Inspection Procedure

HINT:

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

1. PERFORM ACTIVE TEST BY HAND-HELD TESTER (ABS MOTOR RELAY) 
   1. Check the operation sound of the ABS motor individually when operaing it with the hand-held tester.

      OK: 

      The operation sound of the ABS motor should be heard. 

   1. OK: CHECK AND REPLACE BRAKE ACTUATOR ASSY 
   2. NG: GO TO NEXT STEP. 
2. INSPECT SKID CONTROL ECU CONNECTOR (+BM TERMINAL VOLTAGE) 
   1. Disconnect the skid control ECU connector.
   2. Measure the voltage between terminals +BM (24) and GND (1, 23) of skid control ECU harness side connector.

      Voltage: 10 - 14 V 

      Fig 1: Identifying Skid Control ECU Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: CHECK AND REPLACE BRAKE ACTUATOR ASSY 
   2. NG: GO TO NEXT STEP. 
3. INSPECT FUSE (ABS No.2 FUSE) 
   1. Remove ABS No.2 fuse from the engine room R/B.
   2. Check continuity of ABS No.2 fuse.

      OK: 

      Continuity 

      Fig 2: Identifying ABS No.2 Fuse

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE INSPECT FOR SHORT CIRCUIT IN ALL HARNESS AND COMPONENTS CONNECTED TO ABS NO. 2 FUSE 
   2. OK: GO TO NEXT STEP. 
4. INSPECT SKID CONTROL ECU CONNECTOR (GND TERMINAL CONTINUITY) 
   1. Measure resistance between terminal GND (1,23) of skid control ECU harness side connector and body ground.

      Resistance: 1 Ω or less 

      Fig 3: Identifying Skid Control GND Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: CHECK AND REPAIR HARNESS AND CONNECTOR 
   2. OK: CHECK AND REPLACE BRAKE ACTUATOR ASSY (See  TERMINALS OF ECU  )