Slipping Clutch
Discussion
Sorry Rick. Just one more information. I found on Aston Martin Tech Info the service bulletin SB: 0193. It is about the adaptive learning procedures. There are 2 procedures to follow in order to allow the TCU to learn the flywheel profile.
Procedure A - Loss of Data in the Engine Control Module caused by Power Disconnection or
Module Replacement (Manual and Auto Transmissions)
Enable the Powertrain Control Module to relearn the flywheel profile data as follows:
• Fully warm-up the vehicle (Engine Coolant Temperature above 85°C and Transmission Fluid
Temperature above 50°C)
• Switch Of the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
• Drive the vehicle and increase speed to a constant 70 mph (110 kph)
• Close the throttle fully and allow the vehicle to ‘coast down’ to 35 mph (56 kph) with no
braking intervention (ensure road is safe to do so)
Note:-The coast down from 70 to 35 needs to be done in Normal mode (not Sport or Touch) on
the (Auto) and in 6th gear on the Manual.
• Upon reaching 35 mph (56 kph), accelerate up to a constant 70 mph (110 kph)
• Repeat the accelerate to 70 mph (110 kph) then ‘coast down’ to 35 mph (56 kph), a total of
three times
• The engine controller will then have learned the flywheel profile
Note:
Completion of flywheel learning may be checked using WDS. Monitor the PID ‘Profile correction
learned during this trip’. When this PID switches to 1, flywheel learning is complete.
Note: Other engine adaptive data will be learned during further running of the vehicle.
Procedure B - Loss of Data in only the Transmission Controller (Auto transmission only)
Enable the Transmission Control Module to relearn the gearshift adaptive data as follows:
1. Fully warm-up the vehicle (Engine Coolant above 85°C and Transmission Fluid Temp above
50°C)
2. Switch off the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
3. Confirm that the transmission is in Normal Mode (Not Sport or Touchtronic)
4. Accelerate from rest with light throttle opening and obtain gearshifts 1-2, 2-3 and 3-4 with the
engine speed in the range 1500 – 1800 rpm
5. Continue to accelerate gently to 50 mph (80 kph) so the transmission shifts into 5th gear
6. Gently brake the vehicle to a standstill and hold the vehicle at rest with the footbrake for 15
seconds (ensure road is safe to do so).
7. Repeat steps 3 – 5 a further 4 times. The Transmission Control Module will then have learned
an initial level of gearshift adaptive data
Learning of transmission adaptive data is never fully completed, as the Transmission Controller
continually adapts to varying parameters.
Do you think it will help with my slipping clutch? I have to perform it in Comfort mode or sport mode since my car hasn't normal mode? Thank you very much!
Procedure A - Loss of Data in the Engine Control Module caused by Power Disconnection or
Module Replacement (Manual and Auto Transmissions)
Enable the Powertrain Control Module to relearn the flywheel profile data as follows:
• Fully warm-up the vehicle (Engine Coolant Temperature above 85°C and Transmission Fluid
Temperature above 50°C)
• Switch Of the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
• Drive the vehicle and increase speed to a constant 70 mph (110 kph)
• Close the throttle fully and allow the vehicle to ‘coast down’ to 35 mph (56 kph) with no
braking intervention (ensure road is safe to do so)
Note:-The coast down from 70 to 35 needs to be done in Normal mode (not Sport or Touch) on
the (Auto) and in 6th gear on the Manual.
• Upon reaching 35 mph (56 kph), accelerate up to a constant 70 mph (110 kph)
• Repeat the accelerate to 70 mph (110 kph) then ‘coast down’ to 35 mph (56 kph), a total of
three times
• The engine controller will then have learned the flywheel profile
Note:
Completion of flywheel learning may be checked using WDS. Monitor the PID ‘Profile correction
learned during this trip’. When this PID switches to 1, flywheel learning is complete.
Note: Other engine adaptive data will be learned during further running of the vehicle.
Procedure B - Loss of Data in only the Transmission Controller (Auto transmission only)
Enable the Transmission Control Module to relearn the gearshift adaptive data as follows:
1. Fully warm-up the vehicle (Engine Coolant above 85°C and Transmission Fluid Temp above
50°C)
2. Switch off the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
3. Confirm that the transmission is in Normal Mode (Not Sport or Touchtronic)
4. Accelerate from rest with light throttle opening and obtain gearshifts 1-2, 2-3 and 3-4 with the
engine speed in the range 1500 – 1800 rpm
5. Continue to accelerate gently to 50 mph (80 kph) so the transmission shifts into 5th gear
6. Gently brake the vehicle to a standstill and hold the vehicle at rest with the footbrake for 15
seconds (ensure road is safe to do so).
7. Repeat steps 3 – 5 a further 4 times. The Transmission Control Module will then have learned
an initial level of gearshift adaptive data
Learning of transmission adaptive data is never fully completed, as the Transmission Controller
continually adapts to varying parameters.
Do you think it will help with my slipping clutch? I have to perform it in Comfort mode or sport mode since my car hasn't normal mode? Thank you very much!
Edited by podon on Thursday 20th May 17:34
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