Hybrid Battery SOC Indicator Remains ON [09/2016 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Health Check.
5. Check DTCs.

   Result

   Result	Proceed to
   No DTCs are output	A
   DTCs are output	B

6. Turn the power switch off.

Result: 

B 

GO TO DTC CHART 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Plug-in Control / Utility / Vehicle Control History (RoB).

   Powertrain > Plug-in Control > Utility 

   Tester Display
   Vehicle Control History (RoB)

5. Enter the following menus: Powertrain / Hybrid Control / Utility / Vehicle Control History (RoB).

   Powertrain > Hybrid Control > Utility 

   Tester Display
   Vehicle Control History (RoB)

6. Check for Vehicle Control History.

   Result

   Result	Proceed to
   Vehicle Control History not stored	A
   Vehicle Control History stored	B

7. Turn the power switch off.

Result: 

B 

GO TO VEHICLE CONTROL HISTORY 

• PLUG-IN CHARGE CONTROL SYSTEM

  Refer to VEHICLE CONTROL HISTORY [09/2016 - ]

• HYBRID CONTROL SYSTEM

  Refer to VEHICLE CONTROL HISTORY [09/2016 - 01/2018] , or refer to VEHICLE CONTROL HISTORY [01/2018 - 07/2020] , or refer to VEHICLE CONTROL HISTORY [07/2020 - 06/2021] , or refer to VEHICLE CONTROL HISTORY [06/2021 - ]

Result: 

A 

See step  3

1. Discharge the HV battery by driving the vehicle in EV mode until the drive mode changes to HV mode.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Plug-in Control / Data List / Hybrid/EV Battery SOC Indicator 1 Status, Hybrid/EV Battery SOC Indicator 2 Status, Hybrid/EV Battery SOC Indicator 3 Status.

   Powertrain > Plug-in Control > Data List 

   Tester Display
   Hybrid/EV Battery SOC Indicator 1 Status
   Hybrid/EV Battery SOC Indicator 2 Status
   Hybrid/EV Battery SOC Indicator 3 Status

5. Using the electric vehicle charger cable assembly, plug-in charge the vehicle.
6. Read the value displayed on the Techstream.

   Result

   Result	Proceed to
   On the Techstream screen, ON or OFF is displayed according to the state of each SOC indicator	A
   On the Techstream screen, ON and OFF are not displayed according to the condition of each SOC indicator	B

7. Disconnect the electric vehicle charger cable assembly.
8. Turn the power switch off.

Result: 

A 

GO TO PROBLEM SYMPTOMS TABLE (PLUG-IN CHARGE CONTROL SYSTEM). Refer to  PROBLEM SYMPTOMS TABLE [09/2016 - ] 

Result: 

B 

See step  5

Refer to INSPECTION [09/2016 - ]

Result

Result: 

NG 

REPLACE INDICATOR LIGHT ASSEMBLY. Refer to  REMOVAL [09/2016 - ] 

Result: 

OK 

See step  6

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the Service Information because this may cause a malfunction.

2. Remove the EV charger duct. (for Type A)

   Refer to PROCEDURE - Step 21 [09/2016 - 05/2019] , or refer to PROCEDURE - Step 28 [05/2019 - 07/2020] , or refer to PROCEDURE - Step 28 [07/2020 - ]

3. Disconnect the N74 electric vehicle charger assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

4. Disconnect the G9 indicator light assembly (Hybrid battery SOC indicator) connector.
5. Connect the cable to the negative (-) auxiliary battery terminal.
6. Turn the power switch on (IG).
7. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   N74-26 (INL1) or G9-3 (INL1) - Body ground	Power switch on (IG)	Below 1 V
   N74-27 (INL2) or G9-2 (INL2) - Body ground	Power switch on (IG)	Below 1 V
   N74-7 (INL3) or G9-1 (INL3) - Body ground	Power switch on (IG)	Below 1 V

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Electric Vehicle Charger Assembly)
   *b	Front view of wire harness connector (to Indicator Light Assembly (Hybrid Battery SOC Indicator))

   NOTE:

   Turning the power switch on (IG) with the electric vehicle charger assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

8. Turn the power switch off.
9. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   N74-26 (INL1) or G9-3 (INL1) - Other terminals	Power switch off	10 kΩ or higher
   N74-27 (INL2) or G9-2 (INL2) - Other terminals	Power switch off	10 kΩ or higher
   N74-7 (INL3)or G9-1 (INL3) - Other terminals	Power switch off	10 kΩ or higher

10. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 2 minutes or more.
11. Reconnect the G9 indicator light assembly (Hybrid battery SOC indicator) connector.
12. Reconnect the N74 electric vehicle charger assembly connector.
13. Install the EV charger duct. (for Type A)

    Result

    Proceed to
    OK
    NG

Result: 

OK 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [09/2016 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR