DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236

id040200806400

DTC

C1141, C1234

C1142, C1233

C1143, C1235

C1144, C1236

RF ABS wheel-speed sensor/sensor rotor

LF ABS wheel-speed sensor/sensor rotor

RR ABS wheel-speed sensor/sensor rotor

LR ABS wheel-speed sensor/sensor rotor

DETECTION CONDITION

•  C1141, C1142, C1143, C1144:

―  Abnormal sensor output due to chipping of sensor rotor teeth, etc. is detected

•  C1234, C1233, C1235, C1236:

―  Abnormal sensor output is detected on any of four vehicle wheels when the vehicle goes from start to a speed of 10 km/h {6.2 mph}

―  Greater than specified amount of ABS demand occurs from front ABS wheel sensors when vehicle is started

―  ABS control operates for 28 s or more

POSSIBLE CAUSE

•  Malfunction of ABS wheel-speed sensor(s)

•  Damaged ABS sensor rotor(s)

•  Incorrect clearance between ABS wheel-speed sensor and ABS sensor rotor

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

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY IF CURRENT CONCERNED INPUT SIGNAL STATUS IS INTERMITTENT OR CONSTANT • Turn ignition key to OFF. • Connect WDS or equivalent to DLC-2. • Start engine and drive vehicle. • Access LF_WSPD, LR_WSPD, RF_WSPD and RR_WSPD using WDS or equivalent • Do vehicle speeds correspond approximately to the four PIDs above?	Yes	Go to Step 3.
1		No	Go to next step.
2	INSPECT ABS WHEEL-SPEED SENSOR CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Disconnect ABS HU/CM and ABS wheel-speed sensor connectors. • Inspect continuity between suspected sensor terminal(s) of ABS HU/CM connector (harness side) and ground(s). ― RF ABS wheel-speed sensor: Q—ground ― LF ABS wheel-speed sensor: I—ground ― RR ABS wheel-speed sensor: E—ground ― LR ABS wheel-speed sensor: U—ground • Is there continuity?	Yes	Repair or replace harness for short to ground circuit between ABS HU/CM and ABS wheel-sped sensor, then go to Step 5.
2		No	Go to next step.
3	INSPECT SENSOR ROTOR CLEARANCE • Jack-up vehicle and support it with safety stands. • Remove suspected wheel(s). • Inspect clearance between ABS wheel-speed sensor and sensor rotor. • Is clearance normal? Clearance Front: 1.88 mm {7.40 in} or less Rear: 1.9 mm {7.5 in} or less	Yes	Go to next step.
3		No	Replace ABS wheel-speed sensor(s), then go to Step 5.
4	INSPECT SENSOR ROTOR FOR DAMAGE • Jack-up vehicle and support it with safety stands. • Remove suspected wheel(s). • Visually inspect sensor rotor for missing and deformed. • Is sensor rotor normal?	Yes	Go to next step.
4		No	Replace sensor rotor, then go to next step.
5	VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory. (See ABS ON-BOARD DIAGNOSIS.) • Start engine and drive vehicle at 10 km/h {6.2 mph} or above. • Gradually slow down vehicle and stop. • Is same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the ABS CM, then go to next step.
5		No	Go to next step.
6	VERIFY AFTER REPAIR PROCEDURE • Is there any other DTC present?	Yes	Go to applicable DTC inspection.
6		No	Troubleshooting completed.

DTC	C1141, C1234 C1142, C1233 C1143, C1235 C1144, C1236		RF ABS wheel-speed sensor/sensor rotor LF ABS wheel-speed sensor/sensor rotor RR ABS wheel-speed sensor/sensor rotor LR ABS wheel-speed sensor/sensor rotor
DETECTION CONDITION		• C1141, C1142, C1143, C1144: ― Abnormal sensor output due to chipping of sensor rotor teeth, etc. is detected • C1234, C1233, C1235, C1236: ― Abnormal sensor output is detected on any of four vehicle wheels when the vehicle goes from start to a speed of 10 km/h {6.2 mph} ― Greater than specified amount of ABS demand occurs from front ABS wheel sensors when vehicle is started ― ABS control operates for 28 s or more
POSSIBLE CAUSE		• Malfunction of ABS wheel-speed sensor(s) • Damaged ABS sensor rotor(s) • Incorrect clearance between ABS wheel-speed sensor and ABS sensor rotor • Poor installation of ABS wheel-speed sensor and/or ABS sensor rotor (If the sensor rotor is installed twisted, it may cause output of abnormal wave form at high speeds)