Mazda CX-9 Grand Touring 2009 Manual page 509

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