CONTROL SYSTEM AND METHOD FOR FILTERING DEPENDENT DIAGNOSTIC TROUBLE CODES

• US 20090271062A1
• Filed: 10/14/2008
• Published: 10/29/2009
• Est. Priority Date: 04/25/2008
• 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: Grenn, Daniel P.
• Granted Patent: US 8,055,400 B2
• Time in Patent Office: Days
• US Class Current: 701/33
• CPC Class Codes: G05B 23/0272 Presentation of monitored results, e.g. selection of status reports to be displayed; Filtering information to the user
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005

Abstract

A control system includes an input that one of receives and transmits diagnostic data including a fault identifier and a fault status of the fault identifier, and a filter module that filters said diagnostic data based on a comparison of the diagnostic data and a data array, wherein the data array includes a dependent identifier and a corresponding root cause identifier. The control system may be included with one or more of a vehicle control module and a service tool. A related method is also provided.

Claims

1. A control system comprising:

an input that one of receives and transmits diagnostic data including a fault identifier and a fault status of said fault identifier; and

a filter module that filters said diagnostic data based on a comparison of said diagnostic data and a data array, wherein said data array includes a dependent identifier and a corresponding root cause identifier.

2. The control system of claim 1 wherein said filter module filters said diagnostic data when communicating with a service tool.

3. The control system of claim 2 wherein said filter module filters said diagnostic data based on a service mode of said service tool.

4. The control system of claim 1 wherein:

said diagnostic data includes a first fault identifier and a first fault status of said first fault identifier, and a second fault identifier and a second fault status of said second fault identifier,

each said first and second fault statuses includes a failed since code clear status, a confirmed status, and an indicator lamp request status, and

said filter module filters said first fault identifier when said first fault identifier is equal to said dependent identifier and a logical expression ((X AND Y) AND (S OR ˜

T)) is TRUE, wherein

X is TRUE when said second fault identifier is equal to said root cause identifier and said confirmed status of said second fault identifier is TRUE,

Y is TRUE when said failed since code clear status of said first fault identifier is TRUE,

S is TRUE when said Indicator lamp request status of said second fault identifier is TRUE, and

˜

T is TRUE when said Indicator lamp request status of said first fault identifier is not TRUE.

5. The control system of claim 1 wherein:

said diagnostic data includes a first fault identifier and a first fault status of said first fault identifier, and a second fault identifier and a second fault status of said second fault identifier,

each said first and second fault statuses includes a failed since code clear status, a confirmed status, and an indicator lamp request status, and

said filter module filters said first fault identifier when said first fault identifier is equal to said dependent identifier and a logical expression ((W AND Y AND ˜

Z) AND (S OR ˜

T)) is TRUE, wherein

W is TRUE when said second fault identifier is equal to said root cause identifier and said failed since code clear status of said second fault identifier is TRUE,

Y is TRUE when said failed since code clear status of said first fault identifier is TRUE,

˜

Z is TRUE when said confirmed status of said first fault identifier is not TRUE,

S is TRUE when said Indicator lamp request status of said second fault identifier is TRUE, and

˜

T is TRUE when said Indicator lamp request status of said first fault identifier is not TRUE.

6. A vehicle control module comprising the control system of claim 1.

7. A service tool comprising the control system of claim 1.

8. A method comprising:

receiving diagnostic data including a fault identifier and a fault status of said fault identifier; and

filtering said diagnostic data based on a comparison of said diagnostic data and a data array, wherein said data array includes a dependent identifier and a corresponding root cause identifier.

9. The method of claim 8 wherein said filtering said diagnostic data includes filtering said diagnostic data when communicating with a service tool.

10. The method of claim 9 wherein said filtering said diagnostic data includes filtering said diagnostic data based on a service mode of said service tool.

11. The method of claim 8 wherein:

said diagnostic data includes a first fault identifier and a first fault status of said first fault identifier, and a second fault identifier and a second fault status of said second fault identifier,

each said first and second fault statuses includes a failed since code clear status, a confirmed status, and an indicator lamp request status, and

said filtering said diagnostic data includes filtering said first fault identifier when said first fault identifier is equal to said dependent identifier and a logical expression ((X AND Y) AND (S OR ˜

T)) is TRUE, wherein

X is TRUE when said second fault identifier is equal to said root cause identifier and said confirmed status of said second fault identifier is TRUE,

Y is TRUE when said failed since code clear status of said first fault identifier is TRUE, and

S is TRUE when said Indicator lamp request status of said second fault identifier is TRUE, and

˜

T is TRUE when said Indicator lamp request status of said first fault identifier is not TRUE.

12. The method of claim 8 wherein:

said diagnostic data includes a first fault identifier and a first fault status of said first fault identifier, and a second fault identifier and a second fault status of said second fault identifier,

each said first and second fault statuses includes a failed since code clear status, a confirmed status, and an indicator lamp request status, and

said filtering said diagnostic data includes filtering said first fault identifier when said first fault identifier is equal to said dependent identifier and a logical expression ((W AND Y AND ˜

Z) AND (S OR ˜

T)) is TRUE, wherein

W is TRUE when said second fault identifier is equal to said root cause identifier and said failed since code clear status of said second fault identifier is TRUE,

Y is TRUE when said failed since code clear status of said first fault identifier is TRUE,

˜

Z is TRUE when said confirmed status of said first fault identifier is not TRUE,

S is TRUE when said Indicator lamp request status of said second fault identifier is TRUE, and

˜

T is TRUE when said Indicator lamp request status of said first fault identifier is not TRUE.