Check For Intermittent Problems [12/2019 - ]

HINT: 

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS 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 [12/2019 - 10/2022] , or refer to DTC CHECK / CLEAR [10/2022 - 11/2023] , or refer to DTC CHECK / CLEAR [11/2023 - ] 

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

   Refer to CHECK MODE PROCEDURE [12/2019 - ]

3. Perform a simulation test.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

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

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [12/2019 - ]