Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000255T0
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: G16E-GTS (ENGINE CONTROL): SFI SYSTEM: CHECK FOR INTERMITTENT PROBLEMS; 2023 - 2025 MY GR Corolla [09/2022 -        ]

CHECK FOR INTERMITTENT PROBLEMS

HINT:

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

  1. Clear the DTCs.

    Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  2. Change the ECM from normal mode to check mode using the GTS.

    Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: CHECK MODE PROCEDURE

  3. Perform a simulation test.

    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

  4. Check and wiggle the harness(es), connector(s) and terminal(s).

    Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE