Dtc C1434 Steering Angle Sensor Output Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK TERMINAL VOLTAGE (BAT)

CHECK TERMINAL VOLTAGE (IG)

CHECK HARNESS AND CONNECTOR (ESS CIRCUIT)

DTC C1434 Steering Angle Sensor Output Malfunction


DESCRIPTION

Steering angle sensor signals are sent to the skid control ECU via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor zero point malfunction diagnostic function.

DTC Code
DTC Detection Condition
Trouble Area
C1434
An error in communication between the skid control ECU and the steering angle sensor, or an abnormal steering angle sensor zero point.
  1. Steering angle sensor power supply
  2. Steering angle sensor (Spiral cable sub-assembly)
  3. Brake actuator assembly (Skid control ECU)

WIRING DIAGRAM

Refer to DTC C1432 (LandCruiser RM000000XIM0Z7X_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. Do not remove the steering sensor from the spiral cable sub-assembly.
  2. When replacing the spiral cable sub-assembly, confirm that the replacement part is of the correct specification.
  3. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
  1. When DTC U0073, U0123, U0124 and/or U0126 is output together with DTC C1434, inspect and repair the trouble areas indicated by DTC U0073, U0123, U0124 and/or U0126 first (LandCruiser RM000000YUO0T0X.html).
  2. When any of the speed sensors or the yaw rate and acceleration sensor has trouble, DTCs for the steering angle sensor may be stored even when the steering angle sensor is normal. When DTCs for the speed sensors or yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate and acceleration sensor first, and then inspect and repair the steering angle sensor.
1.CHECK DTC

  1. Clear the DTCs (LandCruiser RM000000XHV0KEX.html).

  1. Turn the ignition switch off.

  1. Turn the ignition switch to ON again and check that no CAN communication system DTC is output (LandCruiser RM000000XHV0KEX.html).

  1. Start the engine.

  1. Drive the vehicle at a speed of 35 km/h (22 mph) and turn the steering wheel to the right and left, and then check that no speed sensor or yaw rate and acceleration sensor DTCs are output (LandCruiser RM000000XHV0KEX.html).

    Result
    Result
    		Proceed to
    No CAN communication system, speed sensor, or yaw rate and acceleration sensor DTCs are output
    		A
    CAN communication system DTC is output
    		for LHD without Entry and Start System
    		B
    CAN communication system DTC is output
    		for LHD with Entry and Start System
    		C
    Speed sensor or yaw rate and acceleration sensor DTC is output
    		D
    HINT:
    1. If there is a malfunction in any of the speed sensors or the yaw rate and acceleration sensor, an abnormal value may be output although the steering angle sensor is normal.
    2. If speed sensor and yaw rate and acceleration sensor DTCs are output simultaneously, repair these two sensors first, and then inspect the steering angle sensor.


B
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0BYX.html)

C
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0C5X.html)

D
REPAIR CIRCUIT INDICATED BY OUTPUT DTC (LandCruiser RM000000XHU0D8X.html)
A


2.CHECK TERMINAL VOLTAGE (BAT)

  1. Make sure that there is no looseness at the locking parts and connecting parts of the connectors.

  1. Disconnect the G33 steering angle sensor connector.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1434 Steering Angle Sensor Output Malfunction

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G33-6 (BAT) - Body ground
    		Always
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Steering Angle Sensor)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK TERMINAL VOLTAGE (IG)

  1. Disconnect the G33 steering angle sensor connector.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1434 Steering Angle Sensor Output Malfunction

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G33-5 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Steering Angle Sensor)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (ESS CIRCUIT)

  1. Disconnect the G33 steering angle sensor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G33-2 (ESS) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE SPIRAL CABLE SUB-ASSEMBLY (LandCruiser RM000000SS909QX.html)