THEFT DETERRENT SYSTEM, Diagnostic DTC:B2764

DTC Code DTC Name
B2764 Short to GND in Intrusion Sensor Signal Circuit

DESCRIPTION


DTC No. DTC Detection Condition Trouble Area
B2764

After normal/trouble signal is output from intrusion sensor (theft warning ultrasonic sensor) as result of self-diagnosis, following malfunctions are detected:


  1. Short to ground in ISIF line circuit

  2. Reception of signals other than normal/trouble signal

  • Intrusion sensor (theft warning ultrasonic sensor)

  • Main body ECU (multiplex network body ECU)

  • Wire harness or connector

WIRING DIAGRAM

Refer to DTC B2762 Click here.

CAUTION / NOTICE / HINT

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR) - BODY GROUND)


    1. Disconnect the H9 main body ECU (multiplex network body ECU) connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H9-12 (ISIF) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. REPLACE INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR)


    1. Replace the intrusion sensor (theft warning ultrasonic sensor) Click here.


    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs Click here.

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

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

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

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

    6. Check for DTCs Click here.

      OK
      DTC B2764 is not output.

    OK

    END (INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR) WAS DEFECTIVE)

    NG

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