B2CA0LK1 - 406D9 AL4 AUTOMATIC GEARBOX
FUNCTION : OIL WEAR COUNTER (AL4) AUTOADAPTIVE AUTOMATIC GEARBOX
1 - PRINCIPLES OF OPERATION
The (AL4) autoadaptive automatic gearbox ECU is fitted with an oil wear counter .
The counter starts as soon as the ECU receives an ignition positive supply .
For a given time interval, the counter increases by a certain number of units (of wear) depending on the temperature of the gearbox .
The counter has 32958 units (of wear) which correspond to 6000 hours of operation at an oil temperature below 95°C .
When the counter is exhausted, the gearbox ECU informs the driver of the presence of a fault by the flashing of the Sport and Snow indicator lights on the instrument panel .
Using the diagnostic equipment, in parameter measurement mode, the operator checks whether the gearbox oil needs changing .
Using the diagnostic equipment, the operator can also change the value of the oil wear counter (If necessary) .
2 - WHEN SHOULD THE VALUE OF THE OIL WEAR COUNTER BE CHANGED?
On replacement of :
When 0.5 litre(s) of new oil are added to the gearbox .
3 - TO WHAT VALUE SHOULD THE OIL WEAR COUNTER VALUE BE CHANGED?
3 - 1 - REPLACEMENT OF THE AUTOMATIC GEARBOX
Reset the counter to zero .
3 - 2 - CONTROL UNIT REPLACEMENT (AUTOMATIC GEARBOX)
Note the value of the counter on the old ECU and transfer it to the new one .
3 - 3 - ADDITION OF NEW OIL TO THE GEARBOX
For each addition of 0.5 litre(s) of new oil to the gearbox, reduce the counter value by 2750 units .
4 - HOW IS THE OIL WEAR COUNTER VALUE CHANGED?
4 - 1 - SPECIAL TOOLS
[1] DIAG 2000 .
4 - 2 - DIAG 2000 ACTIA
Select: Oil wear counter (In the Main Menu) .
The reading and entering are carried out on the same screen .
NOTE : the Oil Change to be Carried Out: YES/NO information is also present .
Calculate the new value to be entered into the counter .
Enter the new value using the numerical keypad .