DTC    B2761    Intrusion Sensor Internal Circuit Malfunction


DESCRIPTION

The intrusion sensor (theft warning sensor) detects any moving object by using ultrasonic waves and outputs the signals to inform the multiplex network body ECU of an intrusion, so that the theft deterrent system can set off the alarm.
When the theft deterrent system is switching to the arming preparation state, the intrusion sensor is supplied with S+B by the multiplex network body ECU. This causes the theft deterrent system to set off the alarm when the signal is output from the intrusion sensor in a situation such as when the window glass is broken.
The intrusion sensor (theft warning sensor) conducts a self-diagnosis immediately after the power is supplied to the sensor (when the theft deterrent system is set.)
If a malfunction is detected in intrusion wave transmission/wave reception or the intrusion sensor's transmission/wave reception circuit, the intrusion sensor sends the signal to the multiplex network body ECU. The multiplex network body ECU then outputs this DTC.

DTC No.
DTC Detection Condition
Trouble Area
B2761
Intrusion sensor outputs signal for sensor malfunction.
  1. Intrusion sensor (Theft warning sensor)
  2. Multiplex network body ECU

WIRING DIAGRAM


B109012E01


INSPECTION PROCEDURE

1.CHECK FOR DTCS

  1. Set the theft deterrent system and check if the same DTC is output.

    HINT:
    It is possible during the last diagnosis mode that data transmission and reception were not performed normally due to the vehicle interior condition.

    OK:
    DTC B2761 is not output.



NG
Go to step 2
OK

END 

2.CHECK THEFT WARNING SENSOR SUB-ASSEMBLY (PERSONAL LIGHT ASSEMBLY)

  1. Check that the DTC disappears when a normally functioning theft warning sensor sub-assembly is installed.

    OK:
    DTC B2761 is not output.



NG
REPLACE INSTRUMENT PANEL J/B ASSEMBLY
OK

REPLACE PERSONAL LIGHT ASSEMBLY