Dtc B2769 Tilt Sensor Signal Circuit Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - MAIN BODY ECU)

REPLACE YAW RATE SENSOR ASSEMBLY

CHECK FOR DTC

DTC B2769 Tilt Sensor Signal Circuit Malfunction

DTC B276A Short to GND in Tilt Sensor Signal Circuit


DESCRIPTION

The yaw rate sensor assembly 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-GCS line, the main body ECU stores DTC B2769.
DTC B276A is stored when terminal CSIF of the yaw rate sensor assembly has not received a signal for 5 seconds or more.

DTC Code
DTC Detection Condition
Trouble Area
B2769
After a normal/trouble signal is output from the yaw rate sensor assembly as a result of self-diagnosis, following malfunctions are detected:
  1. The CSIF-GCS line circuit is open.
  2. Reception of signals other than a normal/trouble signal.
  1. Yaw rate sensor assembly
  2. Main body ECU
  3. Harness or connector
B276A
Terminal CSIF of the yaw rate sensor assembly has not received a signal for 5 seconds or more.
  1. Yaw rate sensor assembly
  2. Main body ECU
  3. Harness or connector

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2769 Tilt Sensor Signal Circuit Malfunction


INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate sensor assembly, perform zero point calibration.
  1. Vehicle stability control system (for Hydraulic Brake Booster) (LandCruiser RM00000452J00ZX.html).
  2. Vehicle stability control system (for Vacuum Brake Booster) (LandCruiser RM000000XHR0BKX.html).
1.CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - MAIN BODY ECU)

  1. Disconnect the G52 sensor connector.

  1. Disconnect the G63 ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G52-5 (CSIF) - G63-6 (GCS)
    		Always
    		Below 1 Ω
    G52-5 (CSIF) or G63-6 (GCS) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.REPLACE YAW RATE SENSOR ASSEMBLY

  1. Temporarily replace the yaw rate sensor assembly with a new or normally functioning one (LandCruiser RM000000SS507KX.html).


NEXT


3.CHECK FOR DTC

  1. Clear the DTCs (LandCruiser RM0000012QC017X.html).

  1. Turn the ignition switch to ON, and then off.

  1. Set the theft deterrent system to the armed state (LandCruiser RM000000W0L04UX.html).

  1. Check that the security indicator light changes from illuminated to flashing.

  1. Set the theft deterrent system to the disarmed state (LandCruiser RM000000W0L04UX.html).

  1. Check for DTCs (LandCruiser RM0000012QC017X.html).

    OK:
    DTC B2769 or B276A is not output.


NG
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)
OK

END (YAW RATE SENSOR ASSEMBLY IS DEFECTIVE)