Check For Intermittent Problems
WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Intelligent tester only:
Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with a 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 DTCs (see DTC CHECK / CLEAR ).
- Switch the ECM from normal mode to check mode using a intelligent tester (see CHECK MODE PROCEDURE ).
- Perform a simulation test (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
- Check and wiggle the harness(es), connector(s) and terminal(s) (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).