Contents Section: Communication Devices All sections

LIN Communication System (Diagnostic Codes): Overview Toyota Corolla X рестайлинг

Communication Devices 4 illustrations ~167 words

DESCRIPTION

This DTC is output when there is an open, short or ECU communication malfunction between the main body ECU (instrument panel junction block) and certification ECU (smart key ECU assembly).

DTC No.DTC Detection ConditionTrouble Area
B2287There is an open, short or ECU communication malfunction between the main body ECU (instrument panel junction block) and certification ECU (smart key ECU assembly).Certification ECU (smart key ECU assembly) Main body ECU (instrument panel junction block) Wire harness or connector

Scheme 173

Scheme 173: WIRING DIAGRAM

The certification ECU (smart key ECU assembly) monitors communication between all the ECUs connected to the certification ECU system LIN bus lines. When the certification ECU (smart key ECU assembly) detects an error in communication with all the ECUs connected to the certification ECU system LIN bus lines at a set interval and 3 times in a row, DTC B2785 will be output.

DTC No.DTC Detection ConditionTrouble Area
B2785Error in LIN communication between ECUs and an open or short in communication lines LIN communication from the certification ECU (smart key ECU assembly) stops for a set amount of time or moreCertification ECU (smart key ECU assembly) Main body ECU (instrument panel junction block) Steering lock ECU (steering lock actuator assembly) ID code box (immobilizer code ECU) Wire harness or connector

Scheme 174

Scheme 174: WIRING DIAGRAM

This DTC is output when LIN communication between the certification ECU (smart key ECU assembly) and the steering lock ECU (steering lock actuator assembly) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B2786No communication between the steering lock ECU (steering lock actuator assembly) and the certification ECU (smart key ECU assembly) for more than 10 secondsSteering lock ECU (steering lock actuator assembly) Certification ECU (smart key ECU assembly) Wire harness or connector

Scheme 175

Scheme 175: WIRING DIAGRAM

This DTC is output when LIN communication between the certification ECU (smart key ECU assembly) and the ID code box (immobilizer code ECU) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B2789No communication between the certification ECU (smart key ECU assembly) and the ID code box (immobilizer code ECU) for more than 10 secondsID code box (immobilizer code ECU) Certification ECU (smart key ECU assembly) Wire harness or connector

Scheme 176

Scheme 176: WIRING DIAGRAM