DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM, Diagnostic DTC:C1297/97

DTC Code DTC Name
C1297/97 Steering Angle Sensor

DESCRIPTION


DTC No. Detection Item DTC Detection Condition Trouble Area
C1297/97 Steering Angle Sensor When voltage of 4WD ECU assembly IG terminal is 9.5 V or more, and steering angle sensor (spiral with sensor cable sub-assembly) malfunction signal is received.
  • ECU-B NO. 1 fuse

  • Steering angle sensor (Spiral with sensor cable sub-assembly)

  • CAN communication system

  • 4WD ECU assembly

  • Wire harness and connector

WIRING DIAGRAM

A01KANPE02

CAUTION / NOTICE / HINT

Note

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

Tech Tips

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC.

      Click here


      Chassis > Four Wheel Drive > Clear DTCs
    2. Turn the ignition switch off.

    3. Turn the ignition switch to ON again and check that no CAN communication system DTC(s) is output.

      for LHD: Click here

      for RHD: Click here

    4. Start the engine.

    5. Drive the vehicle at a speed of 35 km/h (24 mph), turn the steering wheel to the right and left and check that no brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Neither CAN communication system DTC nor brake control system DTC is output A
      CAN communication system DTC is output (for LHD) B
      CAN communication system DTC is output (for RHD) C
      Brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output D

      Tech Tips

      When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.


    B
    C
    D
    A
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)


    1. A01KBPQC05
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor [Spiral with Sensor Cable Sub-assembly])

      Remove the steering wheel and the column cover lower.

      Click here

    2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G12-5 (BAT) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG
    OK
  3. CHECK TERMINAL VOLTAGE (IG TERMINAL)


    1. Turn the ignition switch to ON.

    2. A01KAWVC47
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor [Spiral with Sensor Cable Sub-assembly])

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G12-4 (IG) - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG (w/o Stop and Start System)
      NG (w/ Stop and Start System)

    NG (w/o Stop and Start System)
    NG (w/ Stop and Start System)
    OK
  4. CHECK HARNESS AND CONNECTOR (ESS TERMINAL)


    1. A01KBPQC04
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor [Spiral with Sensor Cable Sub-assembly])

      Turn the ignition switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G12-1 (ESS) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG
    OK
  5. READ VALUE USING GTS (STEERING ANGLE VALUE)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / Four Wheel Drive / Data List.

    5. Read the value displayed on the GTS.


      Chassis > Four Wheel Drive > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Steering Angle Value Steering angle value

      Min.: -3276.8°

      Max.: 3276.7°

      Left turn: Increase

      Right turn: Decrease

      Changes in proportion with the amount of steering wheel rotation during steering operation.

      Chassis > Four Wheel Drive > Data List
      Tester Display
      Steering Angle Value
      OK
      The steering angle sensor value changes in accordance with the steering wheel movement.
      Result
      Proceed to
      OK
      NG

    OK
    NG