When Monitored

Ignition key is ON or the TCM control unit is in power-on state, the engine is not in cranking mode and no gearshifts are in progress.

The fluid temperature is greater than a minimum threshold, there are no leakage faults in the circuit, there is not a pump excessive shifting fault, hydraulic pressure sensor diagnostic has not failed and the fluid temperature is correctly computed (this means that CAN information for temperature computation are available).

A defined amount of time is elapsed from time of first pump activation OR the hydraulic pressure had already become greater than minimum gear shift acceptance threshold after power-on.

The first pump activation is already achieved OR the "Accumulator Discharge" fault is not set, the electro pump is on and is not in a failure state.

Battery power supply must be greater than a threshold and its diagnostic has not failed.