THEFT DETERRENT SYSTEM, Diagnostic DTC:B2768

DTC Code DTC Name
B2768 Tilt Sensor Internal Circuit Malfunction

DESCRIPTION

This DTC is stored when one of the following is detected: 1) a tilt sensor (theft warning tilt sensor)*1 or tilt sensor (yaw rate and acceleration sensor)*2 power supply malfunction; 2) a tilt sensor (theft warning tilt sensor)*1 or tilt sensor (yaw rate and acceleration sensor)*2 open malfunction; or 3) an EEPROM malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2768 Tilt Sensor Internal Circuit Malfunction

    If one of the following is detected:

  • Tilt sensor (theft warning tilt sensor)*1 or tilt sensor (yaw rate and acceleration sensor)*2 power supply malfunction

  • Tilt sensor (theft warning tilt sensor)*1 or tilt sensor (yaw rate and acceleration sensor)*2 open malfunction

  • EEPROM malfunction

  • Tilt sensor (Theft warning tilt sensor)*1

  • Tilt sensor (Yaw rate and acceleration sensor)*2

  • Main body ECU (Multiplex network body ECU)

CAUTION / NOTICE / HINT

Note


  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

  • When replacing the tilt sensor (yaw rate and acceleration sensor), perform zero point calibration.*

    Click here


    • *: for TFT Meter Type

  • The vehicle battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before proceeding with troubleshooting, perform an on-vehicle inspection and confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.*

    Click here


    • *: w/o Canister Pump Module with Door Ajar Warning Buzzer Function

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs

    2. Turn the engine switch on (IG), then off.

    3. Set the theft deterrent system to "ARMED STATE".

      Click here

    4. Check that the security indicator light changes from illuminated to blinking.

    5. Set the theft deterrent system to "DISARMED STATE".

      Click here

    6. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      OK
      DTC B2768 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. REPLACE TILT SENSOR


    1. Temporarily replace the tilt sensor (theft warning tilt sensor) with a new or known good one.*1

      Click here

    2. Temporarily replace the tilt sensor (yaw rate and acceleration sensor) with a new or known good one.*2

      Click here


      • *1: for Optitron Meter Type

      • *2: for TFT Meter Type

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs

    2. Turn the engine switch on (IG), then off.

    3. Set the theft deterrent system to "ARMED STATE".

      Click here

    4. Check that the security indicator light changes from illuminated to blinking.

    5. Set the theft deterrent system to "DISARMED STATE".

      Click here

    6. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      OK
      DTC B2768 is not output.
      Result
      Result Proceed to
      OK (for Optitron Meter Type) A
      OK (for TFT Meter Type) B
      NG C

    A

    END (TILT SENSOR (THEFT WARNING TILT SENSOR) WAS DEFECTIVE)

    B

    END (TILT SENSOR (YAW RATE AND ACCELERATION SENSOR) WAS DEFECTIVE)

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here