP 8

A

3.

CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Remove the No. 1 HV battery hose.

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+

(c) Check the connections of the z29 battery ECU assembly connector.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE

OK:

The connector is connected securely and there are no contact problems.

Result:

Result

Proceed to

OK

A

Not connected securely

The terminals are not damaged or corroded

B

Not connected securely

The terminals are damaged or corroded

C

(d) Install the No. 1 HV battery hose.

B

CONNECT SECURELY

C

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL

A

4.

CHECK FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Powertrain / HV battery / Trouble Codes.

(d) Read the value of freeze frame data items "Hybrid/EV battery cell 1 voltage" through "Hybrid/EV battery cell 35 voltage" for DTC P33EC16 and make a note if the value of any is 1.2 V or less.

Powertrain > HV Battery > Trouble Codes

(e) Turn the ignition switch off.

NEXT

5.

CHECK NO. 1 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL VOLTAGE)

CAUTION:

  • Be sure to wear insulated gloves and protective goggles.
  • Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Remove the No. 1 HV battery hose.

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+

(c) Disconnect the z29 battery ECU assembly connector.

(d) Measure the voltage according to the value(s) in the table below.

HINT:

Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.2 V or less only.

*a

Front view of wire harness connector

(to Battery ECU Assembly)

-

-

Hybrid Battery Cell

Tester Connection

Condition

1

z29-1 (GA0) - z29-13 (VA1)

Always

2

z29-13 (VA1) - z29-25 (VA2)

Always

3

z29-25 (VA2) - z29-2 (VA3)

Always

4

z29-2 (VA3) - z29-14 (VA4)

Always

5

z29-14 (VA4) - z29-26 (VA5)

Always

6

z29-26 (VA5) - z29-3 (VA6)

Always

7

z29-3 (VA6) - z29-15 (VA7)

Always

8

z29-15 (VA7) - z29-27 (VA8)

Always

9

z29-27 (VA8) - z29-4 (VA9)

Always

10

z29-4 (VA9) - z29-16 (VA10)

Always

11

z29-16 (VA10) - z29-28 (VA11)

Always

12

z29-28 (VA11) - z29-5 (VA12)

Always

13

z29-5 (VA12) - z29-17 (VA13)

Always

14

z29-17 (VA13) - z29-29 (VA14)

Always

15

z29-29 (VA14) - z29-6 (VA15)

Always

16

z29-6 (VA15) - z29-18 (VA16)

Always

17

z29-18 (VA16) - z29-30(VA17)

Always

18

z29-30(VA17) - z29-7 (VA18)

Always

19

z29-7 (VA18) - z29-19 (VA19)

Always

20

z29-19 (VA19) - z29-31 (VA20)

Always

21

z29-31 (VA20) - z29-8 (VA21)

Always

22

z29-8 (VA21) - z29-20(VA22)

Always

23

z29-20(VA22) - z29-32 (VA23)

Always

24

z29-32 (VA23) - z29-9 (VA24)

Always

25

z29-9 (VA24) - z29-21 (VA25)

Always

26

z29-21 (VA25) - z29-33 (VA26)

Always

27

z29-33 (VA26) - z29-10(VA27)

Always

28

z29-10(VA27) - z29-22 (VA28)

Always

29

z29-22 (VA28) - z29-34 (VA29)

Always

30

z29-34 (VA29) - z29-11 (VA30)

Always

31

z29-11 (VA30) - z29-23 (VA31)

Always

32

z29-23 (VA31) - z29-35 (VA32)

Always

33

z29-35 (VA32) - z29-12 (VA33)

Always

34

z29-12 (VA33) - z29-24 (VA34)

Always

35

z29-24 (VA34) - z29-36 (VA35)

Always

CAUTION:

Make sure not to cross the electrodes of an electrical tester measurement terminals.

NOTICE:

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Result

Proceed to

The voltage between the terminals is 1.2 V or less.

A

Other than above

B

(e) Reconnect the z29 battery ECU assembly connector.

(f) Install the No. 1 HV battery hose.

B

REPLACE BATTERY ECU ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL

A

6.

CHECK BATTERY ECU ASSEMBLY (GA0 - VA35)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

(a) Remove the battery ECU assembly.

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery ECU assembly which correspond to the HV battery cells which measured 1.2 V or less in the previous step.

*a

Component without harness connected

(Battery ECU Assembly)

-

-

Standard Resistance:

Hybrid Battery Cell

Tester Connection

(Tester Probe Polarity)

Condition

Specified Condition

1

z29-1 (GA0) (-) - z29-13 (VA1) (+)

Always

50 kΩ or more

2

z29-13 (VA1) (-) - z29-25 (VA2) (+)

Always

50 kΩ or more

3

z29-25 (VA2) (-) - z29-2 (VA3) (+)

Always

50 kΩ or more

4

z29-2 (VA3) (-) - z29-14 (VA4) (+)

Always

50 kΩ or more

5

z29-14 (VA4) (-) - z29-26 (VA5) (+)

Always

50 kΩ or more

6

z29-26 (VA5) (-) - z29-3 (VA6) (+)

Always

50 kΩ or more

7

z29-3 (VA6) (-) - z29-15 (VA7) (+)

Always

50 kΩ or more

8

z29-15 (VA7) (-) - z29-27 (VA8) (+)

Always

50 kΩ or more

9

z29-27 (VA8) (-) - z29-4 (VA9) (+)

Always

50 kΩ or more

10

z29-4 (VA9) (-) - z29-16 (VA10) (+)

Always

50 kΩ or more

11

z29-16 (VA10) (-) - z29-28 (VA11) (+)

Always

50 kΩ or more

12

z29-28 (VA11) (-) - z29-5 (VA12) (+)

Always

50 kΩ or more

13

z29-5 (VA12) (-) - z29-17 (VA13) (+)

Always

50 kΩ or more

14

z29-17 (VA13) (-) - z29-29 (VA14) (+)

Always

50 kΩ or more

15

z29-29 (VA14) (-) - z29-6 (VA15) (+)

Always

50 kΩ or more

16

z29-6 (VA15) (-) - z29-18 (VA16) (+)

Always

50 kΩ or more

17

z29-18 (VA16) (-) - z29-30 (VA17) (+)

Always

50 kΩ or more

18

z29-30 (VA17) (-) - z29-7 (VA18) (+)

Always

50 kΩ or more

19

z29-7 (VA18) (-) - z29-19 (VA19) (+)

Always

50 kΩ or more

20

z29-19 (VA19) (-) - z29-31 (VA20) (+)

Always

50 kΩ or more

21

z29-31 (VA20) (-) - z29-8 (VA21) (+)

Always

50 kΩ or more

22

z29-8 (VA21) (-) - z29-20 (VA22) (+)

Always

50 kΩ or more

23

z29-20 (VA22) (-) - z29-32 (VA23) (+)

Always

50 kΩ or more

24

z29-32 (VA23) (-) - z29-9 (VA24) (+)

Always

50 kΩ or more

25

z29-9 (VA24) (-) - z29-21 (VA25) (+)

Always

50 kΩ or more

26

z29-21 (VA25) (-) - z29-33 (VA26) (+)

Always

50 kΩ or more

27

z29-33 (VA26) (-) - z29-10 (VA27) (+)

Always

50 kΩ or more

28

z29-10 (VA27) (-) - z29-22 (VA28) (+)

Always

50 kΩ or more

29

z29-22 (VA28) (-) - z29-34 (VA29) (+)

Always

50 kΩ or more

30

z29-34 (VA29) (-) - z29-11 (VA30) (+)

Always

50 kΩ or more

31

z29-11 (VA30) (-) - z29-23 (VA31) (+)

Always

50 kΩ or more

32

z29-23 (VA31) (-) - z29-35 (VA32) (+)

Always

50 kΩ or more

33

z29-35 (VA32) (-) - z29-12 (VA33) (+)

Always

50 kΩ or more

34

z29-12 (VA33) (-) - z29-24 (VA34) (+)

Always

50 kΩ or more

35

z29-24 (VA34) (-) - z29-36 (VA35) (+)

Always

50 kΩ or more

NOTICE:

  • Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.
  • Read the resistance after the value has stabilized.
  • In order to avoid damaging the terminals of the battery ECU assembly, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery ECU assembly.

(c) Install the battery ECU assembly.

Result

Proceed to

The voltage between the terminals is 50 kΩ or more.

A

Other than above

B

A

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL

B

7.

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL

NEXT

REPLACE BATTERY ECU ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL

8.

CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Remove the No. 1 HV battery hose.

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+

(c) Check the connections of the z27 battery ECU assembly connector.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE

OK:

The connector is connected securely and there are no contact problems.

(d) Install the No. 1 HV battery hose.

Result

Proceed to

OK

A

Not connected securely

The terminals are not damaged or corroded

B

Not connected securely

The terminals are damaged or corroded

C

B

CONNECT SECURELY

C

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL

A

9.

CHECK FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Powertrain / HV battery / Trouble Codes.

(d) Read the value of freeze frame data items "Hybrid/EV battery cell 36 voltage" through "Hybrid/EV battery cell 70 voltage" for DTC P33ED16 and make a note if the value of any is 1.2 V or less.

Powertrain > HV Battery > Trouble Codes

(e) Turn the ignition switch off.

NEXT

10.

CHECK NO. 2 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL VOLTAGE)

CAUTION:

  • Be sure to wear insulated gloves and protective goggles.
  • Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Remove the No. 1 HV battery hose.

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+ 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL+

(c) Disconnect the z27 battery ECU assembly connector.

(d) Measure the voltage according to the value(s) in the table below.

HINT:

Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.2 V or less only.

*a

Front view of wire harness connector

(to Battery ECU Assembly)

-

-

Hybrid Battery Cell

Tester Connection

Condition

36

z27-1 (VAD) - z27-13 (VA36)

Always

37

z27-13 (VA36) - z27-25 (VA37)

Always

38

z27-25 (VA37) - z27-2 (VA38)

Always

39

z27-2 (VA38) - z27-14 (VA39)

Always

40

z27-14 (VA39) - z27-26 (VA40)

Always

41

z27-26 (VA40) - z27-3 (VA41)

Always

42

z27-3 (VA41) - z27-15 (VA42)

Always

43

z27-15 (VA42) - z27-27 (VA43)

Always

44

z27-27 (VA43) - z27-4 (VA44)

Always

45

z27-4 (VA44) - z27-16 (VA45)

Always

46

z27-16 (VA45) - z27-28 (VA46)

Always

47

z27-28 (VA46) - z27-5 (VA47)

Always

48

z27-5 (VA47) - z27-17 (VA48)

Always

49

z27-17 (VA48) - z27-29 (VA49)

Always

50

z27-29 (VA49) - z27-6 (VA50)

Always

51

z27-6 (VA50) - z27-18 (VA51)

Always

52

z27-18 (VA51) - z27-30 (VA52)

Always

53

z27-30 (VA52) - z27-7 (VA53)

Always

54

z27-7 (VA53) - z27-19 (VA54)

Always

55

z27-19 (VA54) - z27-31 (VA55)

Always

56

z27-31 (VA55) - z27-8 (VA56)

Always

57

z27-8 (VA56) - z27-20 (VA57)

Always

58

z27-20 (VA57) - z27-32 (VA58)

Always

59

z27-32 (VA58) - z27-9 (VA59)

Always

60

z27-9 (VA59) - z27-21 (VA60)

Always

61

z27-21 (VA60) - z27-33 (VA61)

Always

62

z27-33 (VA61) - z27-10 (VA62)

Always

63

z27-10 (VA62) - z27-22 (VA63)

Always

64

z27-22 (VA63) - z27-34 (VA64)

Always

65

z27-34 (VA64) - z27-11 (VA65)

Always

66

z27-11 (VA65) - z27-23 (VA66)

Always

67

z27-23 (VA66) - z27-35 (VA67)

Always

68

z27-35 (VA67) - z27-12 (VA68)

Always

69

z27-12 (VA68) - z27-24 (VA69)

Always

70

z27-24 (VA69) - z27-36 (VA70)

Always

CAUTION:

Make sure not to cross the electrodes of an electrical tester measurement terminals.

NOTICE:

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Result

Proceed to

The voltage between the terminals is 1.2 V or less.

A

Other than above

B

(e) Reconnect the z27 battery ECU assembly connector.

(f) Install the No. 1 HV battery hose.

B

REPLACE BATTERY ECU ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL

A

11.

CHECK BATTERY ECU ASSEMBLY (VAD - VA70)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

(a) Remove the battery ECU assembly.

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery ECU assembly which correspond to the HV battery cells which measured 1.2 V or less in the previous step.

*a

Component without harness connected

(Battery ECU Assembly)

-

-

Standard Resistance:

Hybrid Battery Cell

Tester Connection

(Tester Probe Polarity)

Condition

Specified Condition

36

z27-1 (VAD) (-) - z27-13 (VA36) (+)

Always

50 kΩ or more

37

z27-13 (VA36) (-) - z27-25 (VA37) (+)

Always

50 kΩ or more

38

z27-25 (VA37) (-) - z27-2 (VA38) (+)

Always

50 kΩ or more

39

z27-2 (VA38) (-) - z27-14 (VA39) (+)

Always

50 kΩ or more

40

z27-14 (VA39) (-) - z27-26 (VA40) (+)

Always

50 kΩ or more

41

z27-26 (VA40) (-) - z27-3 (VA41) (+)

Always

50 kΩ or more

42

z27-3 (VA41) (-) - z27-15 (VA42) (+)

Always

50 kΩ or more

43

z27-15 (VA42) (-) - z27-27 (VA43) (+)

Always

50 kΩ or more

44

z27-27 (VA43) (-) - z27-4 (VA44) (+)

Always

50 kΩ or more

45

z27-4 (VA44) (-) - z27-16 (VA45) (+)

Always

50 kΩ or more

46

z27-16 (VA45) (-) - z27-28 (VA46) (+)

Always

50 kΩ or more

47

z27-28 (VA46) (-) - z27-5 (VA47) (+)

Always

50 kΩ or more

48

z27-5 (VA47) (-) - z27-17 (VA48) (+)

Always

50 kΩ or more

49

z27-17 (VA48) (-) - z27-29 (VA49) (+)

Always

50 kΩ or more

50

z27-29 (VA49) (-) - z27-6 (VA50) (+)

Always

50 kΩ or more

51

z27-6 (VA50) (-) - z27-18 (VA51) (+)

Always

50 kΩ or more

52

z27-18 (VA51) (-) - z27-30 (VA52) (+)

Always

50 kΩ or more

53

z27-30 (VA52) (-) - z27-7 (VA53) (+)

Always

50 kΩ or more

54

z27-7 (VA53) (-) - z27-19 (VA54) (+)

Always

50 kΩ or more

55

z27-19 (VA54) (-) - z27-31 (VA55) (+)

Always

50 kΩ or more

56

z27-31 (VA55) (-) - z27-8 (VA56) (+)

Always

50 kΩ or more

57

z27-8 (VA56) (-) - z27-20 (VA57) (+)

Always

50 kΩ or more

58

z27-20 (VA57) (-) - z27-32 (VA58) (+)

Always

50 kΩ or more

59

z27-32 (VA58) (-) - z27-9 (VA59) (+)

Always

50 kΩ or more

60

z27-9 (VA59) (-) - z27-21 (VA60) (+)

Always

50 kΩ or more

61

z27-21 (VA60) (-) - z27-33 (VA61) (+)

Always

50 kΩ or more

62

z27-33 (VA61) (-) - z27-10 (VA62) (+)

Always

50 kΩ or more

63

z27-10 (VA62) (-) - z27-22 (VA63) (+)

Always

50 kΩ or more

64

z27-22 (VA63) (-) - z27-34 (VA64) (+)

Always

50 kΩ or more

65

z27-34 (VA64) (-) - z27-11 (VA65) (+)

Always

50 kΩ or more

66

z27-11 (VA65) (-) - z27-23 (VA66) (+)

Always

50 kΩ or more

67

z27-23 (VA66) (-) - z27-35 (VA67) (+)

Always

50 kΩ or more

68

z27-35 (VA67) (-) - z27-12 (VA68) (+)

Always

50 kΩ or more

69

z27-12 (VA68) (-) - z27-24 (VA69) (+)

Always

50 kΩ or more

70

z27-24 (VA69) (-) - z27-36 (VA70) (+)

Always

50 kΩ or more

NOTICE:

  • Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.
  • Read the resistance after the value has stabilized.
  • In order to avoid damaging the terminals of the battery ECU assembly, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery ECU assembly.

(c) Install the battery ECU assembly.

Result

Proceed to

The voltage between the terminals is 50 kΩ or more.

A

Other than above

B

A

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL

B

12.

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

Click here 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY STACK (for LITHIUM-ION BATTERY): REMOVAL

NEXT

REPLACE BATTERY ECU ASSEMBLY 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): REMOVAL