GSIC - Global Service Information Center

# ECD SYSTEM > CHECK FOR INTERMITTENT PROBLEMS

## for Preparation Click here

HINT:

  Intelligent tester:

  Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect when the ECM is in check mode with the intelligent tester. In check mode, the ECM uses 1 trip detection logic, which has a higher sensitivity to malfunctions than normal mode (default), which uses 2 trip detection logic.

CHECK FOR INTERMITTENT PROBLEMS

1. Clear the DTCs (Click here).

2. Change the ECM from normal mode to check mode using the intelligent tester (Click here).

3. Perform a simulation test (Click here).

4. Check the connector and terminal (Click here).

5. Wiggle the harness and the connector (Click here).