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DTC C0033:07, C0034:07, C0034:29, C0034:2F, C0034:37 OR C0034:64 [ELECTRONICALLY CONTROLLED BRAKE UNIT]

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Note

•  When only the driving wheels are rotated while the vehicle is jacked up, DTCs C0037:29 and C003A:29 are input to the memory.

Outline

System malfunction location	DTC C0033:07			ABS wheel-speed sensor (RF)
	DTC C0034:07, C0034:29, C0034:2F, C0034:37 or C0034:64			ABS wheel-speed sensor (RF), ABS wheel-speed sensor rotor
Detection condition	•  C0033:07 ―  While driving at a vehicle speed of 14 km/h {8.7 mph} or more, the electronically controlled brake unit detects a periodic pulse deficiency in the signal wave pattern of the ABS wheel-speed sensor (RF). •  C0034:07 ―  The electronically controlled brake unit detects a sudden change in the wheel acceleration on the right front wheel. •  C0034:29 ―  While driving at a vehicle speed of 20 km/h {12 mph} or more, the electronically controlled brake unit detects that the wheel speed signal of the right front wheel is lower than the specification compared to the other wheel speed signals. •  C0034:2F ―  While driving, the electronically controlled brake unit detects any of the following conditions. •  Amount of change in wheel speed of right front wheel is larger than specification •  ABS control corresponding to right front wheel continues for 28 s or more •  C0034:37 ―  While driving, the electronically controlled brake unit detects that the wheel speed signal of the right front wheel is extremely high. •  C0034:64 ―  While driving at a vehicle speed of 20 km/h {12 mph} or more, the electronically controlled brake unit detects that the wheel speed signal of the right front wheel is higher than the specification compared to the other wheel speed signals.
Fail-safe	Refer to “DTC Table” and “Fail-safe Function Malfunction Contents Table”. (See DTC TABLE [ELECTRONICALLY CONTROLLED BRAKE UNIT].)
Possible cause	•  Continuous ABS operation •  ABS wheel-speed sensor (RF) connector or terminals malfunction •  Electronically controlled brake unit connector or terminals malfunction •  ABS sensor rotor malfunction (missing ABS sensor rotor teeth due to foreign material obstruction) •  ABS wheel-speed sensor (RF) or ABS sensor rotor installation malfunction (If the ABS 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 •  ABS wheel-speed sensor (RF) malfunction •  Electronically controlled brake unit malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	VERIFY THAT THERE IS NO ABS WHEEL-SPEED SENSOR OUTPUT MALFUNCTION •  Select the following PIDs. (See PID/DATA MONITOR INSPECTION.) (See PID/DATA MONITOR TABLE [ELECTRONICALLY CONTROLLED BRAKE UNIT].) ―  WSPD_SEN_L/F ―  WSPD_SEN_L/R ―  WSPD_SEN_R/F ―  WSPD_SEN_R/R •  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 ABS WHEEL-SPEED SENSOR (RF) CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT ELECTRONICALLY CONTROLLED BRAKE UNIT CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	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.) •  Is the clearance normal?	Yes	Go to the next step.
		No	Replace the ABS wheel-speed sensor (RF) and perform the repair completion verification. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION [(E)].)
5	VISUALLY INSPECT ABS SENSOR ROTOR FOR FOREIGN MATERIAL ADHERING OR IMPROPER INSTALLATION •  Visually inspect for ABS sensor rotor. (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION [(E)].) •  Is there foreign matter on the ABS sensor rotor?	Yes	Repair or replace the ABS sensor rotor and perform the repair completion verification. (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION [(E)].)
		No	Go to the next step.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Start the engine and drive the vehicle at 20 km/h {12 mph} or more. •  Perform the DTC inspection for the electronically controlled brake unit. (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the electronically controlled brake unit, then go to the next step. (See ELECTRONICALLY CONTROLLED BRAKE UNIT REMOVAL/INSTALLATION [L.H.D.].) (See ELECTRONICALLY CONTROLLED BRAKE UNIT REMOVAL/INSTALLATION [R.H.D.].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.