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Home >> Lexus >> 2005 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 450 (Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics)) >> Abs With EBD & BA & TRAC & VSC System >> DTC C0278/11, C0279/12: Open/Short Circuit In Abs Solenoid Relay Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT SKID CONTROL ECU CONNECTOR (+BS TERMINAL VOLTAGE) 
    1. Disconnect the brake actuator connector.
    2. Measure the voltage between terminals +BS and GND of the brake actuator harness side connector.

      OK: 

      Voltage: 10 to 14 V 

      Fig 1: Identifying Brake Actuator Connector Terminal
      G02629250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step   2 
    2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION 
  2. INSPECT FUSE (ABS2 FUSE) 
    1. NG: CHECK FOR SHORT IN ALL HARNESS AND CONNECTOR CONNECTED FUSE AND REPLACE FUSE 
    2. OK: GO TO NEXT STEP 
  3. INSPECT SKID CONTROL ECU CONNECTOR (GND TERMINAL CONTINUITY) 
    1. Disconnect the brake actuator connector.
    2. Measure the resistance between terminal GND of the skid control ECU harness side connector and the body ground.

      OK: 

      Resistance: 1 Ω or less 

    Fig 2: Identifying Brake Actuator Connector Terminal
    G02629251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  ) 
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