Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Diagnosis System



(a) If the skid control ECU detects a malfunction, the ABS warning light, brake system warning light (red indicator), brake system warning light (yellow indicator) and slip indicator light will come on in order to warn the driver. Also, if the vehicle is under the following conditions and the brake hold switch (electric parking brake switch assembly) is turned on, the brake hold operated indicator light blinks.

  • Vehicle Conditions:
    1. The driver door is closed.
    2. The driver seat belt is fastened.


(a) When the skid control ECU detects DTCs stored by related systems, it stores DTCs to indicate the malfunctioning system.

DTC for Related System Malfunction

Malfunctioning System

Output DTC

DTC Storage

System/Control Condition

Hybrid control system

DTC U029387

DTC U115087

Current and history DTCs are cleared when the system returns to normal.

  • VSC system is disabled
  • Brake hold control operation is prohibited

Airbag system

DTC U015187

Current DTCs are cleared when the system returns to normal.

Secondary collision brake control operation is prohibited


The above DTCs may be stored in the skid control ECU even if it was never stored as a history DTC or cleared in the system that caused the DTC to be stored.


     Dtc Check / Clear

    DTC CHECK / CLEAR HINT: DTCs which are stored in the skid control ECU can be displayed on the GTS. The GTS can display the confirmed and permanent DTCs. If a malfunction is detected during

     Freeze Frame Data

    FREEZE FRAME DATA FREEZE FRAME DATA/INFORMATION (a) Using the GTS, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output. CHECK FREEZE FRAME DATA AND INFORMA

     Fail-safe Chart

    FAIL-SAFE CHART FAIL-SAFE CHART (a) When a malfunction is detected in the electronically controlled brake system, the skid control ECU turns the ABS warning light, brake system warning light (re


     Riding with children

    Observe the following precautions when children are in the vehicle. Use a child restraint system appropriate for the child, until the child becomes large enough to properly wear the vehicle's seat belt. It is recommended that children sit in the rear seats to avoid accidental contact with the

     DC/DC Converter Step Up Voltage Performance (P0CA300)

    DTC SUMMARY MALFUNCTION DESCRIPTION This DTC indicates that it has been detected that the VH voltage cannot be boosted as commanded due to malfunction of the boost converter system. The cause of this malfunction may be one of the following: Internal inverter malfunction Inverter with converte

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