Check For Intermittent Problems
WARNING: This page is about a different car, the 2006 Lexus IS 350. 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 an intelligent tester 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.
- Switch the ECM from normal mode to check mode using an intelligent tester (See DTC CHECK / CLEAR ).
- Perform a simulation test (See INITIALIZATION ).
- Check and wiggle the harness(es), connector(s) and terminal(s) (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).