Dtc B2768 Tilt Sensor Internal Circuit Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - BATTERY AND BODY GROUND)

CHECK FOR DTC

REPLACE YAW RATE SENSOR ASSEMBLY

CHECK FOR DTC

DTC B2768 Tilt Sensor Internal Circuit Malfunction


DESCRIPTION

This DTC is stored when one of the following occurs: 1) a yaw rate sensor assembly power supply malfunction; 2) a yaw rate sensor assembly open malfunction; or 3) an EEPROM malfunction.

DTC Code
DTC Detection Condition
Trouble Area
B2768
One of the following conditions is met:
  1. A yaw rate sensor assembly power supply malfunction.
  2. A yaw rate sensor assembly open malfunction.
  3. An EEPROM malfunction.
  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 B2768 Tilt Sensor Internal Circuit Malfunction


INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  2. When replacing the yaw rate sensor assembly, perform zero point calibration.
    Vehicle stability control system (for Hydraulic Brake Booster) (LandCruiser RM00000452J00ZX.html).
    Vehicle stability control system (for Vacuum Brake Booster) (LandCruiser RM000000XHR0BKX.html).
1.CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - BATTERY AND BODY GROUND)


    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 B2768 Tilt Sensor Internal Circuit Malfunction

  1. Disconnect the G52 sensor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G52-1 (GND) - Body ground
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G52-6 (+B) - Body ground
    		Always
    		11 to 14 V
    G52-4 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
Text in Illustration
*a
Front view of wire harness connector
(to Yaw Rate Sensor Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.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 B2768 is not output.


NG
Go to step 3
OK

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

3.REPLACE YAW RATE SENSOR ASSEMBLY

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


NEXT


4.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 B2768 is not output.


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

END (YAW RATE SENSOR ASSEMBLY IS DEFECTIVE)