Hybrid Battery SOC Indicator does not Come 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. Connect the electric vehicle charger cable assembly to a known good AC power supply and plug-in charge the vehicle until the HV battery is fully charged.

   HINT: 

   The charging indicator illuminates when plug-in charging starts, and turns off when charging is complete.

2. After the HV battery is fully charged, disconnect the electric vehicle charger cable assembly.

   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. Connect the electric vehicle charger cable assembly to a known good AC outlet and then connect the charging connector to the vehicle.
6. Read the value displayed on the Techstream.

   Powertrain > Plug-in Control > Data List 

   Tester Display	Measurement Item	Range	Normal Condition
   Hybrid/EV Battery SOC Indicator 1 Status	Hybrid battery SOC indicator 1 status	ON or OFF	Hybrid battery SOC indicator 1 illuminated: ON
   Hybrid/EV Battery SOC Indicator 2 Status	Hybrid battery SOC indicator 2 status	ON or OFF	Hybrid battery SOC indicator 2 illuminated: ON
   Hybrid/EV Battery SOC Indicator 3 Status	Hybrid battery SOC indicator 3 status	ON or OFF	Hybrid battery SOC indicator 3 illuminated: ON

   HINT: 

   If the HV battery is already fully charged when the electric vehicle charger cable assembly is connected, all 3 of the SOC indicators will illuminate for approximately 15 seconds.

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

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   N74-26 (INL1) - G9-3 (INL1)	Power switch off	Below 1 Ω
   N74-27 (INL2) - G9-2 (INL2)	Power switch off	Below 1 Ω
   N74-7 (INL3) - G9-1 (INL3)	Power switch off	Below 1 Ω

   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))

   Standard Resistance (Check for Short)

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

6. Reconnect the G9 indicator light assembly (Hybrid battery SOC indicator) connector.
7. Reconnect the N74 electric vehicle charger assembly connector.
8. Install the EV charger duct. (for Type A)

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Disconnect the G9 indicator light assembly (Hybrid battery SOC indicator) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G9-5 (LP) - Body ground	Always	Below 1 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

3. Reconnect the G9 indicator light assembly (Hybrid battery SOC indicator) connector.

   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