Trouble Diagnosis: Fail-Safe: Notes
WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is a malfunction in a main electronic control input/output signal circuit.
In fail-safe mode, a driving condition is selected according to the malfunctioning location, and line pressure is set at the maximum. For this reason, the customer will be subjected to uncomfortable "slipping" or "poor acceleration" of the vehicle.
In that case, handle according to the "diagnostics flow" (Refer to WORK FLOW ).