JPS6436947A - Electronic control device for internal combustion engine - Google Patents
Electronic control device for internal combustion engineInfo
- Publication number
- JPS6436947A JPS6436947A JP19395987A JP19395987A JPS6436947A JP S6436947 A JPS6436947 A JP S6436947A JP 19395987 A JP19395987 A JP 19395987A JP 19395987 A JP19395987 A JP 19395987A JP S6436947 A JPS6436947 A JP S6436947A
- Authority
- JP
- Japan
- Prior art keywords
- ram
- diagnosis
- code
- erasing
- tester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
PURPOSE:To initialize or erase only the RAM memory data of an electronic control device for an internal combustion engine without erasing the memory data of other electronic devices by providing a failure diagnosing tester which can be used by connecting to a control circuit. CONSTITUTION:A code for required diagnosis-object equipment or for initializing a RAM from a tester 27 is received by a control circuit 25. Then, the control circuit 25 judges which code it has received and, at the time of the diagnosis- object equipment code, the result of diagnosis of the diagnosis-object equipment is outputted to the tester 27 while, at the time of the RAM initializing code, the initialization or erasing of the RAM is executed in accordance with the control program of a ROM. Thereby, the initialization of the RAM can be carried out without need for cutting off a feeding voltage from a storage battery, thereby, without erasing the memory data in other electronic equipment loaded on a vehicle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193959A JP2634598B2 (en) | 1987-08-03 | 1987-08-03 | Electronic control unit for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193959A JP2634598B2 (en) | 1987-08-03 | 1987-08-03 | Electronic control unit for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6436947A true JPS6436947A (en) | 1989-02-07 |
JP2634598B2 JP2634598B2 (en) | 1997-07-30 |
Family
ID=16316606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62193959A Expired - Lifetime JP2634598B2 (en) | 1987-08-03 | 1987-08-03 | Electronic control unit for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2634598B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09317548A (en) * | 1996-05-23 | 1997-12-09 | Daihatsu Motor Co Ltd | Reference position learning method for throttle valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57212349A (en) * | 1981-06-25 | 1982-12-27 | Nissan Motor Co Ltd | Data storage system for electronic control system for motorcar |
-
1987
- 1987-08-03 JP JP62193959A patent/JP2634598B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57212349A (en) * | 1981-06-25 | 1982-12-27 | Nissan Motor Co Ltd | Data storage system for electronic control system for motorcar |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09317548A (en) * | 1996-05-23 | 1997-12-09 | Daihatsu Motor Co Ltd | Reference position learning method for throttle valve |
Also Published As
Publication number | Publication date |
---|---|
JP2634598B2 (en) | 1997-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 11 Free format text: PAYMENT UNTIL: 20080425 |