Vehicular electronic control apparatus

• US 9,460,569 B2
• Filed: 03/26/2015
• Issued: 10/04/2016
• Est. Priority Date: 04/14/2014
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Fukuda, Kazutaka, Fukuta, Kenji
• Primary Examiner(s): Beaulieu, Yonel
• Application Number:
  US14/669,053
• Publication Number:
  US 20150294512A1
• Time in Patent Office: 558 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 12/0246 in block erasable memory, e.g. flash memory
• CPC Class Codes: G06F 2212/7202 Allocation control and policies
• CPC Class Codes: G07C 5/0841 Registering performance data recording measured values G01D; information storage G11B

Abstract

A vehicular electronic control apparatus includes a non-volatile memory, a storing portion, and a determination unit. The non-volatile memory is capable of storing a permanent diagnostic trouble code of a vehicle. The storing portion stores a real-time destination value indicating a currently set destination of the vehicle. The determination unit determines, based on the real-time destination value stored in the storing portion, whether the permanent diagnostic trouble code is a target permanent diagnostic trouble code to be stored in the non-volatile memory.

Claims

1. A vehicular electronic control apparatus comprising:

a non-volatile memory being capable of storing a permanent diagnostic trouble code of a vehicle;

a storing portion storing a real-time destination value indicating a currently set destination of the vehicle; and

a determination unit determining, based on the real-time destination value stored in the storing portion, whether the permanent diagnostic trouble code is a target permanent diagnostic trouble code to be stored in the non-volatile memory.

2. The vehicular electronic control apparatus according to claim 1, wherein

the determination unit includes a storing control section,

when the determination unit determines that the real-time destination value stored in the storing portion is equal to a default value that indicates a manufacturing plant of the vehicle, the determination unit determines that the permanent diagnostic trouble code is not the target permanent diagnostic trouble code to be stored in the non-volatile memory, and

when the determination unit determines that the permanent diagnostic trouble code is not the target permanent diagnostic trouble code, the storing control section forbids the non-volatile memory from storing the permanent diagnostic trouble code.

3. The vehicular electronic control apparatus according to claim 1, wherein

the storing portion storing the real-time destination value is defined as a first storing portion,

the non-volatile memory includes a second storing portion storing the permanent diagnostic trouble code when the permanent diagnostic trouble code is determined as the target permanent diagnostic trouble code to be stored in the non-volatile memory,

the second storing portion further acquires the real-time destination value from the first storing portion at a storing time of the permanent diagnostic trouble code, and stores the real-time destination value, as a history destination value, correlated with the permanent diagnostic trouble code,

the determination unit includes an output control section,

when the determination unit determines that the history destination value stored in the second storing portion is not equal to a new real-time destination value stored in the first storing portion, the determination unit determines that the permanent diagnostic trouble code corresponding to the history destination value is not the target permanent diagnostic trouble code, and

when the determination unit determines that the permanent diagnostic trouble code corresponding to the history destination value is not the target permanent diagnostic trouble code, the output control section forbids an output of the permanent diagnostic trouble code corresponding to the history destination value.

4. The vehicular electronic control apparatus according to claim 3, further comprising

an overwriting section overwriting the history destination value and the permanent diagnostic trouble code corresponding to the history destination value with a new destination value and a corresponding permanent diagnostic trouble code when the history destination value is not equal to the new real-time destination value.