M Indicator Doesn't Come On When Paddle Shifter + or Paddle Shifter - Is Operated in Sportshift Mode

M indicator does not come on even when the paddle shifter + (upshift switch) or paddle shifter - (downshift switch) is operated in sequential sportshift mode

Diagnostic Procedure:

1. F-CAN communication line error

2. Gauge control module defective

3. PCM defective

Also check for:

- Check the F-CAN communication line for a DTC. B1168
- Check the indicator drive circuit in the gauge control module by using the gauge control module self-diagnostic function. Initial Inspection and Diagnostic Overview