HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with PA10): P0B1362; Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure; 2023 - 2025 MY Corolla HV [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000026PZ3
Model Year Start: 2023	Model: Corolla HV	Prod Date Range: [09/2022 - ]
Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with PA10): P0B1362; Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure; 2023 - 2025 MY Corolla HV [09/2022 - ]

DTC

P0B1362

Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure

DESCRIPTION

Refer to the description for DTC P0ABF11.

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DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P0B1362

Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure

A battery current sensor is malfunctioning.*

(1 trip detection logic)

HV battery junction block assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code: P0B13

*: The difference in output of the main and sub battery current sensors is large.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a battery current sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0B13 (INF P0B1362): Current sensor malfunction
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0B13 (INF P0B1362) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and turn the GTS on.
Drive the vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

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NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0B1362" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

(b) Turn the ignition switch off.

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Click here

4.	CLEAR DTC (HV BATTERY)

(a) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

(b) Drive the vehicle on urban roads for approximately 10 minutes.

5.	CHECK DTC OUTPUT (HV BATTERY)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
DTCs are not output.	A
P0B1362 is also output.	B

(b) Turn the ignition switch off.

END

REPLACE BATTERY ECU ASSEMBLY