Diagnosis Procedure

CAUTION: Never check the between wheel sensor harness connector terminals.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY SYSTEM
Check the ABS actuator and electric unit (control unit) power supply system. Refer to "DIAGNOSIS PROCEDURE ".

Is the inspection result normal?

YES: GO TO 2.

NO: Repair or replace error-detected parts.
CHECK TIRE
1. Turn the ignition switch OFF.
2. Check the tire air pressure, wear and size. Refer to "TIRE AIR PRESSURE ".
  Is the inspection result normal?
  
  YES: GO TO 5.
  
  NO: Adjust air pressure or replace tire and GO TO 3.
CHECK DATA MONITOR (1)
1. Erase self-diagnosis result for "ABS" with CONSULT.
2. Turn the ignition switch OFF, and wait 10 seconds or more.
3. Start the engine.
4. Select "ABS" and "DATA MONITOR", check the "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR" with CONSULT.
  NOTE: Set the "DATA MONITOR" recording speed to "10 msec".
5. Read a value (wheel speed) of both normal wheel sensors and error-detecting wheel sensor.
  Regarding the deference at 30 km/h (19 MPH) between the wheel speed detected by the error detecting wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?
  
  YES: GO TO 4.
  
  NO: GO TO 5.
PERFORM SELF-DIAGNOSIS (1)
1. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2. Stop the vehicle.
3. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: GO TO 5.
  
  NO: INSPECTION END
CHECK WHEEL SENSOR
1. Turn the ignition switch OFF.
2. Check the wheel sensor for damage.
3. Remove dust and foreign matter from the 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 "FRONT WHEEL SENSOR: EXPLODED VIEW ".
  - Rear: Refer to "REAR WHEEL SENSOR: EXPLODED VIEW ".
  Is the inspection result normal?
  
  YES: GO TO 8.
  
  NO: GO TO 6.
REPLACE WHEEL SENSOR (1)
1. Replace wheel sensor.
  - Front: Refer to "FRONT WHEEL SENSOR: EXPLODED VIEW ".
  - Rear: Refer to "REAR WHEEL SENSOR: EXPLODED VIEW ".
2. Erase self-diagnosis result for "ABS" with CONSULT.
3. Turn the ignition switch OFF, and wait 10 seconds or more.
4. Start the engine.
5. Select "ABS" and "DATA MONITOR", check the "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR" with CONSULT.
  NOTE: Set the "DATA MONITOR" recording speed to "10 msec".
6. Read a value (wheel speed) of both normal wheel sensors and error-detecting wheel sensor.
  Regarding the deference at 30 km/h (19 MPH) between the wheel speed detected by the error detecting wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?
  
  YES: GO TO 7.
  
  NO: GO TO 19.
PERFORM SELF-DIAGNOSIS (2)
1. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2. Stop the vehicle.
3. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: GO TO 19.
  
  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 11.
  
  NO: Repair or replace error-detected parts, securely lock the harness connector, and GO TO 9.
CHECK DATA MONITOR (2)
1. Erase self-diagnosis result for "ABS" with CONSULT.
2. Turn the ignition switch OFF, and wait 10 seconds or more.
3. Start the engine.
4. Select "ABS" and "DATA MONITOR", check the "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR" with CONSULT.
  NOTE: Set the "DATA MONITOR" recording speed to "10 msec".
5. Read a value (wheel speed) of both normal wheel sensors and error-detecting wheel sensor.
  Regarding the deference at 30 km/h (19 MPH) between the wheel speed detected by the error detecting wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?
  
  YES: GO TO 10.
  
  NO: GO TO 11.
PERFORM SELF-DIAGNOSIS (3)
1. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2. Stop the vehicle.
3. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: GO TO 11.
  
  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 the each wheel sensor pin terminals for damage or loose connection with harness connector.
  Is the inspection result normal?
  
  YES: GO TO 14.
  
  NO: Repair or replace error-detected parts and GO TO 12.
CHECK DATA MONITOR (3)
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Connect wheel sensor harness connector.
3. Erase self-diagnosis result for "ABS" with CONSULT.
4. Turn the ignition switch OFF, and wait 10 seconds or more.
5. Start the engine.
6. Select "ABS" and "DATA MONITOR", check the "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR" with CONSULT.
  NOTE: Set the "DATA MONITOR" recording speed to "10 msec".
7. Read a value (wheel speed) of both normal wheel sensors and error-detecting wheel sensor.
  Regarding the deference at 30 km/h (19 MPH) between the wheel speed detected by the error detecting wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?
  
  YES: GO TO 13.
  
  NO: GO TO 14.
PERFORM SELF-DIAGNOSIS (4)
1. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2. Stop the vehicle.
3. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: GO TO 14.
  
  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 when steering wheel is steered to RH and LH, or center harness in wheel housing is moved.)

MEASUREMENT TERMINAL FOR POWER SUPPLY CIRCUIT

ABS actuator and electric unit (control unit)		Wheel sensor		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E41	9	E27 (Front RH)	1	Existed
	26	E60 (Front LH)
	7	B33 (Rear RH)
	6	B34 (Rear LH)

MEASUREMENT TERMINAL FOR SIGNAL CIRCUIT

ABS actuator and electric unit (control unit)		Wheel sensor		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E41	10	E27 (Front RH)	2	Existed
	5	E60 (Front LH)
	29	B33 (Rear RH)
	27	B34 (Rear LH)

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

ABS actuator and electric unit (control unit)		-	Continuity
Connector	Terminal	-	Continuity
E41	9, 10	Ground	Not existed
	26, 5
	7, 29
	6, 27

Is the inspection result normal?

YES: GO TO 15.

NO: Repair or replace error-detected parts and GO TO 15.

CHECK DATA MONITOR (4)
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Connect wheel sensor harness connector.
3. Erase self-diagnosis result for "ABS" with CONSULT.
4. Turn the ignition switch OFF, and wait 10 seconds or more.
5. Start the engine.
6. Select "ABS" and "DATA MONITOR", check the "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR" with CONSULT.
  NOTE: Set the "DATA MONITOR" recording speed to "10 msec".
7. Read a value (wheel speed) of both normal wheel sensors and error-detecting wheel sensor.
  Regarding the deference at 30 km/h (19 MPH) between the wheel speed detected by the error detecting wheel sensor and the maximum/minimum wheel speed detected by the normal wheel sensors, is the difference within 5%, respectively?
  
  YES: GO TO 16.
  
  NO: GO TO 17.
PERFORM SELF-DIAGNOSIS (5)
1. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2. Stop the vehicle.
3. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: GO TO 17.
  
  NO: INSPECTION END
REPLACE WHEEL SENSOR (2)
1. Replace wheel sensor.
  - Front: Refer to "FRONT WHEEL SENSOR: EXPLODED VIEW ".
  - Rear: Refer to "REAR WHEEL SENSOR: EXPLODED VIEW ".
2. Erase self-diagnosis result for "ABS" with CONSULT.
3. Turn the ignition switch OFF, and wait 10 seconds or more.
4. Start the engine.
5. Select "ABS" and "DATA MONITOR", check the "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR" with CONSULT.
  NOTE: Set the "DATA MONITOR" recording speed to "10 msec".
6. Read a value (wheel speed) of both normal wheel sensors and error-detecting wheel sensor.
  Regarding the deference at 30 km/h (19 MPH) between the wheel speed detected by the error detecting 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: GO TO 19.
PERFORM SELF-DIAGNOSIS (6)
1. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2. Stop the vehicle.
3. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: GO TO 19.
  
  NO: INSPECTION END
REPLACE SENSOR ROTOR
1. Replace sensor rotor.
  - Front: Refer to "FRONT SENSOR ROTOR: EXPLODED VIEW ".
  - Rear: Refer to "REAR SENSOR ROTOR: EXPLODED VIEW ".
2. Erase self-diagnosis result for "ABS".
3. Turn the ignition switch OFF, and wait 10 seconds or more.
4. Start the engine.
5. Drive the vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
6. Stop the vehicle.
7. Perform self-diagnosis for "ABS" with CONSULT.
  Is DTC "C1115" detected?
  
  YES: Replace ABS actuator and electric unit (control unit). Refer to "EXPLODED VIEW ".
  
  NO: INSPECTION END