POWER STEERING SYSTEM Drive Mode Switch Circuit

DESCRIPTION

The EPS characteristics change according to operation of the drive mode switch (integration control and panel assembly).

WIRING DIAGRAM

A0009QVE02

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs (See page for with Central Gateway ECU, Click here for without Central Gateway ECU).

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output (w/ Central Gateway ECU). B
      DTCs are output (w/o Central Gateway ECU). C

    B

    GO TO CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (w/o Central Gateway ECU) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (DRIVE MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) - BODY GROUND)


    1. Turn the power switch off.

    2. Disconnect the H71 drive mode switch (integration control and panel assembly) connector.

    3. A0007WOE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Drive Mode Switch (Integration Control and Panel Assembly))

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

      Standard Resistance
      Tester Connection Specified Condition
      H71-5 (E) - Body ground Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT DRIVE MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)


    1. Inspect drive mode switch (integration control and panel assembly) Click here.

      OK
      Drive mode switch (integration control and panel assembly) is normal.

    NG

    REPLACE DRIVE MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (DRIVE MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) - ECM)


    1. Reconnect the H71 drive mode switch (integration control and panel assembly) connector.

    2. Disconnect the A22 ECM connector.

    3. A0005IAE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-43 (SPCN) - Body ground

      SPORT mode switch being turned and held at SPORT position

      (SPORT mode)

      		 10 kΩ or higher
      ↑

      NORMAL mode switch being pushed and held

      (NORMAL mode)

      		 Below 1 Ω
      A22-9 (PWMS) - Body ground

      SPORT mode switch not turned

      (NORMAL mode)

      		 10 kΩ or higher
      ↑

      SPORT mode switch being turned and held at SPORT position

      (SPORT mode)

      		 Below 1 Ω

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR