DTC P0C30-00: Hybrid/EV Battery State of Charge High [12/2022 - ]: Procedure

Pre-procedure1

• None

• Check for DTCs.

  Powertrain > HV Battery > Trouble Codes 

  Powertrain > Hybrid Control > Trouble Codes 

  Result

  Result	Proceed to
  "P0C30-00" only is output.	A
  DTCs except "P0C30-00" of hybrid battery system are output.	B
  DTCs except "P0C30-00" of hybrid control system are output.	C

Post-procedure1

• Turn the ignition switch off.

Result: 

B 

GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2022 - ] 

Result: 

C 

GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2022 - ] 

Result: 

A 

See step  2

Pre-procedure1

• None

• Read the freeze frame data of DTC P0C30-00.

  Powertrain > HV Battery > Trouble Codes 

  Result

  Result	Proceed to
  OFF is displayed for "Ready Signal", "SMRB Control Status" and "SMRG Control Status" and -0.5 A or less is displayed for "Hybrid/EV Battery Current".	A
  Other than above	B

  HINT: 

  As the ignition switch ON state may cause the DTC to be stored, freeze frame data is used to judge the cause of the DTC output.

Post-procedure1

• Turn the ignition switch off.

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [12/2022 - 03/2023]  , or refer to  REMOVAL [03/2023 - ] 

Result: 

A 

See step  3

Pre-procedure1

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

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

• Disconnect the high voltage cable connectors from the No. 1 traction battery device box.
  NOTE:

  Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

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

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a

  Component without harness connected (No. 1 Traction Battery Device Box)

  -

  -

  Standard Resistance (SMRB)

  Tester Connection	Condition	Specified Condition	Result
  e13-1 (CBI) - z15-1 (+)	Ignition switch off	10 kΩ or higher	kΩ

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

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a

  Component without harness connected (No. 1 Traction Battery Device Box)

  -

  -

  Standard Resistance (SMRG)

  Tester Connection	Condition	Specified Condition	Result
  e12-1 (CEI) - z16-1 (-)	Ignition switch off	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the high voltage cable connectors to the No. 1 traction battery device box.

Result: 

NG 

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX. Refer to  REMOVAL [12/2022 - ] 

Result: 

OK 

See step  4

Pre-procedure1

• Turn the ignition switch to ON (READY).
• Perform a road test.
  NOTE:

  Accelerate/decelerate gently. Avoid rapid acceleration/deceleration.

  1. Drive the vehicle with the value of Data List item "Hybrid/EV Battery Current" between -50 A to 50 A.

     Powertrain > HV Battery > Data List 

     Tester Display
     Hybrid/EV Battery Current

     HINT: 

     Distance and driving time are not specified.

• Turn the ignition switch off and leave the vehicle for 30 seconds or more.
• Turn the ignition switch to ON.

• Check that the value of "Hybrid/EV Battery Current" is between - 0.5 A and 0.5 A with the ignition switch ON.

  Powertrain > HV Battery > Data List 

  Tester Display
  Hybrid/EV Battery Current

  NOTE:

  • If the value is outside the specified range, perform the road test again.
  • This DTC may be output if Current Sensor Offset Learning has not been completed.

  HINT: 

  • If the ignition switch is ON and value of "Hybrid/EV Battery Current" 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.

  Result

  Proceed to
  NEXT

Post-procedure1

• Turn the ignition switch off.

Result: 

NEXT 

END