Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Drive force distribution control apparatus
A drive force distribution control apparatus in which if a relay output voltage (Vah) detected by relay-output-voltage detecting means (30) is lower than a first threshold, the relay is repeatedly and successively turned on and off multiple times, and then if the relay output voltage (Vah) detected later by the relay-output-voltage detecting means (30) while an engine speed (Er) is higher than a second threshold and an ignition switch (IG) is on is still lower than the first threshold, it is determined that there is an abnormality that keeps the relay stuck open, and then control for switching the drive mode from a four-wheel-drive mode to a two-wheel-drive mode is executed.
Jtekt Corporation
B B H B
B60W B60W H02P B60W
inventional inventional inventional additional
Kiyoshige
Kato