Check For Intermittent Problems [11/2017 - ]

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 [11/2017 - ] 

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

   Refer to CHECK MODE PROCEDURE [11/2017 - ] 

3. Perform a simulation test.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 10/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 11/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2019 - 09/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]

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

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2014 - ]