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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 118 (Can Communication System (HV) - Circuit Tests (1 Of 9) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Certification ECU Communication Stop Mode [12/2019 - 11/2023] >> Description

Certification ECU Communication Stop Mode [12/2019 - 11/2023]: Description

WARNING: This page is about a different variant/trim than selected.
Detection Item Symptom Trouble Area
Certification ECU Communication Stop Mode Communication stop for "Certification (Smart)" is indicated on the "Communication Bus Check" screen of the GTS.
Refer to DIAGNOSIS SYSTEM [12/2019 - 09/2020] , or refer to DIAGNOSIS SYSTEM [09/2020 - 10/2021] , or refer to DIAGNOSIS SYSTEM [10/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 11/2023]
  • Certification ECU (smart key ECU assembly) branch line or connector
  • Power source circuit of certification ECU (smart key ECU assembly)
  • Certification ECU (smart key ECU assembly) ground circuit
  • Certification ECU (smart key ECU assembly)
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