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 THEFT WARNING TILT SENSOR [YAW RATE SENSOR] - BATTERY AND BODY GROUND

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - THEFT WARNING TILT SENSOR [YAW RATE SENSOR])

CHECK THEFT WARNING TILT SENSOR (YAW RATE SENSOR) (GCS)

DTC B2769 Tilt Sensor Signal Circuit Malfunction


DESCRIPTION

  1. This DTC is stored when one of the following occurs: 1) theft warning tilt sensor (yaw rate sensor) power supply malfunction; 2) theft warning tilt sensor (yaw rate sensor) open malfunction; or 3) EEPROM malfunction.

DTC Code
DTC Detection Condition
Trouble Area
B2769
If one of the following is detected:
  1. Theft warning tilt sensor (yaw rate sensor) power supply malfunction
  2. Theft warning tilt sensor (yaw rate sensor) open malfunction
  3. EEPROM malfunction
  1. Theft warning tilt sensor (yaw rate sensor)
  2. Main body ECU (multiplex network body ECU)
  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

NOTICE:
  1. If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.
  2. When replacing the theft warning tilt sensor (yaw rate sensor), perform zero point calibration (Click here).
  3. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  4. w/ Door Control Battery:
    As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), 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 (multiplex network body ECU) before performing this troubleshooting procedure (Click here).
1.CHECK THEFT WARNING TILT SENSOR [YAW RATE SENSOR] - BATTERY AND BODY GROUND


    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 theft warning tilt sensor (yaw rate sensor) connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E50-6 (+B) - Body ground
    		Always
    		11 to 14 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E50-1 (GND) - Body ground
    		Always
    		Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Theft Warning Tilt Sensor [Yaw Rate Sensor])


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - THEFT WARNING TILT SENSOR [YAW RATE SENSOR])

  1. Disconnect the E117 main body ECU (multiplex network body ECU) connector.

  1. Disconnect the E50 theft warning tilt sensor (yaw rate sensor) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E117-6 (GCS) - E50-5 (CSIF)
    		Always
    		Below 1 Ω
    E117-6 (GCS) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK THEFT WARNING TILT SENSOR (YAW RATE SENSOR) (GCS)


  1. Using an oscilloscope, check the waveform.


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


    Text in Illustration
    *a
    		Component with harness connected
    (Main body ECU [multiplex network body ECU])
    		*b
    		CSIF Initial Signal
    *c
    		CSIF Initial Response
    		*d
    		Approximately 1.0 seconds
    *e
    		Initial Diagnosis
    		*f
    		Approximately 1.0 to 1.6 seconds
    *g
    		Approximately 0.05 seconds
    		*h
    		Approximately 5.5 seconds
    *i
    		Disarmed State
    		*j
    		Arming Preparation State
    Measurement Condition
    Tester Connection
    		Content
    Tester Connection
    		E117-6 (GCS) - Body ground
    Tool Setting
    		2 V/DIV., 100 ms./DIV.
    Condition
    		Theft deterrent system is set (system changes from disarmed state to arming preparation state)
    HINT:
    1. If the theft warning tilt sensor (yaw rate sensor) is normal, an initial response is output in response to the HI input from the main body ECU (multiplex network body ECU).
    2. If the waveform output remains LO, there may be a problem with the main body ECU (multiplex network body ECU), as there is no input from the main body ECU (multiplex network body ECU).
    OK:
    The waveform displays properly (HI is 6.5 V or higher and LO is below 1 V).
    Result
    Result
    		Proceed to
    NG (Waveform output remains LO) (for LHD)
    		A
    NG (Waveform output remains LO) (for RHD)
    		B
    NG (There is no initial response and the waveform output remains HI)
    		C
    OK (There is an initial response)
    		D


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)

C
REPLACE THEFT WARNING TILT SENSOR (YAW RATE SENSOR) (Click here)

D
USE SIMULATION METHOD TO CHECK (Click here)
A

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)