Mazda CX-9 Grand Touring 2009 Manual page 487

DTC C1278, C1295, U2023 [DSC/RSC]
DTC C1278, C1295, U2023 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DTC C1278, C1295, U2023 Steering angle sensor system
DETECTION CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC C1278, C1295, U2023 [DSC/RSC] DIAGNOSTIC PROCEDURE
STEP
INSPECT FOR BCM MALFUNCTION
Turn the ignition switch off.
1
Using the M-MDS, perform the DTC
inspection for the BCM.
Are any DTCs detected?
VERIFY DTC TROUBLESHOOTING
COMPLETED
Clear the DTC from the memory.
2
(See ON-BOARD DIAGNOSTIC
[DSC/RSC].)
Are the same DTCs present?
VERIFY AFTER REPAIR PROCEDURE
3
Are any other DTCs present?
DTC C1288 [DSC/RSC]
DTC C1288 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DTC C1288
DETECTION
CONDITION
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
C1278
The steering angle sensor detects an abnormality in the signal.
C1295, U2023
The steering angle sensor detects an internal abnormality.
Steering angle sensor malfunction
Poor connection at connectors (female terminal)
INSPECTION
Brake fluid pressure sensor system
The pressure from the brake fluid pressure sensor when the system starts
up is not within specification.
Open or short circuit in the brake fluid pressure sensor circuit in the
ACTION
Go to applicable DTC inspection.
Yes
(See DTC TABLE [BCM] .)
No Go to the next step.
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.