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 as result of self-diagnosis, following malfunctions are detected:


  1. ISIF line circuit is shorted to ground

  2. Reception of signals other than normal/trouble signal

  • Intrusion sensor (theft warning radar sensor)

  • Main body ECU (multiplex network body ECU)

  • Wire harness or connector

WIRING DIAGRAM

Refer to DTC B2762 Click here.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - MAIN BODY ECU)


    1. Disconnect the E121 main body ECU (multiplex network body ECU) and O8 map light assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E121-12 (ISIF) - O8-4 (IOUT) Always Below 1 Ω
      O8-7 (GND) - Body ground Always Below 1 Ω
      E121-12 (ISIF) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. REPLACE INTRUSION SENSOR (THEFT WARNING RADAR SENSOR)


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


    NEXT

  3. CHECK FOR DTC


    1. Check if DTC B2764 is not output Click here.

      OK
      DTC B2764 is not output.

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    OK

    END (INTRUSION SENSOR (THEFT WARNING RADAR SENSOR) WAS FAULTY)