The friction material inside the coupling will degrade over time. Therefore, corresponding compensation values must be referenced and entered after replacing the controller or the coupling.
Simultaneous replacement of 4WD ECU (Controller) and coupling
Does not require compensation.
Replacement of coupling only
Reset the 4WD ECU's (Controller) clutch learning.
Replacement of 4WD ECU (Controller) only
Before replacement: Check the ECU's clutch learning.
After replacement: Enter the original ECU's clutch learning into the replacement ECU.