Patent ID: 9074949
Filing Date: 2015-07-07
Classification: G01K

Abstract:
1. A diagnostic device for a temperature sensor provided in a power transfer device that transfers drive power generated by a drive power source in a vehicle, the diagnostic device for the temperature sensor comprising: a warm-up state determining unit to determine whether or not the drive power source is in a predetermined warm-up completion state; and a low temperature offset malfunction determining unit to determine a low temperature offset malfunction in the temperature sensor when the warm-up state determining unit determines that the warm-up completion state is established, and a detected value from the temperature sensor is lower than a predetermined low temperature threshold, wherein the warm-up state determining unit determines the warm-up completion state according to an estimated heat amount from the drive power source based on at least one of an output from the drive power source, an acceleration resistance, an air resistance, a rolling resistance, and a wind-chill heat amount.