DTC C1991 [DSC/RSC]
DTC C1991 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC C1991 [DSC/RSC] DIAGNOSTIC PROCEDURE
1
procedure for the combined
sensor.
(See
DSC/RSC SENSOR
INITIALIZATION
PROCEDURE
.)
After the initialization procedure for the combined
sensor has been completed, go to the next step.
2
VERIFY DTC
TROUBLESHOOTING
COMPLETED
z
Clear the DTC from the memory.
(See
ON-BOARD
DIAGNOSTIC [DSC/RSC]
.)
z
Start the engine and drive the
vehicle at 72 km/h {45 mph} or
more.
z
Is the same DTC present?
Yes
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
.)
No
Go to the next step.
3
VERIFY AFTER REPAIR
PROCEDURE
z
Are any other DTCs present?
Yes
Go to the applicable DTC inspection.
(See
ON-BOARD DIAGNOSTIC [DSC/RSC]
.)
No
DTC troubleshooting completed.
DTC C1991
DSC/RSC sensor (abnormal initialization) system
DETECTION
CONDITION
z
The DSC/RSC sensor detects that the initialization procedure has not
been performed.
POSSIBLE CAUSE
z
The initialization procedure for the DSC/RSC sensor has not been
performed.
STEP
INSPECTION
ACTION
1
VERIFY INITIALIZATION
PROCEDURE.
z
Has the DSC/RSC sensor
initialization procedure been
performed?
Yes Go to the next step.
No
Perform the DSC/RSC sensor initialization procedure,
then go to the next step. (See
DSC/RSC SENSOR
INITIALIZATION PROCEDURE
.)
VERIFY DTC
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:50:13 AM
Page 39
© 2005 Mitchell Repair Information Company, LLC.
