Mazda CX-9 Grand Touring 2009 Manual page 488

POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC C1288 [DSC/RSC] DIAGNOSTIC PROCEDURE
STEP
INSPECT CONVENTIONAL BRAKE
SYSTEM
Inspect the conventional Drake system for
the following:
Normal master cylinder operation
1
Brake fluid leakage between the
master cylinder and DSC/RSC
HU/CM
Normal brake switch operation
Is the conventional brake system normal?
INSPECT BRAKE FLUID PRESSURE
SENSOR
Inspect the brake fluid pressure sensor.
2
(See BRAKE FLUID PRESSURE
SENSOR INSPECTION .)
Is the brake fluid pressure sensor normal?
VERIFY NO ABNORMALITY ON BRAKE
FLUID PRESSURE SENSOR
Clear the DTCs from the memory.
3
(See ON-BOARD DIAGNOSTIC
[DSC/RSC].)
Are the same DTCs present?
VERIFY THAT NO OTHER DTCS ARE
PRESENT
4
Are any other DTCs output?
DTC C1327 [DSC/RSC]
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
DSC/RSC HU/CM
Malfunction in the brake fluid pressure sensor
Conventional brake system malfunction
INSPECTION ACTION
Yes Go to the next step.
Replace the malfunctioning part, then go to
No
the next step.
Yes Go to the next step.
Replace the DSC/RSC HU/CM, then go to
the next step.
No
(See DSC/RSC HU/CM
REMOVAL/INSTALLATION .)
Replace the DSC/RSC HU/CM, then go to
the next step.
Yes
(See DSC/RSC HU/CM
REMOVAL/INSTALLATION .)
No Go to the next step.
Go to the applicable DTC inspection.
Yes (See ON-BOARD DIAGNOSTIC
[DSC/RSC].)
No DTC troubleshooting completed.