ON-BOARD DIAGNOSTIC SYSTEM EXTERNAL DIAGNOSTIC UNIT COMMUNICATION FUNCTION [L8, LF]
id0102b1141800
Outline
• Function for allowing both the PCM and external tester to receive and send data.
• The DLC-2 has been adopted as the communication medium.
Function
• The types of data which the PCM and external tester can receive and send using the external tester communication function include the following items:
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― Recording of engine control system information in the PCM.
― Data related to exhaust emission such as input/output signals, the PCM-calculated values and system status.
DLC-2 Outline
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• The DLC-2 located in the driver compartment is a service connector defined by EOBD regulations.
• The following are functions for each terminal.
|
Terminal
|
Function
|
|
B+
|
Battery positive voltage
|
|
CAN-L
|
Serial communication Lo terminal
|
|
CAN-H
|
Serial communication Hi terminal
|
|
GND1
|
Ground (chassis)
|
|
GND2
|
Ground (signal)
|
