Mazda CX-9 Grand Touring 2009 Manual page 495

procedure for the combined
sensor.
1
(See DSC/RSC SENSOR
INITIALIZATION
PROCEDURE .)
VERIFY DTC
TROUBLESHOOTING
COMPLETED
Clear the DTC from the memory.
(See ON-BOARD
2
DIAGNOSTIC [DSC/RSC].)
Start the engine and drive the
vehicle at 72 km/h {45 mph} or
more.
Is the same DTC present?
VERIFY AFTER REPAIR
PROCEDURE
3
Are any other DTCs present?
DTC C1991 [DSC/RSC]
DTC C1991 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DTC C1991
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC C1991 [DSC/RSC] DIAGNOSTIC PROCEDURE
STEP INSPECTION
VERIFY INITIALIZATION
PROCEDURE.
1
Has the DSC/RSC sensor
initialization procedure been
performed?
VERIFY DTC
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
After the initialization procedure for the combined
sensor has been completed, go to the next step.
Yes
No
Yes
No
DSC/RSC sensor (abnormal initialization) system
The DSC/RSC sensor detects that the initialization procedure has not
been performed.
The initialization procedure for the DSC/RSC sensor has not been
performed.
Yes Go to the next step.
Perform the DSC/RSC sensor initialization procedure,
No
Repeat the inspection from Step 1.
If the malfunction occurs again, replace the
DSC/RSC HU/CM, then go to the next step.
(See DSC/RSC HU/CM
REMOVAL/INSTALLATION .)
Go to the next step.
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC [DSC/RSC].)
DTC troubleshooting completed.
ACTION
then go to the next step. (See DSC/RSC SENSOR
INITIALIZATION PROCEDURE .)