B2CM36K1 - 406D9 4HP20 AUTOMATIC GEARBOX AL4 AUTOMATIC GEARBOX
REPAIR PROCEDURE MB3/4HP20 AUTOMATIC GEARBOX/(AL4) AUTOADAPTIVE AUTOMATIC GEARBOX
1 - FOREWORD
In order to reduce the number of parts replaced unnecessarily, gearboxes in particular, please follow the procedure below .
2 - REPAIR PROCEDURE
WARNING : photocopy the REPLACEMENT OR ASSISTANCE REQUEST form .
IMPERATIVE : do not carry out any work on the gearbox without the necessary equipment .
2 - 1 - TOOLS REQUIRED
DIAG 2000 or TEP 92 .
Ancillary repair kit(s) :
TRANSMISSION brochure in the MECHANICAL binder and/or CRA in the DIAGNOSTIC binder for the vehicle concerned .
2 - 2 - OPERATION
| stage | TEST / action / result | value | yes | no |
|---|---|---|---|---|
| 1 | action dialogue with the customer to be aware of the symptoms of malfunctioning |
- | 2 | - |
| 2 | action check that there is no external oil leak (risk of incorrect level) |
- | 3 | - |
| 3 | TEST anomaly(ies) |
- | 4 | 5 |
| 4 | result analysis of the results check faulty component(s) photocopy the REPLACEMENT OR ASSISTANCE REQUEST form |
- | - | - |
| 5 | TEST (AL4) autoadaptive automatic gearbox |
- | 6 | 7 |
| 6 | result check (A) |
- | - | - |
| 7 | action check oil level and condition |
- | 8 | - |
| 8 | TEST anomaly(ies) |
- | 9 | 10 |
| 9 | result analysis of the results check faulty component(s) fill in and return the REPLACEMENT OR ASSISTANCE REQUEST form |
- | - | - |
| 10 | action read the fault codes global test |
- | 11 | - |
| 11 | TEST dialogue possible |
- | 13 | 12 |
| 12 | result fill in and return the REPLACEMENT OR ASSISTANCE REQUEST form |
- | - | - |
| 13 | TEST presence of faults |
- | 14 | 15 |
| 14 | result analysis of the results check faulty component(s) fill in and return the REPLACEMENT OR ASSISTANCE REQUEST form |
- | - | - |
| 15 | result check (B) |
- | - | - |
| check (A) | ||||
|---|---|---|---|---|
| stage | TEST / action / result | value | yes | no |
| 1 | action check (A) |
- | 2 | - |
| 2 | action read the fault codes |
- | 3 | - |
| 3 | TEST dialogue possible |
- | 5 | 4 |
| 4 | result fill in and return the REPLACEMENT OR ASSISTANCE REQUEST form |
- | - | - |
| 5 | TEST presence of faults global test |
- | 6 | 7 |
| 6 | result check (B) |
- | - | - |
| 7 | TEST oil change required (parameter measurements) |
- | 8 | 9 |
| 8 | result carry out the oil change and update the oil wear counter |
- | - | - |
| 9 | result check (B) |
- | - | - |
| check (B) | ||||
|---|---|---|---|---|
| stage | TEST / action / result | value | yes | no |
| 1 | action check (B) |
- | 2 | - |
| 2 | TEST 4HP20 automatic gearbox |
- | 4 | 3 |
| 3 | action carry out pedal learning |
- | 4 | - |
| 4 | action carry out a road test with the diagnostic equipment (parameter measurements) |
- | 5 | - |
| 5 | TEST incorrect value(s) |
- | 6 | 7 |
| 6 | result analysis of the results check faulty component(s) fill in and return the REPLACEMENT OR ASSISTANCE REQUEST form |
- | - | - |
| 7 | TEST check correct |
- | - | - |
Following analysis and if necessary repair, send the REPLACEMENT OR ASSISTANCE REQUEST form duly completed to the relevant technical helpline :
NOTE : for the Export network, contact your usual technical helpline .
In the case of replacement of the gearbox, attach to it the REPLACEMENT OR ASSISTANCE REQUEST form attached to this document .
2 - 3 - TIME ALLOTTED FOR OPERATION
Vehicle off road : If there is no reply from the helpline within 24 hours, replacement of the necessary parts is authorised .
Vehicle not off road : Time limit extended to 72 hours .