Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Diagnostic Trouble Code Chart

Toyota Corolla Cross (2022-2025) Service Manual / Power Source & Network / Networking / Can Communication System (for Gasoline Model) / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Diagnostic Trouble Code Chart

DTC No.

Detection Item

Trouble Area

Link

B102004

Central Gateway ECU System Internal Failure

Central gateway ECU (network gateway ECU)

U117087

Lost Communication with Brake System Control Module (ch2) Missing Message
  • CAN main/branch bus lines or connector
  • Brake actuator assembly
  • Engine stop and start ECU
  • ECM
  • No. 9 global CAN junction connector

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     Central Gateway ECU System Internal Failure (B102004)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note B10

     Lost Communication with Brake System Control Module (ch2) Missing Message (U117087)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Note U117087 Lost Communication with Brake S

     Check CAN Communication Connection

    DESCRIPTION Symptom Trouble Area Check CAN Communication Connection CAN main bus line, CAN branch line or connector Power source circuit of

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     Power Source Mode does not Change to ON (IG)

    DESCRIPTION If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Related Data List and Active Test Items Problem Symptom Data List and Active Test

     ECU Power Source Circuit

    DESCRIPTION If the ignition switch is ON, the battery ECU assembly applies current to the MREL terminal to turn the IGCT relay on. This supplies power to the IGCT terminals. WIRING DIAGRAM CAUTION / NOTICE / HINT CAUTION: Refer to the precautions before inspecting high voltage circuit. Cli

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