Mazda 6. Manual - part 45
ON-BOARD DIAGNOSTIC
P–23
P
Active Command Modes Function
•
This function allows control of devices through the WDS or equivalent.
Active Command Modes Table
Note
•
When operating the ABS motor and each valve forcibly, turn VPWR RLY on, and then each command on.
VPWR RLY regulates the power supply for the ABS motor and eight valves.
External Tester Communication Function
•
The external tester communication function communicates diagnostic information (reading DTCs, reading
input/output signal, driving output parts) by sending and receiving signal between the DSC unit and external
tester.
Connection and communication information
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 data link connector, diagnostic information can be sent and received
between the WDS or equivalent and the ABS (ABS/TCS) or DSC HU/CM via the KLN terminal.
•
The DSC HU/CM receives signals for the malfunction detection function, data monitor function, and active
command modes function from the WDS or equivalent, and sends information about DTCs and input/output
part operating conditions to the WDS or equivalent.
End Of Sie
Command Name
Definition
Operation
Note
RF_DSC_V
Stability control solenoid valve (RF-LR)
ON/OFF
Ignition key at ON
(Engine OFF), and
driving
LF_DSC_V
Stability control solenoid valve (LF-RR)
ON/OFF
ABS_POWER
Fail-safe relay
ON/OFF
LR_OUTLET
Left rear ABS pressure reduction solenoid valve
ON/OFF
LR_INLET
Left rear ABS pressure retention solenoid valve
ON/OFF
RR_INLET
Right rear ABS pressure retention solenoid valve
ON/OFF
RR_OUTLET
Right rear ABS pressure reduction solenoid valve
ON/OFF
LF_INLET
Left front ABS pressure retention solenoid valve
ON/OFF
LF_OUTLET
Left front ABS pressure reduction solenoid valve
ON/OFF
RF_INLET
Right front ABS pressure retention solenoid valve
ON/OFF
RF_OUTLET
Right front ABS pressure reduction solenoid valve
ON/OFF
PMP_MOTOR
ABS motor
ON/OFF
RF_TC_VLV
Traction switch solenoid valve (RF-LR)
ON/OFF
LF_TC_VLV
Traction switch solenoid valve (LF-RR)
ON/OFF
TRAC OFF
Traction control off indicator
ON/OFF
STAB_IND
DSC indicator light
ON/OFF
YAWRATE
Yaw rate sensor initialization start
ON/OFF
LATACCEL
Lateral accel sensor initialization start
TRUE/FALSE
External tester
WDS or equivalent
Connection
Communication method
On-board diagnostic (malfunction
detection) function
Input/output: KLN signal
Serial communication
Data monitor function
Input/output: KLN signal
Serial communication
Active command modes function
Input/output: KLN signal
Serial communication
Diagnostic function
Signal received
Signal sent
Malfunction detection function
DTC verification signal
DTC
Data monitor function
Request signal to read selected monitor
item
Monitor information for requested
monitor item
Active command modes function
Request signal to read selected active
command modes item
Output part drive signal