Dtc B2769 Tilt Sensor Signal Circuit Malfunction

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - YAW RATE SENSOR)

CHECK YAW RATE SENSOR (OPERATION)

DTC B2769 Tilt Sensor Signal Circuit Malfunction


DESCRIPTION

The yaw rate 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 CSIF-CSIF line, the certification ECU (smart key ECU assembly) stores this DTC.

DTC Code
DTC Detection Condition
Trouble Area
B2769
After a normal/trouble signal is output from the yaw rate sensor as the result of self-diagnosis, either of the following malfunctions is detected:
  1. The CSIF-CSIF line circuit is open.
  2. Reception of signals other than a normal/trouble signal.
  1. Yaw rate sensor
  2. Certification ECU (Smart key ECU assembly)
  3. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2769 Tilt Sensor Signal Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - YAW RATE SENSOR)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2769 Tilt Sensor Signal Circuit Malfunction

  1. Disconnect the E30 ECU connector.

  1. Disconnect the E50 sensor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E30-21 (CSIF) - E50-5 (CSIF)
    		Always
    		Below 1 Ω
    E30-21 (CSIF) or E50-5 (CSIF) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK YAW RATE SENSOR (OPERATION)

  1. Temporarily replace the yaw rate sensor that has a tilt determining function with a new or normally functioning one (Click here).

  1. Check that the system operates normally.

    OK:
    DTC B2769 is not output.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (YAW RATE SENSOR IS FAULTY)