Mazda CX-9 Grand Touring 2009 Manual page 483

Clear the DTC from the memory.
(See ON-BOARD DIAGNOSTIC
3
[DSC/RSC].)
Are the same DTCs present?
VERIFY AFTER REPAIR PROCEDURE
4
Are any other DTCs present?
DTC C1222 [DSC/RSC]
DTC C1222 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DTC C1222
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC C1222 [DSC/RSC] DIAGNOSTIC PROCEDURE
STEP INSPECTION
INSPECT PID (WHEEL SPEED) FOR
DIFFERENCE IN EACH WHEEL
SPEED USING M-MDS
Turn the ignition switch off.
Connect the M-MDS to the DLC-2.
Select the following PIDs using the
M-MDS:
1
WSPD_LF
WSPD_LR
WSPD_RF
WSPD_RR
Drive the vehicle.
Verify that the wheel speeds detected
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
ABS wheel-speed sensor system
When the difference in the wheel speed between one tire and the others
exceeds 25%.
A tire of different diameter is installed.
An incorrect ABS sensor rotor is installed (different number of teeth).
If the malfunction recurs, 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.
ACTION
Yes Go to Step 4.
No Go to the next step.