POWER STEERING SYSTEM (for 2GR-FXE), Diagnostic DTC:C1569/23

DTC Code DTC Name
C1569/23 Battery Power Supply Voltage

DESCRIPTION

DTC Code Detection Condition Trouble Area
C1569/23 Malfunction in auxiliary battery power supply voltage.

  • EPS-B fuse

  • Harness or connector

  • Power steering ECU

WIRING DIAGRAM

A01FT4NE01

INSPECTION PROCEDURE

Note


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

  • If the power steering ECU assembly is replaced a new one, perform assist map writing, clear the motor rotation angle sensor calibration value, initialize the motor rotation angle sensor value and calibrate the torque sensor zero point Click here.

PROCEDURE


  1. CHECK CONNECTORS


    1. Check the connection of the power steering ECU connector.

    2. Visually inspect the terminals of the power steering ECU connector.

      Result

      Result

      Proceed to
      Normal A
      Connectors not properly connected B
      Power steering ECU connector terminals abnormal C

    B

    CONNECT CONNECTOR CORRECTLY

    C

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - AUXILIARY BATTERY AND BODY GROUND)


    1. A01FUH4E06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Steering ECU)

      Disconnect the power steering ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A29-8 (+B) - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A29-9 (PGND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here