Mazda 2002 6 - Page 637

DYNAMIC STABILITY CONTROL
P–41
P
*
: Used for vehicle manufacturing, not used for DSC.
Inspection Using An Oscilloscope (Reference)
Steering angle (steering angle signal 1 and 2)
• DSC HU/CM terminal:
Steering angle signal 2 : W ( + ) — R ( - )
Steering angle signal 1 : X ( + ) — R ( - )
• Oscilloscope setting:
1 V/DIV (Y), 25 ms/DIV (X), DC range
• Vehicle condition: Rotating steering wheel at one
revolution per second
Note
• As steering wheel rotation speed increases,
period of wave shortens.
• As for shape of steering angle signals 1 and
2, the phase is different.
S Combine sensor
Combine
sensor
— 3.5—5.0
• Inspect related harness
• Inspect combine sensor
T
Yaw rate
(yaw rate signal)
Combine
sensor
Vehicle is stopped 2.3—2.7
• Inspect related harness
• Inspect yaw rate sensor
Right cornering
Fluctuation
between
2.5—4.62
Left cornering
Fluctuation
between
2.5—0.33
U
Steering angle
(neutral signal)
Steering angle
sensor
Steering position:
center position 25°—29°
Below 1.0
• Inspect related harness
• Inspect steering angle
sensor
Except above condition Approx. 4
V —— — — —
W
Steering angle
(steering angle
signal 2)
Steering angle
sensor
• Inspect using the wave profile.
(See P–41 Inspection Using An
Oscilloscope (Reference))
• Inspect related harness
• Inspect steering angle
sensor
X
Steering angle
(steering angle
signal 1)
Steering angle
sensor
• Inspect using the wave profile.
(See P–41 Inspection Using An
Oscilloscope (Reference))
• Inspect related harness
• Inspect steering angle
sensor
Y
Combine sensor
(ground)
Combine
sensor
— Below 1.0
• Inspect related harness
• Inspect combine sensor
AA DSC OFF switch
DSC OFF
switch
When switch is pressed Below 1.0
• Inspect related harness
• Inspect DSC OFF switch
When switch is not pressed B+
AB OBD
KLN terminal of
DLC-2
It cannot be determined with terminal
voltage whether the condition is good or bad
because advanced function diagnostic
output is performed with serial
communication. Inspect with service codes.
• Inspect related harness
• Inspect DSC HU/CM
AC
Auto cruise set
signal output
Auto cruise unit
When auto cruise is ON Below 1.0
• Inspect related harness
• Inspect DSC HU/CM
When auto cruise is OFF B+
AD —— — — —
AE
Vehicle speed
output
Audio unit,
Wiper and
washer switch,
Car-navegation
unit, Auto
leveling control
unit, Cruise
actuator
Vehicle is stopped 0
• Inspect related harness
• Inspect front wheel-speed
sensor
• Inspect using the wave profile.
(See P–41 Inspection Using An
Oscilloscope (Reference))
AF CAN-L ——
No need to
check
—
AG CAN-H ——
No need to
check
—
AH —— — — —
Terminal Signal Connected to Test condition Voltage (V) Action
A6E6921W014