THEFT DETERRENT SYSTEM, Diagnostic DTC:B2761

DTC Code	DTC Name
B2761	Intrusion Sensor Internal Circuit Malfunction

DESCRIPTION

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 certification ECU. The certification ECU then stores this DTC.

DTC Code	DTC Detection Condition	Trouble Area
B2761	Intrusion sensor (theft warning ultrasonic sensor) outputs signal for sensor malfunction	Map light assembly Intrusion sensor (theft warning ultrasonic sensor) Certification ECU

INSPECTION PROCEDURE

Note

If the certification ECU is replaced, refer to the Service Bulletin.

PROCEDURE

CHECK FOR DTC
1. Clear the DTCs Click here.
2. Turn the engine 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 B2761 is not output.
NG
REPLACE MAP LIGHT ASSEMBLY Click here

OK

USE SIMULATION METHOD TO CHECK Click here
REPLACE MAP LIGHT ASSEMBLY
1. Temporarily replace the map light assembly with a new or normally functioning one Click here.
NEXT
CHECK FOR DTC
1. Clear the DTCs Click here.
2. Turn the engine 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 B2761 is not output.
NG
REPLACE INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR) Click here

OK

END (MAP LIGHT ASSEMBLY WAS DEFECTIVE)
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
CHECK FOR DTC
1. Clear the DTCs Click here.
2. Turn the engine 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 B2761 is not output.
NG
REPLACE CERTIFICATION ECU

OK

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