Inspection Procedure

HINT:

Start the inspection from step 1 when using the hand-held tester and start from step  2 when not using 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 for operation sound of the ABS motor individually when operating it with the hand-held tester.
      Fig 1: ABS Motor Relay Operation Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   1. The operation sound of the ABS motor should be heard. 

   OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

   NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK  ).

   NG: Go to next step. 

2. INSPECT HARNESS AND CONNECTOR (GND2 OF SKID CONTROL ECU - BODY GROUND) 
   1. Disconnect the skid control ECU connector S1.
      Fig 2: Disconnecting Skid Control ECU (GND2)

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

      Standard 

      Fig 3: Measuring Resistance Between GND2 & Body Ground Specifications Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next step. 

3. RECONFIRM DTC 
   1. Clear the DTCs. (see PRE-CHECK  )
   2. Turn the ignition switch to the ON position.
   3. Are the same DTCs recorded? (see PRE-CHECK  )

   NO: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE   ) 

   YES: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

   NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK  ).