Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Problem Symptoms Table

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / 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 checking the suspected areas in the order they are listed. Replace parts as necessary.

Airbag System

Symptom

Suspected Area

Link

The SRS warning light turns off after the primary check, but then comes on
  • Wire harness
  • CAN communication system
  • Combination meter assembly
  • Airbag ECU assembly

When the ignition switch is turned to ON, the SRS warning light sometimes comes on after approximately 6 seconds
  • Wire harness
  • CAN communication system
  • Combination meter assembly
  • Airbag ECU assembly

The SRS warning light always comes on even when DTCs are not output
  • Wire harness
  • Combination meter assembly
  • Airbag ECU assembly

When the ignition switch is turned to ON, the SRS warning light does not come on
  • Wire harness
  • Combination meter assembly
  • Airbag ECU assembly

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     Terminals Of Ecu

    TERMINALS OF ECU AIRBAG ECU ASSEMBLY Terminal No. Terminal Symbol Destination O1-3 PLR- Rear pretensioner squib LH (Rear seat outer belt assembly LH) O1-4 PLR+

     Freeze Frame Data

    FREEZE FRAME DATA DESCRIPTION (a) When an airbag system DTC is stored, the airbag ECU assembly stores the current vehicle (ECU or sensor) state as Freeze Frame Data. CHECK FREEZE FRAME DATA CAUTION:

     Check Mode Procedure

    CHECK MODE PROCEDURE CHECK MODE: DTC CHECK (a) Select "Check Mode" and proceed with checking using the GTS. Body Electrical > SRS Airbag > Utility Tester Display Check Mode NOTI

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     ABS Pump Motor Control Internal Electronic Failure (C052C49)

    DESCRIPTION The ABS motor relay and pump motor are built into the brake actuator assembly. If the skid control ECU (brake actuator assembly) detects a malfunction in the drive circuit of the pump motor, this DTC is stored. DTC No. Detection Item DTC Detection

     Basic Inspection

    CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following procedure, the location of the problem ca

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