DIAGNOSTIC PROCEDURE
DTC C1233, C1234, C1235, C1236 [DSC/RSC] DIAGNOSTIC PROCEDURE
DETECTION
CONDITION
abnormal acceleration that exceeds specification.
z
Periodic abnormality is detected in the signal wave pattern from the ABS
wheel-speed sensors.
POSSIBLE CAUSE
z
ABS wheel-speed sensor malfunction (low output, metal shavings on
sensor)
z
ABS sensor rotor malfunction (chipping of sensor rotor teeth)
z
Poor installation of ABS wheel-speed sensor and/or sensor rotor
z
Excessive clearance between the ABS wheel-speed sensor and sensor rotor
STEP
INSPECTION
ACTION
1
INSPECT PID FOR ABNORMAL
OUTPUT FROM ABS WHEEL-SPEED
SENSOR 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
Start the engine and drive the vehicle.
z
Verify that the PIDs of the four ABS
wheel-speed sensors correspond
approximately.
z
Do the vehicle speeds correspond?
Yes Go to Step 4.
No
If there is a difference in speeds of the four
wheels, go to the next step.
INSPECT IF MALFUNCTION
OCCURRED DUE TO IMPROPER
SENSOR CLEARANCE.
z
Inspect the clearance between the
ABS wheel-speed sensor and the
ABS sensor rotor.
Yes 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
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