JPS6436947A - Electronic control device for internal combustion engine - Google Patents

Electronic control device for internal combustion engine

Info

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
Application number
JP19395987A
Other languages
Japanese (ja)
Other versions
JP2634598B2 (en
Inventor
Kosaku Uota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62193959A priority Critical patent/JP2634598B2/en
Publication of JPS6436947A publication Critical patent/JPS6436947A/en
Application granted granted Critical
Publication of JP2634598B2 publication Critical patent/JP2634598B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62193959A 1987-08-03 1987-08-03 Electronic control unit for internal combustion engine Expired - Lifetime JP2634598B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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