DTC P0C30-390: EV Battery Pack State of Charge High: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / EV / Trouble Codes.
4. Check if DTCs related to the EV control system are output.

   Result

   Result	Proceed to
   Only two DTCs of P0C30-390 and P307F-123 are output.	A
   DTCs other than P0C30-390 and P307F-123 are output.	B

   HINT: 

   If DTC P0C30-390 is stored, P307F-123 is also stored.

5. Turn the power switch off.

B → See step   12 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / EV Battery / Trouble Codes.
4. Check if DTCs related to the EV Battery control system are output.

   Result

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

5. Turn the power switch off.

B → See step   13 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / EV / Trouble Codes.
4. Read the freeze frame data of DTC P0C30-390.

   Result

   Result	Proceed to
   OFF is displayed for "Ready Signal", "SMRP Status", "SMRB Status", "SMRB No. 2 Status" and "SMRG Status" and -0.5 A or less is displayed for "Battery No. 1 Power Resource IB" and "Battery No. 2 Power Resource IB" for all of the Data List items.	A
   Other than above	B

   HINT: 

   As the power switch on (IG) state may cause the DTC to be stored, freeze frame data is used to judge the cause of the DTC output.

5. Turn the power switch off.

B → See step   11 

A: Go to next step 

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 repair information because this may cause a malfunction.

2. Disconnect the frame wire from the electric vehicle battery assembly.
   Fig 1: Identifying Frame Wire Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the voltage according to the value(s) in the table below.
   Fig 2: Measuring Voltage Of Frame Wire Connectors & Service Plug Grip Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected [Electric Vehicle Battery Assembly] (Frame Wire (+ Side) Connector)	*2	Component without harness connected [Electric Vehicle Battery Assembly] (Frame Wire (- Side) Connector)
   *a	Component without harness connected [Electric Vehicle Battery Assembly] (Service Plug Grip Connector)	-	-

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   i1-3 - bH1-1	Power switch off	0 V
   i1-2 - bH1-1	Power switch off	0 V
   i1-1 - bH2-1	Power switch off	0 V
   i1-4 - bH2-1	Power switch off	0 V

4. Reconnect the frame wire from the electric vehicle battery assembly.

NG → See step   10 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / EV Battery / Data List / Battery No. 1 Block Voltage -V01 to V12 and Battery No. 2 Block Voltage -V01 to V12
4. Separately find the sums of Battery No. 1 Block Voltage - V01 to V12 and also Battery No. 2 Block Voltage - V01 to V12.
5. Find the difference between the sum of Battery No. 1 Block Voltage - V01 to V12 and the sum of No. 2 Battery No. 2 Block Voltage - V01 to V12.

   Standard

   The difference between the two sums has an absolute value of less than 5 V.

   HINT: 

   Refer to the following formula to calculate the difference.

   |(Battery No. 1 Block Voltage -V01 + V02 + V03 + V04 + V05 + V06 + V07 + V08 + V09 + V10 + V11 + V12) - (Battery No. 2 Block Voltage -V01 + V02 + V03 + V04 + V05 + V06 + V07 + V08 + V09 + V10 + V11 + V12)| < 5 V

   Result

   Result	Proceed to
   Difference between the two sums is 5 V or more.	A
   Difference between the two sums is less than 5 V.	B

6. Turn the power switch off.

B → See step   7 

A: Go to next step 

1. Replace the electric vehicle battery assembly. Refer to COMPONENTS .

NEXT: Go to next step 

1. Perform the Utility "Battery Pack Malfunction Fail-Safe Drive History Clear". Refer to UTILITY
   NOTE:

   For the Techstream data that was read out in step 5, if the difference between the sum of Battery No. 1 Block Voltage - V01 to V12 and the sum of No. 2 Battery No. 2 Block Voltage - V01 to V12 is 5 V or more, make sure to perform the battery pack malfunction fail-safe drive history clear after replacing the No. 1 electric vehicle battery assembly. If not performed in the correct order, this could cause the high voltage fuse in the EV battery to blow.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / EV / Trouble Codes.
4. Clear the DTCs and freeze frame data.
5. Turn the power switch off.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (READY).
3. Perform a road test.
   NOTE:

   Accelerate/decelerate gently. Avoid rapid acceleration/deceleration.

   1. Enter the following menus: Powertrain / EV / Trouble Codes.
   2. Drive the vehicle with the value of Data List item "Battery No. 1 Power Resource IB" and "Battery No. 2 Power Resource IB" between -50 A and 50 A.

      HINT: 

      Distance and driving time are not specified.

4. Turn the power switch off and leave the vehicle for 30 seconds or more.
5. Turn the power switch on (IG).
6. Enter the following menus: Powertrain / EV / Data List / Battery No. 1 Power Resource IB and Battery No. 2 Power Resource IB.
7. Check that the value of "Battery No. 1 Power Resource IB" and "Battery No. 2 Power Resource IB" is between - 0.5 A and 0.5 A with the power switch on (IG).
   NOTE:

   If the value is outside the specified range, perform the road test again.

   HINT: 

   • If the power switch is on (IG) and value of "Battery No. 1 Power Resource IB" and "Battery No. 2 Power Resource IB" is between - 0.5 A and 0.5 A, current sensor offset learning has been completed.
   • Even if the current sensor offset learning is not complete, the current sensor value will be corrected by repeating the road test a maximum of 7 times.

NEXT → END 

1. Replace the electric vehicle battery assembly. Refer to COMPONENTS .

NEXT → See step   14 

1. Even though it has been determined that the power management control ECU needs to be replaced, make sure to inspect the voltage difference between No. 1 EV battery and No. 2 EV battery before replacing it.

NEXT → See step   14