POWER STEERING SYSTEM, Diagnostic DTC:C1569

DTC Code DTC Name
C1569 Battery Power Supply Voltage Malfunction

DESCRIPTION

As a fail-safe function, when the battery power supply voltage is malfunctioning, power assistance is limited/stopped.

DTC No. DTC Detection Condition Trouble Area
C1569 Malfunction in auxiliary battery power supply voltage.

  • ECU-B No. 2 fuse

  • Harness or connector

  • Power steering ECU

WIRING DIAGRAM

A01NDJ2E01

INSPECTION PROCEDURE

Note


  • If the power steering ECU has been replaced with a new one, perform the rotation angle sensor initialization and torque sensor zero point calibration Click here.

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

PROCEDURE


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


    1. A01NF09E24
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Steering ECU)

      Disconnect the F9 and F10 power steering ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F9-12 (+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
      F10-2 (PGND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER STEERING ECU Click here