DTC Diagnosis Procedure

CAUTION: Never check between wheel sensor harness connector terminals.

CHECK TIRE
Check the tire air pressure, wear and size. Refer to Service Data .

Is the inspection result normal?

YES

GO TO 4.

NO

Adjust air pressure or replace tire and GO TO 2.
CHECK DATA MONITOR (1)
CONSULT
1. Erase "Self Diagnostic Result" mode of "ABS"
2. Turn the ignition switch OFF -> ON -> OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.
3. Start the engine.
4. Select "Data Monitor" of "ABS", check "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR".
  NOTE: Set the "Data Monitor" recording speed to "10 msec".
5. Read the values (wheel speed) of both the normal wheel sensors and malfunctioning wheel sensor.
  NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
Note the difference at 50 km/h (31 MPH) between the wheel speed detected by the malfunctioning wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?

YES

GO TO 3.

NO

GO TO 4.
PERFORM SELF-DIAGNOSIS (1)
CONSULT
1. Stop the vehicle.
2. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
3. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
4. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1115" detected?

YES

GO TO 4.

NO

Inspection End.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT
Check the ABS actuator and electric unit (control unit) power supply and ground circuits. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

GO TO 5.

NO

Repair / replace harness, connector, fuse, or fusible link.
CHECK WHEEL SENSOR AND SENSOR ROTOR
1. Turn the ignition switch OFF.
2. Disconnect wheel sensor harness connector.
3. Remove dust and foreign matter from wheel sensor and sensor rotor with a vacuum dust collector through the wheel sensor mounting hole.
  CAUTION:
  Install wheel sensor with no backlash and float, and tighten the mounting bolt to the specified torque.
  - Front: Refer to Removal and Installation .
  - Rear AWD: Refer to REAR WHEEL SENSOR : Removal & Installation .
  - Rear FWD: Refer to REAR WHEEL SENSOR : Removal & Installation .
GO TO 6.
CHECK WHEEL SENSOR
Check the wheel sensor for damage.

Is the inspection result normal?

YES

GO TO 7.

NO

GO TO 8.
CHECK WHEEL SENSOR OUTPUT SIGNAL
1. Disconnect ABS actuator and electric unit (control unit) harness connector.
2. Connect ABS active wheel sensor tester (SST: J-45741-A) to wheel sensor using appropriate adapter.
3. Turn the ABS active wheel sensor tester power switch ON.
  NOTE: The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the battery in the ABS active wheel sensor tester before proceeding.
4. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel sensor tester. The red SENSOR indicator should flash ON and OFF to indicate an output signal.
  NOTE: If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and retest.
Does the ABS active wheel sensor tester detect a signal?

YES

GO TO 11.

NO

GO TO 8.
REPLACE WHEEL SENSOR (1)
CONSULT
1. Replace the wheel sensor.
  - Front: Refer to Removal and Installation .
  - Rear AWD: Refer to REAR WHEEL SENSOR : Removal & Installation .
  - Rear FWD: Refer to REAR WHEEL SENSOR : Removal & Installation .
2. Connect ABS actuator and electric unit (control unit) harness connector.
3. Erase "Self Diagnostic Result" of "ABS"
4. Turn the ignition switch OFF -> ON -> OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.
5. Start the engine.
6. Select "Data Monitor" of "ABS", check "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR".
  NOTE: Set the "Data Monitor" recording speed to "10 msec".
7. Read the values (wheel speed) of both the normal wheel sensors and malfunctioning wheel sensor.
  NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
Note the difference at 50 km/h (31 MPH) between the wheel speed detected by the malfunctioning wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?

YES

GO TO 9.

NO

GO TO 19.
PERFORM SELF-DIAGNOSIS (2)
CONSULT
1. Stop the vehicle.
2. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
3. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
4. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1115" detected?

YES

GO TO 10.

NO

Inspection End.
CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
3. Check the wheel sensor harness connector for disconnection or looseness.
Is the inspection result normal?

YES

GO TO 12.

NO

Repair / replace harness or connector, securely lock the connector, and GO TO 11.
CHECK DATA MONITOR (2)
CONSULT
1. Erase "Self Diagnostic Result" of "ABS"
2. Turn the ignition switch OFF -> ON -> OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.
3. Start the engine.
4. Select "Data Monitor" of "ABS", check "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR".
  NOTE: Set the "Data Monitor" recording speed to "10 msec".
5. Read the values (wheel speed) of both the normal wheel sensors and malfunctioning wheel sensor.
  NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
Note the difference at 50 km/h (31 MPH) between the wheel speed detected by the malfunctioning wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?

YES

GO TO 12.

NO

GO TO 13.
PERFORM SELF-DIAGNOSIS (3)
CONSULT
1. Stop the vehicle.
2. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
3. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
4. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1115" detected?

YES

GO TO 13.

NO

Inspection End.
CHECK TERMINAL
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector and then check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.
3. Disconnect wheel sensor harness connector and check each wheel sensor pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?

YES

GO TO 16.

NO

Repair / replace harness, connector, or terminal, and GO TO 14.
CHECK DATA MONITOR(3)
CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Connect wheel sensor harness connector.
3. Erase "Self Diagnostic Result" mode of "ABS"
4. Turn the ignition switch OFF -> ON -> OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.
5. Start the engine.
6. Select "Data Monitor" of "ABS", check "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR".
  NOTE: Set the "Data Monitor" recording speed to "10 msec".
7. Read the values (wheel speed) of both the normal wheel sensors and malfunctioning wheel sensor.
  NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
Note the difference at 50 km/h (31 MPH) between the wheel speed detected by the malfunctioning wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?

YES

GO TO 15.

NO

GO TO 16.
PERFORM SELF-DIAGNOSIS (4)
CONSULT
1. Stop the vehicle.
2. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
3. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
4. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1115" detected?

YES

GO TO 16.

NO

Inspection End.

CHECK WHEEL SENSOR HARNESS

Turn the ignition switch OFF.
Disconnect ABS actuator and electric unit (control unit) harness connector.
Disconnect wheel sensor harness connector.

Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensor harness connector. (Check the continuity while turning steering wheel left and right, or while moving center harness in wheel housing.)

Power Supply Circuit

ABS actuator and electric unit (control unit)		Wheel sensor			Continuity
Connector	Terminal	Connector		Terminal
E54	19	E19	(Front LH wheel)	1	Yes
	16	E41	(Front RH wheel)
	31	C2	(Rear LH wheel)
	17	C3	(Rear RH wheel)

Signal Circuit

ABS actuator and electric unit (control unit)		Wheel sensor			Continuity
Connector	Terminal	Connector		Terminal
E54	8	E19	(Front LH wheel)	2	Yes
	4	E41	(Front RH wheel)
	18	C2	(Rear LH wheel)
	29	C3	(Rear RH wheel)

Check the continuity between ABS actuator and electric unit (control unit) harness connector and the ground.

Power Supply Circuit

ABS actuator and electric unit (control unit)		--	Continuity
Connector	Terminal
E54	19	Ground	No
	16
	31
	17

Is the inspection result normal?

YES

GO TO 17.

Repair / replace harness or connector, and GO TO 17.

CHECK DATA MONITOR (4)
CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Connect wheel sensor harness connector.
3. Erase "Self Diagnostic Result" of "ABS"
4. Turn the ignition switch OFF -> ON -> OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.
5. Start the engine.
6. Select "Data Monitor" of "ABS", check "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR".
  NOTE: Set the "Data Monitor" recording speed to "10 msec".
7. Read the values (wheel speed) of both the normal wheel sensors and malfunctioning wheel sensor.
  NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
Note the difference at 50 km/h (31 MPH) between the wheel speed detected by the malfunctioning wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?

YES

GO TO 18.

NO

Replace the ABS actuator and electric unit (control unit). Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) : Removal & Installation .
PERFORM SELF-DIAGNOSIS (5)
CONSULT
1. Stop the vehicle.
2. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
3. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
4. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1115" detected?

YES

Replace the ABS actuator and electric unit (control unit). Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) : Removal & Installation .

NO

Inspection End.
REPLACE SENSOR ROTOR
CONSULT
1. Replace the sensor rotor.
  - Front: Refer to Removal and Installation .
  - Rear AWD: Refer to REAR WHEEL SENSOR : Removal & Installation .
  - Rear FWD: Refer to REAR WHEEL SENSOR : Removal & Installation .
2. Erase "Self Diagnostic Result" mode of "ABS"
3. Turn the ignition switch OFF -> ON -> OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.
4. Start the engine.
5. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
  NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
6. Stop the vehicle.
7. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
8. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
9. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1115" detected?

YES

Replace the ABS actuator and electric unit (control unit). Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) : Removal & Installation .

NO

Inspection End.