Toyota Corolla Cross: 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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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

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