Dtc C1434 Steering Angle Sensor Output Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK TERMINAL VOLTAGE (BAT TERMINAL)

CHECK TERMINAL VOLTAGE (IG TERMINAL)

CHECK HARNESS AND CONNECTOR (ESS TERMINAL)

RECONFIRM DTC

DTC C1434 Steering Angle Sensor Output Malfunction


DESCRIPTION

Steering angle sensor signals are sent to the skid control ECU (brake actuator assembly) 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. ECU-B fuse
  2. ECU-IG&GAUGE fuse
  3. Steering angle sensor power supply
  4. Steering angle sensor circuit
  5. Steering angle sensor (Spiral cable sub-assembly)

WIRING DIAGRAM

Refer to DTC C1432 (Toyota Fortuner RM000000XIM0FZX.html).

INSPECTION PROCEDURE

NOTICE:
  1. Do not remove the steering angle sensor from the spiral cable sub-assembly.
  2. After 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.
  4. Before disconnecting the connector, make sure that there are no problems with the connection.
  5. After disconnecting the connector, make sure that the connector case and terminals are not deformed or corroded.
HINT:
  1. When DTC U0073 and/or U0126 is output together with DTC C1434, inspect and repair the trouble areas indicated by DTC U0073 and/or U0126 first (Toyota Fortuner RM000000YUO0DYX.html).
  2. When any of the speed sensors or the yaw rate sensor assembly 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 the yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate sensor assembly first, and then inspect and repair the steering angle sensor.
1.CHECK DTC

  1. Clear the DTC (Toyota Fortuner RM000000XHV0C7X.html).

  1. Turn the ignition switch off.

  1. Start the engine.

  1. Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left.

  1. Check for DTC (Toyota Fortuner RM000000XHV0C7X.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
    		B
    Speed sensor or yaw rate and acceleration sensor DTC is output
    		C
    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) (Toyota Fortuner RM000002VT000OX.html)

C
REPAIR CIRCUIT INDICATED BY OUTPUT DTC (Toyota Fortuner RM000000XHU08LX.html)
A


2.CHECK TERMINAL VOLTAGE (BAT TERMINAL)

  1. Turn the ignition switch off.

  1. Disconnect the steering angle sensor (spiral cable sub-assembly) connector.



    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control 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
    S23-6 (BAT) - Body ground
    		Always
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Steering Angle Sensor [Spiral Cable Sub-assembly])


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK TERMINAL VOLTAGE (IG TERMINAL)

  1. Turn the ignition switch off.

  1. Disconnect the steering angle sensor (spiral cable sub-assembly) connector.



    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control 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
    S23-5 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Steering Angle Sensor [Spiral Cable Sub-assembly])


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (ESS TERMINAL)

  1. Turn the ignition switch off.

  1. Disconnect the steering angle sensor (spiral cable sub-assembly) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S23-2 (ESS) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.RECONFIRM DTC

  1. Clear the DTC (Toyota Fortuner RM000000XHV0C7X.html).

  1. Turn the ignition switch off.

  1. Start the engine.

  1. Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left.

  1. Check if the same DTC is output (Toyota Fortuner RM000000XHV0C7X.html).

    Result
    Result
    		Proceed to
    DTC is output
    		A
    DTC is not output
    		B
    HINT:
    If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next suspected area (Toyota Fortuner RM000000XHN0BDX.html).


B
USE SIMULATION METHOD TO CHECK (Toyota Fortuner RM0000012Q9013X.html)
A

REPLACE SPIRAL CABLE SUB-ASSEMBLY (Toyota Fortuner RM000000SS905LX.html)