POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM IG Power Source Circuit

DESCRIPTION

When the engine switch is turned on (IG), the IG power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU.

The multiplex tilt and telescopic ECU also receives engine switch signals via this circuit.

WIRING DIAGRAM

A01X0WEE06

PROCEDURE


  1. INSPECT FUSE (ECU-IG1 No. 1)


    1. Remove the ECU-IG1 No. 1 fuse from the main body ECU.

    2. Measure the resistance of the fuse.

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-IG1 No. 1 fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. CHECK MULTIPLEX TILT AND TELESCOPIC ECU (IG TERMINAL VOLTAGE)


    1. A01XAF2E02
      *1 Rear view of wire harness connector: (to Multiplex Tilt and Telescopic ECU)

      Disconnect the E27 connector from the multiplex tilt and telescopic ECU.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E27-8 (IG) - E27-11 (GND) Engine switch on (IG) 11 to 14 V

    OK

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)


    1. A01XBYWE02
      *1 Rear view of wire harness connector: (to Multiplex Tilt and Telescopic ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E27-11 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - MAIN BODY ECU)

    A01X33GE02
    *1 Component with harness connected: (Main Body ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      2D-56 - Body ground Engine switch on (IG) 11 to 14 V

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - MAIN BODY ECU)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU - BATTERY)