Transmission adaptation of electronic transmission control (ETC) - AD27.19-P-3000-04A
Transmission adaptation (ETC adaptation)
Definition
Transmission adaptation represents an automatic adaptation of data for the purpose of optimizing the ease of shifting.
In order to compensate for tolerances or wear, adaptation is automatically conducted for:
- response time
- charge time
- charging pressure
- control of torque converter lockup clutch
The data for this automatic adaptation are displayed on the HHT under menu item 07 (adaptation data) and can be reset.
After that the electronic control has to be matched to the transmission via an adaptation process.
General
Two methods are available for conducting the adaptation process:
- As part of a test drive (a second person is required here to observe the data displayed on the HHT).
- On an output dynamometer.
Engine speed limit:
When conducting the adaptation process care should be taken to ensure that the specified engine speed is not exceeded, as in this case no adaptation of the transmission will take place.
Torque values, refer to table.
Conducting the adaptation process
When conducting the adaptation process care should be taken to ensure that the torque values as given in the following table are adhered to.
- After exchanging the transmission or repairing it the following listed gearchanges should undergo an adaptation after the values have been reset:
Drive upshifts
- 4 X the 1 → 2 gearchange
- 4 X the 2 → 3 gearchange
(Torque values, refer to the table given below)
Additional notes on procedure to follow for a necessary transmission exchange:
Print out all adaptation data displayed on the HHT and enclose with the faulty transmission.
- For shift-quality complaints the following listed gearchanges should undergo a new adaptation:
Drive upshifts
- 4 X the 1 → 2 gearchange
- 4 X the 2 → 3 gearchange
- 4 X the 3 → 4 gearchange
- 4 X the 4 → 5 gearchange
(Torque values, refer to the table given below)
Coasting gearchange in form of deceleration downshift
- 4 X the 5 → 4 gearchange
- 4 X the 4 → 3 gearchange
(Torque values are not necessary for these gearchanges.)
After completing the adaptation process the engine should be allowed to run for approximately 10 minutes. This is necessary in order to ensure that all the data displayed by the HHT is actually sent to the memory in the ETC control module (N15/3).
If this is not the case, or if only some of the data is sent to the memory in the ETC control module N15/3, the transmission must be assessed again after a subsequent test drive.
| Number | Designation | Engine 104 | Engines 111.920/ 921/941/ 942 | Engines 111.945/ 946/952 | Engines 111.944/ 947 | ||
|---|---|---|---|---|---|---|---|
| BE27.19-P-1001-01A | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 | 4 | 4 | 4 |
| 1 → 2 | Nm | 14...37 | 14...28 | 14...28 | 14...37 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | 4 | 4 | 4 | ||
| 2 → 3 | Nm | 17...59 | 17...46 | 17...46 | 17...59 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | 3 | 3 | 3 | ||
| 3 → 4 | Nm | 17...46 | 17...46 | 17...46 | 17...46 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | 3 | 3 | 3 | ||
| 4 → 5 | Nm | 0...121 | 0...82 | 0...82 | 0...121 | ||
| Max. engine speed | rpm | 2400 | 2700 | 2700 | 2400 | ||
| Number | Designation | Engines 111.951/ 955/956/ 957 | Engine 111.958 | Engines 111.970/ 974/977 | Engines 111.973/ 975/982/ 983 | ||
|---|---|---|---|---|---|---|---|
| BE27.19-P-1001-01A | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 | 4 | 4 | 4 |
| 1 → 2 | Nm | 14...37 | 14...37 | 14...28 | 14...37 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | 4 | 4 | 4 | ||
| 2 → 3 | Nm | 17...59 | 17...59 | 17...59 | 17...59 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | 3 | 3 | 3 | ||
| 3 → 4 | Nm | 17...46 | 17...46 | 17...46 | 17...46 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | 3 | 3 | 3 | ||
| 4 → 5 | Nm | 0...121 | 0...121 | 0...82 | 0...121 | ||
| Max. engine speed | rpm | 2400 | 2400 | 2400 | 2400 | ||
| Number | Designation | Engine 112 | Engine 113.940/ 942/943 without touch shift | Engine 113.940/ 942/943 with touch shift | ||
|---|---|---|---|---|---|---|
| BE27.19-P-1001-01A | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 | 4 | 4 |
| 1 → 2 | Nm | 14...37 | 13...40 | 10...45 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | 4 | 4 | ||
| 2 → 3 | Nm | 17...59 | 22...50 | 22...50 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | 3 | 3 | ||
| 3 → 4 | Nm | 17...46 | 22...70 | 22...65 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | 3 | 3 | ||
| 4 → 5 | Nm | 0...121 | 0...1210 | 22...90 | ||
| Max. engine speed | rpm | 2400 | 1800 | 1800 | ||
| Number | Designation | Engine 113.361 | Engines 119.980/ 982 | Engines 119.981/ 985 | Engine 120 | ||
|---|---|---|---|---|---|---|---|
| BE27.19-P-1001-01A | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 | 4 | 4 | 4 |
| 1 → 2 | Nm | 17...50 | 17...50 | 13...40 | 17...50 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | 4 | 4 | 4 | ||
| 2 → 3 | Nm | 29...60 | 29...60 | 25...50 | 29...60 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | 3 | 3 | 3 | ||
| 3 → 4 | Nm | 29...80 | 29...80 | 22...70 | 29...80 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | 3 | 3 | 3 | ||
| 4 → 5 | Nm | 0...140 | 0...140 | 0...140 | 0...140 | ||
| Max. engine speed | rpm | 1800 | 1800 | 1800 | 1800 | ||
| Number | Designation | Engine 602.982 | Engines 604.910 912/915 917 | Engines 605.910/ 912 | Engine 605.960/ 962 | ||
|---|---|---|---|---|---|---|---|
| BE27.19-P-1001-01B | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 | 4 | 4 | 4 |
| 1 → 2 | Nm | 14...37 | 14...28 | 14...28 | 14...37 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | 4 | 4 | 4 | ||
| 2 → 3 | Nm | 20...59 | 20...45 | 20...45 | 20...59 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | 3 | 3 | 3 | ||
| 3 → 4 | Nm | 20...59 | 15...30 | 15...30 | 20...59 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | 3 | 3 | 3 | ||
| 4 → 5 | Nm | 0...121 | 0...81 | 0...81 | 0...121 | ||
| Max. engine speed | rpm | 1800 | 1800 | 1800 | 1800 | ||
| Number | Designation | Engine 606.912 | Engines 606.961/962, 611.960/961/962 | Engines 612.961/ 962/963 | ||
|---|---|---|---|---|---|---|
| BE27.19-P-1001-01B | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 | 4 | 4 |
| 1 → 2 | Nm | 14...28 | 14...37 | 13...40 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | 4 | 4 | ||
| 2 → 3 | Nm | 20...5925 | 20...59 | 25...50 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | 3 | 3 | ||
| 3 → 4 | Nm | 15...54 | 20...59 | 22...70 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | 3 | 3 | ||
| 4 → 5 | Nm | 0...81 | 0...121 | 0...1210 | ||
| Max. engine speed | rpm | 1800 | 1800 | 1800 | ||
| Number | Designation | Engine 613.961 | ||
|---|---|---|---|---|
| BE27.19-P-1001-01B | Drive upshift | Number of repeated gearshifts | at 1 → 2 | 4 |
| 1 → 2 | Nm | 23...50 | ||
| Number of repeated gearshifts | at 2 → 3 | 4 | ||
| 2 → 3 | Nm | 26...60 | ||
| Number of repeated gearshifts | at 3 → 4 | 3 | ||
| 3 → 4 | Nm | 20...70 | ||
| Number of repeated gearshifts | at 4 → 5 | 3 | ||
| 4 → 5 | Nm | 28...90 | ||
| Max. engine speed | rpm | 1800 | ||