Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Motor/Generator Shutdown Signal (Hybrid/EV Side) Stuck Off (P33B99F)

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / Hybrid / Battery Control / Hybrid Control System / Motor/Generator Shutdown Signal (Hybrid/EV Side) Stuck Off (P33B99F)

DTC SUMMARY

MALFUNCTION DESCRIPTION

The hybrid vehicle control ECU detects malfunctions which prevent the inverter with converter assembly emergency shutdown circuit (HSDN) from shutting down the hybrid control system. Detection is performed when the ignition switch is turned to ON and during the shutdown sequence when the ignition switch is turned off. If the following condition is detected, this DTC will be stored. If the following condition is not detected, DTC P321E9F will be stored.

  • Hybrid vehicle control ECU malfunction

DESCRIPTION

Refer to the description for DTC P321E9F.

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DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P33B99F

Motor/Generator Shutdown Signal (Hybrid/EV Side) Stuck Off

When the HV gate shutdown function check is performed (when the ignition switch is turned from ON (READY) to off) and checked at the motor generator control ECU (MG ECU), the shutdown signals sent by the main CPU and sub CPU of the hybrid vehicle control ECU do not match.

(1 trip detection logic)

Hybrid vehicle control ECU

Does not come on

Master Warning:

Comes on

SAE Code:

P33B9

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.

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  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 (READY) and wait for 30 seconds or more.
  6. Turn the ignition switch off and wait for 2 minutes or more.
  7. Turn the ignition switch to ON (READY) and wait for 30 seconds or more.
  8. Turn the ignition switch off and wait for 2 minutes or more.
  9. Turn the ignition switch to ON and turn the GTS on.
  10. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  11. 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 driving pattern again.

PROCEDURE

1.

REPLACE HYBRID VEHICLE CONTROL ECU

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NEXT

END

    READ NEXT:

     Motor/Generator Shutdown Signal (MG Side) Stuck Off (P33BF9F)

    DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects malfunctions which prevent the inverter with converter assembly emergency shutdown circuit (HSDN) from shutting down the hybr

     Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U117B87)

    DESCRIPTION The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the ECM, shift control ECU, MG ECU, skid control ECU, main body ECU, airbag sensor assembly,

     Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message (U011187)

    DESCRIPTION The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the battery ECU assembly. DTC No. Detection Item DTC Detection Condition

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     Precaution

    PRECAUTION CHARGING SYSTEM PRECAUTION CAUTION: This vehicle contains high voltage circuits standardized with orange colored wiring and connectors, so follow the instructions in this manual to perform the procedures correctly. Click here If the correct procedures are not followe

     Problem Symptoms Table

    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by check

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