Dtc B2761 Intrusion Sensor Internal Circuit Malfunction

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

REPLACE INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR)

CHECK FOR DTC

DTC B2761 Intrusion Sensor Internal Circuit Malfunction


DESCRIPTION

  1. The intrusion sensor (theft warning ultrasonic sensor) conducts self-diagnosis immediately after power is supplied to the sensor (when the theft deterrent system is set).
    If a problem is detected in the signals transmitted and received by the intrusion sensor (theft warning ultrasonic sensor), or if the transmission or reception circuits malfunction, the intrusion sensor (theft warning ultrasonic sensor) transmits a signal to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) then stores this DTC.

DTC Code
DTC Detection Condition
Trouble Area
B2761
Intrusion sensor (theft warning ultrasonic sensor) outputs signal for sensor malfunction
  1. Intrusion sensor (theft warning ultrasonic sensor)
  2. Main body ECU (multiplex network body ECU)

INSPECTION PROCEDURE

NOTICE:
  1. If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.
  2. w/ Door Control Battery:
    As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (multiplex network body ECU) before performing this troubleshooting procedure (Click here).
1.CHECK FOR DTC

  1. Clear the DTCs (Click here).

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

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

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

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

  1. Check for DTCs (Click here).

    OK:
    DTC B2761 is not output.


NG
Go to step 2
OK

USE SIMULATION METHOD TO CHECK (Click here)

2.REPLACE INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR)

  1. Temporarily replace the intrusion sensor (theft warning ultrasonic sensor) with a new or normally functioning one (Click here).


NEXT


3.CHECK FOR DTC

  1. Clear the DTCs (Click here).

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

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

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

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

  1. Check for DTCs (Click here).

    OK:
    DTC B2761 is not output.
    Result
    Result
    		Proceed to
    DTC B2761 is not output
    		A
    DTC B2761 is output (for LHD)
    		B
    DTC B2761 is output (for RHD)
    		C


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

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

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