Mazda CX-9 Grand Touring 2009 Manual page 494

(See BRAKE SWITCH
INSPECTION .)
4
Is the brake switch normal?
VERIFY THAT THE SAME DTC IS
NOT PRESENT
Reconnect all disconnected
connectors.
5
Clear the DTCs from the memory.
(See ON-BOARD DIAGNOSTIC
[DSC/RSC].)
Are the same DTCs present?
VERIFY THAT NO OTHER DTCS
ARE PRESENT
6
Are any other DTCs output?
DTC C1963 [DSC/RSC]
NOTE:
The initial point of the combined sensor (yaw rate sensor part) is corrected
based on the signals from each sensor while the vehicle is driven straight,
however, the correction cannot be performed if the vehicle is continuously
driven on a curve and DTC C1963 is detected.
DTC C1963 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DTC C1963 Combined sensor (Yaw rate sensor part) initial point correction error
DETECTION
CONDITION
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
DTC C1963 [DSC/RSC] DIAGNOSTIC PROCEDURE
STEP INSPECTION
PERFORM INITIALIZATION
PROCEDURE
Perform the initialization
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
When a difference occurs between the estimated yaw rate value which is
calculated by each sensor and the yaw rate value which is detected by the
combined sensor (yaw rate sensor part).
It occurs since the initial point correction for the combined sensor (yaw rate
sensor part) cannot be performed due to the vehicle being continuously driven
on a curve, and does not indicate an DSC/RSC system malfunction.
Replace the brake switch, then go to the next step.
No (See BRAKE PEDAL
REMOVAL/INSTALLATION .)
Repeat the inspection from Step 1.
If the malfunction recurs, replace the DSC/RSC
Yes HU/CM, then go to the next step.
(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.
ACTION