Check For Intermittent Problems [08/2015 - ]

HINT: 

Inspect the ECM using check mode. Intermittent problems are easier to detect with Techstream 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 (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] , or refer to DTC CHECK / CLEAR [08/2019 - ] ).
2. Switch the ECM from normal mode to check mode using the Techstream (Refer to CHECK MODE PROCEDURE [08/2015 - ] ).
3. Perform a simulation test.
4. Check and wiggle the harness(es), connector(s) and terminal(s).