| Last Modified: 06-05-2026 | 6.11:8.1.0 | Doc ID: RM100000001O4EO |
| Model Year Start: 2021 | Model: GR Corolla | Prod Date Range: [04/2020 - ] |
| Title: TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM; 2021 - 2026 MY GR Corolla Corolla Corolla Hatchback [04/2020 - ] | ||
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Diagnostic Trouble Codes (DTCs) for the telematics system can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair it.
2. CHECK DLC3
(a) Check the DLC3.
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![2019 - 2026 MY GR Corolla Corolla Corolla Hatchback Corolla HV [06/2018 - ]; INTRODUCTION: HOW TO USE THIS MANUAL: GENERAL INFORMATION](/t3Portal/stylegraphics/info.gif)
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