Tech Tips
Intelligent tester:
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 has a higher sensitivity to malfunctions than normal mode (default), which uses 2 trip detection logic.
Clear the DTCs Click here.
Change the ECM from normal mode to check mode using the intelligent tester Click here.
Perform a simulation test Click here.
Check the connectors and terminals Click here.
Wiggle the harnesses and connectors Click here.