Mazda 6 2002 - Dtc B1318

P50
ON-BOARD DIAGNOSTIC (ABS/TCS)
Acrive Command Mode
End Of Si e
DTC B1318
A6E697567650W03
Caution
•
••
• When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness connector, the SST (49 G066
001) must be used. (See P29 ABS (ABS/TCS) HU/CM INSPECTION.)
RF_WSPD
(Right front wheel-speed
sensor input)
KPH or MPH
• Vehicle is stopped: 0 KPH
{0 MPH}
• Vehicle is driving:
Indicates vehicle speed
Inspect wheel-speed
sensor/sensor rotor.
D, G
LR_WSPD
(Left rear wheel-speed
sensor input)
KPH or MPH
• Vehicle is stopped: 0 KPH
{0 MPH}
• Vehicle is driving:
Indicates vehicle speed
Inspect wheel-speed
sensor/sensor rotor.
C, F
RR_WSPD
(Right rear wheel-speed
sensor input)
KPH or MPH
• Vehicle is stopped: 0 KPH
{0 MPH}
• Vehicle is driving:
Indicates vehicle speed
Inspect wheel-speed
sensor/sensor rotor.
A, B
ABS_VOLT
(System battery voltage
value)
V
• Ignition key at ON: B+
• Idle: Approx. 1416 V
Inspect power supply circuit.
(See P29 ABS (ABS/TCS)
HU/CM INSPECTION )
Z
Command Name Definition Operation Note
ABS_POWER Fail-safe relay ON/OFF
Ignition key at ON
(Engine OFF), and
driving
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
VS_OUTPUT Vehicle speed signal output SPEED
PID Name
(Definition)
Unit/Condition Condition/Specification Action
ABS (ABS/
TCS) HU/CM/
CM terminal
DTC B1318 ABS (ABS/TCS) power supply
DETECTION
CONDITION
• Low voltage is detected at the voltage monitor of solenoid valve monitor, or the motor monitor.
POSSIBLE
CAUSE
• Malfunction of fuse (SUS 15 A)
• Open or short to power circuit in harness between DSC HU/CM terminal G and battery positive terminal
• Open circuit in harness between body ground and ABS (ABS/TCS) HU/CM terminal A
• Battery and/or generator malfunction