DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
4
ABS or TCS* operates frequently./TCS* does not work correctly.
*: DSC/RSC system function contains traction control function; DSC indicator light goes on and
off while DSC/RSC is operating.
[TROUBLESHOOTING HINTS]
z
There is a difference in size or air pressure between the front and rear tires
z
Incorrect ABS wheel-speed signal is input to DSC/RSC HU/CM
z
There is a malfunction in the engine control system (TCS malfunction)
z
Tire problem (low or high air pressure, excessive wear, different grip level by four wheels)
STEP
INSPECTION
ACTION
1
INSPECT DTCS IN
DSC/RSC HU/CM
z
Inspect the DTC for the
ON-BOARD
DIAGNOSTIC
SYSTEM.
z
Have DTCs been stored
in memory?
Yes
Perform the applicable DTC inspection.
(See
ON-BOARD DIAGNOSIS [DSC/RSC]
.)
No
Go to the next step.
2
INSPECT TIRE SIZE AND
AIR PRESSURE
z
Inspect the tire size and
the air pressure.
z
Are size and air pressure
as specified?
Yes Go to the next step.
No
Replace with specified tires and adjust tire air pressure.
3
INSPECT ABS WHEEL-
SPEED SENSOR OUTPUT
VALUE
z
Inspect the output value
from the ABS wheel-
speed sensor.
(See
FRONT ABS WHEEL-
SPEED SENSOR
INSPECTION
.)
(See
REAR ABS WHEEL-
SPEED SENSOR
INSPECTION [2WD]
.)
Yes Go to the next step.
No
z
ABS wheel-speed sensor installation inspection: Inspect
the sensor for looseness and verify that it is securely
installed.
z
Sensor rotor installation inspection: Inspect the sensor
rotor for poor installation and chipping of sensor rotor
teeth. (If sensor rotor is installed poorly, it may cause
2008 Mazda CX-9 Grand Touring
2008 BRAKES Symptom Troubleshooting (DSC/RSC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:41:34 AM
Page 11
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