DTC C1222 [DSC/RSC]
DTC C1222 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC C1222 [DSC/RSC] DIAGNOSTIC PROCEDURE
3
z
Clear the DTC from the memory.
(See
ON-BOARD DIAGNOSTIC
[DSC/RSC]
.)
z
Are the same DTCs present?
Yes
If the malfunction recurs, 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.
4
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 C1222
ABS wheel-speed sensor system
DETECTION
CONDITION
z
When the difference in the wheel speed between one tire and the others
exceeds 25%.
POSSIBLE CAUSE
z
A tire of different diameter is installed.
z
An incorrect ABS sensor rotor is installed (different number of teeth).
STEP
INSPECTION
ACTION
1
INSPECT PID (WHEEL SPEED) FOR
DIFFERENCE IN EACH WHEEL
SPEED USING M-MDS
z
Turn the ignition switch off.
z
Connect the M-MDS to the DLC-2.
z
Select the following PIDs using the
M-MDS:
WSPD_LF
WSPD_LR
WSPD_RF
WSPD_RR
z
Drive the vehicle.
z
Verify that the wheel speeds detected
Yes Go to Step 4.
No
Go to the next step.
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 27
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