THEFT DETERRENT SYSTEM, Diagnostic DTC:B2761

DTC Code	DTC Name
B2761	Intrusion Sensor Internal Circuit Malfunction

DESCRIPTION

The intrusion 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 the intrusion wave transmission or wave reception, or the intrusion sensor wave transmission or wave reception circuit, the intrusion sensor sends a signal to the main body ECU (instrument panel junction block). The ECU then outputs this DTC.

DTC Code	DTC Detection Condition	Trouble Area
B2761	The intrusion sensor outputs a signal for a sensor malfunction.	Intrusion sensor Map light assembly Main body ECU (Instrument panel junction block)

CAUTION / NOTICE / HINT

Note

As the door control battery is installed between the vehicle battery and main body ECU (instrument panel junction block assembly), 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 (instrument panel junction block assembly) before performing this troubleshooting procedure Click here.

PROCEDURE

CHECK FOR DTC
1. Set the theft deterrent system and check if the same DTC is not output.
  
  OK
  
  DTC B2761 is not output.
OK
USE SIMULATION METHOD TO CHECK Click here

NG
CHECK MAP LIGHT ASSEMBLY
1. Temporarily replace the map light assembly with a new or normally functioning one Click here.
2. Check if DTC B2761 is not output.
  
  OK
  
  DTC B2761 is not output.
OK
END (MAP LIGHT ASSEMBLY IS FAULTY)

NG
REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)