Inspection Procedure

INSPECT SKID CONTROL ECU CONNECTOR (+BS TERMINAL VOLTAGE)

Fig 1: Measuring Voltage Terminal + BS Or GND
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.
  Voltage: 10-14 V
1. NG: Go to 4
2. OK: Go to next step
RECONFIRM PTC
1. Check the DTC (See 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)

Fig 2: Checking Fuse (ABS No.1 Fuse)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Remove ABS No.1 fuse from the engine room R/B.
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)

Fig 3: Measuring Resistance Terminal Gnd To ECU Harness
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Measure resistance between terminal GND (S1-1, 23) of skid control ECU harness side connector and body ground.
  Resistance: 1 Ω. or less
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 )