M Indicator Does Not Come On Even Though The Paddle Shifter Is Operated In Sequential Shift Mode (2019 2020 2021)
Probable cause(s)
- F-CAN communication line error
- Gauge control module defective
- SBW shifter assembly defective
- Paddle shifter defective
NOTE:
- Check the F-CAN communication line - Refer to: F-CAN Circuit Troubleshooting(9-Speed A/T) (2016 2017 2018), or F-CAN Circuit Troubleshooting(6-Speed A/T) (2016 2017 2018), or F-CAN Circuit Troubleshooting(9-Speed A/T) (2019 2020 2021), or F-CAN Circuit Troubleshooting(6-Speed A/T) (2019 2020) .
- Check the F-CAN communication line by using the gauge control module self-diagnostic function - Refer to: Gauges Self-Diagnostic Function (2019 2020 2021) or Gauges Self-Diagnostic Function (2016 2017 2018) .
- Check the indicator drive circuit in the gauge control module by using the gauge control module self-diagnostic function - Refer to: Gauges Self-Diagnostic Function (2019 2020 2021) or Gauges Self-Diagnostic Function (2016 2017 2018) .
- Check for a poor connection at the SBW shifter assembly.
- Inspect the paddle shifter .