VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1432

DTC Code DTC Name
C1432 Steering Angle Sensor Power Source Voltage Malfunction

DESCRIPTION

Signals from the steering sensor are sent to the skid control ECU (built into the brake actuator assembly) through CAN communication.

DTC Code DTC Detection Condition Trouble Area
C1432 When the voltage at terminal IG1 is between 9.5 and 17.4 V, a steering sensor power supply malfunction signal is received from the steering sensor.

  • LH ECU-IG fuse (for LHD)

  • RH ECU-IG fuse (for RHD)

  • MPX-B fuse (w/o VGRS)

  • ECU-B fuse (w/ VGRS)

  • Steering sensor power supply

  • Steering sensor circuit

  • Steering sensor

  • Front steering control ECU (w/ VGRS)

WIRING DIAGRAM

A01FDOHE15
A01FH1LE02

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips


  • When DTC U0073, U0123, U0124 and/or U0126 is output together with DTC C1432, inspect and repair the trouble areas indicated by DTC U0073, U0123, U0124 and/or U0126 first Click here.

  • When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering sensor may be stored even when the steering sensor is normal. When DTCs for the speed sensor or yaw rate sensor are output together with DTCs for the steering sensor, inspect and repair the speed sensor and yaw rate sensor first, and then inspect and repair the steering sensor.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (IG1/ESS TERMINAL)

    A01FHP8E01
    Text in Illustration
    *A w/o VGRS
    *B w/ VGRS
    *a

    Front view of wire harness connector

    (to Steering Sensor)

    1. Disconnect the steering sensor connector.

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

      Standard Voltage
      w/o VGRS
      Tester Connection Switch Condition Specified Condition
      N34-4 (IG1) - Body ground Engine switch on (IG) 11 to 14 V
      w/ VGRS
      Tester Connection Switch Condition Specified Condition
      N33-4 (IG1) - Body ground Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      w/o VGRS
      Tester Connection Condition Specified Condition
      N34-1 (ESS) - Body ground Always Below 1 Ω
      w/ VGRS
      Tester Connection Condition Specified Condition
      N33-1 (ESS) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (w/o VGRS) B
      OK (w/ VGRS) C

    B

    CHECK HARNESS AND CONNECTOR (BAT TERMINAL) Click here

    C

    CHECK HARNESS AND CONNECTOR (BAT TERMINAL) Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  2. CHECK HARNESS AND CONNECTOR (BAT TERMINAL)


    1. Disconnect the steering sensor connector.

    2. A01FGC1E04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Steering Sensor)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      N34-8 (BAT) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE STEERING SENSOR Click here

  3. CHECK HARNESS AND CONNECTOR (BAT TERMINAL)


    1. Disconnect the steering sensor connector.

    2. A01FDUTE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Steering Sensor)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      N33-5 (BAT) - Body ground Always 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (STEERING SENSOR - FRONT STEERING CONTROL ECU) Click here

    OK

    REPLACE STEERING SENSOR Click here

  4. CHECK HARNESS AND CONNECTOR (STEERING SENSOR - FRONT STEERING CONTROL ECU)


    1. Disconnect the N33 steering sensor connector.

    2. Disconnect the N104 front steering control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N33-5 (BAT) - N104-1 (+BO) Always Below 1 Ω
      N33-5 (BAT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (BATTERY - FRONT STEERING CONTROL ECU)


    1. A01FDKWE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Steering Control ECU)

      Disconnect the front steering control ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      N104-7 (+BI) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT STEERING CONTROL ECU Click here