Dtc B2763 Intrusion Sensor +B Circuit Malfunction (Gnd Short)

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 MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

DTC B2763 Intrusion Sensor +B Circuit Malfunction (GND Short)


DESCRIPTION

  1. This DTC is output when the S+B line, which is the power supply line to the sensor, is shorted.

DTC No.
DTC Detection Condition
Trouble Area
B2763
S+B line is shorted
  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 B2763 Intrusion Sensor +B Circuit Malfunction (Gnd Short)


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 B2763 Intrusion Sensor +B Circuit Malfunction (Gnd Short)

  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
    S+B (J75-11) - S+B (R5-5)
    		Below 1 Ω
    S+B (J75-11) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

  1. Reconnect J75 ECU connector.

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

    Standard voltage:
    Tester Connection
    		Specified Condition
    R5-5 - Body ground
    		10 to 14 V


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

REPLACE PERSONAL LIGHT ASSEMBLY (INTRUSION SENSOR)