ON-BOARD DIAGNOSTIC SYSTEM DIAGNOSTIC DATA MEMORY FUNCTION [L5]SM1934256
ON-BOARD DIAGNOSTIC SYSTEM DIAGNOSTIC DATA MEMORY FUNCTION [L5]

id0102c9141700


Outline

• Records diagnostic data related to the engine control system in the PCM.

Function

• The diagnostic data recording/erasing conditions are determined by the number of drive cycles set for each item. (See ON-BOARD DIAGNOSTIC SYSTEM TEST MODE [L5].)
• Diagnostic data which can be recorded in the PCM are as follows:
― Number of DTCs
― Pending DTCs
― Freeze frame data
― On-board diagnostic system diagnosis condition
― DTC
• Another method for erasing diagnostic data is by using the memory clearing function of the external tester.