Dtc C1434 Steering Angle Sensor Output Malfunction

Brake. Corolla. Zre142 Aze141
Brake Control Dynamic Control Systems. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

INSPECT STEERING ANGLE SENSOR (POWER SOURCE TERMINAL)

INSPECT STEERING ANGLE SENSOR (GROUND TERMINAL)

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 will be detected by the steering angle sensor zero point malfunction diagnostic function.

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

WIRING DIAGRAM

Refer to DTC C1432 (Link).

INSPECTION PROCEDURE

HINT:
  1. When U0073, U0123, U0124 and/or U0126 is output together with C1434, inspect and repair the trouble areas indicated by U0073, U0123, U01245 and/or U0126 first (COROLLA_ZRE142 RM000000YUO0J7X.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 output 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 (COROLLA_ZRE142 RM000000XHV0F2X.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 (COROLLA_ZRE142 RM000000WIB0BUX.html).

  1. Start the engine.

  1. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (22 mph) and check that no speed sensor or yaw rate and acceleration sensor DTCs are output (COROLLA_ZRE142 RM000000XHV0F2X.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 inspect the steering angle sensor.


B
INSPECT CAN COMMUNICATION SYSTEM (COROLLA_ZRE142 RM000000WI60ACX.html)

C
REPAIR CIRCUIT INDICATED BY OUTPUT DTC (COROLLA_ZRE142 RM000000XHU0A5X.html)
A


2.INSPECT STEERING ANGLE SENSOR (POWER SOURCE TERMINAL)


    Corolla. Zre142 Aze141.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1434 Steering Angle Sensor Output Malfunction

  1. Turn the ignition switch off.

  1. Remove the steering wheel and the column cover.

  1. Make sure that there is no looseness at the locking part and the connecting part of the connector.

  1. Disconnect the steering angle sensor connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E49-4 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    E49-5 (BAT) - Body ground
    		Always
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK


3.INSPECT STEERING ANGLE SENSOR (GROUND TERMINAL)


    Corolla. Zre142 Aze141.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1434 Steering Angle Sensor Output Malfunction

  1. Turn the ignition switch off.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E49-1 (ESS) - Body ground
    		Always
    		Below 1 Ω
    HINT:
    If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (COROLLA_ZRE142 RM000000XHN0DUX.html).


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)
OK

REPLACE STEERING ANGLE SENSOR (COROLLA_ZRE142 RM000002VP1018X.html)