VEHICLE DRIVE FORCE CONTROL DEVICE

摘要

A powertrain manager executes a program including: a step (S100) for reading out a transmission control instruction gear ratio kgear (1); a step (S200) for calculating an actual gear ratio kgear (2); a step (S400) for judging that an automatic transmission has failed at the lower gear stage side if kgear (1) < {kgear (2)/a} or kgear (1) < {kgear (2) - ß} (YES in S300); and a step (S500) for substituting kgear (1) or kgear (2) which is greater into the gear ratio for calculation.