GSIC - Global Service Information Center

# SFI SYSTEM > CHECK FOR INTERMITTENT PROBLEMS

## for Preparation Click here

HINT:

  Intelligent Tester only:

  Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with the 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.

1. Clear the DTCs (Click here).
2. Check the ECM from normal mode to check mode using the intelligent tester (Click here).
3. Perform a simulation test (Click here).
4. Check the connectors and terminals (Click here).
5. Wiggle the harnesses and connectors (Click here).