Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000028I38
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the telematics system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

HINT:

  • In troubleshooting, check that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points for analysis:

    What

    Vehicle model, system name

    When

    Date, time, occurrence frequency

    Where

    Road conditions

    Under what conditions?

    Driving conditions, weather conditions

    How did it happen?

    Problem symptoms

NEXT

3.

INSPECT BATTERY

(a) Measure the battery voltage.

Standard voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT

4.

CHECK CAN COMMUNICATION SYSTEM*

(a) Check if CAN communication system DTCs are output.

Click here 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Result

Proceed to

CAN DTCs are not output.

A

CAN DTCs are output.

B

B

GO TO CAN COMMUNICATION SYSTEM 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

A

5.

CHECK DTC*

(a) Check for DTCs.

Safety Connect System: Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Telematics System: Click here 2021 - 2025 MY Corolla Corolla Hatchback GR Corolla [04/2020 -        ]; TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): DTC CHECK / CLEAR

Body Electrical > Telematics > Trouble Codes

Result

Proceed to

DTCs are not output.

A

Safety connect system DTCs are output.

B

Telematics system DTCs are output.

C

B

GO TO SAFETY CONNECT SYSTEM

C

GO TO TELEMATICS SYSTEM

A

6.

CHECK VEHICLE OPERATION HISTORY*

(a) Check for vehicle control history and note any codes that are output.

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Gasoline Model): VEHICLE CONTROL HISTORY

Result

Proceed to

No vehicle control history is output

A

Any vehicle control history is output

B

B

GO TO VEHICLE CONTROL HISTORY

A

7.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in Problem Symptoms Table.

A

Fault is listed in Problem Symptoms Table.

B

HINT:

If the symptom does not recur and no DTCs are output, perform the simulation method.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

GO TO STEP 9

A

8.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): TERMINALS OF ECU

(b) Data List / Active Test

Click here 2021 - 2025 MY Corolla Corolla Hatchback GR Corolla [04/2020 -        ]; TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): DATA LIST / ACTIVE TEST

NEXT

9.

REPAIR OR REPLACE

NEXT

10.

CONFIRMATION TEST

NEXT

END