Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Problem Symptoms Table

Toyota Corolla Cross (2022-2026) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Immobiliser System (w/o Smart Key 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.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Immobiliser System

Symptom

Suspected Area

Link

Engine does not start because no initial combustion occurs

SFI system

Engine does not start but initial combustion occurs

Proceed to "Engine does not Start but Initial Combustion Occurs"

Security indicator light does not blink

Proceed to "Security Indicator Light Does not Blink"

Key cannot be registered

Proceed to "Key Cannot be Registered"

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     Terminals Of Ecu

    TERMINALS OF ECU CHECK TRANSPONDER KEY ECU ASSEMBLY (a) Disconnect the I67 transponder key ECU assembly connector. (b) Measure the resistance and voltage according to the value(s) in the table be

     Diagnosis System

    DIAGNOSIS SYSTEM DESCRIPTION (a) The transponder key ECU assembly controls the immobiliser system. Immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link

     Data List / Active Test

    DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a

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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

     Brake Actuator (Skid Control ECU) Communication Stop Mode

    DESCRIPTION Detection Item Symptom Trouble Area Brake Actuator (Skid Control ECU) Communication Stop Mode Communication stop for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check" screen of

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