Inspection Procedure

INSPECT SKID CONTROL ECU CONNECTOR (+BS TERMINAL VOLTAGE)
1. Disconnect the skid control ECU connector.
2. Measure the voltage between terminals +BS (S1-2) and GND (S1-1, 23) of skid control ECU harness side connector.
  
  Fig 1: Measuring Voltage Between Terminals +BS (S1-2) And GND (S1-1,23) Of Skid Control ECU
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Voltage: 10 - 14 V
1. NG: Go to step 4
2. OK: Go to next step.
RECONFIRM DTC
1. Check the DTC ( PRE-CHECK ).
  OK:
  
  Normal code
1. OK: END
2. NG: Go to next step.
INSPECT CONTACT CONDITION
1. Inspect the contact condition of the each connector from engine room R/B to skid control ECU.
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: CHECK AND REPLACE BRAKE ACTUATOR ASSY (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
INSPECT FUSE (ABS No.1 FUSE)
1. Remove ABS No.1 fuse from the engine room R/B.
  
  Fig 2: Locating ABS No.1 Fuse
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check continuity of ABS No.1 fuse.
  OK:
  
  Continuity
1. NG: INSPECT FOR SHORT CIRCUIT IN ALL HARNESS AND COMPONENTS CONNECTED TO ABS NO. 1 FUSE
2. OK: Go to next step.
INSPECT SKID CONTROL ECU CONNECTOR (GND TERMINAL CONTINUITY)
1. Measure resistance between terminal GND (S1-1, 23) of skid control ECU harness side connector and body ground.
  Resistance: 1 Ω or less
  
  Fig 3: Measuring Resistance Between Terminal GND (S1-1,23) Of Skid Control ECU
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: CHECK AND REPAIR HARNESS AND CONNECTOR (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
2. OK: CHECK AND REPLACE BRAKE ACTUATOR ASSY (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )