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Check For Intermittent Problems [10/2015 - ]

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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 [10/2015 - ] 

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

    Refer to CHECK MODE PROCEDURE [10/2015 - ] 

  3. Perform a simulation test.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 11/2017] , or 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 - ]