LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnostics >> DTC C1251/51: Pump Motor Is Locked/Open Circuit In Pump Motor Ground >> Inspection Procedure

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 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 the operation sound of the ABS motor individually when operating it with the hand-held tester.
      VEHICLE CONDITION / TEST DETAILS CHART

      Item Vehicle Condition / Test Details Vehicle Condition / Test Details
      ABS MOT RELAY ABS motor relay / ON or OFF ON: Motor relay ON

      OK: The operation sound of the ABS motor should be heard. 

    1. NG: Go to step 2 
    2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  ) 
  2. INSPECT HARNESS AND CONNECTOR (GND2 OF SKID CONTROL ECU AND BODY GROUND) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFICATION TESTER CONNECTION

      Tester Connection Specified Condition
      S27-1 (GND2) - Body ground Below 1 Ω
      Fig 1: Inspecting Harness And Connector GND2 Of Skid Control ECU And Body Ground)
      G02908678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  )