ON-BOARD DIAGNOSTIC
02–02–7
02–02
Serial Communication
• Serial communication (synchronous communication) is a method of communication in which many pieces of
information are sent and received instantaneously through a single wire.
• By connecting the WDS or equivalent to DLC-2, diagnostic information can be sent and received between the
WDS or equivalent and the instrument cluster via the CAN communication line.
• The instrument cluster receives signals for the malfunction detection function and data monitor function from
the WDS or equivalent, and sends information about DTCs and input/output part operating conditions to the
WDS or equivalent.
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DLC-2 CONSTRUCTION
E5U020237020N05
• A DLC-2 connector conforming to ISO (International Organization for Standardization) standards has been
added.
• Shape and terminal arrangement as stipulated by the ISO 15031-3 (SAE J1962) international standard has
been adopted for this connector. The connector has a 16-pin construction that includes the CAN_H, CAN_L,
GND1, GND2 and B+ terminals.
End Of Sie
Diagnostic function Signal received Signal sent
Malfunction detection function DTC verification signal DTC
PID/Data monitor function Request signal to read selected monitor
item
Monitor information for requested
monitor item
Active command modes function
Operation command signal for selected
active command modes item
Wheel unit ID registration
Terminal Function
CAN _L Serial communication terminal (Lo)
CAN_H Serial communication terminal (Hi)
GND1 Body ground terminal
GND2 Serial communication ground terminal
B+ Battery power supply terminal
B+ CAN_L
GND1
CAN_H
GND2
DLC-2
CHU0602S002
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