ON-BOARD DIAGNOSTIC SYSTEM EXTERNAL DIAGNOSTIC UNIT COMMUNICATION FUNCTION [PCM (SKYACTIV-G 2.0)]
2016 – MX-5 – Engine
ON-BOARD DIAGNOSTIC SYSTEM EXTERNAL DIAGNOSTIC UNIT COMMUNICATION FUNCTION [PCM (SKYACTIV-G 2.0)]
Outline
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Function for allowing both the PCM and external tester to receive and send data.
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The DLC-2 has been adopted as the communication medium.
Function
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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.
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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 OBD-II regulations.
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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 |
— |