DTC P0C30-00: Hybrid/EV Battery State of Charge High [11/2023 - ]: Procedure

1. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   P0C30-00 only is output.	A
   DTCs except P0C30-00 are output.	B

2. Turn the ignition switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ]

Result: 

A 

See step  2

Refer to PROCEDURE - Step 2

Result

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY VOLTAGE SENSOR POWER SOURCE CIRCUIT) 

Result: 

OK 

See step  3

See step  3

Result

Result: 

NG 

REPLACE HYBRID BATTERY THERMISTOR 

Refer to REMOVAL [11/2023 - ]

Result: 

OK 

See step  4

See step  4

Result

Result: 

NG 

See step  7

Result: 

OK 

See step  5

See step  5

Result

Result: 

NG 

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY 

Refer to REMOVAL [11/2023 - ]

Result: 

OK 

See step  6

1. Turn the ignition switch to ON.
   NOTE:

   During the inspection, make sure to only turn the ignition switch to ON. Do not turn the ignition switch to ON (READY).

2. With the ignition switch to ON, monitor Data List item "Hybrid/EV Battery Current" and "Hybrid/EV Battery Current for Hybrid Battery Control" for 1 minute.

   Powertrain > Hybrid Control > Data List 

   Tester Display
   Hybrid/EV Battery Current
   Hybrid/EV Battery Current for Hybrid/EV Battery Control

   Result

   Result	Proceed to
   The value of Data List item "Hybrid Battery Current" and "Hybrid Battery Current for Hybrid Battery Control" is -0.5 A or less or 0.5 A or more.	A
   Other than above	B

3. Turn the ignition switch off.

Result: 

A 

REPLACE BATTERY VOLTAGE SENSOR 

Refer to REMOVAL [11/2023 - ]

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU 

Refer to REMOVAL [11/2023 - ]

See step  9

Result

Result: 

OK 

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY 

Refer to REMOVAL [11/2023 - ]

Result: 

NG 

REPLACE BATTERY VOLTAGE SENSOR 

Refer to REMOVAL [11/2023 - ]