Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Check For Intermittent Problems

Toyota Corolla Cross (2022-2025) Service Manual / Engine & Hybrid System / M20a-fks (engine Control) / Sfi System / Check For Intermittent Problems

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

    Click here

  3. Perform a simulation test.

    Click here

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

    Click here

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