Inspection Procedure

1. Check tire size and condition of all 4 wheels (See INSPECTION ).

   OK: 

   All 4 tires are the same size. 

NG: REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME IN SIZE 

OK: Go to Next Step 

1. Inspect the front speed sensor rotor (See INSPECTION PROCEDURE  ), and rear speed sensor rotor (See INSPECTION PROCEDURE  ).

   OK: 

   No scratches, missing teeth or foreign matter on the rotors. 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   OK	A
   NG (Front)	B
   NG (Rear for 2WD)	C
   NG (Rear for 4WD)	D

B: REPLACE FRONT DRIVE SHAFT ASSEMBLY  (See REMOVAL )

C: REPLACE REAR AXLE HUB AND BEARING ASSEMBLY  (See REMOVAL )

D: REPLACE REAR DRIVE SHAFT ASSEMBLY  (See REMOVAL )

A: Go to Next Step 

1. Front
   1. Make sure that there is no looseness at the locking part and connecting part of connector.
   2. Disconnect the speed sensor connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S2-2 (FL+) - S2-1 (FL-)	0.6 to 2.5 kΩ

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S3-2 (FR+) - S3-1 (FR-)	0.6 to 2.5 kΩ

      Fig 1: Identifying Front Speed Sensor Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S2-2 (FL+) - Body ground	10 kΩ or higher
      S2-1 (FL-) - Body ground	10 kΩ or higher

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S3-2 (FR+) - Body ground	10 kΩ or higher
      S3-1 (FR-) - Body ground	10 kΩ or higher

2. Rear for 2WD
   1. Disconnect the skid control sensor connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      (S25-1) - (S25-2)	0.9 to 2.1 kΩ

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      (S26-1) - (S26-2)	0.9 to 2.1 kΩ

      Fig 2: Identifying Skid Control Sensor Connector (2WD)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      (S25-1) - Body ground	10 kΩ or higher
      (S25-2) - Body ground	10 kΩ or higher

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      (S26-1) - Body ground	10 kΩ or higher
      (S26-2) - Body ground	10 kΩ or higher

3. Rear for 4WD
   1. Remove the seat cushion seatback.
   2. Disconnect the speed sensor connector S25 or S26.
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S25-1 (RL+) - S25-2 (RL-)	0.9 to 1.3 Ω

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S26-1 (RR+) - S26-2 (RR-)	0.9 to 1.3 Ω

      Fig 3: Identifying Skid Control Sensor Connector (4WD)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Measure the resistance according to the value(s) in the table below

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S25-1 (RL+) - Body ground	1 MΩ or higher
      S25-2 (RL-) - Body ground	1 MΩ or higher

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S26-1 (RR+) - Body ground	1 MΩ or higher
      S26-2 (RR-) - Body ground	1 MΩ or higher

      Result 

      RESULT REFERENCE TABLE
      
      

      Result	Proceed to
      OK	A
      NG (Front)	B
      NG (Rear)	C

      NOTE: Check the speed sensor signal after replacement (See TEST MODE PROCEDURE  ).

B: REPLACE FRONT SPEED SENSOR  (See REMOVAL  )

C: REPLACE REAR SPEED SENSOR 

A: Go to Next Step 

1. Front
   1. Disconnect the skid control ECU connector and the front speed sensor connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S1 - 18 (FL+) - S2-2 (FL+)	Below 1 Ω
      S1 - 4 (FL-) - S2-1 (FL-)	Below 1 Ω

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S1 - 3 (FR+) - S3-2 (FR+)	Below 1 Ω
      S1 - 17 (FR-) - S3-1 (FR-)	Below 1 Ω

   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S1 - 18 (FL+) - Body ground	10 kΩ or higher
      S1 - 4 (FL-) - Body ground	10 kΩ or higher

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S1 - 3 (FR+) - Body ground	10 kΩ or higher
      S1 - 17 (FR-) - Body ground	10 kΩ or higher

2. Rear
   1. Disconnect the skid control ECU connector and the skid control sensor connector.
      Fig 4: Identifying Skid Control ECU & Front Speed Sensor Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S1 - 20 (RL+) - S25-1 (RL+)	Below 1 Ω
      S1 - 6 (RL-) - S25-2 (RL-)	Below 1 Ω

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S1 - 5 (RR+) - S26-1 (RR+)	Below 1 Ω
      S1 - 19 (RR-) - S26-2 (RR-)	Below 1 Ω

   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      LH 

      STANDARD RESISTANCE SPECIFICATION TABLE LH
      
      

      Tester Connection	Specified Condition
      S1 - 20 (RL+) - Body ground	10 kΩ or higher
      S1 - 6 (RL-) - Body ground	10 kΩ or higher

      RH 

      STANDARD RESISTANCE SPECIFICATION TABLE RH
      
      

      Tester Connection	Specified Condition
      S1 - 5 (RR+) - Body ground	10 kΩ or higher
      S1 - 19 (RR-) - Body ground	10 kΩ or higher

      Fig 5: Identifying Skid Control ECU & Skid Control Sensor Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT) 

OK: Go to Next Step 

1. Clear the DTCs (See DTC CHECK/CLEAR  ).
2. Drive the vehicle at a speed of approximately 20 mph (32 km/h) or more for 60 seconds or more.
3. Check if the same DTC is detected (See DTC CHECK/CLEAR  ).

   HINT:

   Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.

   RESULT REFERENCE
   
   

   Result	Proceed to
   DTC is output	A
   DTC is not output	B

B: END 

A: REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL  )