Credit to Drex Chan
UPDATED VERSION
A] INITIAL ADAPTATION (USER/TECHNICIAN)
In order to compensate for the manufacturing tolerance, an initial adaptation for the clutch is required after:
- a reflash of TCU software, or
- a replacement of TCU, or
- a replacement of the transmission, or
- a replacement of a flatout battery
The adaptation value in the TCU can be wiped off due to long term power disruption. The CVT check light flashes once every 2 seconds if the initial adaptation is not performed. It is not recommended to drive the vehicle in such condition to avoid excessive clutch wear.
*In the case that the CVT check light doesn't go off after this Initial Adaptation procedure is performed, send the car to the nearest SC to clear the warning.
B] PERIODICAL ADAPTATION (USER/TECHNICIAN)
TCU keeps adapting to compensate for the wear and tear as you use the vehicle. However, due to the rarity of using certain drive modes (i.e reverse), the TCU may not be able to adapt to every drive modes. This may result in the 'engine die off' issue while reversing, due to poor clutch lock-up.
Users can perform the following adaptation procedure periodically to compensate for the wear and tear.
for CVT fluid level inspection, refer: https://www.facebook.com/notes/dréx-chan/punch-continuous-variable-transmission-vt2vt3-fluid-level-inspection-procedure/920849407944335
on how NOT to abuse your Punch CVT, refer: https://www.facebook.com/notes/dr%C3%A9x-chan/how-not-to-abuse-a-punch-continuously-variable-transmissions-cvt/1382385058457432/
(last update: 29 Nov 2015)
===========================================================================
INITIAL ADAPTATION (FACTORY/TECHNICIAN)
In order to compensate for the manufacturing tolerance, an initial adaptation for the clutch is required after:
PERIODICAL ADAPTATION (USER/TECHNICIAN)
The TCU keeps adapting to compensate for the wear and tear as you use the vehicle.
However, due to the rarity of using certain drive modes (i.e reverse), the TCU may not be able to adapt to every drive modes.
This may result in the 'engine die off' issue while reversing, due to poor clutch lock-up.
Users can perform the following adaptation procedure periodically to compensate for the wear and tear due to usage.
Adaptation can be performed without additional equipment.
CONDITIONS
Throughout the procedure
(last update: 27 July 2015)
UPDATED VERSION
Punch Continuous Variable Transmission (VT2/VT3) Clutch Adaptation Procedure
A] INITIAL ADAPTATION (USER/TECHNICIAN)
In order to compensate for the manufacturing tolerance, an initial adaptation for the clutch is required after:
- a reflash of TCU software, or
- a replacement of TCU, or
- a replacement of the transmission, or
- a replacement of a flatout battery
The adaptation value in the TCU can be wiped off due to long term power disruption. The CVT check light flashes once every 2 seconds if the initial adaptation is not performed. It is not recommended to drive the vehicle in such condition to avoid excessive clutch wear.
Adaptation can be performed without additional equipment.
CONDITIONS
- Vehicle being stationary
- Accelerator pedal is not applied
- Stable engine idling speed
- Stable and warmed-up CVT fluid temperature
- Foot brake is applied
PROCEDURE
1. warm up the engine and transmission
2. shift to Drive (D) position for ~ 2 minutes
3. shift to Reverse (R) position
(after a while) clutch auto disengage and the engine auto revs up and settles down
the flashing CVT check light should be turned of if this is successful*
4. shift to Drive position
5. gradually accelerate to >60km/h
6. gradually stop the vehicle
7. complete
*In the case that the CVT check light doesn't go off after this Initial Adaptation procedure is performed, send the car to the nearest SC to clear the warning.
B] PERIODICAL ADAPTATION (USER/TECHNICIAN)
TCU keeps adapting to compensate for the wear and tear as you use the vehicle. However, due to the rarity of using certain drive modes (i.e reverse), the TCU may not be able to adapt to every drive modes. This may result in the 'engine die off' issue while reversing, due to poor clutch lock-up.
Users can perform the following adaptation procedure periodically to compensate for the wear and tear.
Adaptation can be performed without additional equipment.
CONDITIONS
- Vehicle being stationary
- Accelerator pedal is not applied
- Stable engine idling speed
- Stable and warmed-up CVT fluid temperature
- Foot brake is applied
PROCEDURE
1. warm up the engine and transmission
2. shift to Neutral (N) position for ≥ 5 seconds
3. shift to Drive (D) position for ≥ 5 seconds
4. shift to Neutral (N) position for ≥ 5 seconds
5. shift to Reverse (R) position for ≥ 5 seconds
repeat step 2 to step 5 for 20 times* (apply foot brake thoughout this stage)
6. shift to Drive position
7. gradually accelerate to >60km/h
8. gradually stop the vehicle
9. complete
for CVT fluid level inspection, refer: https://www.facebook.com/notes/dréx-chan/punch-continuous-variable-transmission-vt2vt3-fluid-level-inspection-procedure/920849407944335
on how NOT to abuse your Punch CVT, refer: https://www.facebook.com/notes/dr%C3%A9x-chan/how-not-to-abuse-a-punch-continuously-variable-transmissions-cvt/1382385058457432/
(last update: 29 Nov 2015)
===========================================================================
INITIAL ADAPTATION (FACTORY/TECHNICIAN)
In order to compensate for the manufacturing tolerance, an initial adaptation for the clutch is required after:
- a reflash of TCU software
- replacement of TCU, or
- a replacement of the transmission.
PERIODICAL ADAPTATION (USER/TECHNICIAN)
The TCU keeps adapting to compensate for the wear and tear as you use the vehicle.
However, due to the rarity of using certain drive modes (i.e reverse), the TCU may not be able to adapt to every drive modes.
This may result in the 'engine die off' issue while reversing, due to poor clutch lock-up.
Users can perform the following adaptation procedure periodically to compensate for the wear and tear due to usage.
Adaptation can be performed without additional equipment.
CONDITIONS
Throughout the procedure
- Vehicle being stationary
- Accelerator pedal is not applied
- Stable engine idling speed
- Stable and warmed-up CVT fluid temperature
- Foot brake is applied
- warm up the engine and transmission
- shift to Neutral (N) position for ≥ 5 seconds
- shift to Drive (D) position for ≥ 5 seconds
- shift to Neutral (N) position for ≥ 5 seconds
- shift to Reverse (R) position for ≥ 5 seconds
- repeat step 2 to step 5 for 20 times* (apply foot brake throughout this stage)
- shift to Drive position
- gradually accelerate to >50km/h
- gradually stop the vehicle
- complete
*if only the transmission is replaced, the CVT check light wouldn't flash, hence the need to repeat the shifting 20 times to make sure that the adaptation is completed. If the CVT check light is flashing, the procedure can be stopped once the CVT check light has stopped flashing and turned off.
UPDATE #1: it has also been reported that a long period power disruption to the system may cause the TCU to loose the adaptation data, hence the need to readapt it before the vehicle is driven. This is to prevent unnecessary wear in the transmission and certain drivability issue due to poor clutch engagement especially for vehicle with high mileage.
UPDATE #2: long term power disruption may cause the CVT check light to trigger once a new battery is installed. In the case that the CVT check light doesn't go off after this manual adaptation procedure is performed, send the car to the nearest SC to clear the warning.
(last update: 27 July 2015)
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