Dtc C1381 Acceleration Sensor Power Supply Voltage Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK TERMINAL VOLTAGE (IG)

CHECK HARNESS AND CONNECTOR (GND TERMINAL)

RECONFIRM DTC

DTC C1381 Acceleration Sensor Power Supply Voltage Malfunction


DESCRIPTION

The skid control ECU receives signals from the acceleration sensor via the CAN communication system.
The acceleration sensor detects the vehicle's condition using 2 circuits (GL1, GL2).
If there is trouble in the bus lines between the acceleration sensor and the CAN communication system, the DTC U0124 (malfunction in CAN communication with the acceleration sensor) are stored.
These DTCs are also stored when calibration has not been completed.

DTC Code
DTC Detection Condition
Trouble Area
C1381
At a vehicle speed of more than 3 km/h (2 mph), the acceleration sensor power source malfunction signal is received for 10 seconds or more.
  1. ECU-IG NO. 1 fuse
  2. Acceleration sensor
  3. Acceleration sensor power source circuit

WIRING DIAGRAM

Refer to DTCs C1243 and C1245 (LandCruiser RM000001RFV0LEX.html).

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the acceleration sensor, perform calibration (LandCruiser RM000000XHR0BJX.html).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK TERMINAL VOLTAGE (IG)

  1. Disconnect the G52 acceleration sensor connector.



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

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


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (GND TERMINAL)

  1. Disconnect the G52 acceleration 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


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.RECONFIRM DTC

  1. Reconnect the acceleration sensor connector.

  1. Clear the DTCs (LandCruiser RM000000XHV0KDX.html).

  1. Start the engine.

  1. Perform a road test.

  1. Check if the same DTC is output (LandCruiser RM000000XHV0KDX.html).

    Result
    Result
    		Proceed to
    DTC C1381 is not output
    		A
    DTC C1381 is output
    		B


B
REPLACE ACCELERATION SENSOR (LandCruiser RM000000SS507KX.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)