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Home >> Toyota >> 2006 >> Camry Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics) >> DTC C0273/13 Open Circuit In Abs Motor Relay Circuit: DTC C0274/14 B+ Short Circuit In Abs Motor Relay Circuit: DTC C1361/91 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.
    ABS MOTOR RELAY OPERATION

    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. 

    NG: Go to step 2 

    OK: REPLACE BRAKE ACTUATOR ASSY (See step 3 in  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 FUSE (ABS NO. 1 FUSE)  .
      3. Fig 1: Identifying ABS No. 1 Fuse
      G04390038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard: 

    FUSE (ABS NO. 1 FUSE)

    ABS No.1 fuse 1 or less (Continuity)

    NG: CHECK FOR SHORT IN ALL HARNESS AND CONNECTORS 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 TERMINAL VOLTAGE (ABS CUT RELAY 5 TERMINAL OF ABS R/B)  .

    Standard: 

    TERMINAL VOLTAGE (ABS CUT RELAY 5 TERMINAL OF ABS R/B)

    Terminal 5 - Body ground 10 to 14 V
    Fig 2: Checking Terminal Voltage (ABS Cut Relay 5 Terminal Of ABS R/B
    G04390039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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 ABS CUT RELAY  .
      Fig 3: Inspecting ABS Cut Relay
      G04390040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      ABS CUT RELAY (1 OF 2)

      Tester Connection Specified Condition
      Terminal 1 - Terminal 2 About 100
      Terminal 3 - Terminal 5 10 k or higher (No continuity)
    2. Apply battery voltage between terminals 1 and 2.
    3. Measure the resistance according to the value(s) in ABS CUT RELAY (2 OF 2)  .

    Standard: 

    ABS CUT RELAY (2 OF 2)

    Tester Connection Specified Condition
    Terminal 3 - Terminal 5 Below 1 (Continuity)

    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 ABS R/B (ABS MTR RELAY - ABS CUT RELAY)  .
      3. Fig 4: Inspecting ABS R/B (ABS MTR Relay - ABS Cut Relay)
      G04390041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard: 

    ABS R/B (ABS MTR RELAY - ABS CUT RELAY)

    Tester Connection Specified Condition
    5 (ABS MTR relay) - 3 (ABS CUT relay) Below 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 ABS MOTOR RELAY (1 OF 2)  .
      Fig 5: Inspecting ABS Motor Relay
      G04390042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      ABS MOTOR RELAY (1 OF 2)

      Tester Connection Specified Condition
      Terminal 1 - Terminal 2 About 80
      Terminal 3 - Terminal 5 10 k or higher (No continuity)
    2. Apply battery positive voltage between terminals 1 and 2.
    3. Measure the resistance according to the value(s) in ABS MOTOR RELAY (2 OF 2)  .

    Standard: 

    ABS MOTOR RELAY (2 OF 2)

    Tester Connection Specified Condition
    Terminal 3 - Terminal 5 Below 1 (Continuity)

    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 ABS MOTOR RELAY - SKID CONTROL ECU ASSY (1 OF 2)  .
      Fig 6: Identifying Skid Control ECU And ABS MTR Relay Terminals
      G04390043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      ABS MOTOR RELAY - SKID CONTROL ECU ASSY (1 OF 2)

      Tester Connection Specified Condition
      S1-2 (BM) - ABS R/B (3) Below 1
    3. Measure the resistance according to the value(s) in ABS MOTOR RELAY - SKID CONTROL ECU ASSY (2 OF 2)  .

    Standard: 

    ABS MOTOR RELAY - SKID CONTROL ECU ASSY (2 OF 2)

    Tester Connection Specified Condition
    S1-2 (BM) - Body ground 10 k or higher

    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  )

    NO: END 

    HINT:

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

    YES: REPLACE BRAKE ACTUATOR ASSY (See step 3 in REPLACEMENT  ) 

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