Stability Control); On-Board Diagnostic System External Tester Communication Function (Abs, Dynamic Stability Control); Connections And Communication Contents; Serial Communication - Mazda 2006 MX-5 Service Highlights

ON-BOARD DIAGNOSTIC SYSTEM EXTERNAL TESTER COMMUNICATION FUNCTION (ABS, DYNAMIC

STABILITY CONTROL)

• The external tester communication function enables communication of diagnostic data (DTC read-outs, input/
output signal read-outs, and operation of input/output parts) between the ABS HU/CM or the DSC HU/CM and
an external tester.

Connections and Communication Contents

On-board diagnostic
(malfunction detection)
function
PID/DATA monitor function
Active command modes
function

Serial communication

• Serial communication (two-way communication) allows for multiple data to be sent and received instantly along
the same line.
• By connecting the WDS or equivalent to the DLC-
2, diagnostic data can be sent and received
between the WDS or equivalent and the ABS HU/
CM or DSC HU/CM using the CAN_H and CAN_L
terminals (within the DLC-2).
• The ABS HU/CM or DSC HU/CM receives the
command signals of the malfunction detection
function, PID/data monitor function, and the active
command modes function from the WDS or
equivalent, and sends DTCs and data regarding
the operating condition and status of each input/
output part to the WDS or equivalent.
Diagnostic function name
Malfunction detection function
PID/data monitor function
Active command modes function
End Of Sie
ON-BOARD DIAGNOSTIC
Connection
Input/output: CAN_H (HS), CAN_L (HS)
Input/output: CAN_H (HS), CAN_L (HS)
Input/output: CAN_H (HS), CAN_L (HS)
Signal received
DTC verification signal
Command signal to read selected
monitor item
Operation command signal for selected
active command modes item
External tester
WDS or equivalent
Communication method
Serial communication
Serial communication
Serial communication
DLC-2
DTC
Monitored data for requested monitor
item
Input/output part name
E5U040243750N05
E5U402AW5001
Signal sent
04–02–9
04–02