DTC C1148, C1158, C1168, C1178 [ABS]

id0402a7801200

DTC

C1148

C1158

C1168

C1178

RF ABS wheel-speed sensor/ABS sensor rotor system

LF ABS wheel-speed sensor/ABS sensor rotor system

RR ABS wheel-speed sensor/ABS sensor rotor system

LR ABS wheel-speed sensor/ABS sensor rotor system

DETECTION CONDITION

•  Vehicle wheel speed signals of any of the four vehicle wheels indicate abnormal acceleration that exceeds specification.

•  Vehicle wheel speed signals of any of the four vehicle wheels indicate speed that exceeds specification.

POSSIBLE CAUSE

•  ABS wheel-speed sensor malfunction (low output, metal shavings on sensor)

•  ABS sensor rotor malfunction (chipping of sensor rotor teeth)

•  Poor installation of ABS wheel-speed sensor and/or sensor rotor (If the sensor rotor is installed at an angle, it may cause output of abnormal wave pattern at high speeds.)

•  Excessive clearance between the ABS wheel-speed sensor and sensor rotor

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT PID FOR ABNORMAL OUTPUT FROM ABS WHEEL-SPEED SENSOR 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 • Start the engine and drive the vehicle. • Verify that the PIDs of the four ABS wheel-speed sensors correspond approximately. • Do the vehicle speeds correspond?	Yes	Go to Step 4.
1		No	If there is a difference in speeds of the four wheels, 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. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.) • Is the clearance normal?	Yes	Go to the next step.
2		No	Replace the rear 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.
3		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 DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the memory. (See ON-BOARD DIAGNOSIS [ABS].) • 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. (See ABS HU/CM REMOVAL/INSTALLATION.)
4		No	Go to the next step.
5	VERIFY AFTER REPAIR PROCEDURE • Are any other DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [ABS].)
5		No	DTC troubleshooting completed.

DTC	C1148 C1158 C1168 C1178		RF ABS wheel-speed sensor/ABS sensor rotor system LF ABS wheel-speed sensor/ABS sensor rotor system RR ABS wheel-speed sensor/ABS sensor rotor system LR ABS wheel-speed sensor/ABS sensor rotor system
DETECTION CONDITION		• Vehicle wheel speed signals of any of the four vehicle wheels indicate abnormal acceleration that exceeds specification. • Vehicle wheel speed signals of any of the four vehicle wheels indicate speed that exceeds specification.
POSSIBLE CAUSE		• ABS wheel-speed sensor malfunction (low output, metal shavings on sensor) • ABS sensor rotor malfunction (chipping of sensor rotor teeth) • Poor installation of ABS wheel-speed sensor and/or sensor rotor (If the sensor rotor is installed at an angle, it may cause output of abnormal wave pattern at high speeds.) • Excessive clearance between the ABS wheel-speed sensor and sensor rotor