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 off.
• 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?
Clearance
Front: 0.3-1.0 mm {0.012-0.057 in}
Rear: 0.8-1.6 mm {0.032-0.062 in}
Yes
Go to the next step.
No
Replace the ABS wheel-speed sensor, then go to Step 4.
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.
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.
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 DTC Table.)
No
DTC troubleshooting completed.