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Patent Searching and Data


Title:
SELF-DIAGNOSTIC DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JPH05322031
Kind Code:
A
Abstract:

PURPOSE: To identify a failing part when the operation position of a speed change operation part does not match the speed change position of the auto matic gear shifter.

CONSTITUTION: When the driver operates a speed change operation part 1, a control device 2 mointors the operation position of a speed change operation part 1 and the speed change position of an automatic transmission 3. If the two positions do not match, a motor 5 is driven for the speed change positions other than the one which has caused the mismatch. Whether the failing part is a wire cable 5, the motor 6, a rotation position sensor 10, or a select lever position sensor 11 is determined based on the motor rotation position and the shift lever movement position which have been detected. If an emergency repair is possible, the number of steps of a motor table is modified to allow the vehicle to travel, and an alarm device 14 notifies the driver that repairs must be made as early as possible. If an emergency repair is not possible, the alarm device 14 notifies the driver that the vehicle must be stopped to obtain a support from a repair shop.


Inventors:
Sato, Haruhiko
Hanai, Toshimichi
Application Number:
JP1992000125192
Publication Date:
December 07, 1993
Filing Date:
May 19, 1992
Export Citation:
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Assignee:
NISSAN MOTOR CO LTD
International Classes:
B60K20/02; F16H61/12; F16H63/40; F16H63/42; (IPC1-7): F16H61/12; F16H63/40
Attorney, Agent or Firm:
志賀 富士弥 (外3名)