THEFT DETERRENT SYSTEM, Diagnostic DTC:B2762, B2764

DTC Code	DTC Name
B2762	Intrusion Sensor Signal Circuit Malfunction
B2764	Short to GND in Intrusion Sensor Signal Circuit

DESCRIPTION

The intrusion sensor conducts a self-diagnosis immediately after power is supplied to the sensor (when the theft deterrent system is set).
If a malfunction is detected in the IOUT line, the main body ECU (instrument panel junction block) stores DTC B2762.
B2764 DTC is stored when terminal IOUT of the intrusion sensor has not received a signal for 5 seconds or more.

DTC Code	DTC Detection Condition	Trouble Area
B2762	After a normal/trouble signal is output from the intrusion sensor as result of self-diagnosis, either of the following malfunctions is detected: The IOUT line circuit is open. Reception of signals other than a normal/trouble signal.	Intrusion sensor Map light assembly Main body ECU (Instrument panel junction block) Harness or connector
B2764	After normal/trouble signal is output from the intrusion sensor as result of self-diagnosis, the following malfunction is detected: Terminal IOUT of the intrusion sensor has not received signal for 5 seconds or more.	Intrusion sensor Map light assembly Main body ECU (Instrument panel junction block) Harness or connector

DTC Code

DTC Detection Condition

Trouble Area

B2762

After a normal/trouble signal is output from the intrusion sensor as result of self-diagnosis, either of the following malfunctions is detected:

The IOUT line circuit is open.
Reception of signals other than a normal/trouble signal.

Intrusion sensor
Map light assembly
Main body ECU (Instrument panel junction block)
Harness or connector

B2764

After normal/trouble signal is output from the intrusion sensor as result of self-diagnosis, the following malfunction is detected:

Terminal IOUT of the intrusion sensor has not received signal for 5 seconds or more.

Intrusion sensor
Map light assembly
Main body ECU (Instrument panel junction block)
Harness or connector

WIRING DIAGRAM


*1	Intrusion Sensor
*2	Map Light Assembly
*3	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 HARNESS AND CONNECTOR (MAP LIGHT - MAIN BODY ECU [INSTRUMENT PANEL JUNCTION BLOCK] AND BODY GROUND)

Text in Illustration
*1	Front view of wire harness connector (to Map Light)
*2	Front view of wire harness connector (to Main Body ECU [Instrument Panel Junction Block])

Disconnect the K13 light connector.
Disconnect the D80 ECU connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
K13-6 (IOUT) - D80-7 (ISIF)	Always	Below 1 Ω
K13-6 (IOUT) or D80-7 (ISIF) - Body ground	Always	10 kΩ or higher
K13-11 (GND) - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK MAP LIGHT ASSEMBLY
1. Temporarily replace the map light assembly with a new or normally functioning one Click here.
2. Check if DTC B2764 is not output.
  
  OK
  
  DTC B2762 or B2764 is not output.
OK
END (MAP LIGHT ASSEMBLY IS FAULTY)

NG
REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)