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DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [APPLIED VIN (ASSUMED): JM0 DY10Y100 108402-, JM6 DY10*100 109001-]

id0402a4806400

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 OTHER DTC HAS BEEN RECORDED • Have DTCs related to solenoid valve, pump motor, or pump motor relay been stored? | Yes | Go to applicable DTC inspection.
No | Go to next step.
2 | 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.
No | Go to next step.
3 | 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 6.
No | Go to next step.
4 | 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.
No | Replace ABS wheel-speed sensor(s), then go to Step 6.
5 | 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.
No | Replace sensor rotor, then go to Step 6.
6 | INSPECT ABS HU/CM OPERATION • Perform ABS HU/CM system inspection. • Is it normal? | Yes | Go to next step.
No | Replace ABS HU/CM, then go to next step.
7 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory. (See Clearing DTCs Procedures.) • 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 | Replace ABS CM, then go to next step.
No | Go to next step.
8 | VERIFY AFTER REPAIR PROCEDURE • Is there any other DTC present? | Yes | Go to applicable DTC inspection.
No | Troubleshooting completed.