DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2806400

DTC
C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236
ABS wheel-speed sensor/ABS sensor rotor
DETECTION CONDITION
•  C1141, C1142, C1143, C1144
―  Periodic abnormality is detected in the signal wave pattern from the ABS wheel-speed sensors.
•  C1234, C1233, C1235, C1236
―  Wheel-speed signal is not input or extremely low wheel-speed signal is input from any of the four wheels when driving at a vehicle speed of 10 km/h {6.2 mph} or more.
―  A large, sudden change in wheel-speed signal is detected.
―  ABS control operates for 28 s or more.
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
•  Continuous ABS operation

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 3.
No
Go to the next step.
2
INSPECT ABS WHEEL-SPEED SENSOR CONNECTOR FOR SHORT TO GROUND
•  Disconnect the ABS wheel-speed sensor connectors.
•  Verify that there is no continuity between the following ABS wheel-speed sensor terminals (vehicle harness-side) and body ground.
―  ABS wheel-speed sensor (RF):
B—Body ground
―  ABS wheel-speed sensor (LF):
B—Body ground
―  ABS wheel-speed sensor (RR):
B—Body ground
―  ABS wheel-speed sensor (LR):
B—Body ground
•  Is the continuity normal?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 5.
3
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:2.1 mm {0.082 in} or less
Rear:1.46 mm {0.057 in} or less
Yes
Go to the next step.
No
Replace the ABS wheel-speed sensor, then go to Step 5.
(See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)
(See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)
4
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 wheel hub component, then go to the next step.
(See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)
(See WHEEL HUB COMPONENT REMOVAL/INSTALLATION.)
5
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 DSC CM.
(See DSC HU/CM REMOVAL/INSTALLATION.)
No
Go to the next step.
6
VERIFY THAT NO OTHER DTCS ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
No
DTC troubleshooting completed.