Clutch drag check*
1. Connect the Examiner diagnostics tool .
2. Start the car and put the gear to idle.
3. With the engine running at minimum, read the value of
the clutch disk speed parameter
4. If the clutch disk speed is over zero there is a
clutch drag condition
5. Calibrate the clutch parameters in active diagnostics
through "enable clutch self calibration ".
6. Repeat from step 2 to step 4. If the fault no longer
occurs: continue from step 7.
7. If there is no clutch drag, warm the engine and the
clutch by a series of take-offs (with the accelerator
pressed down over half of its stroke)
8. Repeat steps 1 to 4
9. If the situation of step 4 occurs, there is a clutch
drag condition and therefore the clutch mechanism needs to
be replaced; otherwise there is no clutch drag.
* Note
that clutch drag often occurs with a hot engine