Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Diagnostic Trouble Code Chart

Toyota Corolla Cross (2022-2026) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Immobiliser System (w/o Smart Key System) / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Immobiliser System (w/o Smart Key System)

DTC No.

Detection Item

Link

B2780

Push Switch / Key Unlock Warning Switch Malfunction

B2784

Antenna Coil Open / Short

B2793

Transponder Chip Malfunction

B2794

Unmatched Encryption Code

B2795

Unmatched Key Code

B2796

No Communication in Immobiliser System

B2797

Communication Malfunction No. 1

B2798

Communication Malfunction No. 2

B279986

Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid

B279A12

Engine Immobiliser System Circuit Short to Battery

B279C95

Engine Immobiliser System Incorrect Assembly

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     Push Switch / Key Unlock Warning Switch Malfunction (B2780)

    DESCRIPTION This DTC is stored if the transponder key ECU assembly does not detect that the unlock warning switch assembly is on even when the ignition switch is ON. DTC No. Detection Item

     Antenna Coil Open / Short (B2784)

    DESCRIPTION When an open or short circuit is detected in the antenna coil built into the transponder key coil, the transponder key ECU assembly stores this DTC. DTC No. Detection Item DTC

     Transponder Chip Malfunction (B2793,B2797)

    DESCRIPTION DTC B2793 is stored when a malfunction is found in the door control transmitter assembly during key ID code registration or a key ID code is not registered normally. Replace the door

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     XM Tuner Antenna Circuit Short to Ground (B15FE11,B15FE13)

    DESCRIPTION These DTCs are stored when a malfunction occurs in the XM antenna which is connected to the radio and display receiver assembly. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority

     Engine (ignition) switch (vehicles without a smart key system)

    Starting the engine 1. Check that the parking brake is set. 2. Check that the shift lever is in P. Do not press the shift lever button after shifting the shit position to P. 3. Firmly depress the brake pedal. 4. Turn the engine switch to START to start the engine. ■If the engine does not start

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