Dtc B2762 Intrusion Sensor Signal Circuit Malfunction

Securities. Lexus Is250, Is220D. Gse20 Ale20
Theft Deterrent. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - PERSONAL LIGHT ASSEMBLY)

CHECK OPERATION OF INTRUSION SENSOR

DTC B2762 Intrusion Sensor Signal Circuit Malfunction


DESCRIPTION

  1. The intrusion sensor conducts 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 - ISIF line, the main body ECU RH outputs this DTC.

DTC No.
DTC Detection Condition
Trouble Area
B2762
After normal/trouble signal is output from intrusion sensor as result of self-diagnosis, following malfunctions are detected:
  1. IOUT - ISIF line circuit is open
  2. Reception of signals other than normal/trouble signal
  1. Intrusion sensor
  2. Wire harness
  3. Main body ECU RH (Cowl side J/B RH)

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Theft Deterrent.Theft Deterrent System (W/ Intrusion Sensor).
Dtc
  B2762  Intrusion Sensor Signal Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - PERSONAL LIGHT ASSEMBLY)


    Lexus Is250, Is220D. Gse20 Ale20.Theft Deterrent.Theft Deterrent System (W/ Intrusion Sensor).
Dtc
  B2762  Intrusion Sensor Signal Circuit Malfunction
  1. Disconnect the J75 ECU connector and R5 light connector.

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

    Standard resistance:
    Symbol (Tester Connection)
    Specified Condition
    ISIF (J75-13) - IOUT (R5-25)
    Below 1 Ω
    ISIF (J75-13) - Body ground
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK OPERATION OF INTRUSION SENSOR
  1. Temporarily replace the personal light assembly with a new or normally functioning sensor.

  1. Check if the DTC B2762 is not output.

    OK:
    DTC B2762 is not output.


NG
REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)
OK

REPLACE PERSONAL LIGHT ASSEMBLY (INTRUSION SENSOR)