THEFT DETERRENT SYSTEM, Diagnostic DTC:B2769

DTC Code DTC Name
B2769 Tilt Sensor Signal Circuit Malfunction

DESCRIPTION

The yaw rate and acceleration sensor conducts self-diagnosis immediately after power is supplied to the sensor (when the theft deterrent system is set).

If a malfunction is detected in the CSIF-GCS line, the main body ECU (multiplex network body ECU) stores this DTC.

DTC No. DTC Detection Condition Trouble Area
B2769

After normal/trouble signal is output from yaw rate and acceleration sensor as result of self-diagnosis, the following malfunctions are detected:


  • CSIF-GCS line circuit is open

  • Reception of signals other than normal/trouble signal

  • Yaw rate and acceleration sensor

  • Main body ECU (multiplex network body ECU)

  • Wire harness or connector

WIRING DIAGRAM

A003YY2E02

INSPECTION PROCEDURE

Note

When replacing the yaw rate and acceleration sensor, perform zero point calibration Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - YAW RATE AND ACCELERATION SENSOR)


    1. Disconnect the H17 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the H87 yaw rate and acceleration sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H17-6 (GCS) - H87-5 (CSIF) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. REPLACE YAW RATE AND ACCELERATION SENSOR


    1. Replace the yaw rate and acceleration sensor Click here.


    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Turn the power 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 B2769 is not output.

    NG

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

    OK

    END (YAW RATE AND ACCELERATION SENSOR WAS DEFECTIVE)