Diagnostic fault clearing system

• US 7,689,333 B2
• Filed: 09/02/2005
• Issued: 03/30/2010
• Est. Priority Date: 09/02/2005
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Baltes, Kevin M., Bauerle, Paul A., Stempnik, Joseph M., Van Diepen, Ronald W.
• Primary Examiner(s): Beaulieu; Yonel
• Application Number:
  US11/219,042
• Publication Number:
  US 20070055421A1
• Time in Patent Office: 1,670 Days
• Field of Search: 701/29, 701 33- 34, 701/36, 702182-183, 714/100, 714/25, 340/438
• US Class Current: 701/29
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005

Abstract

A vehicle diagnostics clearing system that detects a clear diagnostic faults flag and clears diagnostic faults from a control module includes a clear diagnostic faults flag monitoring module and a clear diagnostic faults module. The clear diagnostic faults flag monitoring module periodically monitors the clear diagnostic faults flag in the control module. When the clear diagnostic faults flag monitoring module detects that the clear diagnostic faults flag is set, the clear diagnostic faults module clears the diagnostic faults from the control module for a predetermined period.

Claims

1. A vehicle diagnostics clearing system, comprising:

a clear diagnostic faults flag monitoring module that periodically monitors a clear diagnostic faults flag in a control module; and

a clear diagnostic faults module that automatically clears diagnostic faults from the control module for a predetermined period after the clear diagnostic faults flag is set in the control module.

2. The vehicle diagnostics clearing system of claim 1 further comprising:

a timer that increments when said clear diagnostic faults flag monitoring module determines that the clear diagnostic faults flag has been set in the control module; and

a comparing module that determines if said timer is less than said predetermined period.

3. The vehicle diagnostics clearing system of claim 2 wherein said clear diagnostics faults module clears the diagnostic faults from the control module when said timer is less than said predetermined period.

7. The vehicle diagnostic clearing system of claim 2 wherein said timer is reset when the clear diagnostic faults flag is not set.

8. The vehicle diagnostic clearing system of claim 2 wherein said clear diagnostic faults module clears the diagnostic faults until said timer is greater than or equal to said predetermined period.

4. A vehicle diagnostics clearing method, comprising:

periodically determining if a clear diagnostics faults flag has been set; and

automatically clearing diagnostic faults for a predetermined period after the clear diagnostic faults flag has been set.

5. The vehicle diagnostics clearing method of claim 4 further comprising:

incrementing a timer when the clear diagnostic faults flag has been set; and

determining if said timer is less than said predetermined period.

6. The vehicle diagnostics clearing method of claim 5 wherein the diagnostic faults are cleared when said timer is less than said predetermined period.

9. The vehicle diagnostic clearing method of claim 6 further comprising resetting said timer when the clear diagnostic faults flag is not set.

10. The vehicle diagnostic clearing method of claim 6 further comprising clearing the diagnostic faults from the control module until the timer is greater than or equal to said predetermined period.

11. A method comprising:

determining if a clear faults flag is set in an engine control module of a vehicle;

repeatedly clearing diagnostic faults of the engine control module for a predetermined period after the clear faults flag has been set; and

stopping the clearing diagnostic faults after the predetermined period has elapsed.

12. The method of claim 11 further comprising periodically incrementing a timer while the clear faults flag is set.

13. The method of claim 12 further comprising clearing the diagnostic faults when both the clear faults flag is set and the timer is less than the predetermined period.

14. The method of claim 13 further comprising resetting the timer when the clear faults flag is not set.