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Home >> Toyota >> 2005 >> Camry Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics) >> DTC C0273/13, C0274/14, C1361/91: Open/B+ Short Circuit In Abs Motor Relay Circuit & Short Circuit In Abs Motor Fail Safe Relay Circuit >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the brake actuator assy, perform zero point calibration (see CALIBRATION  ).

HINT:

Start the inspection from step 1 when using the hand-held tester and start from step 2 when 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 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.
      ACTIVE TEST

      Item Vehicle Condition / Test Details Diagnostic Note
      ABS MOT RELAY Turns ABS motor relay ON / OFF Operation of motor can be heard

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

    1. NG: Go to step 2 

    OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

  2. INSPECT FUSE (ABS NO.1 FUSE) 
    1. Remove the ABS No.1 fuse from the engine room R/B.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (1 OF 9)

      ABS No.1 fuse 1 Ω or less (Continuity)
      Fig 1: Removing ABS No.1 Fuse From Engine Room R/B
      G02633664Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: CHECK FOR SHORT IN ALL HARNESS AND CONNECTOR CONNECTED TO FUSE AND REPLACE FUSE 

    OK: Go to Next Step. 

  3. CHECK TERMINAL VOLTAGE (ABS CUT RELAY 5 TERMINAL OF ABS R/B) 
    1. Remove the ABS cut relay from the ABS R/B.
    2. Turn the ignition switch to the ON position.
    3. Measure the voltage according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (2 OF 9)

      Terminal 5 - Body ground 10 to 14 V
      Fig 2: Removing ABS Cut Relay From ABS R/B
      G02633665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to Next Step. 

  4. INSPECT ABS CUT RELAY 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (3 OF 9)

      Tester Connection Specified Condition
      Terminal 1 - Terminal 2 About 100 Ω
      Terminal 3 - Terminal 5 10 kΩ or higher (No continuity)
    2. Apply battery voltage between terminals 1 and 2.
    3. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (4 OF 9)

      Tester Connection Specified Condition
      Terminal 3 - Terminal 5 Below 1 Ω (Continuity)
      Fig 3: Measuring Resistance Of ABS Cut Relay
      G02633666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE ABS CUT RELAY 

    OK: Go to Next Step. 

  5. INSPECT ABS R/B (ABS MTR RELAY - ABS CUT RELAY) 
    1. Remove the ABS MTR relay and ABS CUT relay from the ABS R/B.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (5 OF 9)

      Tester Connection Specified Condition
      5 (ABS MTR relay) - 3 (ABS CUT relay) Below 1 Q
      Fig 4: Removing ABS MTR Relay And ABS Cut Relay From ABS R/B
      G02633667Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE ABS R/B 

    OK: Go to Next Step. 

  6. INSPECT ABS MOTOR RELAY 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (6 OF 9)

      Tester Connection Specified Condition
      Terminal 1 - Terminal 2 About 80 Ω
      Terminal 3 - Terminal 5 10 kΩ or higher (No continuity)
    2. Apply battery positive voltage between terminals 1 and 2.
    3. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (7 OF 9)

      Tester Connection Specified Condition
      Terminal 3 - Terminal 5 Below 1 Ω (Continuity)
      Fig 5: Measuring Resistance Of ABS Motor Relay
      G02633668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE ABS MOTOR RELAY 

    OK: Go to Next Step. 

  7. CHECK HARNESS AND CONNECTOR (ABS MOTOR RELAY - SKID CONTROL ECU ASSY) 
    1. Disconnect the skid control ECU connector and ABS MTR relay.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (8 OF 9)

      Tester Connection Specified Condition
      S1-2 (BM)-ABS R/B (3) Below 1 Ω
    3. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (9 OF 9)

      Tester Connection Specified Condition
      S1-2 (BM) - Body ground 10 kΩ or higher
      Fig 6: Disconnecting Skid Control ECU Connector And ABS MTR Relay
      G02633669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to Next Step. 

  8. RECONFIRM DTC 

    HINT:

    These codes are detected when a problem is determined in the brake actuator assy.

    The motor circuit is in the brake actuator assy.

    Therefore, motor circuit inspection and motor unit inspection cannot be performed.

    Be sure to check if the DTC codes are output before replacing the brake actuator assy.

    1. Clear the DTCs (see DTC CHECK/CLEAR  ).
    2. Turn the ignition switch to the ON position.
    3. Are the same DTCs recorded? (see DTC CHECK/CLEAR  )
    1. NO: END 

      HINT:

      These DTCs may be memorized due to a malfunction in the connector terminal.

    YES: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

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