Check For Intermittent Problems [06/2018 - ]

HINT: 

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the 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 [06/2018 - 08/2021] , or refer to DTC CHECK / CLEAR [08/2021 - 09/2022] , or refer to DTC CHECK / CLEAR [09/2022 - ]

2. Change the ECM from normal mode to check mode using the Techstream.

   Refer to CHECK MODE PROCEDURE [06/2018 - ]

3. Perform a simulation test.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

4. Check and wiggle the harness(es), connector(s) and terminal(s).

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [06/2018 - ]