POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM Tilt and Telescopic Manual Switch Circuit

DESCRIPTION

Different voltage values are sent to the multiplex tilt and telescopic ECU by operating the tilt and telescopic switch. The multiplex tilt and telescopic ECU then judges which motor and in which direction that motor should operate based on the voltage value.

WIRING DIAGRAM

A01ET0ME02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (TILT UP/DOWN SWITCH, TELESCOPIC SHORT/LONG SWITCH)


    1. A01EUC4E03
      Text in Illustration
      *a Tilt Up
      *b Tilt Down
      *c Telescopic Extend (Long)
      *d Telescopic Contract (Short)

      Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

    5. Check the tilt and telescopic manual switch. Enter the following menus: Body / Tilt & Telescopic / Data List.

      Tilt & Telescopic
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Telesco Short Switch

      Input state of telescopic contract switch/

      OFF or ON

      OFF: Telescopic contract switch not activated

      ON: Telescopic contract switch activated

      		 -
      Telesco Long Switch

      Input state of telescopic extend switch/

      OFF or ON

      OFF: Telescopic extend switch not activated

      ON: Telescopic extend switch activated

      		 -
      Tilt Down Switch

      Input state of tilt down switch/

      OFF or ON

      OFF: Tilt down switch not activated

      ON: Tilt down switch activated

      		 -
      Tilt Up Switch

      Input state of tilt up switch/

      OFF or ON

      OFF: Tilt up switch not activated

      ON: Tilt up switch activated

      		 -
      OK
      "ON" is displayed on the intelligent tester screen when each switch is turned on.
      "OFF" is displayed on the intelligent tester screen when each switch is turned off.

    NG

    CHECK HARNESS AND CONNECTOR (ECU - TILT AND TELESCOPIC SWITCH) Click here

    OK

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

  2. CHECK HARNESS AND CONNECTOR (ECU - TILT AND TELESCOPIC SWITCH)


    1. Disconnect the I15 multiplex tilt and telescopic ECU connector.

    2. Disconnect the I26 tilt and telescopic switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I15-5 (VC) - I26-1 (VC) Always Below 1 Ω
      I15-18 (MSW) - I26-3 (MSW)
      I15-5 (VC) - Body ground 10 kΩ or higher
      I15-18 (MSW) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MULTIPLEX TILT AND TELESCOPIC ECU (VC TERMINAL VOLTAGE)


    1. A01EXYZE07
      Text in Illustration
      *a

      Component with harness connected

      (Multiplex Tilt and Telescopic ECU)

      Reconnect the I15 multiplex tilt and telescopic ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I15-5 (VC) - I15-18 (MSW) Engine switch on (IG) 4.9 to 5.1 V

    NG

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

    OK

  4. CHECK TILT AND TELESCOPIC SWITCH


    1. A01EYMVE01
      Text in Illustration
      *a

      Component without harness connected

      (Tilt and Telescopic Switch)

      Remove the tilt and telescopic switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1(VC) - 3(MSW) Tilt up 342 to 378 Ω
      Tilt down 1890.5 to 2089.5 Ω
      Telescopic contract 750.5 to 829.5 Ω
      Telescopic extend 152 to 168 Ω

    NG

    REPLACE TILT AND TELESCOPIC SWITCH Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here