Check For Intermittent Problems
WARNING: This page is about a different car, the 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with Techstream 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.
- Clear the DTCs. Refer to DTC CHECK / CLEAR .
- Switch the ECM from normal mode to check mode using Techstream. Refer to CHECK MODE PROCEDURE .
- Perform a simulation test.
- Check and wiggle the harness(es), connector(s) and terminal(s).