Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Hybrid/EV Battery Stack 1 Circuit Resistance Above Threshold (P33E01B,P33E11B)

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / Hybrid / Battery Control / Hybrid Battery System / Hybrid/EV Battery Stack 1 Circuit Resistance Above Threshold (P33E01B,P33E11B)

DESCRIPTION

The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the internal resistance of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P33E01B

Hybrid/EV Battery Stack 1 Circuit Resistance Above Threshold

The internal resistance of any cell of the No. 1 HV supply stack sub-assembly exceeds the threshold.

(1 trip detection logic)

  • HV battery
  • HV battery junction block assembly

Comes on

Master Warning:

Comes on

SAE Code: P33E0

P33E11B

Hybrid/EV Battery Stack 2 Circuit Resistance Above Threshold

The internal resistance of any cell of the No. 2 HV supply stack sub-assembly exceeds the threshold.

(1 trip detection logic)

  • HV battery
  • HV battery junction block assembly

Comes on

Master Warning:

Comes on

SAE Code: P33E1

HINT:

These DTCs can be stored after clearing DTCs and driving the vehicle for approximately 10 minutes.

MONITOR DESCRIPTION

If there is an abnormal internal resistance in the battery cells, the battery ECU assembly determines that a malfunction has occurred. When the malfunction detection condition is satisfied, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P33E0 (INF P33E01B), P33E1 (INF P33E11B): Battery cell malfunction

Required sensors/components

Battery ECU assembly / Battery current sensor

Frequency of operation

Continuous

Duration

TMC's intellectual property

MIL operation

1 driving cycle

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 P33E0 (INF P33E01B) is not detected

DTC P33E1 (INF P33E11B) 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

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

    (This DTC may not be stored if the vehicle is stopped or being driven at a constant speed.)

    HINT:

    [*1]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
  8. 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.

Click here

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

"P33E01B or P33E11B" 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.

B

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

C

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

A

2.

CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the vehicle has been driven.

Result

Proceed to

Total distance driven is less than 200000 km (124280 mile)

A

Total distance driven is 200000 km (124280 mile) or more

Current total distance driven - total distance driven when HV battery junction block assembly replaced = less than 200000 km (124280 mile) *1

Other than above

B

HINT:

*1: If the HV battery junction block assembly has been replaced, use the total distance driven since it was replaced.

A

REPLACE HV BATTERY

B

3.

REPLACE HV BATTERY

Click here

NEXT

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

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