ON-BOARD DIAGNOSTIC SYSTEM DIAGNOSTIC DATA MEMORY FUNCTION [L8, LF]

id0102b1141700

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 [L8, LF].)
• 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
  ― On-board monitoring test results

• Another method for erasing diagnostic data is by using the memory clearing function of the external tester.