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ON-BOARD DIAGNOSTIC SYSTEM EXTERNAL DIAGNOSTIC UNIT COMMUNICATION FUNCTION [PCM (SKYACTIV-G 2.0)]

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:

    • 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

  • The DLC-2 located in the driver compartment is a service connector defined by OBD-II regulations.

  • The following are functions for each terminal.

—: Not applicable

Terminal

Function

A

Battery positive voltage

B

—

C

—

D

—

E

CAN communication line LO (HS)

F

CAN communication line HI (HS)

G

—

H

Ground (signal)

I

—

J

Ground (chassis)

K

CAN communication line LO (MS)

L

CAN communication line HI (MS)

M

—

N

—

O

—

P

—
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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