Inspection Procedure

HINT:

Start the inspection from step  1 when using the hand-held tester and start from step  2 when not using the hand-held tester.

1. PERFORM ACTIVE TEST BY HAND-HELD TESTER (ABS MOTOR RELAY OPERATION) 
   1. Connect the hand-held tester to the DLC3.
   2. Start the engine.
   3. Select the ACTIVE TEST mode on the hand-held tester.
   4. Check the operation sound of the ABS motor individually when operating it with the hand-held tester.
      VEHICLE CONDITION / TEST DETAILS CHART
      
      

      Item	Vehicle Condition / Test Details	Vehicle Condition / Test Details
      ABS MOT RELAY	ABS motor relay / ON or OFF	ON: Motor relay ON

      OK: The operation sound of the ABS motor should be heard. 

   1. NG: Go to step 2 
   2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  ) 
2. INSPECT FUSE (ABS2 FUSE) 
   1. Remove ABS2 fuse from the FL BLOCK.
   2. Check continuity of ABS2 fuse.

      Standard: 

      ABS FUSE CHART
      
      

      ABS No.1 fuse

      Below Ml (Continuity)

      Fig 1: Removing ABS Fuse From FL Block

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: CHECK FOR SHORT IN ALL HARNESS AND CONNECTOR CONNECTED TO FUSE AND REPLACE FUSE 
   2. OK: GO TO NEXT STEP. 
3. CHECK TERMINAL VOLTAGE (VSC MOTOR RELAY 5 TERMINAL OF ABS R/B) 
   1. Remove the VSC MTR relay from the ABS R/B.
   2. Turn the ignition switch to the ON position.
   3. Measure the voltage according to the value (s) in the table below.

      Standard: 

      SPECIFICATION TESTER CONNECTION
      
      

      Tester Connection	Specified Condition
      Terminals 5 - Body ground	10 to 14 V

      Fig 2: Checking Terminal Voltage (VSC Motor Relay Terminal Of ABS R/B)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR CONNECTOR REPLACE HARNESS OR 
   2. OK: GO TO NEXT STEP. 
4. INSPECT VSC MOTOR RELAY 
   1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFICATION TESTER CONNECTION
      
      

      Tester Connection	Connection	Specified resistance
      3 - 5	Always	10 kΩ or higher (No continuity)
      3 - 5	Apply B+ between terminal 1 and 2	Below 1 Ω

      Fig 3: Inspecting VSC Motor Relay

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE VSC MOTOR RELAY 
   2. OK: GO TO NEXT STEP. 
5. INSPECT VSC CUT RELAY 
   1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFICATION TESTER CONNECTION
      
      

      Tester Connection	Connection	Specified resistance
      3 - 5	Always	10 kΩ or higher (No continuity)
      3 - 5	Apply B+ between terminal 1 and 2	Below 1 Ω

      Fig 4: Inspecting VSC Cut Relay

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NO: REPLACE VSC CUT RELAY 
   2. OK: GO TO NEXT STEP. 
6. CHECK HARNESS AND CONNECTOR (VSC MOTOR RELAY - SKID CONTROL ECU) 
   1. Disconnect the skid control ECU connector.
   2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFICATION TESTER CONNECTION
      
      

      Tester Connection	Specified Condition
      S27-2 (BM) - 3 (ABS R/B)	Below 1 Ω

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

      Standard: 

      SPECIFICATION TESTER CONNECTION
      
      

      Tester Connection	Specified Condition
      S27-2 BM - Body ground	10 kΩ or higher

      Fig 5: Checking Harness And Connector (VSC Motor Relay - Skid Control ECU)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: GO TO NEXT STEP. 
7. CHECK HARNESS AND CONNECTOR (VSC MOTOR RELAY - SKID CONTROL RELAY) 
   1. Remove the ABS motor relay and skid control relay from ABS R/B.
   2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFICATION
      
      

      Tester Connection	Specified Condition
      5 (ABS MOTOR Relay) - 3 (Skid Control Relay)	Below 1 Ω

      Fig 6: Removing ABS Motor Relay And Skid Control Relay From ABS R/B

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  )