DTC C1141, C1142, C1143, C1144 [ABS]

id0402a7801000

DTC
C1141
C1142
C1143
C1144
LF ABS sensor rotor system
RF ABS sensor rotor system
LR ABS sensor rotor system
RR ABS sensor rotor system
DETECTION CONDITION
•  Periodic abnormality is detected in the signal wave pattern from the ABS wheel-speed sensors.
POSSIBLE CAUSE
•  ABS wheel-speed sensor malfunction
•  ABS sensor rotor malfunction (foreign material adhering)
•  Improper installation of ABS wheel-speed sensor and/or sensor rotor
•  Excessive clearance between the ABS wheel-speed sensor and sensor rotor

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT PID FOR ABS WHEEL-SPEED SENSOR OUTPUT ERROR USING M-MDS
•  Turn the ignition switch to the LOCK position.
•  Connect the M-MDS to the DLC-2.
•  Select the following PIDs using the M-MDS:
―  LF_WSPD
―  LR_WSPD
―  RF_WSPD
―  RR_WSPD
•  Drive the vehicle.
•  Verify that the vehicle speeds detected by the four ABS wheel-speed sensors are approximately the same.
•  Are the vehicle speeds approximately the same?
Yes
Go to Step 4.
No
Go to the next step.
2
INSPECT IF MALFUNCTION OCCURRED DUE TO IMPROPER SENSOR CLEARANCE.
•  Inspect the clearance between the ABS wheel-speed sensor and the ABS sensor rotor.
•  Is the clearance normal?
Yes
Go to the next step.
No
Replace the ABS wheel-speed sensor, then go to Step 4.
(See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)
(See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)
3
VISUALLY INSPECT ABS SENSOR ROTOR FOR FOREIGN MATERIAL ADHERING OR IMPROPER INSTALLATION
•  Is the result normal?
Yes
Go to the next step.
No
Replace the front wheel hub component or rear drive shaft, then go to the next step.
(See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)
(See REAR DRIVE SHAFT REMOVAL/INSTALLATION.)
4
VERIFY THAT THE SAME DTC IS NOT PRESENT
•  Clear the DTCs from the memory.
•  Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more.
•  Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the ABS HU/CM, then go to the next step.
(See ABS HU/CM REMOVAL/INSTALLATION.)
No
Go to the next step.
5
VERIFY THAT NO OTHER DTCS ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSIS [ABS].)
No
DTC troubleshooting completed.