Check For Intermittent Problems [09/2015 - ]

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 [09/2015 - ] 

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

   Refer to CHECK MODE PROCEDURE [09/2015 - ] 

3. Perform a simulation test.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - 08/2016] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - 12/2017] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 08/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]

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

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2015 - ]